2 * pNFS Objects layout driver high level definitions
4 * Copyright (C) 2007 Panasas Inc. [year of first publication]
7 * Benny Halevy <bhalevy@panasas.com>
8 * Boaz Harrosh <bharrosh@panasas.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * See the file COPYING included with this distribution for more details.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. Neither the name of the Panasas company nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
28 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
30 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
34 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 #include <linux/kmod.h>
41 #include <linux/moduleparam.h>
42 #include <linux/ratelimit.h>
43 #include <scsi/osd_initiator.h>
44 #include "objlayout.h"
46 #define NFSDBG_FACILITY NFSDBG_PNFS_LD
48 * Create a objlayout layout structure for the given inode and return it.
50 struct pnfs_layout_hdr
*
51 objlayout_alloc_layout_hdr(struct inode
*inode
, gfp_t gfp_flags
)
53 struct objlayout
*objlay
;
55 objlay
= kzalloc(sizeof(struct objlayout
), gfp_flags
);
57 spin_lock_init(&objlay
->lock
);
58 INIT_LIST_HEAD(&objlay
->err_list
);
60 dprintk("%s: Return %p\n", __func__
, objlay
);
61 return &objlay
->pnfs_layout
;
65 * Free an objlayout layout structure
68 objlayout_free_layout_hdr(struct pnfs_layout_hdr
*lo
)
70 struct objlayout
*objlay
= OBJLAYOUT(lo
);
72 dprintk("%s: objlay %p\n", __func__
, objlay
);
74 WARN_ON(!list_empty(&objlay
->err_list
));
79 * Unmarshall layout and store it in pnfslay.
81 struct pnfs_layout_segment
*
82 objlayout_alloc_lseg(struct pnfs_layout_hdr
*pnfslay
,
83 struct nfs4_layoutget_res
*lgr
,
87 struct xdr_stream stream
;
88 struct xdr_buf buf
= {
89 .pages
= lgr
->layoutp
->pages
,
90 .page_len
= lgr
->layoutp
->len
,
91 .buflen
= lgr
->layoutp
->len
,
92 .len
= lgr
->layoutp
->len
,
95 struct pnfs_layout_segment
*lseg
;
97 dprintk("%s: Begin pnfslay %p\n", __func__
, pnfslay
);
99 scratch
= alloc_page(gfp_flags
);
103 xdr_init_decode(&stream
, &buf
, NULL
);
104 xdr_set_scratch_buffer(&stream
, page_address(scratch
), PAGE_SIZE
);
106 status
= objio_alloc_lseg(&lseg
, pnfslay
, &lgr
->range
, &stream
, gfp_flags
);
107 if (unlikely(status
)) {
108 dprintk("%s: objio_alloc_lseg Return err %d\n", __func__
,
113 __free_page(scratch
);
115 dprintk("%s: Return %p\n", __func__
, lseg
);
119 __free_page(scratch
);
121 dprintk("%s: Err Return=>%d\n", __func__
, status
);
122 return ERR_PTR(status
);
126 * Free a layout segement
129 objlayout_free_lseg(struct pnfs_layout_segment
*lseg
)
131 dprintk("%s: freeing layout segment %p\n", __func__
, lseg
);
136 objio_free_lseg(lseg
);
143 end_offset(u64 start
, u64 len
)
148 return end
>= start
? end
: NFS4_MAX_UINT64
;
151 /* last octet in a range */
153 last_byte_offset(u64 start
, u64 len
)
159 return end
> start
? end
- 1 : NFS4_MAX_UINT64
;
162 static void _fix_verify_io_params(struct pnfs_layout_segment
*lseg
,
163 struct page
***p_pages
, unsigned *p_pgbase
,
164 u64 offset
, unsigned long count
)
168 BUG_ON(offset
< lseg
->pls_range
.offset
);
169 lseg_end_offset
= end_offset(lseg
->pls_range
.offset
,
170 lseg
->pls_range
.length
);
171 BUG_ON(offset
>= lseg_end_offset
);
172 WARN_ON(offset
+ count
> lseg_end_offset
);
174 if (*p_pgbase
> PAGE_SIZE
) {
175 dprintk("%s: pgbase(0x%x) > PAGE_SIZE\n", __func__
, *p_pgbase
);
176 *p_pages
+= *p_pgbase
>> PAGE_SHIFT
;
177 *p_pgbase
&= ~PAGE_MASK
;
182 * I/O done common code
185 objlayout_iodone(struct objlayout_io_res
*oir
)
187 if (likely(oir
->status
>= 0)) {
188 objio_free_result(oir
);
190 struct objlayout
*objlay
= oir
->objlay
;
192 spin_lock(&objlay
->lock
);
193 objlay
->delta_space_valid
= OBJ_DSU_INVALID
;
194 list_add(&objlay
->err_list
, &oir
->err_list
);
195 spin_unlock(&objlay
->lock
);
200 * objlayout_io_set_result - Set an osd_error code on a specific osd comp.
