Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef | 21 | #include "xfs_format.h" |
a4fbe6ab | 22 | #include "xfs_log_format.h" |
239880ef | 23 | #include "xfs_trans_resv.h" |
1da177e4 | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
3ab78df2 | 26 | #include "xfs_defer.h" |
8f66193c DC |
27 | #include "xfs_da_format.h" |
28 | #include "xfs_da_btree.h" | |
a844f451 | 29 | #include "xfs_inode.h" |
239880ef | 30 | #include "xfs_trans.h" |
a844f451 | 31 | #include "xfs_inode_item.h" |
1da177e4 | 32 | #include "xfs_error.h" |
a4fbe6ab DC |
33 | #include "xfs_btree.h" |
34 | #include "xfs_alloc_btree.h" | |
1da177e4 | 35 | #include "xfs_alloc.h" |
e70d829f | 36 | #include "xfs_rmap_btree.h" |
1da177e4 LT |
37 | #include "xfs_ialloc.h" |
38 | #include "xfs_fsops.h" | |
39 | #include "xfs_itable.h" | |
1da177e4 LT |
40 | #include "xfs_trans_space.h" |
41 | #include "xfs_rtalloc.h" | |
0b1b213f | 42 | #include "xfs_trace.h" |
239880ef | 43 | #include "xfs_log.h" |
a4fbe6ab | 44 | #include "xfs_filestream.h" |
340785cc | 45 | #include "xfs_rmap.h" |
1da177e4 LT |
46 | |
47 | /* | |
48 | * File system operations | |
49 | */ | |
50 | ||
51 | int | |
52 | xfs_fs_geometry( | |
53 | xfs_mount_t *mp, | |
54 | xfs_fsop_geom_t *geo, | |
55 | int new_version) | |
56 | { | |
c4d0c3b0 DR |
57 | |
58 | memset(geo, 0, sizeof(*geo)); | |
59 | ||
1da177e4 LT |
60 | geo->blocksize = mp->m_sb.sb_blocksize; |
61 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
62 | geo->agblocks = mp->m_sb.sb_agblocks; | |
63 | geo->agcount = mp->m_sb.sb_agcount; | |
64 | geo->logblocks = mp->m_sb.sb_logblocks; | |
65 | geo->sectsize = mp->m_sb.sb_sectsize; | |
66 | geo->inodesize = mp->m_sb.sb_inodesize; | |
67 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
68 | geo->datablocks = mp->m_sb.sb_dblocks; | |
69 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
70 | geo->rtextents = mp->m_sb.sb_rextents; | |
71 | geo->logstart = mp->m_sb.sb_logstart; | |
72 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
73 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
74 | if (new_version >= 2) { | |
75 | geo->sunit = mp->m_sb.sb_unit; | |
76 | geo->swidth = mp->m_sb.sb_width; | |
77 | } | |
78 | if (new_version >= 3) { | |
79 | geo->version = XFS_FSOP_GEOM_VERSION; | |
263997a6 | 80 | geo->flags = XFS_FSOP_GEOM_FLAGS_NLINK | |
5d074a4f | 81 | XFS_FSOP_GEOM_FLAGS_DIRV2 | |
62118709 | 82 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 83 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 84 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 85 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 86 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 87 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 88 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 89 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 90 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 91 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 92 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 93 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
94 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
95 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
96 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
97 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 98 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
99 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
100 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
74137fff DC |
101 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | |
102 | (xfs_sb_version_hascrc(&mp->m_sb) ? | |
2900a579 MT |
103 | XFS_FSOP_GEOM_FLAGS_V5SB : 0) | |
104 | (xfs_sb_version_hasftype(&mp->m_sb) ? | |
0c153c1e BF |
105 | XFS_FSOP_GEOM_FLAGS_FTYPE : 0) | |
106 | (xfs_sb_version_hasfinobt(&mp->m_sb) ? | |
502a4e72 BF |
107 | XFS_FSOP_GEOM_FLAGS_FINOBT : 0) | |
108 | (xfs_sb_version_hassparseinodes(&mp->m_sb) ? | |
5d650e90 DW |
109 | XFS_FSOP_GEOM_FLAGS_SPINODES : 0) | |
110 | (xfs_sb_version_hasrmapbt(&mp->m_sb) ? | |
111 | XFS_FSOP_GEOM_FLAGS_RMAPBT : 0); | |
62118709 | 112 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
113 | mp->m_sb.sb_logsectsize : BBSIZE; |
114 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
8f66193c | 115 | geo->dirblocksize = mp->m_dir_geo->blksize; |
1da177e4 LT |
116 | } |
117 | if (new_version >= 4) { | |
118 | geo->flags |= | |
62118709 | 119 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
