2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/module.h>
6 #include <linux/highmem.h>
8 #include <linux/pagemap.h>
9 #include <linux/slab.h>
10 #include <linux/uaccess.h>
12 #include <linux/bio.h>
15 #include <linux/ceph/libceph.h>
16 #include <linux/ceph/osd_client.h>
17 #include <linux/ceph/messenger.h>
18 #include <linux/ceph/decode.h>
19 #include <linux/ceph/auth.h>
20 #include <linux/ceph/pagelist.h>
22 #define OSD_OP_FRONT_LEN 4096
23 #define OSD_OPREPLY_FRONT_LEN 512
25 static struct kmem_cache
*ceph_osd_request_cache
;
27 static const struct ceph_connection_operations osd_con_ops
;
29 static void __send_queued(struct ceph_osd_client
*osdc
);
30 static int __reset_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
);
31 static void __register_request(struct ceph_osd_client
*osdc
,
32 struct ceph_osd_request
*req
);
33 static void __unregister_request(struct ceph_osd_client
*osdc
,
34 struct ceph_osd_request
*req
);
35 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
36 struct ceph_osd_request
*req
);
37 static void __enqueue_request(struct ceph_osd_request
*req
);
38 static void __send_request(struct ceph_osd_client
*osdc
,
39 struct ceph_osd_request
*req
);
42 * Implement client access to distributed object storage cluster.
44 * All data objects are stored within a cluster/cloud of OSDs, or
45 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
46 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
47 * remote daemons serving up and coordinating consistent and safe
50 * Cluster membership and the mapping of data objects onto storage devices
51 * are described by the osd map.
53 * We keep track of pending OSD requests (read, write), resubmit
54 * requests to different OSDs when the cluster topology/data layout
55 * change, or retry the affected requests when the communications
56 * channel with an OSD is reset.
60 * calculate the mapping of a file extent onto an object, and fill out the
61 * request accordingly. shorten extent as necessary if it crosses an
64 * fill osd op in request message.
66 static int calc_layout(struct ceph_file_layout
*layout
, u64 off
, u64
*plen
,
67 u64
*objnum
, u64
*objoff
, u64
*objlen
)
73 r
= ceph_calc_file_object_mapping(layout
, off
, orig_len
, objnum
,
77 if (*objlen
< orig_len
) {
79 dout(" skipping last %llu, final file extent %llu~%llu\n",
80 orig_len
- *plen
, off
, *plen
);
83 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum
, *objoff
, *objlen
);
88 static void ceph_osd_data_init(struct ceph_osd_data
*osd_data
)
90 memset(osd_data
, 0, sizeof (*osd_data
));
91 osd_data
->type
= CEPH_OSD_DATA_TYPE_NONE
;
94 static void ceph_osd_data_pages_init(struct ceph_osd_data
*osd_data
,
95 struct page
**pages
, u64 length
, u32 alignment
,
96 bool pages_from_pool
, bool own_pages
)
98 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGES
;
99 osd_data
->pages
= pages
;
100 osd_data
->length
= length
;
101 osd_data
->alignment
= alignment
;
102 osd_data
->pages_from_pool
= pages_from_pool
;
103 osd_data
->own_pages
= own_pages
;
106 static void ceph_osd_data_pagelist_init(struct ceph_osd_data
*osd_data
,
107 struct ceph_pagelist
*pagelist
)
109 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGELIST
;
110 osd_data
->pagelist
= pagelist
;
114 static void ceph_osd_data_bio_init(struct ceph_osd_data
*osd_data
,
115 struct bio
*bio
, size_t bio_length
)
117 osd_data
->type
= CEPH_OSD_DATA_TYPE_BIO
;
119 osd_data
->bio_length
= bio_length
;
121 #endif /* CONFIG_BLOCK */
123 #define osd_req_op_data(oreq, whch, typ, fld) \
125 struct ceph_osd_request *__oreq = (oreq); \
126 unsigned int __whch = (whch); \
127 BUG_ON(__whch >= __oreq->r_num_ops); \
128 &__oreq->r_ops[__whch].typ.fld; \
131 static struct ceph_osd_data
*
132 osd_req_op_raw_data_in(struct ceph_osd_request
*osd_req
, unsigned int which
)
134 BUG_ON(which
>= osd_req
->r_num_ops
);
136 return &osd_req
->r_ops
[which
].raw_data_in
;
139 struct ceph_osd_data
*
140 osd_req_op_extent_osd_data(struct ceph_osd_request
*osd_req
,
143 return osd_req_op_data(osd_req
, which
, extent
, osd_data
);
145 EXPORT_SYMBOL(osd_req_op_extent_osd_data
);
147 struct ceph_osd_data
*
148 osd_req_op_cls_response_data(struct ceph_osd_request
*osd_req
,
151 return osd_req_op_data(osd_req
, which
, cls
, response_data
);
153 EXPORT_SYMBOL(osd_req_op_cls_response_data
); /* ??? */
155 void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*osd_req
,
156 unsigned int which
, struct page
**pages
,
157 u64 length
, u32 alignment
,
158 bool pages_from_pool
, bool own_pages
)
160 struct ceph_osd_data
*osd_data
;
162 osd_data
= osd_req_op_raw_data_in(osd_req
, which
);
163 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
164 pages_from_pool
, own_pages
);
166 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages
);
168 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*osd_req
,
169 unsigned int which
, struct page
**pages
,
170 u64 length
, u32 alignment
,
171 bool pages_from_pool
, bool own_pages
)
173 struct ceph_osd_data
*osd_data
;
175 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
176 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
177 pages_from_pool
, own_pages
);
179 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages
);
181 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*osd_req
,
182 unsigned int which
, struct ceph_pagelist
*pagelist
)
184 struct ceph_osd_data
*osd_data
;
186 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
187 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
189 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist
);
192 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*osd_req
,
193 unsigned int which
, struct bio
*bio
, size_t bio_length
)
195 struct ceph_osd_data
*osd_data
;
197 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
198 ceph_osd_data_bio_init(osd_data
, bio
, bio_length
);
200 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio
);
201 #endif /* CONFIG_BLOCK */
203 static void osd_req_op_cls_request_info_pagelist(
204 struct ceph_osd_request
*osd_req
,
205 unsigned int which
, struct ceph_pagelist
*pagelist
)
207 struct ceph_osd_data
*osd_data
;
209 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_info
);
210 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
213 void osd_req_op_cls_request_data_pagelist(
214 struct ceph_osd_request
*osd_req
,
215 unsigned int which
, struct ceph_pagelist
*pagelist
)
217 struct ceph_osd_data
*osd_data
;
219 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
220 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
222 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist
);
224 void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*osd_req
,
225 unsigned int which
, struct page
**pages
, u64 length
,
226 u32 alignment
, bool pages_from_pool
, bool own_pages
)
228 struct ceph_osd_data
*osd_data
;
230 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
231 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
232 pages_from_pool
, own_pages
);
234 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages
);
236 void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*osd_req
,
237 unsigned int which
, struct page
**pages
, u64 length
,
238 u32 alignment
, bool pages_from_pool
, bool own_pages
)
240 struct ceph_osd_data
*osd_data
;
242 osd_data
= osd_req_op_data(osd_req
, which
, cls
, response_data
);
243 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
244 pages_from_pool
, own_pages
);
246 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages
);
248 static u64
ceph_osd_data_length(struct ceph_osd_data
*osd_data
)
250 switch (osd_data
->type
) {
251 case CEPH_OSD_DATA_TYPE_NONE
:
253 case CEPH_OSD_DATA_TYPE_PAGES
:
254 return osd_data
->length
;
255 case CEPH_OSD_DATA_TYPE_PAGELIST
:
256 return (u64
)osd_data
->pagelist
->length
;
258 case CEPH_OSD_DATA_TYPE_BIO
:
259 return (u64
)osd_data
->bio_length
;
260 #endif /* CONFIG_BLOCK */
262 WARN(true, "unrecognized data type %d\n", (int)osd_data
->type
);
267 static void ceph_osd_data_release(struct ceph_osd_data
*osd_data
)
269 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
&& osd_data
->own_pages
) {
272 num_pages
= calc_pages_for((u64
)osd_data
->alignment
,
273 (u64
)osd_data
->length
);
274 ceph_release_page_vector(osd_data
->pages
, num_pages
);
276 ceph_osd_data_init(osd_data
);
279 static void osd_req_op_data_release(struct ceph_osd_request
*osd_req
,
282 struct ceph_osd_req_op
*op
;
284 BUG_ON(which
>= osd_req
->r_num_ops
);
285 op
= &osd_req
->r_ops
[which
];
288 case CEPH_OSD_OP_READ
:
289 case CEPH_OSD_OP_WRITE
:
290 case CEPH_OSD_OP_WRITEFULL
:
291 ceph_osd_data_release(&op
->extent
.osd_data
);
293 case CEPH_OSD_OP_CALL
:
294 ceph_osd_data_release(&op
->cls
.request_info
);
295 ceph_osd_data_release(&op
->cls
.request_data
);
296 ceph_osd_data_release(&op
->cls
.response_data
);
298 case CEPH_OSD_OP_SETXATTR
:
299 case CEPH_OSD_OP_CMPXATTR
:
300 ceph_osd_data_release(&op
->xattr
.osd_data
);
302 case CEPH_OSD_OP_STAT
:
303 ceph_osd_data_release(&op
->raw_data_in
);
313 static void ceph_osdc_release_request(struct kref
*kref
)
315 struct ceph_osd_request
*req
= container_of(kref
,
316 struct ceph_osd_request
, r_kref
);