202 * The @index component IO failed (error returned from target). Register
203 * the error for later reporting at layout-return.
206 objlayout_io_set_result(struct objlayout_io_res
*oir
, unsigned index
,
207 struct pnfs_osd_objid
*pooid
, int osd_error
,
208 u64 offset
, u64 length
, bool is_write
)
210 struct pnfs_osd_ioerr
*ioerr
= &oir
->ioerrs
[index
];
212 BUG_ON(index
>= oir
->num_comps
);
214 ioerr
->oer_component
= *pooid
;
215 ioerr
->oer_comp_offset
= offset
;
216 ioerr
->oer_comp_length
= length
;
217 ioerr
->oer_iswrite
= is_write
;
218 ioerr
->oer_errno
= osd_error
;
220 dprintk("%s: err[%d]: errno=%d is_write=%d dev(%llx:%llx) "
221 "par=0x%llx obj=0x%llx offset=0x%llx length=0x%llx\n",
222 __func__
, index
, ioerr
->oer_errno
,
224 _DEVID_LO(&ioerr
->oer_component
.oid_device_id
),
225 _DEVID_HI(&ioerr
->oer_component
.oid_device_id
),
226 ioerr
->oer_component
.oid_partition_id
,
227 ioerr
->oer_component
.oid_object_id
,
228 ioerr
->oer_comp_offset
,
229 ioerr
->oer_comp_length
);
231 /* User need not call if no error is reported */
232 ioerr
->oer_errno
= 0;
236 /* Function scheduled on rpc workqueue to call ->nfs_readlist_complete().
237 * This is because the osd completion is called with ints-off from
240 static void _rpc_read_complete(struct work_struct
*work
)
242 struct rpc_task
*task
;
243 struct nfs_read_data
*rdata
;
245 dprintk("%s enter\n", __func__
);
246 task
= container_of(work
, struct rpc_task
, u
.tk_work
);
247 rdata
= container_of(task
, struct nfs_read_data
, task
);
249 pnfs_ld_read_done(rdata
);
253 objlayout_read_done(struct objlayout_io_res
*oir
, ssize_t status
, bool sync
)
255 struct nfs_read_data
*rdata
= oir
->rpcdata
;
257 oir
->status
= rdata
->task
.tk_status
= status
;
259 rdata
->res
.count
= status
;
261 rdata
->pnfs_error
= status
;
262 objlayout_iodone(oir
);
263 /* must not use oir after this point */
265 dprintk("%s: Return status=%zd eof=%d sync=%d\n", __func__
,
266 status
, rdata
->res
.eof
, sync
);
269 pnfs_ld_read_done(rdata
);
271 INIT_WORK(&rdata
->task
.u
.tk_work
, _rpc_read_complete
);
272 schedule_work(&rdata
->task
.u
.tk_work
);
277 * Perform sync or async reads.
