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