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" |
1da177e4 | 20 | #include "xfs_types.h" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_bmap_btree.h" |
a844f451 | 27 | #include "xfs_alloc_btree.h" |
1da177e4 | 28 | #include "xfs_ialloc_btree.h" |
a844f451 NS |
29 | #include "xfs_dinode.h" |
30 | #include "xfs_inode.h" | |
31 | #include "xfs_inode_item.h" | |
1da177e4 LT |
32 | #include "xfs_btree.h" |
33 | #include "xfs_error.h" | |
34 | #include "xfs_alloc.h" | |
35 | #include "xfs_ialloc.h" | |
36 | #include "xfs_fsops.h" | |
37 | #include "xfs_itable.h" | |
1da177e4 LT |
38 | #include "xfs_trans_space.h" |
39 | #include "xfs_rtalloc.h" | |
2a82b8be | 40 | #include "xfs_filestream.h" |
0b1b213f | 41 | #include "xfs_trace.h" |
1da177e4 LT |
42 | |
43 | /* | |
44 | * File system operations | |
45 | */ | |
46 | ||
47 | int | |
48 | xfs_fs_geometry( | |
49 | xfs_mount_t *mp, | |
50 | xfs_fsop_geom_t *geo, | |
51 | int new_version) | |
52 | { | |
c4d0c3b0 DR |
53 | |
54 | memset(geo, 0, sizeof(*geo)); | |
55 | ||
1da177e4 LT |
56 | geo->blocksize = mp->m_sb.sb_blocksize; |
57 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
58 | geo->agblocks = mp->m_sb.sb_agblocks; | |
59 | geo->agcount = mp->m_sb.sb_agcount; | |
60 | geo->logblocks = mp->m_sb.sb_logblocks; | |
61 | geo->sectsize = mp->m_sb.sb_sectsize; | |
62 | geo->inodesize = mp->m_sb.sb_inodesize; | |
63 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
64 | geo->datablocks = mp->m_sb.sb_dblocks; | |
65 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
66 | geo->rtextents = mp->m_sb.sb_rextents; | |
67 | geo->logstart = mp->m_sb.sb_logstart; | |
68 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
69 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
70 | if (new_version >= 2) { | |
71 | geo->sunit = mp->m_sb.sb_unit; | |
72 | geo->swidth = mp->m_sb.sb_width; | |
73 | } | |
74 | if (new_version >= 3) { | |
75 | geo->version = XFS_FSOP_GEOM_VERSION; | |
76 | geo->flags = | |
62118709 | 77 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 78 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 79 | (xfs_sb_version_hasnlink(&mp->m_sb) ? |
1da177e4 | 80 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | |
62118709 | 81 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 82 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 83 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 84 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 85 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 86 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 87 | (xfs_sb_version_hasshared(&mp->m_sb) ? |
1da177e4 | 88 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | |
62118709 | 89 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 90 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 91 | (xfs_sb_version_hasdirv2(&mp->m_sb) ? |
1da177e4 | 92 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | |
62118709 | 93 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 94 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
95 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
96 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
97 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
98 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 99 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
100 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
101 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
102 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0); | |
62118709 | 103 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
104 | mp->m_sb.sb_logsectsize : BBSIZE; |
105 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
106 | geo->dirblocksize = mp->m_dirblksize; | |
107 | } | |
108 | if (new_version >= 4) { | |
109 | geo->flags |= | |
62118709 | 110 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
111 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
112 | geo->logsunit = mp->m_sb.sb_logsunit; | |
113 | } | |
114 | return 0; | |
115 | } | |
116 | ||
fd23683c DC |
117 | static struct xfs_buf * |
118 | xfs_growfs_get_hdr_buf( | |
119 | struct xfs_mount *mp, | |
120 | xfs_daddr_t blkno, | |