120 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
121 | geo->logsunit = mp->m_sb.sb_logsunit; | |
122 | } | |
123 | return 0; | |
124 | } | |
125 | ||
fd23683c DC |
126 | static struct xfs_buf * |
127 | xfs_growfs_get_hdr_buf( | |
128 | struct xfs_mount *mp, | |
129 | xfs_daddr_t blkno, | |
130 | size_t numblks, | |
1813dd64 DC |
131 | int flags, |
132 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
133 | { |
134 | struct xfs_buf *bp; | |
135 | ||
136 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
137 | if (!bp) | |
138 | return NULL; | |
139 | ||
140 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
141 | bp->b_bn = blkno; | |
142 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 143 | bp->b_ops = ops; |
fd23683c DC |
144 | |
145 | return bp; | |
146 | } | |
147 | ||
1da177e4 LT |
148 | static int |
149 | xfs_growfs_data_private( | |
150 | xfs_mount_t *mp, /* mount point for filesystem */ | |
151 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
152 | { | |
153 | xfs_agf_t *agf; | |
de497688 | 154 | struct xfs_agfl *agfl; |
1da177e4 LT |
155 | xfs_agi_t *agi; |
156 | xfs_agnumber_t agno; | |
157 | xfs_extlen_t agsize; | |
158 | xfs_extlen_t tmpsize; | |
159 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
160 | xfs_buf_t *bp; |
161 | int bucket; | |
162 | int dpct; | |
59e5a0e8 | 163 | int error, saved_error = 0; |
1da177e4 LT |
164 | xfs_agnumber_t nagcount; |
165 | xfs_agnumber_t nagimax = 0; | |
166 | xfs_rfsblock_t nb, nb_mod; | |
167 | xfs_rfsblock_t new; | |
168 | xfs_rfsblock_t nfree; | |
169 | xfs_agnumber_t oagcount; | |
170 | int pct; | |
1da177e4 LT |
171 | xfs_trans_t *tp; |
172 | ||
173 | nb = in->newblocks; | |
174 | pct = in->imaxpct; | |
175 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
2451337d | 176 | return -EINVAL; |
4cc929ee NS |
177 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
178 | return error; | |
1da177e4 | 179 | dpct = pct - mp->m_sb.sb_imax_pct; |
ba372674 | 180 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 181 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
182 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
183 | if (error) | |
eab4e633 | 184 | return error; |
1da177e4 LT |
185 | xfs_buf_relse(bp); |
186 | ||
187 | new = nb; /* use new as a temporary here */ | |
188 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
189 | nagcount = new + (nb_mod != 0); | |
190 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
191 | nagcount--; | |
e6da7c9f | 192 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 193 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 194 | return -EINVAL; |
1da177e4 LT |
195 | } |
196 | new = nb - mp->m_sb.sb_dblocks; | |
197 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 198 | |
1c1c6ebc DC |
199 | /* allocate the new per-ag structures */ |
200 | if (nagcount > oagcount) { | |
201 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
202 | if (error) | |
203 | return error; | |
1da177e4 | 204 | } |
1c1c6ebc | 205 | |
253f4911 CH |
206 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, |
207 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
208 | if (error) | |
1da177e4 | 209 | return error; |
1da177e4 | 210 | |
1c1c6ebc DC |
211 | /* |
212 | * Write new AG headers to disk. Non-transactional, but written | |
213 | * synchronously so they are completed prior to the growfs transaction | |
214 | * being logged. | |
215 | */ | |
1da177e4 LT |
216 | nfree = 0; |
217 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
218 | __be32 *agfl_bno; |
219 | ||
1da177e4 | 220 | /* |
de497688 | 221 | * AG freespace header block |
1da177e4 | 222 | */ |
fd23683c DC |
223 | bp = xfs_growfs_get_hdr_buf(mp, |
224 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
225 | XFS_FSS_TO_BB(mp, 1), 0, |
226 | &xfs_agf_buf_ops); | |
b522950f | 227 | if (!bp) { |
2451337d | 228 | error = -ENOMEM; |
b522950f CS |
229 | goto error0; |
230 | } | |
fd23683c | 231 | |
1da177e4 | 232 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
233 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
234 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
235 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
236 | if (agno == nagcount - 1) |
237 | agsize = | |
238 | nb - | |
239 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
240 | else | |
241 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
242 | agf->agf_length = cpu_to_be32(agsize); |