319 dout("%s %p (r_request %p r_reply %p)\n", __func__
, req
,
320 req
->r_request
, req
->r_reply
);
321 WARN_ON(!RB_EMPTY_NODE(&req
->r_node
));
322 WARN_ON(!list_empty(&req
->r_req_lru_item
));
323 WARN_ON(!list_empty(&req
->r_osd_item
));
324 WARN_ON(!list_empty(&req
->r_linger_item
));
325 WARN_ON(!list_empty(&req
->r_linger_osd_item
));
329 ceph_msg_put(req
->r_request
);
331 ceph_msg_revoke_incoming(req
->r_reply
);
332 ceph_msg_put(req
->r_reply
);
335 for (which
= 0; which
< req
->r_num_ops
; which
++)
336 osd_req_op_data_release(req
, which
);
338 ceph_put_snap_context(req
->r_snapc
);
340 mempool_free(req
, req
->r_osdc
->req_mempool
);
341 else if (req
->r_num_ops
<= CEPH_OSD_SLAB_OPS
)
342 kmem_cache_free(ceph_osd_request_cache
, req
);
347 void ceph_osdc_get_request(struct ceph_osd_request
*req
)
349 dout("%s %p (was %d)\n", __func__
, req
,
350 atomic_read(&req
->r_kref
.refcount
));
351 kref_get(&req
->r_kref
);
353 EXPORT_SYMBOL(ceph_osdc_get_request
);
355 void ceph_osdc_put_request(struct ceph_osd_request
*req
)
357 dout("%s %p (was %d)\n", __func__
, req
,
358 atomic_read(&req
->r_kref
.refcount
));
359 kref_put(&req
->r_kref
, ceph_osdc_release_request
);
361 EXPORT_SYMBOL(ceph_osdc_put_request
);
363 struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
364 struct ceph_snap_context
*snapc
,
365 unsigned int num_ops
,
369 struct ceph_osd_request
*req
;
370 struct ceph_msg
*msg
;
374 BUG_ON(num_ops
> CEPH_OSD_SLAB_OPS
);
375 req
= mempool_alloc(osdc
->req_mempool
, gfp_flags
);
376 } else if (num_ops
<= CEPH_OSD_SLAB_OPS
) {
377 req
= kmem_cache_alloc(ceph_osd_request_cache
, gfp_flags
);
379 BUG_ON(num_ops
> CEPH_OSD_MAX_OPS
);
380 req
= kmalloc(sizeof(*req
) + num_ops
* sizeof(req
->r_ops
[0]),
386 /* req only, each op is zeroed in _osd_req_op_init() */
387 memset(req
, 0, sizeof(*req
));
390 req
->r_mempool
= use_mempool
;
391 req
->r_num_ops
= num_ops
;
393 kref_init(&req
->r_kref
);
394 init_completion(&req
->r_completion
);
395 init_completion(&req
->r_safe_completion
);
396 RB_CLEAR_NODE(&req
->r_node
);
397 INIT_LIST_HEAD(&req
->r_unsafe_item
);
398 INIT_LIST_HEAD(&req
->r_linger_item
);
399 INIT_LIST_HEAD(&req
->r_linger_osd_item
);
400 INIT_LIST_HEAD(&req
->r_req_lru_item
);
401 INIT_LIST_HEAD(&req
->r_osd_item
);
403 req
->r_base_oloc
.pool
= -1;
404 req
->r_target_oloc
.pool
= -1;
406 msg_size
= OSD_OPREPLY_FRONT_LEN
;
407 if (num_ops
> CEPH_OSD_SLAB_OPS
) {
408 /* ceph_osd_op and rval */
409 msg_size
+= (num_ops
- CEPH_OSD_SLAB_OPS
) *
410 (sizeof(struct ceph_osd_op
) + 4);
413 /* create reply message */
415 msg
= ceph_msgpool_get(&osdc
->msgpool_op_reply
, 0);
417 msg
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, msg_size
,
420 ceph_osdc_put_request(req
);
425 msg_size
= 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */
426 msg_size
+= 4 + 4 + 4 + 8; /* mtime, reassert_version */
427 msg_size
+= 2 + 4 + 8 + 4 + 4; /* oloc */
428 msg_size
+= 1 + 8 + 4 + 4; /* pgid */
429 msg_size
+= 4 + CEPH_MAX_OID_NAME_LEN
; /* oid */
430 msg_size
+= 2 + num_ops
* sizeof(struct ceph_osd_op
);
431 msg_size
+= 8; /* snapid */
432 msg_size
+= 8; /* snap_seq */
433 msg_size
+= 4 + 8 * (snapc
? snapc
->num_snaps
: 0); /* snaps */
434 msg_size
+= 4; /* retry_attempt */
436 /* create request message; allow space for oid */
438 msg
= ceph_msgpool_get(&osdc
->msgpool_op
, 0);
440 msg
= ceph_msg_new(CEPH_MSG_OSD_OP
, msg_size
, gfp_flags
, true);
442 ceph_osdc_put_request(req
);
446 memset(msg
->front
.iov_base
, 0, msg
->front
.iov_len
);
448 req
->r_request
= msg
;
452 EXPORT_SYMBOL(ceph_osdc_alloc_request
);
454 static bool osd_req_opcode_valid(u16 opcode
)
457 #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true;
458 __CEPH_FORALL_OSD_OPS(GENERATE_CASE
)
466 * This is an osd op init function for opcodes that have no data or
467 * other information associated with them. It also serves as a
468 * common init routine for all the other init functions, below.
470 static struct ceph_osd_req_op
*
471 _osd_req_op_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
472 u16 opcode
, u32 flags
)
474 struct ceph_osd_req_op
*op
;
476 BUG_ON(which
>= osd_req
->r_num_ops
);
477 BUG_ON(!osd_req_opcode_valid(opcode
));
479 op
= &osd_req
->r_ops
[which
];
480 memset(op
, 0, sizeof (*op
));
487 void osd_req_op_init(struct ceph_osd_request
*osd_req
,
488 unsigned int which
, u16 opcode
, u32 flags
)
490 (void)_osd_req_op_init(osd_req
, which
, opcode
, flags
);
492 EXPORT_SYMBOL(osd_req_op_init
);
494 void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
495 unsigned int which
, u16 opcode
,
496 u64 offset
, u64 length
,
497 u64 truncate_size
, u32 truncate_seq
)
499 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
501 size_t payload_len
= 0;
503 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
504 opcode
!= CEPH_OSD_OP_WRITEFULL
&& opcode
!= CEPH_OSD_OP_ZERO
&&
505 opcode
!= CEPH_OSD_OP_TRUNCATE
);
507 op
->extent
.offset
= offset
;
508 op
->extent
.length
= length
;
509 op
->extent
.truncate_size
= truncate_size
;
510 op
->extent
.truncate_seq
= truncate_seq
;
511 if (opcode
== CEPH_OSD_OP_WRITE
|| opcode
== CEPH_OSD_OP_WRITEFULL
)
512 payload_len
+= length
;
514 op
->indata_len
= payload_len
;
516 EXPORT_SYMBOL(osd_req_op_extent_init
);
518 void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
519 unsigned int which
, u64 length
)
521 struct ceph_osd_req_op
*op
;
524 BUG_ON(which
>= osd_req
->r_num_ops
);
525 op
= &osd_req
->r_ops
[which
];
526 previous
= op
->extent
.length
;
528 if (length
== previous
)
529 return; /* Nothing to do */
530 BUG_ON(length
> previous
);
532 op
->extent
.length
= length
;
533 op
->indata_len
-= previous
- length
;
535 EXPORT_SYMBOL(osd_req_op_extent_update
);
537 void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
538 unsigned int which
, u64 offset_inc
)
540 struct ceph_osd_req_op
*op
, *prev_op
;
542 BUG_ON(which
+ 1 >= osd_req
->r_num_ops
);
544 prev_op
= &osd_req
->r_ops
[which
];
545 op
= _osd_req_op_init(osd_req
, which
+ 1, prev_op
->op
, prev_op
->flags
);
546 /* dup previous one */
547 op
->indata_len
= prev_op
->indata_len
;
548 op
->outdata_len
= prev_op
->outdata_len
;
549 op
->extent
= prev_op
->extent
;
551 op
->extent
.offset
+= offset_inc
;
552 op
->extent
.length
-= offset_inc
;
554 if (op
->op
== CEPH_OSD_OP_WRITE
|| op
->op
== CEPH_OSD_OP_WRITEFULL
)
555 op
->indata_len
-= offset_inc
;
557 EXPORT_SYMBOL(osd_req_op_extent_dup_last
);
559 void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
560 u16 opcode
, const char *class, const char *method
)
562 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
564 struct ceph_pagelist
*pagelist
;
565 size_t payload_len
= 0;
568 BUG_ON(opcode
!= CEPH_OSD_OP_CALL
);
570 pagelist
= kmalloc(sizeof (*pagelist
), GFP_NOFS
);
572 ceph_pagelist_init(pagelist
);
574 op
->cls
.class_name
= class;
575 size
= strlen(class);
576 BUG_ON(size
> (size_t) U8_MAX
);
577 op
->cls
.class_len
= size
;
578 ceph_pagelist_append(pagelist
, class, size
);
581 op
->cls
.method_name
= method
;
582 size
= strlen(method
);
583 BUG_ON(size
> (size_t) U8_MAX
);
584 op
->cls
.method_len
= size
;
585 ceph_pagelist_append(pagelist
, method
, size
);
588 osd_req_op_cls_request_info_pagelist(osd_req
, which
, pagelist
);
590 op
->cls
.argc
= 0; /* currently unused */
592 op
->indata_len
= payload_len
;
594 EXPORT_SYMBOL(osd_req_op_cls_init
);
596 int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
597 u16 opcode
, const char *name
, const void *value
,
598 size_t size
, u8 cmp_op
, u8 cmp_mode
)
600 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
602 struct ceph_pagelist
*pagelist
;
605 BUG_ON(opcode
!= CEPH_OSD_OP_SETXATTR
&& opcode
!= CEPH_OSD_OP_CMPXATTR
);
607 pagelist
= kmalloc(sizeof(*pagelist
), GFP_NOFS
);
611 ceph_pagelist_init(pagelist
);
613 payload_len
= strlen(name
);
614 op
->xattr
.name_len
= payload_len
;
615 ceph_pagelist_append(pagelist
, name
, payload_len
);
617 op
->xattr
.value_len
= size
;
618 ceph_pagelist_append(pagelist
, value
, size
);
621 op
->xattr
.cmp_op
= cmp_op
;
622 op
->xattr
.cmp_mode
= cmp_mode
;
624 ceph_osd_data_pagelist_init(&op
->xattr
.osd_data
, pagelist
);
625 op
->indata_len
= payload_len
;
628 EXPORT_SYMBOL(osd_req_op_xattr_init
);
630 void osd_req_op_watch_init(struct ceph_osd_request
*osd_req
,
631 unsigned int which
, u16 opcode
,
632 u64 cookie
, u64 version
, int flag
)
634 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
637 BUG_ON(opcode
!= CEPH_OSD_OP_NOTIFY_ACK
&& opcode
!= CEPH_OSD_OP_WATCH
);
639 op
->watch
.cookie
= cookie
;
640 op
->watch
.ver
= version
;
641 if (opcode
== CEPH_OSD_OP_WATCH
&& flag
)
642 op
->watch
.flag
= (u8
)1;
644 EXPORT_SYMBOL(osd_req_op_watch_init
);
646 void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
648 u64 expected_object_size
,
649 u64 expected_write_size
)
651 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
652 CEPH_OSD_OP_SETALLOCHINT
,
655 op
->alloc_hint
.expected_object_size
= expected_object_size
;
656 op
->alloc_hint
.expected_write_size
= expected_write_size
;
659 * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
660 * not worth a feature bit. Set FAILOK per-op flag to make
661 * sure older osds don't trip over an unsupported opcode.
