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" |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 | 26 | #include "xfs_mount.h" |
a844f451 | 27 | #include "xfs_inode.h" |
239880ef | 28 | #include "xfs_trans.h" |
a844f451 | 29 | #include "xfs_inode_item.h" |
1da177e4 | 30 | #include "xfs_error.h" |
a4fbe6ab DC |
31 | #include "xfs_btree.h" |
32 | #include "xfs_alloc_btree.h" | |
1da177e4 LT |
33 | #include "xfs_alloc.h" |
34 | #include "xfs_ialloc.h" | |
35 | #include "xfs_fsops.h" | |
36 | #include "xfs_itable.h" | |
1da177e4 LT |
37 | #include "xfs_trans_space.h" |
38 | #include "xfs_rtalloc.h" | |
0b1b213f | 39 | #include "xfs_trace.h" |
239880ef | 40 | #include "xfs_log.h" |
a4fbe6ab DC |
41 | #include "xfs_dinode.h" |
42 | #include "xfs_filestream.h" | |
1da177e4 LT |
43 | |
44 | /* | |
45 | * File system operations | |
46 | */ | |
47 | ||
48 | int | |
49 | xfs_fs_geometry( | |
50 | xfs_mount_t *mp, | |
51 | xfs_fsop_geom_t *geo, | |
52 | int new_version) | |
53 | { | |
c4d0c3b0 DR |
54 | |
55 | memset(geo, 0, sizeof(*geo)); | |
56 | ||
1da177e4 LT |
57 | geo->blocksize = mp->m_sb.sb_blocksize; |
58 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
59 | geo->agblocks = mp->m_sb.sb_agblocks; | |
60 | geo->agcount = mp->m_sb.sb_agcount; | |
61 | geo->logblocks = mp->m_sb.sb_logblocks; | |
62 | geo->sectsize = mp->m_sb.sb_sectsize; | |
63 | geo->inodesize = mp->m_sb.sb_inodesize; | |
64 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
65 | geo->datablocks = mp->m_sb.sb_dblocks; | |
66 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
67 | geo->rtextents = mp->m_sb.sb_rextents; | |
68 | geo->logstart = mp->m_sb.sb_logstart; | |
69 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
70 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
71 | if (new_version >= 2) { | |
72 | geo->sunit = mp->m_sb.sb_unit; | |
73 | geo->swidth = mp->m_sb.sb_width; | |
74 | } | |
75 | if (new_version >= 3) { | |
76 | geo->version = XFS_FSOP_GEOM_VERSION; | |
77 | geo->flags = | |
62118709 | 78 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 79 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 80 | (xfs_sb_version_hasnlink(&mp->m_sb) ? |
1da177e4 | 81 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | |
62118709 | 82 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 83 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 84 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 85 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 86 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 87 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 88 | (xfs_sb_version_hasshared(&mp->m_sb) ? |
1da177e4 | 89 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | |
62118709 | 90 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 91 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 92 | (xfs_sb_version_hasdirv2(&mp->m_sb) ? |
1da177e4 | 93 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | |
62118709 | 94 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 95 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
96 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
97 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
98 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
99 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 100 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
101 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
102 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
74137fff DC |
103 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | |
104 | (xfs_sb_version_hascrc(&mp->m_sb) ? | |
2900a579 MT |
105 | XFS_FSOP_GEOM_FLAGS_V5SB : 0) | |
106 | (xfs_sb_version_hasftype(&mp->m_sb) ? | |
107 | XFS_FSOP_GEOM_FLAGS_FTYPE : 0); | |
62118709 | 108 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
109 | mp->m_sb.sb_logsectsize : BBSIZE; |
110 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
111 | geo->dirblocksize = mp->m_dirblksize; | |