280 objlayout_read_pagelist(struct nfs_read_data
*rdata
)
282 loff_t offset
= rdata
->args
.offset
;
283 size_t count
= rdata
->args
.count
;
287 eof
= i_size_read(rdata
->inode
);
288 if (unlikely(offset
+ count
> eof
)) {
291 rdata
->res
.count
= 0;
293 /*FIXME: do we need to call pnfs_ld_read_done() */
296 count
= eof
- offset
;
299 rdata
->res
.eof
= (offset
+ count
) >= eof
;
300 _fix_verify_io_params(rdata
->lseg
, &rdata
->args
.pages
,
302 rdata
->args
.offset
, rdata
->args
.count
);
304 dprintk("%s: inode(%lx) offset 0x%llx count 0x%Zx eof=%d\n",
305 __func__
, rdata
->inode
->i_ino
, offset
, count
, rdata
->res
.eof
);
307 err
= objio_read_pagelist(rdata
);
310 rdata
->pnfs_error
= err
;
311 dprintk("%s: Returned Error %d\n", __func__
, err
);
312 return PNFS_NOT_ATTEMPTED
;
314 return PNFS_ATTEMPTED
;
317 /* Function scheduled on rpc workqueue to call ->nfs_writelist_complete().
318 * This is because the osd completion is called with ints-off from
321 static void _rpc_write_complete(struct work_struct
*work
)
323 struct rpc_task
*task
;
324 struct nfs_write_data
*wdata
;
326 dprintk("%s enter\n", __func__
);
327 task
= container_of(work
, struct rpc_task
, u
.tk_work
);
328 wdata
= container_of(task
, struct nfs_write_data
, task
);
330 pnfs_ld_write_done(wdata
);
334 objlayout_write_done(struct objlayout_io_res
*oir
, ssize_t status
, bool sync
)
336 struct nfs_write_data
*wdata
= oir
->rpcdata
;
338 oir
->status
= wdata
->task
.tk_status
= status
;
340 wdata
->res
.count
= status
;
341 wdata
->verf
.committed
= oir
->committed
;
343 wdata
->pnfs_error
= status
;
345 objlayout_iodone(oir
);
346 /* must not use oir after this point */
348 dprintk("%s: Return status %zd committed %d sync=%d\n", __func__
,
349 status
, wdata
->verf
.committed
, sync
);
352 pnfs_ld_write_done(wdata
);
354 INIT_WORK(&wdata
->task
.u
.tk_work
, _rpc_write_complete
);
355 schedule_work(&wdata
->task
.u
.tk_work
);
360 * Perform sync or async writes.
363 objlayout_write_pagelist(struct nfs_write_data
*wdata
,
368 _fix_verify_io_params(wdata
->lseg
, &wdata
->args
.pages
,
370 wdata
->args
.offset
, wdata
->args
.count
);
372 err
= objio_write_pagelist(wdata
, how
);
374 wdata
->pnfs_error
= err
;
375 dprintk("%s: Returned Error %d\n", __func__
, err
);
376 return PNFS_NOT_ATTEMPTED
;
378 return PNFS_ATTEMPTED
;
382 objlayout_encode_layoutcommit(struct pnfs_layout_hdr
*pnfslay
,
383 struct xdr_stream
*xdr
,
384 const struct nfs4_layoutcommit_args
*args
)
386 struct objlayout
*objlay
= OBJLAYOUT(pnfslay
);
387 struct pnfs_osd_layoutupdate lou
;
390 dprintk("%s: Begin\n", __func__
);
392 spin_lock(&objlay
->lock
);
393 lou
.dsu_valid
= (objlay
->delta_space_valid
== OBJ_DSU_VALID
);
394 lou
.dsu_delta
= objlay
->delta_space_used
;
395 objlay
->delta_space_used
= 0;
396 objlay
->delta_space_valid
= OBJ_DSU_INIT
;
397 lou
.olu_ioerr_flag
= !list_empty(&objlay
->err_list
);
398 spin_unlock(&objlay
->lock
);
400 start
= xdr_reserve_space(xdr
, 4);
