Commit | Line | Data |
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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
a844f451 | 7 | #include "xfs_fs.h" |
70a9883c | 8 | #include "xfs_shared.h" |
239880ef | 9 | #include "xfs_format.h" |
a4fbe6ab | 10 | #include "xfs_log_format.h" |
239880ef | 11 | #include "xfs_trans_resv.h" |
1da177e4 | 12 | #include "xfs_sb.h" |
1da177e4 | 13 | #include "xfs_mount.h" |
3ab78df2 | 14 | #include "xfs_defer.h" |
239880ef | 15 | #include "xfs_trans.h" |
1da177e4 | 16 | #include "xfs_error.h" |
a4fbe6ab | 17 | #include "xfs_btree.h" |
1da177e4 | 18 | #include "xfs_alloc.h" |
1da177e4 | 19 | #include "xfs_fsops.h" |
1da177e4 LT |
20 | #include "xfs_trans_space.h" |
21 | #include "xfs_rtalloc.h" | |
0b1b213f | 22 | #include "xfs_trace.h" |
239880ef | 23 | #include "xfs_log.h" |
b16817b6 | 24 | #include "xfs_ag.h" |
84d69619 | 25 | #include "xfs_ag_resv.h" |
1da177e4 LT |
26 | |
27 | /* | |
b16817b6 | 28 | * growfs operations |
1da177e4 | 29 | */ |
1da177e4 LT |
30 | static int |
31 | xfs_growfs_data_private( | |
32 | xfs_mount_t *mp, /* mount point for filesystem */ | |
33 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
34 | { | |
1da177e4 | 35 | xfs_buf_t *bp; |
83a7f86e | 36 | int error; |
1da177e4 LT |
37 | xfs_agnumber_t nagcount; |
38 | xfs_agnumber_t nagimax = 0; | |
39 | xfs_rfsblock_t nb, nb_mod; | |
40 | xfs_rfsblock_t new; | |
1da177e4 | 41 | xfs_agnumber_t oagcount; |
1da177e4 | 42 | xfs_trans_t *tp; |
9aebe805 | 43 | LIST_HEAD (buffer_list); |
0410c3bb | 44 | struct aghdr_init_data id = {}; |
1da177e4 LT |
45 | |
46 | nb = in->newblocks; | |
87444b8c | 47 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 48 | return -EINVAL; |
4cc929ee NS |
49 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
50 | return error; | |
ba372674 | 51 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 52 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
53 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
54 | if (error) | |
eab4e633 | 55 | return error; |
1da177e4 LT |
56 | xfs_buf_relse(bp); |
57 | ||
58 | new = nb; /* use new as a temporary here */ | |
59 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
60 | nagcount = new + (nb_mod != 0); | |
61 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
62 | nagcount--; | |
e6da7c9f | 63 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 64 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 65 | return -EINVAL; |
1da177e4 LT |
66 | } |
67 | new = nb - mp->m_sb.sb_dblocks; | |
68 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 69 | |
1c1c6ebc DC |
70 | /* allocate the new per-ag structures */ |
71 | if (nagcount > oagcount) { | |
72 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
73 | if (error) | |
74 | return error; | |
1da177e4 | 75 | } |
1c1c6ebc | 76 | |
253f4911 CH |
77 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, |
78 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
79 | if (error) | |
1da177e4 | 80 | return error; |
1da177e4 | 81 | |
1c1c6ebc | 82 | /* |
9aebe805 DC |
83 | * Write new AG headers to disk. Non-transactional, but need to be |
84 | * written and completed prior to the growfs transaction being logged. | |
85 | * To do this, we use a delayed write buffer list and wait for | |
86 | * submission and IO completion of the list as a whole. This allows the | |
87 | * IO subsystem to merge all the AG headers in a single AG into a single | |
88 | * IO and hide most of the latency of the IO from us. | |
89 | * | |
90 | * This also means that if we get an error whilst building the buffer | |
91 | * list to write, we can cancel the entire list without having written | |
92 | * anything. | |
1c1c6ebc | 93 | */ |
0410c3bb DC |
94 | INIT_LIST_HEAD(&id.buffer_list); |
95 | for (id.agno = nagcount - 1; | |
96 | id.agno >= oagcount; | |
97 | id.agno--, new -= id.agsize) { | |
98 | ||
99 | if (id.agno == nagcount - 1) | |
100 | id.agsize = nb - | |
101 | (id.agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
1da177e4 | 102 | else |
0410c3bb | 103 | id.agsize = mp->m_sb.sb_agblocks; |
b64f3a39 | 104 | |
b16817b6 | 105 | error = xfs_ag_init_headers(mp, &id); |
9aebe805 | 106 | if (error) { |
0410c3bb | 107 | xfs_buf_delwri_cancel(&id.buffer_list); |
83a7f86e | 108 | goto out_trans_cancel; |
9aebe805 | 109 | } |
1da177e4 | 110 | } |
0410c3bb | 111 | error = xfs_buf_delwri_submit(&id.buffer_list); |
9aebe805 | 112 | if (error) |
83a7f86e | 113 | goto out_trans_cancel; |
9aebe805 | 114 | |
0410c3bb | 115 | xfs_trans_agblocks_delta(tp, id.nfree); |
cce77bcf | 116 | |
49dd56f2 | 117 | /* If there are new blocks in the old last AG, extend it. */ |
1da177e4 | 118 | if (new) { |
49dd56f2 | 119 | error = xfs_ag_extend_space(mp, tp, &id, new); |
340785cc | 120 | if (error) |
83a7f86e | 121 | goto out_trans_cancel; |