112 | } | |
113 | if (new_version >= 4) { | |
114 | geo->flags |= | |
62118709 | 115 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
116 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
117 | geo->logsunit = mp->m_sb.sb_logsunit; | |
118 | } | |
119 | return 0; | |
120 | } | |
121 | ||
fd23683c DC |
122 | static struct xfs_buf * |
123 | xfs_growfs_get_hdr_buf( | |
124 | struct xfs_mount *mp, | |
125 | xfs_daddr_t blkno, | |
126 | size_t numblks, | |
1813dd64 DC |
127 | int flags, |
128 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
129 | { |
130 | struct xfs_buf *bp; | |
131 | ||
132 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
133 | if (!bp) | |
134 | return NULL; | |
135 | ||
136 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
137 | bp->b_bn = blkno; | |
138 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 139 | bp->b_ops = ops; |
fd23683c DC |
140 | |
141 | return bp; | |
142 | } | |
143 | ||
1da177e4 LT |
144 | static int |
145 | xfs_growfs_data_private( | |
146 | xfs_mount_t *mp, /* mount point for filesystem */ | |
147 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
148 | { | |
149 | xfs_agf_t *agf; | |
de497688 | 150 | struct xfs_agfl *agfl; |
1da177e4 LT |
151 | xfs_agi_t *agi; |
152 | xfs_agnumber_t agno; | |
153 | xfs_extlen_t agsize; | |
154 | xfs_extlen_t tmpsize; | |
155 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
156 | xfs_buf_t *bp; |
157 | int bucket; | |
158 | int dpct; | |
59e5a0e8 | 159 | int error, saved_error = 0; |
1da177e4 LT |
160 | xfs_agnumber_t nagcount; |
161 | xfs_agnumber_t nagimax = 0; | |
162 | xfs_rfsblock_t nb, nb_mod; | |
163 | xfs_rfsblock_t new; | |
164 | xfs_rfsblock_t nfree; | |
165 | xfs_agnumber_t oagcount; | |
166 | int pct; | |
1da177e4 LT |
167 | xfs_trans_t *tp; |
168 | ||
169 | nb = in->newblocks; | |
170 | pct = in->imaxpct; | |
171 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
172 | return XFS_ERROR(EINVAL); | |
4cc929ee NS |
173 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
174 | return error; | |
1da177e4 | 175 | dpct = pct - mp->m_sb.sb_imax_pct; |
e70b73f8 | 176 | bp = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 177 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
c3f8fc73 | 178 | XFS_FSS_TO_BB(mp, 1), 0, NULL); |
1922c949 DC |
179 | if (!bp) |
180 | return EIO; | |
eab4e633 | 181 | if (bp->b_error) { |
897366f0 | 182 | error = bp->b_error; |
eab4e633 DC |
183 | xfs_buf_relse(bp); |
184 | return error; | |
185 | } | |
1da177e4 LT |
186 | xfs_buf_relse(bp); |
187 | ||
188 | new = nb; /* use new as a temporary here */ | |
189 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
190 | nagcount = new + (nb_mod != 0); | |
191 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
192 | nagcount--; | |
e6da7c9f | 193 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 LT |
194 | if (nb < mp->m_sb.sb_dblocks) |
195 | return XFS_ERROR(EINVAL); | |
196 | } | |
197 | new = nb - mp->m_sb.sb_dblocks; | |
198 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 199 | |
1c1c6ebc DC |
200 | /* allocate the new per-ag structures */ |
201 | if (nagcount > oagcount) { | |
202 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
203 | if (error) | |
204 | return error; | |
1da177e4 | 205 | } |
1c1c6ebc | 206 | |
1da177e4 | 207 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
84e1e99f | 208 | tp->t_flags |= XFS_TRANS_RESERVE; |
3d3c8b52 JL |
209 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, |
210 | XFS_GROWFS_SPACE_RES(mp), 0); | |
211 | if (error) { | |
1da177e4 LT |
212 | xfs_trans_cancel(tp, 0); |
213 | return error; | |
214 | } | |
215 | ||
1c1c6ebc DC |
216 | /* |
217 | * Write new AG headers to disk. Non-transactional, but written | |
218 | * synchronously so they are completed prior to the growfs transaction | |
219 | * being logged. | |
220 | */ | |
1da177e4 LT |
221 | nfree = 0; |
222 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