663 op
->flags
|= CEPH_OSD_OP_FLAG_FAILOK
;
665 EXPORT_SYMBOL(osd_req_op_alloc_hint_init
);
667 static void ceph_osdc_msg_data_add(struct ceph_msg
*msg
,
668 struct ceph_osd_data
*osd_data
)
670 u64 length
= ceph_osd_data_length(osd_data
);
672 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
673 BUG_ON(length
> (u64
) SIZE_MAX
);
675 ceph_msg_data_add_pages(msg
, osd_data
->pages
,
676 length
, osd_data
->alignment
);
677 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGELIST
) {
679 ceph_msg_data_add_pagelist(msg
, osd_data
->pagelist
);
681 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_BIO
) {
682 ceph_msg_data_add_bio(msg
, osd_data
->bio
, length
);
685 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_NONE
);
689 static u64
osd_req_encode_op(struct ceph_osd_request
*req
,
690 struct ceph_osd_op
*dst
, unsigned int which
)
692 struct ceph_osd_req_op
*src
;
693 struct ceph_osd_data
*osd_data
;
694 u64 request_data_len
= 0;
697 BUG_ON(which
>= req
->r_num_ops
);
698 src
= &req
->r_ops
[which
];
699 if (WARN_ON(!osd_req_opcode_valid(src
->op
))) {
700 pr_err("unrecognized osd opcode %d\n", src
->op
);
706 case CEPH_OSD_OP_STAT
:
707 osd_data
= &src
->raw_data_in
;
708 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
710 case CEPH_OSD_OP_READ
:
711 case CEPH_OSD_OP_WRITE
:
712 case CEPH_OSD_OP_WRITEFULL
:
713 case CEPH_OSD_OP_ZERO
:
714 case CEPH_OSD_OP_TRUNCATE
:
715 if (src
->op
== CEPH_OSD_OP_WRITE
||
716 src
->op
== CEPH_OSD_OP_WRITEFULL
)
717 request_data_len
= src
->extent
.length
;
718 dst
->extent
.offset
= cpu_to_le64(src
->extent
.offset
);
719 dst
->extent
.length
= cpu_to_le64(src
->extent
.length
);
720 dst
->extent
.truncate_size
=
721 cpu_to_le64(src
->extent
.truncate_size
);
722 dst
->extent
.truncate_seq
=
723 cpu_to_le32(src
->extent
.truncate_seq
);
724 osd_data
= &src
->extent
.osd_data
;
725 if (src
->op
== CEPH_OSD_OP_WRITE
||
726 src
->op
== CEPH_OSD_OP_WRITEFULL
)
727 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
729 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
731 case CEPH_OSD_OP_CALL
:
732 dst
->cls
.class_len
= src
->cls
.class_len
;
733 dst
->cls
.method_len
= src
->cls
.method_len
;
734 osd_data
= &src
->cls
.request_info
;
735 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
736 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGELIST
);
737 request_data_len
= osd_data
->pagelist
->length
;
739 osd_data
= &src
->cls
.request_data
;
740 data_length
= ceph_osd_data_length(osd_data
);
742 BUG_ON(osd_data
->type
== CEPH_OSD_DATA_TYPE_NONE
);
743 dst
->cls
.indata_len
= cpu_to_le32(data_length
);
744 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
745 src
->indata_len
+= data_length
;
746 request_data_len
+= data_length
;
748 osd_data
= &src
->cls
.response_data
;
749 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
751 case CEPH_OSD_OP_STARTSYNC
:
753 case CEPH_OSD_OP_NOTIFY_ACK
:
754 case CEPH_OSD_OP_WATCH
:
755 dst
->watch
.cookie
= cpu_to_le64(src
->watch
.cookie
);
756 dst
->watch
.ver
= cpu_to_le64(src
->watch
.ver
);
757 dst
->watch
.flag
= src
->watch
.flag
;
759 case CEPH_OSD_OP_SETALLOCHINT
:
760 dst
->alloc_hint
.expected_object_size
=
761 cpu_to_le64(src
->alloc_hint
.expected_object_size
);
762 dst
->alloc_hint
.expected_write_size
=
763 cpu_to_le64(src
->alloc_hint
.expected_write_size
);
765 case CEPH_OSD_OP_SETXATTR
:
766 case CEPH_OSD_OP_CMPXATTR
:
767 dst
->xattr
.name_len
= cpu_to_le32(src
->xattr
.name_len
);
768 dst
->xattr
.value_len
= cpu_to_le32(src
->xattr
.value_len
);
769 dst
->xattr
.cmp_op
= src
->xattr
.cmp_op
;
770 dst
->xattr
.cmp_mode
= src
->xattr
.cmp_mode
;
771 osd_data
= &src
->xattr
.osd_data
;
772 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
773 request_data_len
= osd_data
->pagelist
->length
;
775 case CEPH_OSD_OP_CREATE
:
776 case CEPH_OSD_OP_DELETE
:
779 pr_err("unsupported osd opcode %s\n",
780 ceph_osd_op_name(src
->op
));
786 dst
->op
= cpu_to_le16(src
->op
);
787 dst
->flags
= cpu_to_le32(src
->flags
);
788 dst
->payload_len
= cpu_to_le32(src
->indata_len
);
790 return request_data_len
;
794 * build new request AND message, calculate layout, and adjust file
797 * if the file was recently truncated, we include information about its
798 * old and new size so that the object can be updated appropriately. (we
799 * avoid synchronously deleting truncated objects because it's slow.)
801 * if @do_sync, include a 'startsync' command so that the osd will flush
804 struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*osdc
,
805 struct ceph_file_layout
*layout
,
806 struct ceph_vino vino
,
808 unsigned int which
, int num_ops
,
809 int opcode
, int flags
,
810 struct ceph_snap_context
*snapc
,
815 struct ceph_osd_request
*req
;
821 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
822 opcode
!= CEPH_OSD_OP_ZERO
&& opcode
!= CEPH_OSD_OP_TRUNCATE
&&
823 opcode
!= CEPH_OSD_OP_CREATE
&& opcode
!= CEPH_OSD_OP_DELETE
);
825 req
= ceph_osdc_alloc_request(osdc
, snapc
, num_ops
, use_mempool
,
828 return ERR_PTR(-ENOMEM
);
830 req
->r_flags
= flags
;
832 /* calculate max write size */
833 r
= calc_layout(layout
, off
, plen
, &objnum
, &objoff
, &objlen
);
835 ceph_osdc_put_request(req
);
839 if (opcode
== CEPH_OSD_OP_CREATE
|| opcode
== CEPH_OSD_OP_DELETE
) {
840 osd_req_op_init(req
, which
, opcode
, 0);
842 u32 object_size
= le32_to_cpu(layout
->fl_object_size
);
843 u32 object_base
= off
- objoff
;
844 if (!(truncate_seq
== 1 && truncate_size
== -1ULL)) {
845 if (truncate_size
<= object_base
) {
848 truncate_size
-= object_base
;
849 if (truncate_size
> object_size
)
850 truncate_size
= object_size
;
853 osd_req_op_extent_init(req
, which
, opcode
, objoff
, objlen
,
854 truncate_size
, truncate_seq
);
857 req
->r_base_oloc
.pool
= ceph_file_layout_pg_pool(*layout
);
859 snprintf(req
->r_base_oid
.name
, sizeof(req
->r_base_oid
.name
),
860 "%llx.%08llx", vino
.ino
, objnum
);
861 req
->r_base_oid
.name_len
= strlen(req
->r_base_oid
.name
);
865 EXPORT_SYMBOL(ceph_osdc_new_request
);
868 * We keep osd requests in an rbtree, sorted by ->r_tid.
870 static void __insert_request(struct ceph_osd_client
*osdc
,
871 struct ceph_osd_request
*new)
873 struct rb_node
**p
= &osdc
->requests
.rb_node
;
874 struct rb_node
*parent
= NULL
;
875 struct ceph_osd_request
*req
= NULL
;
879 req
= rb_entry(parent
, struct ceph_osd_request
, r_node
);
880 if (new->r_tid
< req
->r_tid
)
882 else if (new->r_tid
> req
->r_tid
)
888 rb_link_node(&new->r_node
, parent
, p
);
889 rb_insert_color(&new->r_node
, &osdc
->requests
);
892 static struct ceph_osd_request
*__lookup_request(struct ceph_osd_client
*osdc
,
895 struct ceph_osd_request
*req
;
896 struct rb_node
*n
= osdc
->requests
.rb_node
;
899 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
900 if (tid
< req
->r_tid
)
902 else if (tid
> req
->r_tid
)
910 static struct ceph_osd_request
*
911 __lookup_request_ge(struct ceph_osd_client
*osdc
,
914 struct ceph_osd_request
*req
;
915 struct rb_node
*n
= osdc
->requests
.rb_node
;
918 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
919 if (tid
< req
->r_tid
) {
923 } else if (tid
> req
->r_tid
) {
932 static void __kick_linger_request(struct ceph_osd_request
*req
)
934 struct ceph_osd_client
*osdc
= req
->r_osdc
;
935 struct ceph_osd
*osd
= req
->r_osd
;
938 * Linger requests need to be resent with a new tid to avoid
939 * the dup op detection logic on the OSDs. Achieve this with
940 * a re-register dance instead of open-coding.
942 ceph_osdc_get_request(req
);
943 if (!list_empty(&req
->r_linger_item
))
944 __unregister_linger_request(osdc
, req
);
946 __unregister_request(osdc
, req
);
947 __register_request(osdc
, req
);
948 ceph_osdc_put_request(req
);
951 * Unless request has been registered as both normal and
952 * lingering, __unregister{,_linger}_request clears r_osd.
953 * However, here we need to preserve r_osd to make sure we
954 * requeue on the same OSD.
956 WARN_ON(req
->r_osd
|| !osd
);
959 dout("%s requeueing %p tid %llu\n", __func__
, req
, req
->r_tid
);
960 __enqueue_request(req
);
964 * Resubmit requests pending on the given osd.
966 static void __kick_osd_requests(struct ceph_osd_client
*osdc
,
967 struct ceph_osd
*osd
)
969 struct ceph_osd_request
*req
, *nreq
;
971 LIST_HEAD(resend_linger
);
974 dout("%s osd%d\n", __func__
, osd
->o_osd
);
975 err
= __reset_osd(osdc
, osd
);
980 * Build up a list of requests to resend by traversing the
981 * osd's list of requests. Requests for a given object are
982 * sent in tid order, and that is also the order they're
983 * kept on this list. Therefore all requests that are in
984 * flight will be found first, followed by all requests that
985 * have not yet been sent. And to resend requests while
986 * preserving this order we will want to put any sent
987 * requests back on the front of the osd client's unsent
990 * So we build a separate ordered list of already-sent
991 * requests for the affected osd and splice it onto the
992 * front of the osd client's unsent list. Once we've seen a
993 * request that has not yet been sent we're done. Those
994 * requests are already sitting right where they belong.
996 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
) {
1000 if (!req
->r_linger
) {
1001 dout("%s requeueing %p tid %llu\n", __func__
, req
,
1003 list_move_tail(&req
->r_req_lru_item
, &resend
);
1004 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
1006 list_move_tail(&req
->r_req_lru_item
, &resend_linger
);
1009 list_splice(&resend
, &osdc
->req_unsent
);
1012 * Both registered and not yet registered linger requests are
1013 * enqueued with a new tid on the same OSD. We add/move them
1014 * to req_unsent/o_requests at the end to keep things in tid
1017 list_for_each_entry_safe(req
, nreq
, &osd
->o_linger_requests
,
1018 r_linger_osd_item
) {
1019 WARN_ON(!list_empty(&req
->r_req_lru_item
));
1020 __kick_linger_request(req
);
1023 list_for_each_entry_safe(req
, nreq
, &resend_linger
, r_req_lru_item
)
1024 __kick_linger_request(req
);
1028 * If the osd connection drops, we need to resubmit all requests.
1030 static void osd_reset(struct ceph_connection
*con
)
1032 struct ceph_osd
*osd
= con
->private;
1033 struct ceph_osd_client
*osdc
;
1037 dout("osd_reset osd%d\n", osd
->o_osd
);
1039 down_read(&osdc
->map_sem
);
1040 mutex_lock(&osdc
->request_mutex
);
1041 __kick_osd_requests(osdc
, osd
);
1042 __send_queued(osdc
);
1043 mutex_unlock(&osdc
->request_mutex
);
1044 up_read(&osdc
->map_sem
);
1048 * Track open sessions with osds.