402 BUG_ON(pnfs_osd_xdr_encode_layoutupdate(xdr
, &lou
));
404 *start
= cpu_to_be32((xdr
->p
- start
- 1) * 4);
406 dprintk("%s: Return delta_space_used %lld err %d\n", __func__
,
407 lou
.dsu_delta
, lou
.olu_ioerr_flag
);
411 err_prio(u32 oer_errno
)
417 case PNFS_OSD_ERR_RESOURCE
:
418 return OSD_ERR_PRI_RESOURCE
;
419 case PNFS_OSD_ERR_BAD_CRED
:
420 return OSD_ERR_PRI_BAD_CRED
;
421 case PNFS_OSD_ERR_NO_ACCESS
:
422 return OSD_ERR_PRI_NO_ACCESS
;
423 case PNFS_OSD_ERR_UNREACHABLE
:
424 return OSD_ERR_PRI_UNREACHABLE
;
425 case PNFS_OSD_ERR_NOT_FOUND
:
426 return OSD_ERR_PRI_NOT_FOUND
;
427 case PNFS_OSD_ERR_NO_SPACE
:
428 return OSD_ERR_PRI_NO_SPACE
;
432 case PNFS_OSD_ERR_EIO
:
433 return OSD_ERR_PRI_EIO
;
438 merge_ioerr(struct pnfs_osd_ioerr
*dest_err
,
439 const struct pnfs_osd_ioerr
*src_err
)
441 u64 dest_end
, src_end
;
443 if (!dest_err
->oer_errno
) {
444 *dest_err
= *src_err
;
445 /* accumulated device must be blank */
446 memset(&dest_err
->oer_component
.oid_device_id
, 0,
447 sizeof(dest_err
->oer_component
.oid_device_id
));
452 if (dest_err
->oer_component
.oid_partition_id
!=
453 src_err
->oer_component
.oid_partition_id
)
454 dest_err
->oer_component
.oid_partition_id
= 0;
456 if (dest_err
->oer_component
.oid_object_id
!=
457 src_err
->oer_component
.oid_object_id
)
458 dest_err
->oer_component
.oid_object_id
= 0;
460 if (dest_err
->oer_comp_offset
> src_err
->oer_comp_offset
)
461 dest_err
->oer_comp_offset
= src_err
->oer_comp_offset
;
463 dest_end
= end_offset(dest_err
->oer_comp_offset
,
464 dest_err
->oer_comp_length
);
465 src_end
= end_offset(src_err
->oer_comp_offset
,
466 src_err
->oer_comp_length
);
467 if (dest_end
< src_end
)
470 dest_err
->oer_comp_length
= dest_end
- dest_err
->oer_comp_offset
;
472 if ((src_err
->oer_iswrite
== dest_err
->oer_iswrite
) &&
473 (err_prio(src_err
->oer_errno
) > err_prio(dest_err
->oer_errno
))) {
474 dest_err
->oer_errno
= src_err
->oer_errno
;
475 } else if (src_err
->oer_iswrite
) {
476 dest_err
->oer_iswrite
= true;
477 dest_err
->oer_errno
= src_err
->oer_errno
;
482 encode_accumulated_error(struct objlayout
*objlay
, __be32
*p
)
484 struct objlayout_io_res
*oir
, *tmp
;
485 struct pnfs_osd_ioerr accumulated_err
= {.oer_errno
= 0};
487 list_for_each_entry_safe(oir
, tmp
, &objlay
->err_list
, err_list
) {
490 for (i
= 0; i
< oir
->num_comps
; i
++) {
491 struct pnfs_osd_ioerr
*ioerr
= &oir
->ioerrs
[i
];
493 if (!ioerr
->oer_errno
)
496 printk(KERN_ERR
"NFS: %s: err[%d]: errno=%d "
497 "is_write=%d dev(%llx:%llx) par=0x%llx "
498 "obj=0x%llx offset=0x%llx length=0x%llx\n",
499 __func__
, i
, ioerr
->oer_errno
,
501 _DEVID_LO(&ioerr
->oer_component
.oid_device_id
),
502 _DEVID_HI(&ioerr
->oer_component
.oid_device_id
),
503 ioerr
->oer_component
.oid_partition_id
,
504 ioerr
->oer_component
.oid_object_id
,
505 ioerr
->oer_comp_offset
,
506 ioerr
->oer_comp_length
);
508 merge_ioerr(&accumulated_err
, ioerr
);
510 list_del(&oir
->err_list
);
511 objio_free_result(oir
);
514 pnfs_osd_xdr_encode_ioerr(p