121 | size_t numblks, | |
122 | int flags) | |
123 | { | |
124 | struct xfs_buf *bp; | |
125 | ||
126 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
127 | if (!bp) | |
128 | return NULL; | |
129 | ||
130 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
131 | bp->b_bn = blkno; | |
132 | bp->b_maps[0].bm_bn = blkno; | |
133 | ||
134 | return bp; | |
135 | } | |
136 | ||
1da177e4 LT |
137 | static int |
138 | xfs_growfs_data_private( | |
139 | xfs_mount_t *mp, /* mount point for filesystem */ | |
140 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
141 | { | |
142 | xfs_agf_t *agf; | |
de497688 | 143 | struct xfs_agfl *agfl; |
1da177e4 LT |
144 | xfs_agi_t *agi; |
145 | xfs_agnumber_t agno; | |
146 | xfs_extlen_t agsize; | |
147 | xfs_extlen_t tmpsize; | |
148 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
149 | xfs_buf_t *bp; |
150 | int bucket; | |
151 | int dpct; | |
152 | int error; | |
153 | xfs_agnumber_t nagcount; | |
154 | xfs_agnumber_t nagimax = 0; | |
155 | xfs_rfsblock_t nb, nb_mod; | |
156 | xfs_rfsblock_t new; | |
157 | xfs_rfsblock_t nfree; | |
158 | xfs_agnumber_t oagcount; | |
159 | int pct; | |
1da177e4 LT |
160 | xfs_trans_t *tp; |
161 | ||
162 | nb = in->newblocks; | |
163 | pct = in->imaxpct; | |
164 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
165 | return XFS_ERROR(EINVAL); | |
4cc929ee NS |
166 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
167 | return error; | |
1da177e4 | 168 | dpct = pct - mp->m_sb.sb_imax_pct; |
e70b73f8 | 169 | bp = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 170 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
c3f8fc73 | 171 | XFS_FSS_TO_BB(mp, 1), 0, NULL); |
1922c949 DC |
172 | if (!bp) |
173 | return EIO; | |
eab4e633 DC |
174 | if (bp->b_error) { |
175 | int error = bp->b_error; | |
176 | xfs_buf_relse(bp); | |
177 | return error; | |
178 | } | |
1da177e4 LT |
179 | xfs_buf_relse(bp); |
180 | ||
181 | new = nb; /* use new as a temporary here */ | |
182 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
183 | nagcount = new + (nb_mod != 0); | |
184 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
185 | nagcount--; | |
e6da7c9f | 186 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 LT |
187 | if (nb < mp->m_sb.sb_dblocks) |
188 | return XFS_ERROR(EINVAL); | |
189 | } | |
190 | new = nb - mp->m_sb.sb_dblocks; | |
191 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 192 | |
1c1c6ebc DC |
193 | /* allocate the new per-ag structures */ |
194 | if (nagcount > oagcount) { | |
195 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
196 | if (error) | |
197 | return error; | |
1da177e4 | 198 | } |
1c1c6ebc | 199 | |
1da177e4 | 200 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
84e1e99f | 201 | tp->t_flags |= XFS_TRANS_RESERVE; |
1da177e4 LT |
202 | if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), |
203 | XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) { | |
204 | xfs_trans_cancel(tp, 0); | |
205 | return error; | |
206 | } | |
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) { | |
215 | /* | |
de497688 | 216 | * AG freespace header block |
1da177e4 | 217 | */ |
fd23683c DC |
218 | bp = xfs_growfs_get_hdr_buf(mp, |
219 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
220 | XFS_FSS_TO_BB(mp, 1), 0); | |
b522950f CS |
221 | if (!bp) { |
222 | error = ENOMEM; | |
223 | goto error0; | |
224 | } | |
fd23683c | 225 | |
1da177e4 | 226 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
227 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
228 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
229 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
230 | if (agno == nagcount - 1) |
231 | agsize = | |
232 | nb - | |
233 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
234 | else | |
235 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
236 | agf->agf_length = cpu_to_be32(agsize); |
237 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
238 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
239 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
240 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 241 | agf->agf_flfirst = 0; |