223 | __be32 *agfl_bno; |
224 | ||
1da177e4 | 225 | /* |
de497688 | 226 | * AG freespace header block |
1da177e4 | 227 | */ |
fd23683c DC |
228 | bp = xfs_growfs_get_hdr_buf(mp, |
229 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
230 | XFS_FSS_TO_BB(mp, 1), 0, |
231 | &xfs_agf_buf_ops); | |
b522950f CS |
232 | if (!bp) { |
233 | error = ENOMEM; | |
234 | goto error0; | |
235 | } | |
fd23683c | 236 | |
1da177e4 | 237 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
238 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
239 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
240 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
241 | if (agno == nagcount - 1) |
242 | agsize = | |
243 | nb - | |
244 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
245 | else | |
246 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
247 | agf->agf_length = cpu_to_be32(agsize); |
248 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
249 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
250 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
251 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 252 | agf->agf_flfirst = 0; |
16259e7d | 253 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
254 | agf->agf_flcount = 0; |
255 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
256 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
257 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 DC |
258 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
259 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_uuid); | |
260 | ||
c2b006c1 CH |
261 | error = xfs_bwrite(bp); |
262 | xfs_buf_relse(bp); | |
263 | if (error) | |
1da177e4 | 264 | goto error0; |
c2b006c1 | 265 | |
de497688 DC |
266 | /* |
267 | * AG freelist header block | |
268 | */ | |
269 | bp = xfs_growfs_get_hdr_buf(mp, | |
270 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
271 | XFS_FSS_TO_BB(mp, 1), 0, |
272 | &xfs_agfl_buf_ops); | |
de497688 DC |
273 | if (!bp) { |
274 | error = ENOMEM; | |
275 | goto error0; | |
276 | } | |
277 | ||
278 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
279 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
280 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
281 | agfl->agfl_seqno = cpu_to_be32(agno); | |
282 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_uuid); | |
283 | } | |
f94c4457 DC |
284 | |
285 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
de497688 | 286 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) |
f94c4457 | 287 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
288 | |
289 | error = xfs_bwrite(bp); | |
290 | xfs_buf_relse(bp); | |
291 | if (error) | |
292 | goto error0; | |
293 | ||
1da177e4 LT |
294 | /* |
295 | * AG inode header block | |
296 | */ | |
fd23683c DC |
297 | bp = xfs_growfs_get_hdr_buf(mp, |
298 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
299 | XFS_FSS_TO_BB(mp, 1), 0, |
300 | &xfs_agi_buf_ops); | |
b522950f CS |
301 | if (!bp) { |
302 | error = ENOMEM; | |
303 | goto error0; | |
304 | } | |
fd23683c | 305 | |
1da177e4 | 306 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
307 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
308 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
309 | agi->agi_seqno = cpu_to_be32(agno); | |
310 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 311 | agi->agi_count = 0; |
16259e7d CH |
312 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
313 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 314 | agi->agi_freecount = 0; |
16259e7d CH |
315 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
316 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff DC |
317 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
318 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_uuid); | |
1da177e4 | 319 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 320 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 321 | |