243 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
244 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
245 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
246 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
e70d829f DW |
247 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { |
248 | agf->agf_roots[XFS_BTNUM_RMAPi] = | |
249 | cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
250 | agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); | |
f32866fd | 251 | agf->agf_rmap_blocks = cpu_to_be32(1); |
e70d829f DW |
252 | } |
253 | ||
ad747e3b DC |
254 | agf->agf_flfirst = cpu_to_be32(1); |
255 | agf->agf_fllast = 0; | |
1da177e4 | 256 | agf->agf_flcount = 0; |
8018026e | 257 | tmpsize = agsize - mp->m_ag_prealloc_blocks; |
16259e7d CH |
258 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
259 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 | 260 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 261 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); |
4e0e6040 | 262 | |
c2b006c1 CH |
263 | error = xfs_bwrite(bp); |
264 | xfs_buf_relse(bp); | |
265 | if (error) | |
1da177e4 | 266 | goto error0; |
c2b006c1 | 267 | |
de497688 DC |
268 | /* |
269 | * AG freelist header block | |
270 | */ | |
271 | bp = xfs_growfs_get_hdr_buf(mp, | |
272 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
273 | XFS_FSS_TO_BB(mp, 1), 0, |
274 | &xfs_agfl_buf_ops); | |
de497688 | 275 | if (!bp) { |
2451337d | 276 | error = -ENOMEM; |
de497688 DC |
277 | goto error0; |
278 | } | |
279 | ||
280 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
281 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
282 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
283 | agfl->agfl_seqno = cpu_to_be32(agno); | |
ac383de2 | 284 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); |
77c95bba | 285 | } |
f94c4457 DC |
286 | |
287 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
de497688 | 288 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) |
f94c4457 | 289 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
290 | |
291 | error = xfs_bwrite(bp); | |
292 | xfs_buf_relse(bp); | |
293 | if (error) | |
294 | goto error0; | |
295 | ||
1da177e4 LT |
296 | /* |
297 | * AG inode header block | |
298 | */ | |
fd23683c DC |
299 | bp = xfs_growfs_get_hdr_buf(mp, |
300 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
301 | XFS_FSS_TO_BB(mp, 1), 0, |
302 | &xfs_agi_buf_ops); | |
b522950f | 303 | if (!bp) { |
2451337d | 304 | error = -ENOMEM; |
b522950f CS |
305 | goto error0; |
306 | } | |
fd23683c | 307 | |
1da177e4 | 308 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
309 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
310 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
311 | agi->agi_seqno = cpu_to_be32(agno); | |
312 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 313 | agi->agi_count = 0; |
16259e7d CH |
314 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
315 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 316 | agi->agi_freecount = 0; |
16259e7d CH |
317 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
318 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff | 319 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 320 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); |
a3fa516d BF |
321 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { |
322 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
323 | agi->agi_free_level = cpu_to_be32(1); | |
324 | } | |
1da177e4 | 325 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 326 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 327 | |
c2b006c1 CH |
328 | error = xfs_bwrite(bp); |
329 | xfs_buf_relse(bp); | |
330 | if (error) | |
1da177e4 | 331 | goto error0; |
c2b006c1 | 332 | |
1da177e4 LT |
333 | /* |
334 | * BNO btree root block | |
335 | */ | |
fd23683c DC |
336 | bp = xfs_growfs_get_hdr_buf(mp, |
337 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
338 | BTOBB(mp->m_sb.sb_blocksize), 0, |
339 | &xfs_allocbt_buf_ops); | |
fd23683c | 340 | |
b522950f | 341 | if (!bp) { |
2451337d | 342 | error = -ENOMEM; |
b522950f CS |
343 | goto error0; |
344 | } | |
b64f3a39 | 345 | |
ee1a47ab CH |
346 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
347 | xfs_btree_init_block(mp, bp, XFS_ABTB_CRC_MAGIC, 0, 1, | |
348 | agno, XFS_BTREE_CRC_BLOCKS); | |
349 | else | |
350 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, | |
351 | agno, 0); | |