16259e7d | 242 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
243 | agf->agf_flcount = 0; |
244 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
245 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
246 | agf->agf_longest = cpu_to_be32(tmpsize); | |
c2b006c1 CH |
247 | error = xfs_bwrite(bp); |
248 | xfs_buf_relse(bp); | |
249 | if (error) | |
1da177e4 | 250 | goto error0; |
c2b006c1 | 251 | |
de497688 DC |
252 | /* |
253 | * AG freelist header block | |
254 | */ | |
255 | bp = xfs_growfs_get_hdr_buf(mp, | |
256 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
257 | XFS_FSS_TO_BB(mp, 1), 0); | |
258 | if (!bp) { | |
259 | error = ENOMEM; | |
260 | goto error0; | |
261 | } | |
262 | ||
263 | agfl = XFS_BUF_TO_AGFL(bp); | |
264 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) | |
265 | agfl->agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); | |
266 | ||
267 | error = xfs_bwrite(bp); | |
268 | xfs_buf_relse(bp); | |
269 | if (error) | |
270 | goto error0; | |
271 | ||
1da177e4 LT |
272 | /* |
273 | * AG inode header block | |
274 | */ | |
fd23683c DC |
275 | bp = xfs_growfs_get_hdr_buf(mp, |
276 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
277 | XFS_FSS_TO_BB(mp, 1), 0); | |
b522950f CS |
278 | if (!bp) { |
279 | error = ENOMEM; | |
280 | goto error0; | |
281 | } | |
fd23683c | 282 | |
1da177e4 | 283 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
284 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
285 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
286 | agi->agi_seqno = cpu_to_be32(agno); | |
287 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 288 | agi->agi_count = 0; |
16259e7d CH |
289 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
290 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 291 | agi->agi_freecount = 0; |
16259e7d CH |
292 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
293 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
1da177e4 | 294 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 295 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
c2b006c1 CH |
296 | error = xfs_bwrite(bp); |
297 | xfs_buf_relse(bp); | |
298 | if (error) | |
1da177e4 | 299 | goto error0; |
c2b006c1 | 300 | |
1da177e4 LT |
301 | /* |
302 | * BNO btree root block | |
303 | */ | |
fd23683c DC |
304 | bp = xfs_growfs_get_hdr_buf(mp, |
305 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
306 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
307 | ||
b522950f CS |
308 | if (!bp) { |
309 | error = ENOMEM; | |
310 | goto error0; | |
311 | } | |
b64f3a39 | 312 | |
fd23683c | 313 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, 0); |
b64f3a39 | 314 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
315 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
316 | arec->ar_blockcount = cpu_to_be32( | |
317 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 318 | |
c2b006c1 CH |
319 | error = xfs_bwrite(bp); |
320 | xfs_buf_relse(bp); | |
321 | if (error) | |
1da177e4 | 322 | goto error0; |
c2b006c1 | 323 | |
1da177e4 LT |
324 | /* |
325 | * CNT btree root block | |
326 | */ | |
fd23683c DC |
327 | bp = xfs_growfs_get_hdr_buf(mp, |
328 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
329 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
b522950f CS |
330 | if (!bp) { |
331 | error = ENOMEM; | |
332 | goto error0; | |
333 | } | |
b64f3a39 | 334 | |
fd23683c | 335 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, 0); |
b64f3a39 | 336 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
337 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
338 | arec->ar_blockcount = cpu_to_be32( | |
339 | agsize - be32_to_cpu(arec->ar_startblock)); | |
340 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 341 | |
c2b006c1 CH |
342 | error = xfs_bwrite(bp); |
343 | xfs_buf_relse(bp); | |
344 | if (error) | |
1da177e4 | 345 | goto error0; |
c2b006c1 | 346 | |
1da177e4 LT |
347 | /* |
348 | * INO btree root block | |
349 | */ | |
fd23683c DC |
350 | bp = xfs_growfs_get_hdr_buf(mp, |
351 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
352 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
b522950f CS |
353 | if (!bp) { |