c2b006c1 CH |
322 | error = xfs_bwrite(bp); |
323 | xfs_buf_relse(bp); | |
324 | if (error) | |
1da177e4 | 325 | goto error0; |
c2b006c1 | 326 | |
1da177e4 LT |
327 | /* |
328 | * BNO btree root block | |
329 | */ | |
fd23683c DC |
330 | bp = xfs_growfs_get_hdr_buf(mp, |
331 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
332 | BTOBB(mp->m_sb.sb_blocksize), 0, |
333 | &xfs_allocbt_buf_ops); | |
fd23683c | 334 | |
b522950f CS |
335 | if (!bp) { |
336 | error = ENOMEM; | |
337 | goto error0; | |
338 | } | |
b64f3a39 | 339 | |
ee1a47ab CH |
340 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
341 | xfs_btree_init_block(mp, bp, XFS_ABTB_CRC_MAGIC, 0, 1, | |
342 | agno, XFS_BTREE_CRC_BLOCKS); | |
343 | else | |
344 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, | |
345 | agno, 0); | |
346 | ||
b64f3a39 | 347 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
348 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
349 | arec->ar_blockcount = cpu_to_be32( | |
350 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 351 | |
c2b006c1 CH |
352 | error = xfs_bwrite(bp); |
353 | xfs_buf_relse(bp); | |
354 | if (error) | |
1da177e4 | 355 | goto error0; |
c2b006c1 | 356 | |
1da177e4 LT |
357 | /* |
358 | * CNT btree root block | |
359 | */ | |
fd23683c DC |
360 | bp = xfs_growfs_get_hdr_buf(mp, |
361 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
362 | BTOBB(mp->m_sb.sb_blocksize), 0, |
363 | &xfs_allocbt_buf_ops); | |
b522950f CS |
364 | if (!bp) { |
365 | error = ENOMEM; | |
366 | goto error0; | |
367 | } | |
b64f3a39 | 368 | |
ee1a47ab CH |
369 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
370 | xfs_btree_init_block(mp, bp, XFS_ABTC_CRC_MAGIC, 0, 1, | |
371 | agno, XFS_BTREE_CRC_BLOCKS); | |
372 | else | |
373 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, | |
374 | agno, 0); | |
375 | ||
b64f3a39 | 376 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
377 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
378 | arec->ar_blockcount = cpu_to_be32( | |
379 | agsize - be32_to_cpu(arec->ar_startblock)); | |
380 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 381 | |
c2b006c1 CH |
382 | error = xfs_bwrite(bp); |
383 | xfs_buf_relse(bp); | |
384 | if (error) | |
1da177e4 | 385 | goto error0; |
c2b006c1 | 386 | |
1da177e4 LT |
387 | /* |
388 | * INO btree root block | |
389 | */ | |
fd23683c DC |
390 | bp = xfs_growfs_get_hdr_buf(mp, |
391 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
392 | BTOBB(mp->m_sb.sb_blocksize), 0, |
393 | &xfs_inobt_buf_ops); | |
b522950f CS |
394 | if (!bp) { |
395 | error = ENOMEM; | |
396 | goto error0; | |
397 | } | |
fd23683c | 398 | |
ee1a47ab CH |
399 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
400 | xfs_btree_init_block(mp, bp, XFS_IBT_CRC_MAGIC, 0, 0, | |
401 | agno, XFS_BTREE_CRC_BLOCKS); | |
402 | else | |
403 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, | |
404 | agno, 0); | |
b64f3a39 | 405 | |
c2b006c1 CH |
406 | error = xfs_bwrite(bp); |
407 | xfs_buf_relse(bp); | |
408 | if (error) | |
1da177e4 | 409 | goto error0; |
1da177e4 LT |
410 | } |
411 | xfs_trans_agblocks_delta(tp, nfree); | |
412 | /* | |
413 | * There are new blocks in the old last a.g. | |
414 | */ | |
415 | if (new) { | |
416 | /* | |
417 | * Change the agi length. | |
418 | */ | |
419 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
420 | if (error) { | |
421 | goto error0; | |
422 | } | |
423 | ASSERT(bp); | |
424 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 425 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 426 | ASSERT(nagcount == oagcount || |
16259e7d | 427 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
428 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
429 | /* | |
430 | * Change agf length. | |
431 | */ | |
432 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
433 | if (error) { | |
434 | goto error0; | |
435 | } | |
436 | ASSERT(bp); | |