1050 static struct ceph_osd
*create_osd(struct ceph_osd_client
*osdc
, int onum
)
1052 struct ceph_osd
*osd
;
1054 osd
= kzalloc(sizeof(*osd
), GFP_NOFS
);
1058 atomic_set(&osd
->o_ref
, 1);
1061 RB_CLEAR_NODE(&osd
->o_node
);
1062 INIT_LIST_HEAD(&osd
->o_requests
);
1063 INIT_LIST_HEAD(&osd
->o_linger_requests
);
1064 INIT_LIST_HEAD(&osd
->o_osd_lru
);
1065 osd
->o_incarnation
= 1;
1067 ceph_con_init(&osd
->o_con
, osd
, &osd_con_ops
, &osdc
->client
->msgr
);
1069 INIT_LIST_HEAD(&osd
->o_keepalive_item
);
1073 static struct ceph_osd
*get_osd(struct ceph_osd
*osd
)
1075 if (atomic_inc_not_zero(&osd
->o_ref
)) {
1076 dout("get_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
)-1,
1077 atomic_read(&osd
->o_ref
));
1080 dout("get_osd %p FAIL\n", osd
);
1085 static void put_osd(struct ceph_osd
*osd
)
1087 dout("put_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
),
1088 atomic_read(&osd
->o_ref
) - 1);
1089 if (atomic_dec_and_test(&osd
->o_ref
)) {
1090 if (osd
->o_auth
.authorizer
)
1091 ceph_auth_destroy_authorizer(osd
->o_auth
.authorizer
);
1097 * remove an osd from our map
1099 static void __remove_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1101 dout("%s %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1102 WARN_ON(!list_empty(&osd
->o_requests
));
1103 WARN_ON(!list_empty(&osd
->o_linger_requests
));
1105 list_del_init(&osd
->o_osd_lru
);
1106 rb_erase(&osd
->o_node
, &osdc
->osds
);
1107 RB_CLEAR_NODE(&osd
->o_node
);
1110 static void remove_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1112 dout("%s %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1114 if (!RB_EMPTY_NODE(&osd
->o_node
)) {
1115 ceph_con_close(&osd
->o_con
);
1116 __remove_osd(osdc
, osd
);
1121 static void remove_all_osds(struct ceph_osd_client
*osdc
)
1123 dout("%s %p\n", __func__
, osdc
);
1124 mutex_lock(&osdc
->request_mutex
);
1125 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
1126 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
1127 struct ceph_osd
, o_node
);
1128 remove_osd(osdc
, osd
);
1130 mutex_unlock(&osdc
->request_mutex
);
1133 static void __move_osd_to_lru(struct ceph_osd_client
*osdc
,
1134 struct ceph_osd
*osd
)
1136 dout("%s %p\n", __func__
, osd
);
1137 BUG_ON(!list_empty(&osd
->o_osd_lru
));
1139 list_add_tail(&osd
->o_osd_lru
, &osdc
->osd_lru
);
1140 osd
->lru_ttl
= jiffies
+ osdc
->client
->options
->osd_idle_ttl
;
1143 static void maybe_move_osd_to_lru(struct ceph_osd_client
*osdc
,
1144 struct ceph_osd
*osd
)
1146 dout("%s %p\n", __func__
, osd
);
1148 if (list_empty(&osd
->o_requests
) &&
1149 list_empty(&osd
->o_linger_requests
))
1150 __move_osd_to_lru(osdc
, osd
);
1153 static void __remove_osd_from_lru(struct ceph_osd
*osd
)
1155 dout("__remove_osd_from_lru %p\n", osd
);
1156 if (!list_empty(&osd
->o_osd_lru
))
1157 list_del_init(&osd
->o_osd_lru
);
1160 static void remove_old_osds(struct ceph_osd_client
*osdc
)
1162 struct ceph_osd
*osd
, *nosd
;
1164 dout("__remove_old_osds %p\n", osdc
);
1165 mutex_lock(&osdc
->request_mutex
);
1166 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
1167 if (time_before(jiffies
, osd
->lru_ttl
))
1169 remove_osd(osdc
, osd
);
1171 mutex_unlock(&osdc
->request_mutex
);
1177 static int __reset_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1179 struct ceph_entity_addr
*peer_addr
;
1181 dout("__reset_osd %p osd%d\n", osd
, osd
->o_osd
);
1182 if (list_empty(&osd
->o_requests
) &&
1183 list_empty(&osd
->o_linger_requests
)) {
1184 remove_osd(osdc
, osd
);
1188 peer_addr
= &osdc
->osdmap
->osd_addr
[osd
->o_osd
];
1189 if (!memcmp(peer_addr
, &osd
->o_con
.peer_addr
, sizeof (*peer_addr
)) &&
1190 !ceph_con_opened(&osd
->o_con
)) {
1191 struct ceph_osd_request
*req
;
1193 dout("osd addr hasn't changed and connection never opened, "
1194 "letting msgr retry\n");
1195 /* touch each r_stamp for handle_timeout()'s benfit */
1196 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
)
1197 req
->r_stamp
= jiffies
;
1202 ceph_con_close(&osd
->o_con
);
1203 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
, peer_addr
);
1204 osd
->o_incarnation
++;
1209 static void __insert_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*new)
1211 struct rb_node
**p
= &osdc
->osds
.rb_node
;
1212 struct rb_node
*parent
= NULL
;
1213 struct ceph_osd
*osd
= NULL
;
1215 dout("__insert_osd %p osd%d\n", new, new->o_osd
);
1218 osd
= rb_entry(parent
, struct ceph_osd
, o_node
);
1219 if (new->o_osd
< osd
->o_osd
)
1221 else if (new->o_osd
> osd
->o_osd
)
1222 p
= &(*p
)->rb_right
;
1227 rb_link_node(&new->o_node
, parent
, p
);
1228 rb_insert_color(&new->o_node
, &osdc
->osds
);
1231 static struct ceph_osd
*__lookup_osd(struct ceph_osd_client
*osdc
, int o
)
1233 struct ceph_osd
*osd
;
1234 struct rb_node
*n
= osdc
->osds
.rb_node
;
1237 osd
= rb_entry(n
, struct ceph_osd
, o_node
);
1240 else if (o
> osd
->o_osd
)
1248 static void __schedule_osd_timeout(struct ceph_osd_client
*osdc
)
1250 schedule_delayed_work(&osdc
->timeout_work
,
1251 osdc
->client
->options
->osd_keepalive_timeout
);
1254 static void __cancel_osd_timeout(struct ceph_osd_client
*osdc
)
1256 cancel_delayed_work(&osdc
->timeout_work
);
1260 * Register request, assign tid. If this is the first request, set up
1261 * the timeout event.
1263 static void __register_request(struct ceph_osd_client
*osdc
,
1264 struct ceph_osd_request
*req
)
1266 req
->r_tid
= ++osdc
->last_tid
;
1267 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1268 dout("__register_request %p tid %lld\n", req
, req
->r_tid
);
1269 __insert_request(osdc
, req
);
1270 ceph_osdc_get_request(req
);
1271 osdc
->num_requests
++;
1272 if (osdc
->num_requests
== 1) {
1273 dout(" first request, scheduling timeout\n");
1274 __schedule_osd_timeout(osdc
);
1279 * called under osdc->request_mutex
1281 static void __unregister_request(struct ceph_osd_client
*osdc
,
1282 struct ceph_osd_request
*req
)
1284 if (RB_EMPTY_NODE(&req
->r_node
)) {
1285 dout("__unregister_request %p tid %lld not registered\n",
1290 dout("__unregister_request %p tid %lld\n", req
, req
->r_tid
);
1291 rb_erase(&req
->r_node
, &osdc
->requests
);
1292 RB_CLEAR_NODE(&req
->r_node
);
1293 osdc
->num_requests
--;
1296 /* make sure the original request isn't in flight. */
1297 ceph_msg_revoke(req
->r_request
);
1299 list_del_init(&req
->r_osd_item
);
1300 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1301 if (list_empty(&req
->r_linger_osd_item
))
1305 list_del_init(&req
->r_req_lru_item
);
1306 ceph_osdc_put_request(req
);
1308 if (osdc
->num_requests
== 0) {
1309 dout(" no requests, canceling timeout\n");
1310 __cancel_osd_timeout(osdc
);
1315 * Cancel a previously queued request message
1317 static void __cancel_request(struct ceph_osd_request
*req
)
1319 if (req
->r_sent
&& req
->r_osd
) {
1320 ceph_msg_revoke(req
->r_request
);
1325 static void __register_linger_request(struct ceph_osd_client
*osdc
,
1326 struct ceph_osd_request
*req
)
1328 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1329 WARN_ON(!req
->r_linger
);
1331 ceph_osdc_get_request(req
);
1332 list_add_tail(&req
->r_linger_item
, &osdc
->req_linger
);
1334 list_add_tail(&req
->r_linger_osd_item
,
1335 &req
->r_osd
->o_linger_requests
);
1338 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
1339 struct ceph_osd_request
*req
)
1341 WARN_ON(!req
->r_linger
);
1343 if (list_empty(&req
->r_linger_item
)) {
1344 dout("%s %p tid %llu not registered\n", __func__
, req
,
1349 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1350 list_del_init(&req
->r_linger_item
);
1353 list_del_init(&req
->r_linger_osd_item
);
1354 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1355 if (list_empty(&req
->r_osd_item
))
1358 ceph_osdc_put_request(req
);
1361 void ceph_osdc_set_request_linger(struct ceph_osd_client
*osdc
,
1362 struct ceph_osd_request
*req
)
1364 if (!req
->r_linger
) {
1365 dout("set_request_linger %p\n", req
);
1369 EXPORT_SYMBOL(ceph_osdc_set_request_linger
);
1372 * Returns whether a request should be blocked from being sent
1373 * based on the current osdmap and osd_client settings.
1375 * Caller should hold map_sem for read.
1377 static bool __req_should_be_paused(struct ceph_osd_client
*osdc
,
1378 struct ceph_osd_request
*req
)
1380 bool pauserd
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
);
1381 bool pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
1382 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
1383 return (req
->r_flags
& CEPH_OSD_FLAG_READ
&& pauserd
) ||
1384 (req
->r_flags
& CEPH_OSD_FLAG_WRITE
&& pausewr
);
1388 * Calculate mapping of a request to a PG. Takes tiering into account.
1390 static int __calc_request_pg(struct ceph_osdmap
*osdmap
,
1391 struct ceph_osd_request
*req
,
1392 struct ceph_pg
*pg_out
)
1394 bool need_check_tiering
;
1396 need_check_tiering
= false;
1397 if (req
->r_target_oloc
.pool
== -1) {
1398 req
->r_target_oloc
= req
->r_base_oloc
; /* struct */
1399 need_check_tiering
= true;
1401 if (req
->r_target_oid
.name_len
== 0) {
1402 ceph_oid_copy(&req
->r_target_oid
, &req
->r_base_oid
);
1403 need_check_tiering
= true;
1406 if (need_check_tiering
&&
1407 (req
->r_flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1408 struct ceph_pg_pool_info
*pi
;
1410 pi
= ceph_pg_pool_by_id(osdmap
, req
->r_target_oloc
.pool
);
1412 if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1414 req
->r_target_oloc
.pool
= pi
->read_tier
;
1415 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1416 pi
->write_tier
>= 0)
1417 req
->r_target_oloc
.pool
= pi
->write_tier
;
1419 /* !pi is caught in ceph_oloc_oid_to_pg() */
1422 return ceph_oloc_oid_to_pg(osdmap
, &req
->r_target_oloc
,
1423 &req
->r_target_oid
, pg_out
);
1426 static void __enqueue_request(struct ceph_osd_request
*req
)
1428 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1430 dout("%s %p tid %llu to osd%d\n", __func__
, req
, req
->r_tid
,
1431 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1434 __remove_osd_from_lru(req
->r_osd
);
1435 list_add_tail(&req
->r_osd_item
, &req
->r_osd
->o_requests
);
1436 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_unsent
);
1438 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1443 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
1444 * (as needed), and set the request r_osd appropriately. If there is
1445 * no up osd, set r_osd to NULL. Move the request to the appropriate list
1446 * (unsent, homeless) or leave on in-flight lru.