352 | ||
b64f3a39 | 353 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 354 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
355 | arec->ar_blockcount = cpu_to_be32( |
356 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 357 | |
c2b006c1 CH |
358 | error = xfs_bwrite(bp); |
359 | xfs_buf_relse(bp); | |
360 | if (error) | |
1da177e4 | 361 | goto error0; |
c2b006c1 | 362 | |
1da177e4 LT |
363 | /* |
364 | * CNT btree root block | |
365 | */ | |
fd23683c DC |
366 | bp = xfs_growfs_get_hdr_buf(mp, |
367 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
368 | BTOBB(mp->m_sb.sb_blocksize), 0, |
369 | &xfs_allocbt_buf_ops); | |
b522950f | 370 | if (!bp) { |
2451337d | 371 | error = -ENOMEM; |
b522950f CS |
372 | goto error0; |
373 | } | |
b64f3a39 | 374 | |
ee1a47ab CH |
375 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
376 | xfs_btree_init_block(mp, bp, XFS_ABTC_CRC_MAGIC, 0, 1, | |
377 | agno, XFS_BTREE_CRC_BLOCKS); | |
378 | else | |
379 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, | |
380 | agno, 0); | |
381 | ||
b64f3a39 | 382 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
8018026e | 383 | arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); |
16259e7d CH |
384 | arec->ar_blockcount = cpu_to_be32( |
385 | agsize - be32_to_cpu(arec->ar_startblock)); | |
386 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 387 | |
c2b006c1 CH |
388 | error = xfs_bwrite(bp); |
389 | xfs_buf_relse(bp); | |
390 | if (error) | |
1da177e4 | 391 | goto error0; |
c2b006c1 | 392 | |
e70d829f DW |
393 | /* RMAP btree root block */ |
394 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { | |
395 | struct xfs_rmap_rec *rrec; | |
396 | struct xfs_btree_block *block; | |
397 | ||
398 | bp = xfs_growfs_get_hdr_buf(mp, | |
399 | XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)), | |
400 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
401 | &xfs_rmapbt_buf_ops); | |
402 | if (!bp) { | |
403 | error = -ENOMEM; | |
404 | goto error0; | |
405 | } | |
406 | ||
407 | xfs_btree_init_block(mp, bp, XFS_RMAP_CRC_MAGIC, 0, 0, | |
408 | agno, XFS_BTREE_CRC_BLOCKS); | |
409 | block = XFS_BUF_TO_BLOCK(bp); | |
410 | ||
411 | ||
412 | /* | |
413 | * mark the AG header regions as static metadata The BNO | |
414 | * btree block is the first block after the headers, so | |
415 | * it's location defines the size of region the static | |
416 | * metadata consumes. | |
417 | * | |
418 | * Note: unlike mkfs, we never have to account for log | |
419 | * space when growing the data regions | |
420 | */ | |
421 | rrec = XFS_RMAP_REC_ADDR(block, 1); | |
422 | rrec->rm_startblock = 0; | |
423 | rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
424 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); | |
425 | rrec->rm_offset = 0; | |
426 | be16_add_cpu(&block->bb_numrecs, 1); | |
427 | ||
428 | /* account freespace btree root blocks */ | |
429 | rrec = XFS_RMAP_REC_ADDR(block, 2); | |
430 | rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
431 | rrec->rm_blockcount = cpu_to_be32(2); | |
432 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
433 | rrec->rm_offset = 0; | |
434 | be16_add_cpu(&block->bb_numrecs, 1); | |
435 | ||
436 | /* account inode btree root blocks */ | |
437 | rrec = XFS_RMAP_REC_ADDR(block, 3); | |
438 | rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); | |
439 | rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - | |
440 | XFS_IBT_BLOCK(mp)); | |
441 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); | |
442 | rrec->rm_offset = 0; | |
443 | be16_add_cpu(&block->bb_numrecs, 1); | |
444 | ||
445 | /* account for rmap btree root */ | |
446 | rrec = XFS_RMAP_REC_ADDR(block, 4); | |
447 | rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); | |
448 | rrec->rm_blockcount = cpu_to_be32(1); | |
449 | rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); | |
450 | rrec->rm_offset = 0; | |
451 | be16_add_cpu(&block->bb_numrecs, 1); | |
452 | ||
453 | error = xfs_bwrite(bp); | |
454 | xfs_buf_relse(bp); | |
455 | if (error) | |
456 | goto error0; | |
457 | } | |
458 | ||
1da177e4 LT |
459 | /* |
460 | * INO btree root block | |
461 | */ | |
fd23683c DC |
462 | bp = xfs_growfs_get_hdr_buf(mp, |
463 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
464 | BTOBB(mp->m_sb.sb_blocksize), 0, |
465 | &xfs_inobt_buf_ops); | |
b522950f | 466 | if (!bp) { |
2451337d | 467 | error = -ENOMEM; |
b522950f CS |