354 | error = ENOMEM; | |
355 | goto error0; | |
356 | } | |
fd23683c | 357 | |
b64f3a39 DC |
358 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, 0); |
359 | ||
c2b006c1 CH |
360 | error = xfs_bwrite(bp); |
361 | xfs_buf_relse(bp); | |
362 | if (error) | |
1da177e4 | 363 | goto error0; |
1da177e4 LT |
364 | } |
365 | xfs_trans_agblocks_delta(tp, nfree); | |
366 | /* | |
367 | * There are new blocks in the old last a.g. | |
368 | */ | |
369 | if (new) { | |
370 | /* | |
371 | * Change the agi length. | |
372 | */ | |
373 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
374 | if (error) { | |
375 | goto error0; | |
376 | } | |
377 | ASSERT(bp); | |
378 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 379 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 380 | ASSERT(nagcount == oagcount || |
16259e7d | 381 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
382 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
383 | /* | |
384 | * Change agf length. | |
385 | */ | |
386 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
387 | if (error) { | |
388 | goto error0; | |
389 | } | |
390 | ASSERT(bp); | |
391 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 392 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
393 | ASSERT(be32_to_cpu(agf->agf_length) == |
394 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 395 | |
0164af51 | 396 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
1da177e4 LT |
397 | /* |
398 | * Free the new space. | |
399 | */ | |
400 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 401 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
402 | if (error) { |
403 | goto error0; | |
404 | } | |
405 | } | |
1c1c6ebc DC |
406 | |
407 | /* | |
408 | * Update changed superblock fields transactionally. These are not | |
409 | * seen by the rest of the world until the transaction commit applies | |
410 | * them atomically to the superblock. | |
411 | */ | |
1da177e4 LT |
412 | if (nagcount > oagcount) |
413 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
414 | if (nb > mp->m_sb.sb_dblocks) | |
415 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
416 | nb - mp->m_sb.sb_dblocks); | |
417 | if (nfree) | |
418 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
419 | if (dpct) | |
420 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
1c72bf90 | 421 | error = xfs_trans_commit(tp, 0); |
1c1c6ebc | 422 | if (error) |
1da177e4 | 423 | return error; |
1c1c6ebc | 424 | |
1da177e4 LT |
425 | /* New allocation groups fully initialized, so update mount struct */ |
426 | if (nagimax) | |
427 | mp->m_maxagi = nagimax; | |
428 | if (mp->m_sb.sb_imax_pct) { | |
429 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
430 | do_div(icount, 100); | |
431 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
432 | } else | |
433 | mp->m_maxicount = 0; | |
055388a3 | 434 | xfs_set_low_space_thresholds(mp); |
1c1c6ebc DC |
435 | |
436 | /* update secondary superblocks. */ | |
1da177e4 | 437 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
438 | error = 0; |
439 | /* | |
440 | * new secondary superblocks need to be zeroed, not read from | |
441 | * disk as the contents of the new area we are growing into is | |
442 | * completely unknown. | |
443 | */ | |
444 | if (agno < oagcount) { | |
445 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 446 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 DC |
447 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
448 | xfs_sb_read_verify); | |
1375cb65 DC |
449 | } else { |
450 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
451 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
452 | XFS_FSS_TO_BB(mp, 1), 0); | |
453 | if (bp) | |
454 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
455 | else | |
456 | error = ENOMEM; | |
457 | } | |
458 | ||
1da177e4 | 459 | if (error) { |
53487786 DC |
460 | xfs_warn(mp, |
461 | "error %d reading secondary superblock for ag %d", | |
1da177e4 LT |
462 | error, agno); |
463 | break; | |
464 | } | |
2bdf7cd0 | 465 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); |
98021821 | 466 | |
1da177e4 LT |
467 | /* |