1448 * Return 0 if unchanged, 1 if changed, or negative on error.
1450 * Caller should hold map_sem for read and request_mutex.
1452 static int __map_request(struct ceph_osd_client
*osdc
,
1453 struct ceph_osd_request
*req
, int force_resend
)
1455 struct ceph_pg pgid
;
1456 int acting
[CEPH_PG_MAX_SIZE
];
1461 dout("map_request %p tid %lld\n", req
, req
->r_tid
);
1463 err
= __calc_request_pg(osdc
->osdmap
, req
, &pgid
);
1465 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1470 num
= ceph_calc_pg_acting(osdc
->osdmap
, pgid
, acting
, &o
);
1474 was_paused
= req
->r_paused
;
1475 req
->r_paused
= __req_should_be_paused(osdc
, req
);
1476 if (was_paused
&& !req
->r_paused
)
1479 if ((!force_resend
&&
1480 req
->r_osd
&& req
->r_osd
->o_osd
== o
&&
1481 req
->r_sent
>= req
->r_osd
->o_incarnation
&&
1482 req
->r_num_pg_osds
== num
&&
1483 memcmp(req
->r_pg_osds
, acting
, sizeof(acting
[0])*num
) == 0) ||
1484 (req
->r_osd
== NULL
&& o
== -1) ||
1486 return 0; /* no change */
1488 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
1489 req
->r_tid
, pgid
.pool
, pgid
.seed
, o
,
1490 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1492 /* record full pg acting set */
1493 memcpy(req
->r_pg_osds
, acting
, sizeof(acting
[0]) * num
);
1494 req
->r_num_pg_osds
= num
;
1497 __cancel_request(req
);
1498 list_del_init(&req
->r_osd_item
);
1499 list_del_init(&req
->r_linger_osd_item
);
1503 req
->r_osd
= __lookup_osd(osdc
, o
);
1504 if (!req
->r_osd
&& o
>= 0) {
1506 req
->r_osd
= create_osd(osdc
, o
);
1508 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1512 dout("map_request osd %p is osd%d\n", req
->r_osd
, o
);
1513 __insert_osd(osdc
, req
->r_osd
);
1515 ceph_con_open(&req
->r_osd
->o_con
,
1516 CEPH_ENTITY_TYPE_OSD
, o
,
1517 &osdc
->osdmap
->osd_addr
[o
]);
1520 __enqueue_request(req
);
1521 err
= 1; /* osd or pg changed */
1528 * caller should hold map_sem (for read) and request_mutex
1530 static void __send_request(struct ceph_osd_client
*osdc
,
1531 struct ceph_osd_request
*req
)
1535 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1536 req
, req
->r_tid
, req
->r_osd
->o_osd
, req
->r_flags
,
1537 (unsigned long long)req
->r_pgid
.pool
, req
->r_pgid
.seed
);
1539 /* fill in message content that changes each time we send it */
1540 put_unaligned_le32(osdc
->osdmap
->epoch
, req
->r_request_osdmap_epoch
);
1541 put_unaligned_le32(req
->r_flags
, req
->r_request_flags
);
1542 put_unaligned_le64(req
->r_target_oloc
.pool
, req
->r_request_pool
);
1543 p
= req
->r_request_pgid
;
1544 ceph_encode_64(&p
, req
->r_pgid
.pool
);
1545 ceph_encode_32(&p
, req
->r_pgid
.seed
);
1546 put_unaligned_le64(1, req
->r_request_attempts
); /* FIXME */
1547 memcpy(req
->r_request_reassert_version
, &req
->r_reassert_version
,
1548 sizeof(req
->r_reassert_version
));
1550 req
->r_stamp
= jiffies
;
1551 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_lru
);
1553 ceph_msg_get(req
->r_request
); /* send consumes a ref */
1555 req
->r_sent
= req
->r_osd
->o_incarnation
;
1557 ceph_con_send(&req
->r_osd
->o_con
, req
->r_request
);
1561 * Send any requests in the queue (req_unsent).
1563 static void __send_queued(struct ceph_osd_client
*osdc
)
1565 struct ceph_osd_request
*req
, *tmp
;
1567 dout("__send_queued\n");
1568 list_for_each_entry_safe(req
, tmp
, &osdc
->req_unsent
, r_req_lru_item
)
1569 __send_request(osdc
, req
);
1573 * Caller should hold map_sem for read and request_mutex.
1575 static int __ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
1576 struct ceph_osd_request
*req
,
1581 __register_request(osdc
, req
);
1583 req
->r_got_reply
= 0;
1584 rc
= __map_request(osdc
, req
, 0);
1587 dout("osdc_start_request failed map, "
1588 " will retry %lld\n", req
->r_tid
);
1591 __unregister_request(osdc
, req
);
1596 if (req
->r_osd
== NULL
) {
1597 dout("send_request %p no up osds in pg\n", req
);
1598 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1600 __send_queued(osdc
);
1607 * Timeout callback, called every N seconds when 1 or more osd
1608 * requests has been active for more than N seconds. When this
1609 * happens, we ping all OSDs with requests who have timed out to
1610 * ensure any communications channel reset is detected. Reset the
1611 * request timeouts another N seconds in the future as we go.
1612 * Reschedule the timeout event another N seconds in future (unless
1613 * there are no open requests).
1615 static void handle_timeout(struct work_struct
*work
)
1617 struct ceph_osd_client
*osdc
=
1618 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
1619 struct ceph_options
*opts
= osdc
->client
->options
;
1620 struct ceph_osd_request
*req
;
1621 struct ceph_osd
*osd
;
1622 struct list_head slow_osds
;
1624 down_read(&osdc
->map_sem
);
1626 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1628 mutex_lock(&osdc
->request_mutex
);
1631 * ping osds that are a bit slow. this ensures that if there
1632 * is a break in the TCP connection we will notice, and reopen
1633 * a connection with that osd (from the fault callback).
1635 INIT_LIST_HEAD(&slow_osds
);
1636 list_for_each_entry(req
, &osdc
->req_lru
, r_req_lru_item
) {
1637 if (time_before(jiffies
,
1638 req
->r_stamp
+ opts
->osd_keepalive_timeout
))
1643 dout(" tid %llu is slow, will send keepalive on osd%d\n",
1644 req
->r_tid
, osd
->o_osd
);
1645 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
1647 while (!list_empty(&slow_osds
)) {
1648 osd
= list_entry(slow_osds
.next
, struct ceph_osd
,
1650 list_del_init(&osd
->o_keepalive_item
);
1651 ceph_con_keepalive(&osd
->o_con
);
1654 __schedule_osd_timeout(osdc
);
1655 __send_queued(osdc
);
1656 mutex_unlock(&osdc
->request_mutex
);
1657 up_read(&osdc
->map_sem
);
1660 static void handle_osds_timeout(struct work_struct
*work
)
1662 struct ceph_osd_client
*osdc
=
1663 container_of(work
, struct ceph_osd_client
,
1664 osds_timeout_work
.work
);
1665 unsigned long delay
= osdc
->client
->options
->osd_idle_ttl
/ 4;
1667 dout("osds timeout\n");
1668 down_read(&osdc
->map_sem
);
1669 remove_old_osds(osdc
);
1670 up_read(&osdc
->map_sem
);
1672 schedule_delayed_work(&osdc
->osds_timeout_work
,
1673 round_jiffies_relative(delay
));
1676 static int ceph_oloc_decode(void **p
, void *end
,
1677 struct ceph_object_locator
*oloc
)
1679 u8 struct_v
, struct_cv
;
1684 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1685 struct_v
= ceph_decode_8(p
);
1686 struct_cv
= ceph_decode_8(p
);
1688 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
1689 struct_v
, struct_cv
);
1692 if (struct_cv
> 6) {
1693 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
1694 struct_v
, struct_cv
);
1697 len
= ceph_decode_32(p
);
1698 ceph_decode_need(p
, end
, len
, e_inval
);
1699 struct_end
= *p
+ len
;
1701 oloc
->pool
= ceph_decode_64(p
);
1702 *p
+= 4; /* skip preferred */
1704 len
= ceph_decode_32(p
);
1706 pr_warn("ceph_object_locator::key is set\n");
1710 if (struct_v
>= 5) {
1711 len
= ceph_decode_32(p
);
1713 pr_warn("ceph_object_locator::nspace is set\n");
1718 if (struct_v
>= 6) {
1719 s64 hash
= ceph_decode_64(p
);
1721 pr_warn("ceph_object_locator::hash is set\n");
1736 static int ceph_redirect_decode(void **p
, void *end
,
1737 struct ceph_request_redirect
*redir
)
1739 u8 struct_v
, struct_cv
;
1744 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1745 struct_v
= ceph_decode_8(p
);
1746 struct_cv
= ceph_decode_8(p
);
1747 if (struct_cv
> 1) {
1748 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
1749 struct_v
, struct_cv
);
1752 len
= ceph_decode_32(p
);
1753 ceph_decode_need(p
, end
, len
, e_inval
);
1754 struct_end
= *p
+ len
;
1756 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
1760 len
= ceph_decode_32(p
);
1762 pr_warn("ceph_request_redirect::object_name is set\n");
1766 len
= ceph_decode_32(p
);
1767 *p
+= len
; /* skip osd_instructions */
1779 static void complete_request(struct ceph_osd_request
*req
)
1781 complete_all(&req
->r_safe_completion
); /* fsync waiter */
1785 * handle osd op reply. either call the callback if it is specified,
1786 * or do the completion to wake up the waiting thread.
1788 static void handle_reply(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
1791 struct ceph_osd_request
*req
;
1792 struct ceph_request_redirect redir
;
1795 unsigned int numops
;
1796 int payload_len
, flags
;
1802 u64 reassert_version
;
1804 int already_completed
;
1809 tid
= le64_to_cpu(msg
->hdr
.tid
);
1810 dout("handle_reply %p tid %llu\n", msg
, tid
);
1812 p
= msg
->front
.iov_base
;
1813 end
= p
+ msg
->front
.iov_len
;
1815 ceph_decode_need(&p
, end
, 4, bad
);
1816 object_len
= ceph_decode_32(&p
);
1817 ceph_decode_need(&p
, end
, object_len
, bad
);
1820 err
= ceph_decode_pgid(&p
, end
, &pg
);
1824 ceph_decode_need(&p
, end
, 8 + 4 + 4 + 8 + 4, bad
);
1825 flags
= ceph_decode_64(&p
);
1826 result
= ceph_decode_32(&p
);
1827 reassert_epoch
= ceph_decode_32(&p
);
1828 reassert_version
= ceph_decode_64(&p
);
1829 osdmap_epoch
= ceph_decode_32(&p
);
1832 down_read(&osdc
->map_sem
);
1833 mutex_lock(&osdc
->request_mutex
);
1834 req
= __lookup_request(osdc
, tid
);
1836 dout("handle_reply tid %llu dne\n", tid
);
1839 ceph_osdc_get_request(req
);
1841 dout("handle_reply %p tid %llu req %p result %d\n", msg
, tid
,
1844 ceph_decode_need(&p
, end
, 4, bad_put
);
1845 numops
= ceph_decode_32(&p
);
1846 if (numops
> CEPH_OSD_MAX_OPS
)
1848 if (numops
!= req
->r_num_ops
)
1851 ceph_decode_need(&p
, end
, numops
* sizeof(struct ceph_osd_op
), bad_put
);
1852 for (i
= 0; i
< numops
; i
++) {
1853 struct ceph_osd_op
*op
= p
;
1856 len
= le32_to_cpu(op
->payload_len
);
1857 req
->r_ops
[i
].outdata_len
= len
;
1858 dout(" op %d has %d bytes\n", i
, len
);
1862 bytes
= le32_to_cpu(msg
->hdr
.data_len
);
1863 if (payload_len
!= bytes
) {
1864 pr_warn("sum of op payload lens %d != data_len %d\n",
1865 payload_len
, bytes
);
1869 ceph_decode_need(&p
, end
, 4 + numops
* 4, bad_put
);
1870 retry_attempt
= ceph_decode_32(&p
);
1871 for (i
= 0; i
< numops
; i
++)
1872 req
->r_ops
[i
].rval
= ceph_decode_32(&p
);
1874 if (le16_to_cpu(msg
->hdr
.version
) >= 6) {
1875 p
+= 8 + 4; /* skip replay_version */
1876 p
+= 8; /* skip user_version */
1878 if (le16_to_cpu(msg
->hdr
.version
) >= 7)
1879 ceph_decode_8_safe(&p
, end
, decode_redir
, bad_put
);
1887 err
= ceph_redirect_decode(&p
, end
, &redir
);
1891 redir
.oloc
.pool
= -1;
1894 if (redir
.oloc
.pool
!= -1) {
1895 dout("redirect pool %lld\n", redir
.oloc
.pool
);
1897 __unregister_request(osdc
, req
);
1899 req
->r_target_oloc
= redir
.oloc
; /* struct */
1902 * Start redirect requests with nofail=true. If
1903 * mapping fails, request will end up on the notarget
1904 * list, waiting for the new osdmap (which can take
1905 * a while), even though the original request mapped
1906 * successfully. In the future we might want to follow
1907 * original request's nofail setting here.