437 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 438 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
439 | ASSERT(be32_to_cpu(agf->agf_length) == |
440 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 441 | |
0164af51 | 442 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
1da177e4 LT |
443 | /* |
444 | * Free the new space. | |
445 | */ | |
446 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 447 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
448 | if (error) { |
449 | goto error0; | |
450 | } | |
451 | } | |
1c1c6ebc DC |
452 | |
453 | /* | |
454 | * Update changed superblock fields transactionally. These are not | |
455 | * seen by the rest of the world until the transaction commit applies | |
456 | * them atomically to the superblock. | |
457 | */ | |
1da177e4 LT |
458 | if (nagcount > oagcount) |
459 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
460 | if (nb > mp->m_sb.sb_dblocks) | |
461 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
462 | nb - mp->m_sb.sb_dblocks); | |
463 | if (nfree) | |
464 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
465 | if (dpct) | |
466 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
1c72bf90 | 467 | error = xfs_trans_commit(tp, 0); |
1c1c6ebc | 468 | if (error) |
1da177e4 | 469 | return error; |
1c1c6ebc | 470 | |
1da177e4 LT |
471 | /* New allocation groups fully initialized, so update mount struct */ |
472 | if (nagimax) | |
473 | mp->m_maxagi = nagimax; | |
474 | if (mp->m_sb.sb_imax_pct) { | |
475 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
476 | do_div(icount, 100); | |
477 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
478 | } else | |
479 | mp->m_maxicount = 0; | |
055388a3 | 480 | xfs_set_low_space_thresholds(mp); |
1c1c6ebc DC |
481 | |
482 | /* update secondary superblocks. */ | |
1da177e4 | 483 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
484 | error = 0; |
485 | /* | |
486 | * new secondary superblocks need to be zeroed, not read from | |
487 | * disk as the contents of the new area we are growing into is | |
488 | * completely unknown. | |
489 | */ | |
490 | if (agno < oagcount) { | |
491 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 492 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 493 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 494 | &xfs_sb_buf_ops); |
1375cb65 DC |
495 | } else { |
496 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
497 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
498 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 499 | if (bp) { |
1813dd64 | 500 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 501 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 502 | } else |
1375cb65 DC |
503 | error = ENOMEM; |
504 | } | |
505 | ||
59e5a0e8 ES |
506 | /* |
507 | * If we get an error reading or writing alternate superblocks, | |
508 | * continue. xfs_repair chooses the "best" superblock based | |
509 | * on most matches; if we break early, we'll leave more | |
510 | * superblocks un-updated than updated, and xfs_repair may | |
511 | * pick them over the properly-updated primary. | |
512 | */ | |
1da177e4 | 513 | if (error) { |
53487786 DC |
514 | xfs_warn(mp, |
515 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 516 | error, agno); |
59e5a0e8 ES |
517 | saved_error = error; |
518 | continue; | |
1da177e4 | 519 | } |
2bdf7cd0 | 520 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); |
98021821 | 521 | |
c2b006c1 CH |
522 | error = xfs_bwrite(bp); |
523 | xfs_buf_relse(bp); | |
524 | if (error) { | |
53487786 | 525 | xfs_warn(mp, |
1da177e4 LT |
526 | "write error %d updating secondary superblock for ag %d", |
527 | error, agno); | |
59e5a0e8 ES |
528 | saved_error = error; |
529 | continue; | |
1da177e4 LT |
530 | } |
531 | } | |
59e5a0e8 | 532 | return saved_error ? saved_error : error; |
1da177e4 LT |
533 | |
534 | error0: | |
535 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); | |
536 | return error; | |