468 | * If we get an error writing out the alternate superblocks, | |
469 | * just issue a warning and continue. The real work is | |
470 | * already done and committed. | |
471 | */ | |
c2b006c1 CH |
472 | error = xfs_bwrite(bp); |
473 | xfs_buf_relse(bp); | |
474 | if (error) { | |
53487786 | 475 | xfs_warn(mp, |
1da177e4 LT |
476 | "write error %d updating secondary superblock for ag %d", |
477 | error, agno); | |
478 | break; /* no point in continuing */ | |
479 | } | |
480 | } | |
1375cb65 | 481 | return error; |
1da177e4 LT |
482 | |
483 | error0: | |
484 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); | |
485 | return error; | |
486 | } | |
487 | ||
488 | static int | |
489 | xfs_growfs_log_private( | |
490 | xfs_mount_t *mp, /* mount point for filesystem */ | |
491 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
492 | { | |
493 | xfs_extlen_t nb; | |
494 | ||
495 | nb = in->newblocks; | |
496 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
497 | return XFS_ERROR(EINVAL); | |
498 | if (nb == mp->m_sb.sb_logblocks && | |
499 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
500 | return XFS_ERROR(EINVAL); | |
501 | /* | |
502 | * Moving the log is hard, need new interfaces to sync | |
503 | * the log first, hold off all activity while moving it. | |
504 | * Can have shorter or longer log in the same space, | |
505 | * or transform internal to external log or vice versa. | |
506 | */ | |
507 | return XFS_ERROR(ENOSYS); | |
508 | } | |
509 | ||
510 | /* | |
511 | * protected versions of growfs function acquire and release locks on the mount | |
512 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
513 | * XFS_IOC_FSGROWFSRT | |
514 | */ | |
515 | ||
516 | ||
517 | int | |
518 | xfs_growfs_data( | |
519 | xfs_mount_t *mp, | |
520 | xfs_growfs_data_t *in) | |
521 | { | |
522 | int error; | |
743bb465 | 523 | |
524 | if (!capable(CAP_SYS_ADMIN)) | |
525 | return XFS_ERROR(EPERM); | |
cc92e7ac | 526 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
527 | return XFS_ERROR(EWOULDBLOCK); |
528 | error = xfs_growfs_data_private(mp, in); | |
cc92e7ac | 529 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
530 | return error; |
531 | } | |
532 | ||
533 | int | |
534 | xfs_growfs_log( | |
535 | xfs_mount_t *mp, | |
536 | xfs_growfs_log_t *in) | |
537 | { | |
538 | int error; | |
743bb465 | 539 | |
540 | if (!capable(CAP_SYS_ADMIN)) | |
541 | return XFS_ERROR(EPERM); | |
cc92e7ac | 542 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
543 | return XFS_ERROR(EWOULDBLOCK); |
544 | error = xfs_growfs_log_private(mp, in); | |
cc92e7ac | 545 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
546 | return error; |
547 | } | |
548 | ||
549 | /* | |
550 | * exported through ioctl XFS_IOC_FSCOUNTS | |
551 | */ | |
552 | ||
553 | int | |
554 | xfs_fs_counts( | |
555 | xfs_mount_t *mp, | |
556 | xfs_fsop_counts_t *cnt) | |
557 | { | |
d4d90b57 | 558 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
3685c2a1 | 559 | spin_lock(&mp->m_sb_lock); |
4be536de | 560 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
1da177e4 LT |
561 | cnt->freertx = mp->m_sb.sb_frextents; |
562 | cnt->freeino = mp->m_sb.sb_ifree; | |
563 | cnt->allocino = mp->m_sb.sb_icount; | |
3685c2a1 | 564 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
565 | return 0; |
566 | } | |
567 | ||
568 | /* | |
569 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
570 | * | |
571 | * xfs_reserve_blocks is called to set m_resblks | |
572 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 573 | * is kept in m_resblks_avail. |
1da177e4 LT |
574 | * |
575 | * Reserve the requested number of blocks if available. Otherwise return | |
576 | * as many as possible to satisfy the request. The actual number | |
577 | * reserved are returned in outval | |
578 | * | |
579 | * A null inval pointer indicates that only the current reserved blocks | |
580 | * available should be returned no settings are changed. | |
581 | */ | |
582 | ||
583 | int | |
584 | xfs_reserve_blocks( | |
585 | xfs_mount_t *mp, | |
586 | __uint64_t *inval, | |
587 | xfs_fsop_resblks_t *outval) | |
588 | { | |
dbcabad1 | 589 | __int64_t lcounter, delta, fdblks_delta; |