1909 err
= __ceph_osdc_start_request(osdc
, req
, true);
1915 already_completed
= req
->r_got_reply
;
1916 if (!req
->r_got_reply
) {
1917 req
->r_result
= result
;
1918 dout("handle_reply result %d bytes %d\n", req
->r_result
,
1920 if (req
->r_result
== 0)
1921 req
->r_result
= bytes
;
1923 /* in case this is a write and we need to replay, */
1924 req
->r_reassert_version
.epoch
= cpu_to_le32(reassert_epoch
);
1925 req
->r_reassert_version
.version
= cpu_to_le64(reassert_version
);
1927 req
->r_got_reply
= 1;
1928 } else if ((flags
& CEPH_OSD_FLAG_ONDISK
) == 0) {
1929 dout("handle_reply tid %llu dup ack\n", tid
);
1933 dout("handle_reply tid %llu flags %d\n", tid
, flags
);
1935 if (req
->r_linger
&& (flags
& CEPH_OSD_FLAG_ONDISK
))
1936 __register_linger_request(osdc
, req
);
1938 /* either this is a read, or we got the safe response */
1940 (flags
& CEPH_OSD_FLAG_ONDISK
) ||
1941 ((flags
& CEPH_OSD_FLAG_WRITE
) == 0))
1942 __unregister_request(osdc
, req
);
1944 mutex_unlock(&osdc
->request_mutex
);
1945 up_read(&osdc
->map_sem
);
1947 if (!already_completed
) {
1948 if (req
->r_unsafe_callback
&&
1949 result
>= 0 && !(flags
& CEPH_OSD_FLAG_ONDISK
))
1950 req
->r_unsafe_callback(req
, true);
1951 if (req
->r_callback
)
1952 req
->r_callback(req
, msg
);
1954 complete_all(&req
->r_completion
);
1957 if (flags
& CEPH_OSD_FLAG_ONDISK
) {
1958 if (req
->r_unsafe_callback
&& already_completed
)
1959 req
->r_unsafe_callback(req
, false);
1960 complete_request(req
);
1964 dout("req=%p req->r_linger=%d\n", req
, req
->r_linger
);
1965 ceph_osdc_put_request(req
);
1968 mutex_unlock(&osdc
->request_mutex
);
1969 up_read(&osdc
->map_sem
);
1973 req
->r_result
= -EIO
;
1974 __unregister_request(osdc
, req
);
1975 if (req
->r_callback
)
1976 req
->r_callback(req
, msg
);
1978 complete_all(&req
->r_completion
);
1979 complete_request(req
);
1980 ceph_osdc_put_request(req
);
1982 mutex_unlock(&osdc
->request_mutex
);
1983 up_read(&osdc
->map_sem
);
1985 pr_err("corrupt osd_op_reply got %d %d\n",
1986 (int)msg
->front
.iov_len
, le32_to_cpu(msg
->hdr
.front_len
));
1990 static void reset_changed_osds(struct ceph_osd_client
*osdc
)
1992 struct rb_node
*p
, *n
;
1994 dout("%s %p\n", __func__
, osdc
);
1995 for (p
= rb_first(&osdc
->osds
); p
; p
= n
) {
1996 struct ceph_osd
*osd
= rb_entry(p
, struct ceph_osd
, o_node
);
1999 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
2000 memcmp(&osd
->o_con
.peer_addr
,
2001 ceph_osd_addr(osdc
->osdmap
,
2003 sizeof(struct ceph_entity_addr
)) != 0)
2004 __reset_osd(osdc
, osd
);
2009 * Requeue requests whose mapping to an OSD has changed. If requests map to
2010 * no osd, request a new map.
2012 * Caller should hold map_sem for read.
2014 static void kick_requests(struct ceph_osd_client
*osdc
, bool force_resend
,
2015 bool force_resend_writes
)
2017 struct ceph_osd_request
*req
, *nreq
;
2021 bool force_resend_req
;
2023 dout("kick_requests %s %s\n", force_resend
? " (force resend)" : "",
2024 force_resend_writes
? " (force resend writes)" : "");
2025 mutex_lock(&osdc
->request_mutex
);
2026 for (p
= rb_first(&osdc
->requests
); p
; ) {
2027 req
= rb_entry(p
, struct ceph_osd_request
, r_node
);
2031 * For linger requests that have not yet been
2032 * registered, move them to the linger list; they'll
2033 * be sent to the osd in the loop below. Unregister
2034 * the request before re-registering it as a linger
2035 * request to ensure the __map_request() below
2036 * will decide it needs to be sent.
2038 if (req
->r_linger
&& list_empty(&req
->r_linger_item
)) {
2039 dout("%p tid %llu restart on osd%d\n",
2041 req
->r_osd
? req
->r_osd
->o_osd
: -1);
2042 ceph_osdc_get_request(req
);
2043 __unregister_request(osdc
, req
);
2044 __register_linger_request(osdc
, req
);
2045 ceph_osdc_put_request(req
);
2049 force_resend_req
= force_resend
||
2050 (force_resend_writes
&&
2051 req
->r_flags
& CEPH_OSD_FLAG_WRITE
);
2052 err
= __map_request(osdc
, req
, force_resend_req
);
2054 continue; /* error */
2055 if (req
->r_osd
== NULL
) {
2056 dout("%p tid %llu maps to no osd\n", req
, req
->r_tid
);
2057 needmap
++; /* request a newer map */
2058 } else if (err
> 0) {
2059 if (!req
->r_linger
) {
2060 dout("%p tid %llu requeued on osd%d\n", req
,
2062 req
->r_osd
? req
->r_osd
->o_osd
: -1);
2063 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
2068 list_for_each_entry_safe(req
, nreq
, &osdc
->req_linger
,
2070 dout("linger req=%p req->r_osd=%p\n", req
, req
->r_osd
);
2072 err
= __map_request(osdc
, req
,
2073 force_resend
|| force_resend_writes
);
2074 dout("__map_request returned %d\n", err
);
2076 continue; /* hrm! */
2077 if (req
->r_osd
== NULL
|| err
> 0) {
2078 if (req
->r_osd
== NULL
) {
2079 dout("lingering %p tid %llu maps to no osd\n",
2082 * A homeless lingering request makes
2083 * no sense, as it's job is to keep
2084 * a particular OSD connection open.
2085 * Request a newer map and kick the
2086 * request, knowing that it won't be
2087 * resent until we actually get a map
2088 * that can tell us where to send it.
2093 dout("kicking lingering %p tid %llu osd%d\n", req
,
2094 req
->r_tid
, req
->r_osd
? req
->r_osd
->o_osd
: -1);
2095 __register_request(osdc
, req
);
2096 __unregister_linger_request(osdc
, req
);
2099 reset_changed_osds(osdc
);
2100 mutex_unlock(&osdc
->request_mutex
);
2103 dout("%d requests for down osds, need new map\n", needmap
);
2104 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2110 * Process updated osd map.
2112 * The message contains any number of incremental and full maps, normally
2113 * indicating some sort of topology change in the cluster. Kick requests
2114 * off to different OSDs as needed.
2116 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
2118 void *p
, *end
, *next
;
2119 u32 nr_maps
, maplen
;
2121 struct ceph_osdmap
*newmap
= NULL
, *oldmap
;
2123 struct ceph_fsid fsid
;
2126 dout("handle_map have %u\n", osdc
->osdmap
? osdc
->osdmap
->epoch
: 0);
2127 p
= msg
->front
.iov_base
;
2128 end
= p
+ msg
->front
.iov_len
;
2131 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
2132 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
2133 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
2136 down_write(&osdc
->map_sem
);
2138 was_full
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
2140 /* incremental maps */
2141 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2142 dout(" %d inc maps\n", nr_maps
);
2143 while (nr_maps
> 0) {
2144 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2145 epoch
= ceph_decode_32(&p
);
2146 maplen
= ceph_decode_32(&p
);
2147 ceph_decode_need(&p
, end
, maplen
, bad
);
2149 if (osdc
->osdmap
&& osdc
->osdmap
->epoch
+1 == epoch
) {
2150 dout("applying incremental map %u len %d\n",
2152 newmap
= osdmap_apply_incremental(&p
, next
,
2154 &osdc
->client
->msgr
);
2155 if (IS_ERR(newmap
)) {
2156 err
= PTR_ERR(newmap
);
2160 if (newmap
!= osdc
->osdmap
) {
2161 ceph_osdmap_destroy(osdc
->osdmap
);
2162 osdc
->osdmap
= newmap
;
2164 was_full
= was_full
||
2165 ceph_osdmap_flag(osdc
->osdmap
,
2167 kick_requests(osdc
, 0, was_full
);
2169 dout("ignoring incremental map %u len %d\n",
2179 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2180 dout(" %d full maps\n", nr_maps
);
2182 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2183 epoch
= ceph_decode_32(&p
);
2184 maplen
= ceph_decode_32(&p
);
2185 ceph_decode_need(&p
, end
, maplen
, bad
);
2187 dout("skipping non-latest full map %u len %d\n",
2189 } else if (osdc
->osdmap
&& osdc
->osdmap
->epoch
>= epoch
) {
2190 dout("skipping full map %u len %d, "
2191 "older than our %u\n", epoch
, maplen
,
2192 osdc
->osdmap
->epoch
);
2194 int skipped_map
= 0;
2196 dout("taking full map %u len %d\n", epoch
, maplen
);
2197 newmap
= ceph_osdmap_decode(&p
, p
+maplen
);
2198 if (IS_ERR(newmap
)) {
2199 err
= PTR_ERR(newmap
);
2203 oldmap
= osdc
->osdmap
;
2204 osdc
->osdmap
= newmap
;
2206 if (oldmap
->epoch
+ 1 < newmap
->epoch
)
2208 ceph_osdmap_destroy(oldmap
);
2210 was_full
= was_full
||
2211 ceph_osdmap_flag(osdc
->osdmap
,
2213 kick_requests(osdc
, skipped_map
, was_full
);
2222 downgrade_write(&osdc
->map_sem
);
2223 ceph_monc_got_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
2224 osdc
->osdmap
->epoch
);
2227 * subscribe to subsequent osdmap updates if full to ensure
2228 * we find out when we are no longer full and stop returning
2231 if (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
2232 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
) ||
2233 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
))
2234 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2236 mutex_lock(&osdc
->request_mutex
);
2237 __send_queued(osdc
);
2238 mutex_unlock(&osdc
->request_mutex
);
2239 up_read(&osdc
->map_sem
);
2240 wake_up_all(&osdc
->client
->auth_wq
);
2244 pr_err("osdc handle_map corrupt msg\n");
2246 up_write(&osdc
->map_sem
);
2250 * watch/notify callback event infrastructure
2252 * These callbacks are used both for watch and notify operations.