537 | } | |
538 | ||
539 | static int | |
540 | xfs_growfs_log_private( | |
541 | xfs_mount_t *mp, /* mount point for filesystem */ | |
542 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
543 | { | |
544 | xfs_extlen_t nb; | |
545 | ||
546 | nb = in->newblocks; | |
547 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
548 | return XFS_ERROR(EINVAL); | |
549 | if (nb == mp->m_sb.sb_logblocks && | |
550 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
551 | return XFS_ERROR(EINVAL); | |
552 | /* | |
553 | * Moving the log is hard, need new interfaces to sync | |
554 | * the log first, hold off all activity while moving it. | |
555 | * Can have shorter or longer log in the same space, | |
556 | * or transform internal to external log or vice versa. | |
557 | */ | |
558 | return XFS_ERROR(ENOSYS); | |
559 | } | |
560 | ||
561 | /* | |
562 | * protected versions of growfs function acquire and release locks on the mount | |
563 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
564 | * XFS_IOC_FSGROWFSRT | |
565 | */ | |
566 | ||
567 | ||
568 | int | |
569 | xfs_growfs_data( | |
570 | xfs_mount_t *mp, | |
571 | xfs_growfs_data_t *in) | |
572 | { | |
573 | int error; | |
743bb465 | 574 | |
575 | if (!capable(CAP_SYS_ADMIN)) | |
576 | return XFS_ERROR(EPERM); | |
cc92e7ac | 577 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
578 | return XFS_ERROR(EWOULDBLOCK); |
579 | error = xfs_growfs_data_private(mp, in); | |
cc92e7ac | 580 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
581 | return error; |
582 | } | |
583 | ||
584 | int | |
585 | xfs_growfs_log( | |
586 | xfs_mount_t *mp, | |
587 | xfs_growfs_log_t *in) | |
588 | { | |
589 | int error; | |
743bb465 | 590 | |
591 | if (!capable(CAP_SYS_ADMIN)) | |
592 | return XFS_ERROR(EPERM); | |
cc92e7ac | 593 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
594 | return XFS_ERROR(EWOULDBLOCK); |
595 | error = xfs_growfs_log_private(mp, in); | |
cc92e7ac | 596 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
597 | return error; |
598 | } | |
599 | ||
600 | /* | |
601 | * exported through ioctl XFS_IOC_FSCOUNTS | |
602 | */ | |
603 | ||
604 | int | |
605 | xfs_fs_counts( | |
606 | xfs_mount_t *mp, | |
607 | xfs_fsop_counts_t *cnt) | |
608 | { | |
d4d90b57 | 609 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
3685c2a1 | 610 | spin_lock(&mp->m_sb_lock); |
4be536de | 611 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
1da177e4 LT |
612 | cnt->freertx = mp->m_sb.sb_frextents; |
613 | cnt->freeino = mp->m_sb.sb_ifree; | |
614 | cnt->allocino = mp->m_sb.sb_icount; | |
3685c2a1 | 615 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
616 | return 0; |
617 | } | |
618 | ||
619 | /* | |
620 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
621 | * | |
622 | * xfs_reserve_blocks is called to set m_resblks | |
623 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 624 | * is kept in m_resblks_avail. |
1da177e4 LT |
625 | * |
626 | * Reserve the requested number of blocks if available. Otherwise return | |
627 | * as many as possible to satisfy the request. The actual number | |
628 | * reserved are returned in outval | |
629 | * | |
630 | * A null inval pointer indicates that only the current reserved blocks | |
631 | * available should be returned no settings are changed. | |
632 | */ | |
633 | ||
634 | int | |
635 | xfs_reserve_blocks( | |
636 | xfs_mount_t *mp, | |
637 | __uint64_t *inval, | |
638 | xfs_fsop_resblks_t *outval) | |
639 | { | |
dbcabad1 | 640 | __int64_t lcounter, delta, fdblks_delta; |
1da177e4 | 641 | __uint64_t request; |
1da177e4 LT |
642 | |
643 | /* If inval is null, report current values and return */ | |
1da177e4 | 644 | if (inval == (__uint64_t *)NULL) { |
84e1e99f DC |
645 | if (!outval) |
646 | return EINVAL; | |
1da177e4 LT |
647 | outval->resblks = mp->m_resblks; |
648 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 649 | return 0; |
1da177e4 LT |
650 | } |
651 | ||