, &accumulated_err
);
518 objlayout_encode_layoutreturn(struct pnfs_layout_hdr
*pnfslay
,
519 struct xdr_stream
*xdr
,
520 const struct nfs4_layoutreturn_args
*args
)
522 struct objlayout
*objlay
= OBJLAYOUT(pnfslay
);
523 struct objlayout_io_res
*oir
, *tmp
;
526 dprintk("%s: Begin\n", __func__
);
527 start
= xdr_reserve_space(xdr
, 4);
530 spin_lock(&objlay
->lock
);
532 list_for_each_entry_safe(oir
, tmp
, &objlay
->err_list
, err_list
) {
533 __be32
*last_xdr
= NULL
, *p
;
537 for (i
= 0; i
< oir
->num_comps
; i
++) {
538 struct pnfs_osd_ioerr
*ioerr
= &oir
->ioerrs
[i
];
540 if (!ioerr
->oer_errno
)
543 dprintk("%s: err[%d]: errno=%d is_write=%d "
544 "dev(%llx:%llx) par=0x%llx obj=0x%llx "
545 "offset=0x%llx length=0x%llx\n",
546 __func__
, i
, ioerr
->oer_errno
,
548 _DEVID_LO(&ioerr
->oer_component
.oid_device_id
),
549 _DEVID_HI(&ioerr
->oer_component
.oid_device_id
),
550 ioerr
->oer_component
.oid_partition_id
,
551 ioerr
->oer_component
.oid_object_id
,
552 ioerr
->oer_comp_offset
,
553 ioerr
->oer_comp_length
);
555 p
= pnfs_osd_xdr_ioerr_reserve_space(xdr
);
558 break; /* accumulated_error */
562 pnfs_osd_xdr_encode_ioerr(p
, &oir
->ioerrs
[i
]);
565 /* TODO: use xdr_write_pages */
567 /* no space for even one error descriptor */
570 /* we've encountered a situation with lots and lots of
571 * errors and no space to encode them all. Use the last
572 * available slot to report the union of all the
575 encode_accumulated_error(objlay
, last_xdr
);
578 list_del(&oir
->err_list
);
579 objio_free_result(oir
);
582 spin_unlock(&objlay
->lock
);
584 *start
= cpu_to_be32((xdr
->p
- start
- 1) * 4);
585 dprintk("%s: Return\n", __func__
);
590 * Get Device Info API for io engines
592 struct objlayout_deviceinfo
{
594 struct pnfs_osd_deviceaddr da
; /* This must be last */
597 /* Initialize and call nfs_getdeviceinfo, then decode and return a
598 * "struct pnfs_osd_deviceaddr *" Eventually objlayout_put_deviceinfo()
601 int objlayout_get_deviceinfo(struct pnfs_layout_hdr
*pnfslay
,
602 struct nfs4_deviceid
*d_id
, struct pnfs_osd_deviceaddr
**deviceaddr
,
605 struct objlayout_deviceinfo
*odi
;
606 struct pnfs_device pd
;
607 struct page
*page
, **pages
;
611 page
= alloc_page(gfp_flags
);
618 memcpy(&pd
.dev_id
, d_id
, sizeof(*d_id
));
619 pd
.layout_type
= LAYOUT_OSD2_OBJECTS
;
622 pd
.pglen
= PAGE_SIZE
;
625 err
= nfs4_proc_getdeviceinfo(NFS_SERVER(pnfslay
->plh_inode
), &pd
);
626 dprintk("%s nfs_getdeviceinfo returned %d\n", __func__
, err
);
630 p
= page_address(page
);
631 odi
= kzalloc(sizeof(*odi
), gfp_flags
);
636 pnfs_osd_xdr_decode_deviceaddr(&odi
->da
, p
);
638 *deviceaddr
= &odi
->da
;
646 void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr
*deviceaddr
)
648 struct objlayout_deviceinfo
*odi
= container_of(deviceaddr
,
649 struct objlayout_deviceinfo
,
652 __free_page(odi
->page
);
657 OBJLAYOUT_MAX_URI_LEN
= 256, OBJLAYOUT_MAX_OSDNAME_LEN
= 64,
658 OBJLAYOUT_MAX_SYSID_HEX_LEN
= OSD_SYSTEMID_LEN
* 2 + 1,