2254 static void __release_event(struct kref
*kref
)
2256 struct ceph_osd_event
*event
=
2257 container_of(kref
, struct ceph_osd_event
, kref
);
2259 dout("__release_event %p\n", event
);
2263 static void get_event(struct ceph_osd_event
*event
)
2265 kref_get(&event
->kref
);
2268 void ceph_osdc_put_event(struct ceph_osd_event
*event
)
2270 kref_put(&event
->kref
, __release_event
);
2272 EXPORT_SYMBOL(ceph_osdc_put_event
);
2274 static void __insert_event(struct ceph_osd_client
*osdc
,
2275 struct ceph_osd_event
*new)
2277 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2278 struct rb_node
*parent
= NULL
;
2279 struct ceph_osd_event
*event
= NULL
;
2283 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2284 if (new->cookie
< event
->cookie
)
2286 else if (new->cookie
> event
->cookie
)
2287 p
= &(*p
)->rb_right
;
2292 rb_link_node(&new->node
, parent
, p
);
2293 rb_insert_color(&new->node
, &osdc
->event_tree
);
2296 static struct ceph_osd_event
*__find_event(struct ceph_osd_client
*osdc
,
2299 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2300 struct rb_node
*parent
= NULL
;
2301 struct ceph_osd_event
*event
= NULL
;
2305 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2306 if (cookie
< event
->cookie
)
2308 else if (cookie
> event
->cookie
)
2309 p
= &(*p
)->rb_right
;
2316 static void __remove_event(struct ceph_osd_event
*event
)
2318 struct ceph_osd_client
*osdc
= event
->osdc
;
2320 if (!RB_EMPTY_NODE(&event
->node
)) {
2321 dout("__remove_event removed %p\n", event
);
2322 rb_erase(&event
->node
, &osdc
->event_tree
);
2323 ceph_osdc_put_event(event
);
2325 dout("__remove_event didn't remove %p\n", event
);
2329 int ceph_osdc_create_event(struct ceph_osd_client
*osdc
,
2330 void (*event_cb
)(u64
, u64
, u8
, void *),
2331 void *data
, struct ceph_osd_event
**pevent
)
2333 struct ceph_osd_event
*event
;
2335 event
= kmalloc(sizeof(*event
), GFP_NOIO
);
2339 dout("create_event %p\n", event
);
2340 event
->cb
= event_cb
;
2341 event
->one_shot
= 0;
2344 INIT_LIST_HEAD(&event
->osd_node
);
2345 RB_CLEAR_NODE(&event
->node
);
2346 kref_init(&event
->kref
); /* one ref for us */
2347 kref_get(&event
->kref
); /* one ref for the caller */
2349 spin_lock(&osdc
->event_lock
);
2350 event
->cookie
= ++osdc
->event_count
;
2351 __insert_event(osdc
, event
);
2352 spin_unlock(&osdc
->event_lock
);
2357 EXPORT_SYMBOL(ceph_osdc_create_event
);
2359 void ceph_osdc_cancel_event(struct ceph_osd_event
*event
)
2361 struct ceph_osd_client
*osdc
= event
->osdc
;
2363 dout("cancel_event %p\n", event
);
2364 spin_lock(&osdc
->event_lock
);
2365 __remove_event(event
);
2366 spin_unlock(&osdc
->event_lock
);
2367 ceph_osdc_put_event(event
); /* caller's */
2369 EXPORT_SYMBOL(ceph_osdc_cancel_event
);
2372 static void do_event_work(struct work_struct
*work
)
2374 struct ceph_osd_event_work
*event_work
=
2375 container_of(work
, struct ceph_osd_event_work
, work
);
2376 struct ceph_osd_event
*event
= event_work
->event
;
2377 u64 ver
= event_work
->ver
;
2378 u64 notify_id
= event_work
->notify_id
;
2379 u8 opcode
= event_work
->opcode
;
2381 dout("do_event_work completing %p\n", event
);
2382 event
->cb(ver
, notify_id
, opcode
, event
->data
);
2383 dout("do_event_work completed %p\n", event
);
2384 ceph_osdc_put_event(event
);
2390 * Process osd watch notifications
2392 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
2393 struct ceph_msg
*msg
)
2397 u64 cookie
, ver
, notify_id
;
2399 struct ceph_osd_event
*event
;
2400 struct ceph_osd_event_work
*event_work
;
2402 p
= msg
->front
.iov_base
;
2403 end
= p
+ msg
->front
.iov_len
;
2405 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
2406 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
2407 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
2408 ceph_decode_64_safe(&p
, end
, ver
, bad
);
2409 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
2411 spin_lock(&osdc
->event_lock
);
2412 event
= __find_event(osdc
, cookie
);
2414 BUG_ON(event
->one_shot
);
2417 spin_unlock(&osdc
->event_lock
);
2418 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
2419 cookie
, ver
, event
);
2421 event_work
= kmalloc(sizeof(*event_work
), GFP_NOIO
);
2423 pr_err("couldn't allocate event_work\n");
2424 ceph_osdc_put_event(event
);
2427 INIT_WORK(&event_work
->work
, do_event_work
);
2428 event_work
->event
= event
;
2429 event_work
->ver
= ver
;
2430 event_work
->notify_id
= notify_id
;
2431 event_work
->opcode
= opcode
;
2433 queue_work(osdc
->notify_wq
, &event_work
->work
);
2439 pr_err("osdc handle_watch_notify corrupt msg\n");
2443 * build new request AND message
2446 void ceph_osdc_build_request(struct ceph_osd_request
*req
, u64 off
,
2447 struct ceph_snap_context
*snapc
, u64 snap_id
,
2448 struct timespec
*mtime
)
2450 struct ceph_msg
*msg
= req
->r_request
;
2453 int flags
= req
->r_flags
;
2457 req
->r_snapid
= snap_id
;
2458 req
->r_snapc
= ceph_get_snap_context(snapc
);
2460 /* encode request */
2461 msg
->hdr
.version
= cpu_to_le16(4);
2463 p
= msg
->front
.iov_base
;
2464 ceph_encode_32(&p
, 1); /* client_inc is always 1 */
2465 req
->r_request_osdmap_epoch
= p
;
2467 req
->r_request_flags
= p
;
2469 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
2470 ceph_encode_timespec(p
, mtime
);
2471 p
+= sizeof(struct ceph_timespec
);
2472 req
->r_request_reassert_version
= p
;
2473 p
+= sizeof(struct ceph_eversion
); /* will get filled in */
2476 ceph_encode_8(&p
, 4);
2477 ceph_encode_8(&p
, 4);
2478 ceph_encode_32(&p
, 8 + 4 + 4);
2479 req
->r_request_pool
= p
;
2481 ceph_encode_32(&p
, -1); /* preferred */
2482 ceph_encode_32(&p
, 0); /* key len */
2484 ceph_encode_8(&p
, 1);
2485 req
->r_request_pgid
= p
;
2487 ceph_encode_32(&p
, -1); /* preferred */
2490 ceph_encode_32(&p
, req
->r_base_oid
.name_len
);
2491 memcpy(p
, req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2492 dout("oid '%.*s' len %d\n", req
->r_base_oid
.name_len
,
2493 req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2494 p
+= req
->r_base_oid
.name_len
;
2496 /* ops--can imply data */
2497 ceph_encode_16(&p
, (u16
)req
->r_num_ops
);
2499 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2500 data_len
+= osd_req_encode_op(req
, p
, i
);
2501 p
+= sizeof(struct ceph_osd_op
);
2505 ceph_encode_64(&p
, req
->r_snapid
);
2506 ceph_encode_64(&p
, req
->r_snapc
? req
->r_snapc
->seq
: 0);
2507 ceph_encode_32(&p
, req
->r_snapc
? req
->r_snapc
->num_snaps
: 0);
2509 for (i
= 0; i
< snapc
->num_snaps
; i
++) {
2510 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
2514 req
->r_request_attempts
= p
;
2518 if (flags
& CEPH_OSD_FLAG_WRITE
) {
2522 * The header "data_off" is a hint to the receiver
2523 * allowing it to align received data into its
2524 * buffers such that there's no need to re-copy
2525 * it before writing it to disk (direct I/O).
2527 data_off
= (u16
) (off
& 0xffff);
2528 req
->r_request
->hdr
.data_off
= cpu_to_le16(data_off
);
2530 req
->r_request
->hdr
.data_len
= cpu_to_le32(data_len
);
2532 BUG_ON(p
> msg
->front
.iov_base
+ msg
->front
.iov_len
);
2533 msg_size
= p
- msg
->front
.iov_base
;
2534 msg
->front
.iov_len
= msg_size
;
2535 msg
->hdr
.front_len
= cpu_to_le32(msg_size
);
2537 dout("build_request msg_size was %d\n", (int)msg_size
);
2539 EXPORT_SYMBOL(ceph_osdc_build_request
);
2542 * Register request, send initial attempt.
2544 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
2545 struct ceph_osd_request
*req
,
2550 down_read(&osdc
->map_sem
);
2551 mutex_lock(&osdc
->request_mutex
);
2553 rc
= __ceph_osdc_start_request(osdc
, req
, nofail
);
2555 mutex_unlock(&osdc
->request_mutex
);
2556 up_read(&osdc
->map_sem
);
2560 EXPORT_SYMBOL(ceph_osdc_start_request
);
2563 * Unregister a registered request. The request is not completed (i.e.
2564 * no callbacks or wakeups) - higher layers are supposed to know what
2565 * they are canceling.
2567 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
2569 struct ceph_osd_client
*osdc
= req
->r_osdc
;
2571 mutex_lock(&osdc
->request_mutex
);
2573 __unregister_linger_request(osdc
, req
);
2574 __unregister_request(osdc
, req
);
2575 mutex_unlock(&osdc
->request_mutex
);
2577 dout("%s %p tid %llu canceled\n", __func__
, req
, req
->r_tid
);
2579 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
2582 * wait for a request to complete
2584 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
2585 struct ceph_osd_request
*req
)
2589 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
2591 rc
= wait_for_completion_interruptible(&req
->r_completion
);
2593 dout("%s %p tid %llu interrupted\n", __func__
, req
, req
->r_tid
);
2594 ceph_osdc_cancel_request(req
);
2595 complete_request(req
);
2599 dout("%s %p tid %llu result %d\n", __func__
, req
, req
->r_tid
,
2601 return req
->r_result
;
2603 EXPORT_SYMBOL(ceph_osdc_wait_request
);
2606 * sync - wait for all in-flight requests to flush. avoid starvation.