1da177e4 | 590 | __uint64_t request; |
1da177e4 LT |
591 | |
592 | /* If inval is null, report current values and return */ | |
1da177e4 | 593 | if (inval == (__uint64_t *)NULL) { |
84e1e99f DC |
594 | if (!outval) |
595 | return EINVAL; | |
1da177e4 LT |
596 | outval->resblks = mp->m_resblks; |
597 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 598 | return 0; |
1da177e4 LT |
599 | } |
600 | ||
601 | request = *inval; | |
dbcabad1 DC |
602 | |
603 | /* | |
604 | * With per-cpu counters, this becomes an interesting | |
605 | * problem. we needto work out if we are freeing or allocation | |
606 | * blocks first, then we can do the modification as necessary. | |
607 | * | |
3685c2a1 | 608 | * We do this under the m_sb_lock so that if we are near |
dbcabad1 DC |
609 | * ENOSPC, we will hold out any changes while we work out |
610 | * what to do. This means that the amount of free space can | |
611 | * change while we do this, so we need to retry if we end up | |
612 | * trying to reserve more space than is available. | |
613 | * | |
614 | * We also use the xfs_mod_incore_sb() interface so that we | |
615 | * don't have to care about whether per cpu counter are | |
616 | * enabled, disabled or even compiled in.... | |
617 | */ | |
618 | retry: | |
3685c2a1 | 619 | spin_lock(&mp->m_sb_lock); |
d4d90b57 | 620 | xfs_icsb_sync_counters_locked(mp, 0); |
1da177e4 LT |
621 | |
622 | /* | |
623 | * If our previous reservation was larger than the current value, | |
624 | * then move any unused blocks back to the free pool. | |
625 | */ | |
dbcabad1 | 626 | fdblks_delta = 0; |
1da177e4 LT |
627 | if (mp->m_resblks > request) { |
628 | lcounter = mp->m_resblks_avail - request; | |
629 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 630 | fdblks_delta = lcounter; |
1da177e4 LT |
631 | mp->m_resblks_avail -= lcounter; |
632 | } | |
633 | mp->m_resblks = request; | |
634 | } else { | |
4be536de DC |
635 | __int64_t free; |
636 | ||
637 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
dbcabad1 DC |
638 | if (!free) |
639 | goto out; /* ENOSPC and fdblks_delta = 0 */ | |
640 | ||
1da177e4 | 641 | delta = request - mp->m_resblks; |
4be536de | 642 | lcounter = free - delta; |
1da177e4 LT |
643 | if (lcounter < 0) { |
644 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
645 | mp->m_resblks += free; |
646 | mp->m_resblks_avail += free; | |
dbcabad1 | 647 | fdblks_delta = -free; |
1da177e4 | 648 | } else { |
dbcabad1 | 649 | fdblks_delta = -delta; |
1da177e4 LT |
650 | mp->m_resblks = request; |
651 | mp->m_resblks_avail += delta; | |
652 | } | |
653 | } | |
dbcabad1 | 654 | out: |
84e1e99f DC |
655 | if (outval) { |
656 | outval->resblks = mp->m_resblks; | |
657 | outval->resblks_avail = mp->m_resblks_avail; | |
658 | } | |
3685c2a1 | 659 | spin_unlock(&mp->m_sb_lock); |
dbcabad1 DC |
660 | |
661 | if (fdblks_delta) { | |
662 | /* | |
663 | * If we are putting blocks back here, m_resblks_avail is | |
9da096fd | 664 | * already at its max so this will put it in the free pool. |
dbcabad1 DC |
665 | * |
666 | * If we need space, we'll either succeed in getting it | |
667 | * from the free block count or we'll get an enospc. If | |
668 | * we get a ENOSPC, it means things changed while we were | |
669 | * calculating fdblks_delta and so we should try again to | |
670 | * see if there is anything left to reserve. | |
671 | * | |
672 | * Don't set the reserved flag here - we don't want to reserve | |
673 | * the extra reserve blocks from the reserve..... | |
674 | */ | |
675 | int error; | |
96540c78 CH |
676 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, |
677 | fdblks_delta, 0); | |
dbcabad1 DC |
678 | if (error == ENOSPC) |
679 | goto retry; | |
680 | } | |
014c2544 | 681 | return 0; |
1da177e4 LT |
682 | } |
683 | ||
1a387d3b DC |
684 | /* |
685 | * Dump a transaction into the log that contains no real change. This is needed | |
686 | * to be able to make the log dirty or stamp the current tail LSN into the log | |
687 | * during the covering operation. | |
688 | * | |
689 | * We cannot use an inode here for this - that will push dirty state back up | |
690 | * into the VFS and then periodic inode flushing will prevent log covering from | |