468 | goto error0; |
469 | } | |
fd23683c | 470 | |
ee1a47ab CH |
471 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
472 | xfs_btree_init_block(mp, bp, XFS_IBT_CRC_MAGIC, 0, 0, | |
473 | agno, XFS_BTREE_CRC_BLOCKS); | |
474 | else | |
475 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, | |
476 | agno, 0); | |
b64f3a39 | 477 | |
c2b006c1 CH |
478 | error = xfs_bwrite(bp); |
479 | xfs_buf_relse(bp); | |
480 | if (error) | |
1da177e4 | 481 | goto error0; |
a3fa516d BF |
482 | |
483 | /* | |
484 | * FINO btree root block | |
485 | */ | |
486 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
487 | bp = xfs_growfs_get_hdr_buf(mp, | |
488 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
489 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
490 | &xfs_inobt_buf_ops); | |
491 | if (!bp) { | |
2451337d | 492 | error = -ENOMEM; |
a3fa516d BF |
493 | goto error0; |
494 | } | |
495 | ||
496 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
497 | xfs_btree_init_block(mp, bp, XFS_FIBT_CRC_MAGIC, | |
498 | 0, 0, agno, | |
499 | XFS_BTREE_CRC_BLOCKS); | |
500 | else | |
501 | xfs_btree_init_block(mp, bp, XFS_FIBT_MAGIC, 0, | |
502 | 0, agno, 0); | |
503 | ||
504 | error = xfs_bwrite(bp); | |
505 | xfs_buf_relse(bp); | |
506 | if (error) | |
507 | goto error0; | |
508 | } | |
509 | ||
1da177e4 LT |
510 | } |
511 | xfs_trans_agblocks_delta(tp, nfree); | |
512 | /* | |
513 | * There are new blocks in the old last a.g. | |
514 | */ | |
515 | if (new) { | |
340785cc DW |
516 | struct xfs_owner_info oinfo; |
517 | ||
1da177e4 LT |
518 | /* |
519 | * Change the agi length. | |
520 | */ | |
521 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
522 | if (error) { | |
523 | goto error0; | |
524 | } | |
525 | ASSERT(bp); | |
526 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 527 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 528 | ASSERT(nagcount == oagcount || |
16259e7d | 529 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
530 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
531 | /* | |
532 | * Change agf length. | |
533 | */ | |
534 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
535 | if (error) { | |
536 | goto error0; | |
537 | } | |
538 | ASSERT(bp); | |
539 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 540 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
541 | ASSERT(be32_to_cpu(agf->agf_length) == |
542 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 543 | |
0164af51 | 544 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
340785cc | 545 | |
1da177e4 LT |
546 | /* |
547 | * Free the new space. | |
340785cc DW |
548 | * |
549 | * XFS_RMAP_OWN_NULL is used here to tell the rmap btree that | |
550 | * this doesn't actually exist in the rmap btree. | |
1da177e4 | 551 | */ |
340785cc DW |
552 | xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL); |
553 | error = xfs_free_extent(tp, | |
554 | XFS_AGB_TO_FSB(mp, agno, | |
555 | be32_to_cpu(agf->agf_length) - new), | |
556 | new, &oinfo); | |
557 | if (error) | |
1da177e4 | 558 | goto error0; |
1da177e4 | 559 | } |
1c1c6ebc DC |
560 | |
561 | /* | |
562 | * Update changed superblock fields transactionally. These are not | |
563 | * seen by the rest of the world until the transaction commit applies | |
564 | * them atomically to the superblock. | |
565 | */ | |
1da177e4 LT |
566 | if (nagcount > oagcount) |
567 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
568 | if (nb > mp->m_sb.sb_dblocks) | |
569 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
570 | nb - mp->m_sb.sb_dblocks); | |
571 | if (nfree) | |
572 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
573 | if (dpct) | |
574 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
f8079b85 | 575 | xfs_trans_set_sync(tp); |
70393313 | 576 | error = xfs_trans_commit(tp); |
1c1c6ebc | 577 | if (error) |
1da177e4 | 578 | return error; |
1c1c6ebc | 579 | |
1da177e4 LT |
580 | /* New allocation groups fully initialized, so update mount struct */ |
581 | if (nagimax) | |
582 | mp->m_maxagi = nagimax; | |
583 | if (mp->m_sb.sb_imax_pct) { | |
584 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
585 | do_div(icount, 100); | |
586 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
587 | } else | |
588 | mp->m_maxicount = 0; | |
055388a3 | 589 | xfs_set_low_space_thresholds(mp); |
52548852 | 590 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
1c1c6ebc DC |
591 | |
592 | /* update secondary superblocks. */ | |