2608 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
2610 struct ceph_osd_request
*req
;
2611 u64 last_tid
, next_tid
= 0;
2613 mutex_lock(&osdc
->request_mutex
);
2614 last_tid
= osdc
->last_tid
;
2616 req
= __lookup_request_ge(osdc
, next_tid
);
2619 if (req
->r_tid
> last_tid
)
2622 next_tid
= req
->r_tid
+ 1;
2623 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) == 0)
2626 ceph_osdc_get_request(req
);
2627 mutex_unlock(&osdc
->request_mutex
);
2628 dout("sync waiting on tid %llu (last is %llu)\n",
2629 req
->r_tid
, last_tid
);
2630 wait_for_completion(&req
->r_safe_completion
);
2631 mutex_lock(&osdc
->request_mutex
);
2632 ceph_osdc_put_request(req
);
2634 mutex_unlock(&osdc
->request_mutex
);
2635 dout("sync done (thru tid %llu)\n", last_tid
);
2637 EXPORT_SYMBOL(ceph_osdc_sync
);
2640 * Call all pending notify callbacks - for use after a watch is
2641 * unregistered, to make sure no more callbacks for it will be invoked
2643 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
2645 flush_workqueue(osdc
->notify_wq
);
2647 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
2653 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
2658 osdc
->client
= client
;
2659 osdc
->osdmap
= NULL
;
2660 init_rwsem(&osdc
->map_sem
);
2661 init_completion(&osdc
->map_waiters
);
2662 osdc
->last_requested_map
= 0;
2663 mutex_init(&osdc
->request_mutex
);
2665 osdc
->osds
= RB_ROOT
;
2666 INIT_LIST_HEAD(&osdc
->osd_lru
);
2667 osdc
->requests
= RB_ROOT
;
2668 INIT_LIST_HEAD(&osdc
->req_lru
);
2669 INIT_LIST_HEAD(&osdc
->req_unsent
);
2670 INIT_LIST_HEAD(&osdc
->req_notarget
);
2671 INIT_LIST_HEAD(&osdc
->req_linger
);
2672 osdc
->num_requests
= 0;
2673 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
2674 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
2675 spin_lock_init(&osdc
->event_lock
);
2676 osdc
->event_tree
= RB_ROOT
;
2677 osdc
->event_count
= 0;
2679 schedule_delayed_work(&osdc
->osds_timeout_work
,
2680 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
));
2683 osdc
->req_mempool
= mempool_create_slab_pool(10,
2684 ceph_osd_request_cache
);
2685 if (!osdc
->req_mempool
)
2688 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
2689 OSD_OP_FRONT_LEN
, 10, true,
2693 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
2694 OSD_OPREPLY_FRONT_LEN
, 10, true,
2700 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
2701 if (!osdc
->notify_wq
)
2702 goto out_msgpool_reply
;
2707 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2709 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2711 mempool_destroy(osdc
->req_mempool
);
2716 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
2718 flush_workqueue(osdc
->notify_wq
);
2719 destroy_workqueue(osdc
->notify_wq
);
2720 cancel_delayed_work_sync(&osdc
->timeout_work
);
2721 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
2723 ceph_osdmap_destroy(osdc
->osdmap
);
2724 osdc
->osdmap
= NULL
;
2726 remove_all_osds(osdc
);
2727 mempool_destroy(osdc
->req_mempool
);
2728 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2729 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2733 * Read some contiguous pages. If we cross a stripe boundary, shorten
2734 * *plen. Return number of bytes read, or error.
2736 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
2737 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
2739 u32 truncate_seq
, u64 truncate_size
,
2740 struct page
**pages
, int num_pages
, int page_align
)
2742 struct ceph_osd_request
*req
;
2745 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
2746 vino
.snap
, off
, *plen
);
2747 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 0, 1,
2748 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
2749 NULL
, truncate_seq
, truncate_size
,
2752 return PTR_ERR(req
);
2754 /* it may be a short read due to an object boundary */
2756 osd_req_op_extent_osd_data_pages(req
, 0,
2757 pages
, *plen
, page_align
, false, false);
2759 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
2760 off
, *plen
, *plen
, page_align
);
2762 ceph_osdc_build_request(req
, off
, NULL
, vino
.snap
, NULL
);
2764 rc
= ceph_osdc_start_request(osdc
, req
, false);
2766 rc
= ceph_osdc_wait_request(osdc
, req
);
2768 ceph_osdc_put_request(req
);
2769 dout("readpages result %d\n", rc
);
2772 EXPORT_SYMBOL(ceph_osdc_readpages
);
2775 * do a synchronous write on N pages
2777 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
2778 struct ceph_file_layout
*layout
,
2779 struct ceph_snap_context
*snapc
,
2781 u32 truncate_seq
, u64 truncate_size
,
2782 struct timespec
*mtime
,
2783 struct page
**pages
, int num_pages
)
2785 struct ceph_osd_request
*req
;
2787 int page_align
= off
& ~PAGE_MASK
;
2789 BUG_ON(vino
.snap
!= CEPH_NOSNAP
); /* snapshots aren't writeable */
2790 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 0, 1,
2792 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
2793 snapc
, truncate_seq
, truncate_size
,
2796 return PTR_ERR(req
);
2798 /* it may be a short write due to an object boundary */
2799 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
2801 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
2803 ceph_osdc_build_request(req
, off
, snapc
, CEPH_NOSNAP
, mtime
);
2805 rc
= ceph_osdc_start_request(osdc
, req
, true);
2807 rc
= ceph_osdc_wait_request(osdc
, req
);
2809 ceph_osdc_put_request(req
);
2812 dout("writepages result %d\n", rc
);
2815 EXPORT_SYMBOL(ceph_osdc_writepages
);
2817 int ceph_osdc_setup(void)
2819 size_t size
= sizeof(struct ceph_osd_request
) +
2820 CEPH_OSD_SLAB_OPS
* sizeof(struct ceph_osd_req_op
);
2822 BUG_ON(ceph_osd_request_cache
);
2823 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request", size
,
2826 return ceph_osd_request_cache
? 0 : -ENOMEM
;
2828 EXPORT_SYMBOL(ceph_osdc_setup
);
2830 void ceph_osdc_cleanup(void)
2832 BUG_ON(!ceph_osd_request_cache
);
2833 kmem_cache_destroy(ceph_osd_request_cache
);
2834 ceph_osd_request_cache
= NULL
;
2836 EXPORT_SYMBOL(ceph_osdc_cleanup
);
2839 * handle incoming message
2841 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
2843 struct ceph_osd
*osd
= con
->private;
2844 struct ceph_osd_client
*osdc
;
2845 int type
= le16_to_cpu(msg
->hdr
.type
);
2852 case CEPH_MSG_OSD_MAP
:
2853 ceph_osdc_handle_map(osdc
, msg
);
2855 case CEPH_MSG_OSD_OPREPLY
:
2856 handle_reply(osdc
, msg
);
2858 case CEPH_MSG_WATCH_NOTIFY
:
2859 handle_watch_notify(osdc
, msg
);
2863 pr_err("received unknown message type %d %s\n", type
,
2864 ceph_msg_type_name(type
));
2871 * Lookup and return message for incoming reply. Don't try to do
2872 * anything about a larger than preallocated data portion of the
2873 * message at the moment - for now, just skip the message.
2875 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
2876 struct ceph_msg_header
*hdr
,
2879 struct ceph_osd
*osd
= con
->private;
2880 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2882 struct ceph_osd_request
*req
;
2883 int front_len
= le32_to_cpu(hdr
->front_len
);
2884 int data_len
= le32_to_cpu(hdr
->data_len
);
2887 tid
= le64_to_cpu(hdr
->tid
);
2888 mutex_lock(&osdc
->request_mutex
);
2889 req
= __lookup_request(osdc
, tid
);
2891 dout("%s osd%d tid %llu unknown, skipping\n", __func__
,
2898 ceph_msg_revoke_incoming(req
->r_reply
);
2900 if (front_len
> req
->r_reply
->front_alloc_len
) {
2901 pr_warn("%s osd%d tid %llu front %d > preallocated %d\n",
2902 __func__
, osd
->o_osd
, req
->r_tid
, front_len
,
2903 req
->r_reply
->front_alloc_len
);
2904 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
2908 ceph_msg_put(req
->r_reply
);
2912 if (data_len
> req
->r_reply
->data_length
) {
2913 pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n",
2914 __func__
, osd
->o_osd
, req
->r_tid
, data_len
,
2915 req
->r_reply
->data_length
);
2921 m
= ceph_msg_get(req
->r_reply
);
2922 dout("get_reply tid %lld %p\n", tid
, m
);
2925 mutex_unlock(&osdc
->request_mutex
);
2929 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
2930 struct ceph_msg_header
*hdr
,
2933 struct ceph_osd
*osd
= con
->private;
2934 int type
= le16_to_cpu(hdr
->type
);
2935 int front
= le32_to_cpu(hdr
->front_len
);
2939 case CEPH_MSG_OSD_MAP
:
2940 case CEPH_MSG_WATCH_NOTIFY
:
2941 return ceph_msg_new(type
, front
, GFP_NOFS
, false);
2942 case CEPH_MSG_OSD_OPREPLY
:
2943 return get_reply(con
, hdr
, skip
);
2945 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type
,
2953 * Wrappers to refcount containing ceph_osd struct
2955 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
2957 struct ceph_osd
*osd
= con
->private;
2963 static void put_osd_con(struct ceph_connection
*con
)
2965 struct ceph_osd
*osd
= con
->private;
2973 * Note: returned pointer is the address of a structure that's
2974 * managed separately. Caller must *not* attempt to free it.
2976 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
2977 int *proto
, int force_new
)
2979 struct ceph_osd
*o
= con
->private;
2980 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2981 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2982 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
2984 if (force_new
&& auth
->authorizer
) {
2985 ceph_auth_destroy_authorizer(auth
->authorizer
);
2986 auth
->authorizer
= NULL
;
2988 if (!auth
->authorizer
) {
2989 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2992 return ERR_PTR(ret
);
2994 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2997 return ERR_PTR(ret
);
2999 *proto
= ac
->protocol
;
3005 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
3007 struct ceph_osd
*o
= con
->private;
3008 struct ceph_osd_client
*osdc
= o
->o_osdc
;
3009 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
3011 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
3014 static int invalidate_authorizer(struct ceph_connection
*con
)
3016 struct ceph_osd
*o
= con
->private;
3017 struct ceph_osd_client
*osdc
= o
->o_osdc
;
3018 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
3020 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
3021 return ceph_monc_validate_auth(&osdc
->client
->monc
);
3024 static int osd_sign_message(struct ceph_msg
*msg
)
3026 struct ceph_osd
*o
= msg
->con
->private;
3027 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
3029 return ceph_auth_sign_message(auth
, msg
);
3032 static int osd_check_message_signature(struct ceph_msg
*msg
)
3034 struct ceph_osd
*o
= msg
->con
->private;
3035 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
3037 return ceph_auth_check_message_signature(auth
, msg
);
3040 static const struct ceph_connection_operations osd_con_ops
= {
3043 .dispatch
= dispatch
,
3044 .get_authorizer
= get_authorizer
,
3045 .verify_authorizer_reply
= verify_authorizer_reply
,
3046 .invalidate_authorizer
= invalidate_authorizer
,
3047 .alloc_msg
= alloc_msg
,
3048 .sign_message
= osd_sign_message
,
3049 .check_message_signature
= osd_check_message_signature
,