652 | request = *inval; | |
dbcabad1 DC |
653 | |
654 | /* | |
655 | * With per-cpu counters, this becomes an interesting | |
656 | * problem. we needto work out if we are freeing or allocation | |
657 | * blocks first, then we can do the modification as necessary. | |
658 | * | |
3685c2a1 | 659 | * We do this under the m_sb_lock so that if we are near |
dbcabad1 DC |
660 | * ENOSPC, we will hold out any changes while we work out |
661 | * what to do. This means that the amount of free space can | |
662 | * change while we do this, so we need to retry if we end up | |
663 | * trying to reserve more space than is available. | |
664 | * | |
665 | * We also use the xfs_mod_incore_sb() interface so that we | |
666 | * don't have to care about whether per cpu counter are | |
667 | * enabled, disabled or even compiled in.... | |
668 | */ | |
669 | retry: | |
3685c2a1 | 670 | spin_lock(&mp->m_sb_lock); |
d4d90b57 | 671 | xfs_icsb_sync_counters_locked(mp, 0); |
1da177e4 LT |
672 | |
673 | /* | |
674 | * If our previous reservation was larger than the current value, | |
675 | * then move any unused blocks back to the free pool. | |
676 | */ | |
dbcabad1 | 677 | fdblks_delta = 0; |
1da177e4 LT |
678 | if (mp->m_resblks > request) { |
679 | lcounter = mp->m_resblks_avail - request; | |
680 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 681 | fdblks_delta = lcounter; |
1da177e4 LT |
682 | mp->m_resblks_avail -= lcounter; |
683 | } | |
684 | mp->m_resblks = request; | |
685 | } else { | |
4be536de DC |
686 | __int64_t free; |
687 | ||
688 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
dbcabad1 DC |
689 | if (!free) |
690 | goto out; /* ENOSPC and fdblks_delta = 0 */ | |
691 | ||
1da177e4 | 692 | delta = request - mp->m_resblks; |
4be536de | 693 | lcounter = free - delta; |
1da177e4 LT |
694 | if (lcounter < 0) { |
695 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
696 | mp->m_resblks += free; |
697 | mp->m_resblks_avail += free; | |
dbcabad1 | 698 | fdblks_delta = -free; |
1da177e4 | 699 | } else { |
dbcabad1 | 700 | fdblks_delta = -delta; |
1da177e4 LT |
701 | mp->m_resblks = request; |
702 | mp->m_resblks_avail += delta; | |
703 | } | |
704 | } | |
dbcabad1 | 705 | out: |
84e1e99f DC |
706 | if (outval) { |
707 | outval->resblks = mp->m_resblks; | |
708 | outval->resblks_avail = mp->m_resblks_avail; | |
709 | } | |
3685c2a1 | 710 | spin_unlock(&mp->m_sb_lock); |
dbcabad1 DC |
711 | |
712 | if (fdblks_delta) { | |
713 | /* | |
714 | * If we are putting blocks back here, m_resblks_avail is | |
9da096fd | 715 | * already at its max so this will put it in the free pool. |
dbcabad1 DC |
716 | * |
717 | * If we need space, we'll either succeed in getting it | |
718 | * from the free block count or we'll get an enospc. If | |
719 | * we get a ENOSPC, it means things changed while we were | |
720 | * calculating fdblks_delta and so we should try again to | |
721 | * see if there is anything left to reserve. | |
722 | * | |
723 | * Don't set the reserved flag here - we don't want to reserve | |
724 | * the extra reserve blocks from the reserve..... | |
725 | */ | |
726 | int error; | |
96540c78 CH |
727 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, |
728 | fdblks_delta, 0); | |
dbcabad1 DC |
729 | if (error == ENOSPC) |
730 | goto retry; | |
731 | } | |
014c2544 | 732 | return 0; |
1da177e4 LT |
733 | } |
734 | ||
1a387d3b DC |
735 | /* |
736 | * Dump a transaction into the log that contains no real change. This is needed | |
737 | * to be able to make the log dirty or stamp the current tail LSN into the log | |
738 | * during the covering operation. | |
739 | * | |
740 | * We cannot use an inode here for this - that will push dirty state back up | |
741 | * into the VFS and then periodic inode flushing will prevent log covering from | |
c58efdb4 DC |
742 | * making progress. Hence we log a field in the superblock instead and use a |
743 | * synchronous transaction to ensure the superblock is immediately unpinned | |