1da177e4 | 593 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
594 | error = 0; |
595 | /* | |
596 | * new secondary superblocks need to be zeroed, not read from | |
597 | * disk as the contents of the new area we are growing into is | |
598 | * completely unknown. | |
599 | */ | |
600 | if (agno < oagcount) { | |
601 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 602 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 603 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 604 | &xfs_sb_buf_ops); |
1375cb65 DC |
605 | } else { |
606 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
607 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
608 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 609 | if (bp) { |
1813dd64 | 610 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 611 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 612 | } else |
2451337d | 613 | error = -ENOMEM; |
1375cb65 DC |
614 | } |
615 | ||
59e5a0e8 ES |
616 | /* |
617 | * If we get an error reading or writing alternate superblocks, | |
618 | * continue. xfs_repair chooses the "best" superblock based | |
619 | * on most matches; if we break early, we'll leave more | |
620 | * superblocks un-updated than updated, and xfs_repair may | |
621 | * pick them over the properly-updated primary. | |
622 | */ | |
1da177e4 | 623 | if (error) { |
53487786 DC |
624 | xfs_warn(mp, |
625 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 626 | error, agno); |
59e5a0e8 ES |
627 | saved_error = error; |
628 | continue; | |
1da177e4 | 629 | } |
4d11a402 | 630 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
98021821 | 631 | |
c2b006c1 CH |
632 | error = xfs_bwrite(bp); |
633 | xfs_buf_relse(bp); | |
634 | if (error) { | |
53487786 | 635 | xfs_warn(mp, |
1da177e4 LT |
636 | "write error %d updating secondary superblock for ag %d", |
637 | error, agno); | |
59e5a0e8 ES |
638 | saved_error = error; |
639 | continue; | |
1da177e4 LT |
640 | } |
641 | } | |
59e5a0e8 | 642 | return saved_error ? saved_error : error; |
1da177e4 LT |
643 | |
644 | error0: | |
4906e215 | 645 | xfs_trans_cancel(tp); |
1da177e4 LT |
646 | return error; |
647 | } | |
648 | ||
649 | static int | |
650 | xfs_growfs_log_private( | |
651 | xfs_mount_t *mp, /* mount point for filesystem */ | |
652 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
653 | { | |
654 | xfs_extlen_t nb; | |
655 | ||
656 | nb = in->newblocks; | |
657 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
2451337d | 658 | return -EINVAL; |
1da177e4 LT |
659 | if (nb == mp->m_sb.sb_logblocks && |
660 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
2451337d | 661 | return -EINVAL; |
1da177e4 LT |
662 | /* |
663 | * Moving the log is hard, need new interfaces to sync | |
664 | * the log first, hold off all activity while moving it. | |
665 | * Can have shorter or longer log in the same space, | |
666 | * or transform internal to external log or vice versa. | |
667 | */ | |
2451337d | 668 | return -ENOSYS; |
1da177e4 LT |
669 | } |
670 | ||
671 | /* | |
672 | * protected versions of growfs function acquire and release locks on the mount | |
673 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
674 | * XFS_IOC_FSGROWFSRT | |
675 | */ | |
676 | ||
677 | ||
678 | int | |
679 | xfs_growfs_data( | |
680 | xfs_mount_t *mp, | |
681 | xfs_growfs_data_t *in) | |
682 | { | |
683 | int error; | |
743bb465 | 684 | |
685 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 686 | return -EPERM; |
cc92e7ac | 687 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 688 | return -EWOULDBLOCK; |
1da177e4 | 689 | error = xfs_growfs_data_private(mp, in); |
52785112 CH |
690 | /* |
691 | * Increment the generation unconditionally, the error could be from | |
692 | * updating the secondary superblocks, in which case the new size | |
693 | * is live already. | |
694 | */ | |
695 | mp->m_generation++; | |
cc92e7ac | 696 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
697 | return error; |
698 | } | |
699 | ||
700 | int | |
701 | xfs_growfs_log( | |
702 | xfs_mount_t *mp, | |
703 | xfs_growfs_log_t *in) | |
704 | { | |
705 | int error; | |
743bb465 | 706 | |
707 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 708 | return -EPERM; |
cc92e7ac | 709 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 710 | return -EWOULDBLOCK; |
1da177e4 | 711 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 712 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