c58efdb4 DC |
691 | * making progress. Hence we log a field in the superblock instead and use a |
692 | * synchronous transaction to ensure the superblock is immediately unpinned | |
693 | * and can be written back. | |
1a387d3b | 694 | */ |
c4be0c1d | 695 | int |
421ad134 | 696 | xfs_fs_log_dummy( |
c58efdb4 | 697 | xfs_mount_t *mp) |
e13a73f0 | 698 | { |
421ad134 | 699 | xfs_trans_t *tp; |
c4be0c1d | 700 | int error; |
e13a73f0 | 701 | |
80641dc6 | 702 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); |
1a387d3b DC |
703 | error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0, |
704 | XFS_DEFAULT_LOG_COUNT); | |
c4be0c1d | 705 | if (error) { |
e13a73f0 | 706 | xfs_trans_cancel(tp, 0); |
c4be0c1d | 707 | return error; |
e13a73f0 CH |
708 | } |
709 | ||
1a387d3b DC |
710 | /* log the UUID because it is an unchanging field */ |
711 | xfs_mod_sb(tp, XFS_SB_UUID); | |
c58efdb4 | 712 | xfs_trans_set_sync(tp); |
1a387d3b | 713 | return xfs_trans_commit(tp, 0); |
e13a73f0 CH |
714 | } |
715 | ||
1da177e4 LT |
716 | int |
717 | xfs_fs_goingdown( | |
718 | xfs_mount_t *mp, | |
719 | __uint32_t inflags) | |
720 | { | |
721 | switch (inflags) { | |
722 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 723 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 724 | |
f33c6797 | 725 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 726 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
727 | thaw_bdev(sb->s_bdev, sb); |
728 | } | |
189f4bf2 | 729 | |
1da177e4 LT |
730 | break; |
731 | } | |
732 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 733 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
734 | break; |
735 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
736 | xfs_force_shutdown(mp, |
737 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
738 | break; |
739 | default: | |
740 | return XFS_ERROR(EINVAL); | |
741 | } | |
742 | ||
743 | return 0; | |
744 | } | |
2af51f3a DC |
745 | |
746 | /* | |
747 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
748 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
749 | * that absolutely nothing persistent happens to this filesystem after this | |
750 | * point. | |
751 | */ | |
752 | void | |
753 | xfs_do_force_shutdown( | |
754 | xfs_mount_t *mp, | |
755 | int flags, | |
756 | char *fname, | |
757 | int lnnum) | |
758 | { | |
759 | int logerror; | |
760 | ||
761 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
762 | ||
763 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
764 | xfs_notice(mp, | |
765 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
766 | __func__, flags, lnnum, fname, __return_address); | |
767 | } | |
768 | /* | |
769 | * No need to duplicate efforts. | |
770 | */ | |
771 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
772 | return; | |
773 | ||
774 | /* | |
775 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
776 | * queue up anybody new on the log reservations, and wakes up | |
777 | * everybody who's sleeping on log reservations to tell them | |
778 | * the bad news. | |
779 | */ | |
780 | if (xfs_log_force_umount(mp, logerror)) | |
781 | return; | |
782 | ||
783 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
784 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
785 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
786 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
787 | xfs_stack_trace(); | |
788 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
789 | if (logerror) { | |
790 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
791 | "Log I/O Error Detected. Shutting down filesystem"); | |
792 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
793 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
794 | "All device paths lost. Shutting down filesystem"); | |
795 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
796 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
797 | "I/O Error Detected. Shutting down filesystem"); | |
798 | } | |
799 | } | |
800 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
801 | xfs_alert(mp, | |
802 | "Please umount the filesystem and rectify the problem(s)"); | |
803 | } | |
804 | } |