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