744 | * and can be written back. | |
1a387d3b | 745 | */ |
c4be0c1d | 746 | int |
421ad134 | 747 | xfs_fs_log_dummy( |
c58efdb4 | 748 | xfs_mount_t *mp) |
e13a73f0 | 749 | { |
421ad134 | 750 | xfs_trans_t *tp; |
c4be0c1d | 751 | int error; |
e13a73f0 | 752 | |
80641dc6 | 753 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); |
3d3c8b52 | 754 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); |
c4be0c1d | 755 | if (error) { |
e13a73f0 | 756 | xfs_trans_cancel(tp, 0); |
c4be0c1d | 757 | return error; |
e13a73f0 CH |
758 | } |
759 | ||
1a387d3b DC |
760 | /* log the UUID because it is an unchanging field */ |
761 | xfs_mod_sb(tp, XFS_SB_UUID); | |
c58efdb4 | 762 | xfs_trans_set_sync(tp); |
1a387d3b | 763 | return xfs_trans_commit(tp, 0); |
e13a73f0 CH |
764 | } |
765 | ||
1da177e4 LT |
766 | int |
767 | xfs_fs_goingdown( | |
768 | xfs_mount_t *mp, | |
769 | __uint32_t inflags) | |
770 | { | |
771 | switch (inflags) { | |
772 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 773 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 774 | |
f33c6797 | 775 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 776 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
777 | thaw_bdev(sb->s_bdev, sb); |
778 | } | |
189f4bf2 | 779 | |
1da177e4 LT |
780 | break; |
781 | } | |
782 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 783 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
784 | break; |
785 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
786 | xfs_force_shutdown(mp, |
787 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
788 | break; |
789 | default: | |
790 | return XFS_ERROR(EINVAL); | |
791 | } | |
792 | ||
793 | return 0; | |
794 | } | |
2af51f3a DC |
795 | |
796 | /* | |
797 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
798 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
799 | * that absolutely nothing persistent happens to this filesystem after this | |
800 | * point. | |
801 | */ | |
802 | void | |
803 | xfs_do_force_shutdown( | |
804 | xfs_mount_t *mp, | |
805 | int flags, | |
806 | char *fname, | |
807 | int lnnum) | |
808 | { | |
809 | int logerror; | |
810 | ||
811 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
812 | ||
813 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
814 | xfs_notice(mp, | |
815 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
816 | __func__, flags, lnnum, fname, __return_address); | |
817 | } | |
818 | /* | |
819 | * No need to duplicate efforts. | |
820 | */ | |
821 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
822 | return; | |
823 | ||
824 | /* | |
825 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
826 | * queue up anybody new on the log reservations, and wakes up | |
827 | * everybody who's sleeping on log reservations to tell them | |
828 | * the bad news. | |
829 | */ | |
830 | if (xfs_log_force_umount(mp, logerror)) | |
831 | return; | |
832 | ||
833 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
834 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
835 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
836 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
837 | xfs_stack_trace(); | |
838 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
839 | if (logerror) { | |
840 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
841 | "Log I/O Error Detected. Shutting down filesystem"); | |
842 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
843 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
844 | "All device paths lost. Shutting down filesystem"); | |
845 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
846 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
847 | "I/O Error Detected. Shutting down filesystem"); | |
848 | } | |
849 | } | |
850 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
851 | xfs_alert(mp, | |
852 | "Please umount the filesystem and rectify the problem(s)"); | |
853 | } | |
854 | } |