713 | return error; |
714 | } | |
715 | ||
716 | /* | |
717 | * exported through ioctl XFS_IOC_FSCOUNTS | |
718 | */ | |
719 | ||
720 | int | |
721 | xfs_fs_counts( | |
722 | xfs_mount_t *mp, | |
723 | xfs_fsop_counts_t *cnt) | |
724 | { | |
501ab323 | 725 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 726 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada | 727 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
52548852 | 728 | mp->m_alloc_set_aside; |
501ab323 | 729 | |
3685c2a1 | 730 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 731 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 732 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
733 | return 0; |
734 | } | |
735 | ||
736 | /* | |
737 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
738 | * | |
739 | * xfs_reserve_blocks is called to set m_resblks | |
740 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 741 | * is kept in m_resblks_avail. |
1da177e4 LT |
742 | * |
743 | * Reserve the requested number of blocks if available. Otherwise return | |
744 | * as many as possible to satisfy the request. The actual number | |
745 | * reserved are returned in outval | |
746 | * | |
747 | * A null inval pointer indicates that only the current reserved blocks | |
748 | * available should be returned no settings are changed. | |
749 | */ | |
750 | ||
751 | int | |
752 | xfs_reserve_blocks( | |
753 | xfs_mount_t *mp, | |
754 | __uint64_t *inval, | |
755 | xfs_fsop_resblks_t *outval) | |
756 | { | |
408fd484 BF |
757 | __int64_t lcounter, delta; |
758 | __int64_t fdblks_delta = 0; | |
1da177e4 | 759 | __uint64_t request; |
408fd484 BF |
760 | __int64_t free; |
761 | int error = 0; | |
1da177e4 LT |
762 | |
763 | /* If inval is null, report current values and return */ | |
1da177e4 | 764 | if (inval == (__uint64_t *)NULL) { |
84e1e99f | 765 | if (!outval) |
2451337d | 766 | return -EINVAL; |
1da177e4 LT |
767 | outval->resblks = mp->m_resblks; |
768 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 769 | return 0; |
1da177e4 LT |
770 | } |
771 | ||
772 | request = *inval; | |
dbcabad1 DC |
773 | |
774 | /* | |
408fd484 BF |
775 | * With per-cpu counters, this becomes an interesting problem. we need |
776 | * to work out if we are freeing or allocation blocks first, then we can | |
777 | * do the modification as necessary. | |
dbcabad1 | 778 | * |
408fd484 BF |
779 | * We do this under the m_sb_lock so that if we are near ENOSPC, we will |
780 | * hold out any changes while we work out what to do. This means that | |
781 | * the amount of free space can change while we do this, so we need to | |
782 | * retry if we end up trying to reserve more space than is available. | |
dbcabad1 | 783 | */ |
3685c2a1 | 784 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
785 | |
786 | /* | |
787 | * If our previous reservation was larger than the current value, | |
408fd484 BF |
788 | * then move any unused blocks back to the free pool. Modify the resblks |
789 | * counters directly since we shouldn't have any problems unreserving | |
790 | * space. | |
1da177e4 | 791 | */ |
1da177e4 LT |
792 | if (mp->m_resblks > request) { |
793 | lcounter = mp->m_resblks_avail - request; | |
794 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 795 | fdblks_delta = lcounter; |
1da177e4 LT |
796 | mp->m_resblks_avail -= lcounter; |
797 | } | |
798 | mp->m_resblks = request; | |
408fd484 BF |
799 | if (fdblks_delta) { |
800 | spin_unlock(&mp->m_sb_lock); | |
801 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); | |
802 | spin_lock(&mp->m_sb_lock); | |
803 | } | |
804 | ||
805 | goto out; | |
806 | } | |
4be536de | 807 | |
408fd484 BF |
808 | /* |
809 | * If the request is larger than the current reservation, reserve the | |
810 | * blocks before we update the reserve counters. Sample m_fdblocks and | |
811 | * perform a partial reservation if the request exceeds free space. | |
812 | */ | |
813 | error = -ENOSPC; | |
814 | do { | |
0d485ada | 815 | free = percpu_counter_sum(&mp->m_fdblocks) - |
52548852 | 816 | mp->m_alloc_set_aside; |
dbcabad1 | 817 | if (!free) |
408fd484 | 818 | break; |
dbcabad1 | 819 | |
1da177e4 | 820 | delta = request - mp->m_resblks; |
4be536de | 821 | lcounter = free - delta; |
408fd484 | 822 | if (lcounter < 0) |
1da177e4 | 823 | /* We can't satisfy the request, just get what we can */ |
408fd484 BF |
824 | fdblks_delta = free; |
825 | else | |