659 OSD_LOGIN_UPCALL_PATHLEN
= 256
662 static char osd_login_prog
[OSD_LOGIN_UPCALL_PATHLEN
] = "/sbin/osd_login";
664 module_param_string(osd_login_prog
, osd_login_prog
, sizeof(osd_login_prog
),
666 MODULE_PARM_DESC(osd_login_prog
, "Path to the osd_login upcall program");
668 struct __auto_login
{
669 char uri
[OBJLAYOUT_MAX_URI_LEN
];
670 char osdname
[OBJLAYOUT_MAX_OSDNAME_LEN
];
671 char systemid_hex
[OBJLAYOUT_MAX_SYSID_HEX_LEN
];
674 static int __objlayout_upcall(struct __auto_login
*login
)
676 static char *envp
[] = { "HOME=/",
678 "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
684 if (unlikely(!osd_login_prog
[0])) {
685 dprintk("%s: osd_login_prog is disabled\n", __func__
);
689 dprintk("%s uri: %s\n", __func__
, login
->uri
);
690 dprintk("%s osdname %s\n", __func__
, login
->osdname
);
691 dprintk("%s systemid_hex %s\n", __func__
, login
->systemid_hex
);
693 argv
[0] = (char *)osd_login_prog
;
695 argv
[2] = login
->uri
;
697 argv
[4] = login
->osdname
;
699 argv
[6] = login
->systemid_hex
;
702 ret
= call_usermodehelper(argv
[0], argv
, envp
, UMH_WAIT_PROC
);
704 * Disable the upcall mechanism if we're getting an ENOENT or
705 * EACCES error. The admin can re-enable it on the fly by using
706 * sysfs to set the objlayoutdriver.osd_login_prog module parameter once
707 * the problem has been fixed.
709 if (ret
== -ENOENT
|| ret
== -EACCES
) {
710 printk(KERN_ERR
"PNFS-OBJ: %s was not found please set "
711 "objlayoutdriver.osd_login_prog kernel parameter!\n",
713 osd_login_prog
[0] = '\0';
715 dprintk("%s %s return value: %d\n", __func__
, osd_login_prog
, ret
);
720 /* Assume dest is all zeros */
721 static void __copy_nfsS_and_zero_terminate(struct nfs4_string s
,
722 char *dest
, int max_len
,
723 const char *var_name
)
728 if (s
.len
>= max_len
) {
730 "objlayout_autologin: %s: s.len(%d) >= max_len(%d)",
731 var_name
, s
.len
, max_len
);
732 s
.len
= max_len
- 1; /* space for null terminator */
735 memcpy(dest
, s
.data
, s
.len
);
738 /* Assume sysid is all zeros */
739 static void _sysid_2_hex(struct nfs4_string s
,
740 char sysid
[OBJLAYOUT_MAX_SYSID_HEX_LEN
])
748 if (s
.len
!= OSD_SYSTEMID_LEN
) {
750 "objlayout_autologin: systemid_len(%d) != OSD_SYSTEMID_LEN",
752 if (s
.len
> OSD_SYSTEMID_LEN
)
753 s
.len
= OSD_SYSTEMID_LEN
;
757 for (i
= 0; i
< s
.len
; i
++)
758 cur
= hex_byte_pack(cur
, s
.data
[i
]);
761 int objlayout_autologin(struct pnfs_osd_deviceaddr
*deviceaddr
)
764 struct __auto_login login
;
766 if (!deviceaddr
->oda_targetaddr
.ota_netaddr
.r_addr
.len
)
769 memset(&login
, 0, sizeof(login
));
770 __copy_nfsS_and_zero_terminate(
771 deviceaddr
->oda_targetaddr
.ota_netaddr
.r_addr
,
772 login
.uri
, sizeof(login
.uri
), "URI");
774 __copy_nfsS_and_zero_terminate(
775 deviceaddr
->oda_osdname
,
776 login
.osdname
, sizeof(login
.osdname
), "OSDNAME");
778 _sysid_2_hex(deviceaddr
->oda_systemid
, login
.systemid_hex
);
780 rc
= __objlayout_upcall(&login
);
781 if (rc
> 0) /* script returns positive values */