826 | fdblks_delta = delta; | |
dbcabad1 | 827 | |
dbcabad1 | 828 | /* |
408fd484 BF |
829 | * We'll either succeed in getting space from the free block |
830 | * count or we'll get an ENOSPC. If we get a ENOSPC, it means | |
831 | * things changed while we were calculating fdblks_delta and so | |
832 | * we should try again to see if there is anything left to | |
833 | * reserve. | |
dbcabad1 DC |
834 | * |
835 | * Don't set the reserved flag here - we don't want to reserve | |
836 | * the extra reserve blocks from the reserve..... | |
837 | */ | |
408fd484 BF |
838 | spin_unlock(&mp->m_sb_lock); |
839 | error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); | |
840 | spin_lock(&mp->m_sb_lock); | |
841 | } while (error == -ENOSPC); | |
842 | ||
843 | /* | |
844 | * Update the reserve counters if blocks have been successfully | |
845 | * allocated. | |
846 | */ | |
847 | if (!error && fdblks_delta) { | |
848 | mp->m_resblks += fdblks_delta; | |
849 | mp->m_resblks_avail += fdblks_delta; | |
dbcabad1 | 850 | } |
408fd484 BF |
851 | |
852 | out: | |
853 | if (outval) { | |
854 | outval->resblks = mp->m_resblks; | |
855 | outval->resblks_avail = mp->m_resblks_avail; | |
856 | } | |
857 | ||
858 | spin_unlock(&mp->m_sb_lock); | |
859 | return error; | |
1da177e4 LT |
860 | } |
861 | ||
1da177e4 LT |
862 | int |
863 | xfs_fs_goingdown( | |
864 | xfs_mount_t *mp, | |
865 | __uint32_t inflags) | |
866 | { | |
867 | switch (inflags) { | |
868 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 869 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 870 | |
f33c6797 | 871 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 872 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
873 | thaw_bdev(sb->s_bdev, sb); |
874 | } | |
189f4bf2 | 875 | |
1da177e4 LT |
876 | break; |
877 | } | |
878 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 879 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
880 | break; |
881 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
882 | xfs_force_shutdown(mp, |
883 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
884 | break; |
885 | default: | |
2451337d | 886 | return -EINVAL; |
1da177e4 LT |
887 | } |
888 | ||
889 | return 0; | |
890 | } | |
2af51f3a DC |
891 | |
892 | /* | |
893 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
894 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
895 | * that absolutely nothing persistent happens to this filesystem after this | |
896 | * point. | |
897 | */ | |
898 | void | |
899 | xfs_do_force_shutdown( | |
900 | xfs_mount_t *mp, | |
901 | int flags, | |
902 | char *fname, | |
903 | int lnnum) | |
904 | { | |
905 | int logerror; | |
906 | ||
907 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
908 | ||
909 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
910 | xfs_notice(mp, | |
911 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
912 | __func__, flags, lnnum, fname, __return_address); | |
913 | } | |
914 | /* | |
915 | * No need to duplicate efforts. | |
916 | */ | |
917 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
918 | return; | |
919 | ||
920 | /* | |
921 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
922 | * queue up anybody new on the log reservations, and wakes up | |
923 | * everybody who's sleeping on log reservations to tell them | |
924 | * the bad news. | |
925 | */ | |
926 | if (xfs_log_force_umount(mp, logerror)) | |
927 | return; | |
928 | ||
929 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
930 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
931 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
932 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
933 | xfs_stack_trace(); | |
934 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
935 | if (logerror) { | |
936 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
937 | "Log I/O Error Detected. Shutting down filesystem"); | |
938 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
939 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
940 | "All device paths lost. Shutting down filesystem"); | |
941 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
942 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
943 | "I/O Error Detected. Shutting down filesystem"); | |
944 | } | |
945 | } | |
946 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
947 | xfs_alert(mp, | |
948 | "Please umount the filesystem and rectify the problem(s)"); | |
949 | } | |
950 | } |