1da177e4 | 122 | } |
1c1c6ebc DC |
123 | |
124 | /* | |
125 | * Update changed superblock fields transactionally. These are not | |
126 | * seen by the rest of the world until the transaction commit applies | |
127 | * them atomically to the superblock. | |
128 | */ | |
1da177e4 LT |
129 | if (nagcount > oagcount) |
130 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
131 | if (nb > mp->m_sb.sb_dblocks) | |
132 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
133 | nb - mp->m_sb.sb_dblocks); | |
0410c3bb DC |
134 | if (id.nfree) |
135 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, id.nfree); | |
f8079b85 | 136 | xfs_trans_set_sync(tp); |
70393313 | 137 | error = xfs_trans_commit(tp); |
1c1c6ebc | 138 | if (error) |
1da177e4 | 139 | return error; |
1c1c6ebc | 140 | |
1da177e4 LT |
141 | /* New allocation groups fully initialized, so update mount struct */ |
142 | if (nagimax) | |
143 | mp->m_maxagi = nagimax; | |
055388a3 | 144 | xfs_set_low_space_thresholds(mp); |
52548852 | 145 | mp->m_alloc_set_aside = xfs_alloc_set_aside(mp); |
1c1c6ebc | 146 | |
20e73b00 DW |
147 | /* |
148 | * If we expanded the last AG, free the per-AG reservation | |
149 | * so we can reinitialize it with the new size. | |
150 | */ | |
151 | if (new) { | |
152 | struct xfs_perag *pag; | |
153 | ||
0410c3bb | 154 | pag = xfs_perag_get(mp, id.agno); |
20e73b00 DW |
155 | error = xfs_ag_resv_free(pag); |
156 | xfs_perag_put(pag); | |
157 | if (error) | |
83a7f86e | 158 | return error; |
20e73b00 DW |
159 | } |
160 | ||
83a7f86e DC |
161 | /* |
162 | * Reserve AG metadata blocks. ENOSPC here does not mean there was a | |
163 | * growfs failure, just that there still isn't space for new user data | |
164 | * after the grow has been run. | |
165 | */ | |
84d69619 | 166 | error = xfs_fs_reserve_ag_blocks(mp); |
83a7f86e DC |
167 | if (error == -ENOSPC) |
168 | error = 0; | |
169 | return error; | |
170 | ||
171 | out_trans_cancel: | |
172 | xfs_trans_cancel(tp); | |
173 | return error; | |
174 | } | |
175 | ||
176 | static int | |
177 | xfs_growfs_log_private( | |
178 | xfs_mount_t *mp, /* mount point for filesystem */ | |
179 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
180 | { | |
181 | xfs_extlen_t nb; | |
182 | ||
183 | nb = in->newblocks; | |
184 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
185 | return -EINVAL; | |
186 | if (nb == mp->m_sb.sb_logblocks && | |
187 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
188 | return -EINVAL; | |
189 | /* | |
190 | * Moving the log is hard, need new interfaces to sync | |
191 | * the log first, hold off all activity while moving it. | |
192 | * Can have shorter or longer log in the same space, | |
193 | * or transform internal to external log or vice versa. | |
194 | */ | |
195 | return -ENOSYS; | |
196 | } | |
197 | ||
198 | static int | |
199 | xfs_growfs_imaxpct( | |
200 | struct xfs_mount *mp, | |
201 | __u32 imaxpct) | |
202 | { | |
203 | struct xfs_trans *tp; | |
204 | int dpct; | |
205 | int error; | |
206 | ||
207 | if (imaxpct > 100) | |
208 | return -EINVAL; | |
209 | ||
210 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata, | |
211 | XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp); | |
212 | if (error) | |
213 | return error; | |
214 | ||
215 | dpct = imaxpct - mp->m_sb.sb_imax_pct; | |
216 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
217 | xfs_trans_set_sync(tp); | |
218 | return xfs_trans_commit(tp); | |
219 | } | |
220 | ||
1da177e4 LT |
221 | /* |
222 | * protected versions of growfs function acquire and release locks on the mount | |
223 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
224 | * XFS_IOC_FSGROWFSRT | |
225 | */ | |
1da177e4 LT |
226 | int |
227 | xfs_growfs_data( | |
87444b8c DC |
228 | struct xfs_mount *mp, |
229 | struct xfs_growfs_data *in) | |
1da177e4 | 230 | { |
87444b8c | 231 | int error = 0; |
743bb465 | 232 | |
233 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 234 | return -EPERM; |
cc92e7ac | 235 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 236 | return -EWOULDBLOCK; |
87444b8c DC |
237 | |
238 | /* update imaxpct separately to the physical grow of the filesystem */ | |
239 | if (in->imaxpct != mp->m_sb.sb_imax_pct) { | |
240 | error = xfs_growfs_imaxpct(mp, in->imaxpct); | |
241 | if (error) | |
242 | goto out_error; | |
243 | } | |
244 | ||
245 | if (in->newblocks != mp->m_sb.sb_dblocks) { | |
246 | error = xfs_growfs_data_private(mp, in); | |
247 | if (error) | |
248 | goto out_error; | |
249 | } | |
250 | ||
251 | /* Post growfs calculations needed to reflect new state in operations */ | |
252 | if (mp->m_sb.sb_imax_pct) { | |
253 | uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
254 | do_div(icount, 100); | |
255 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
256 | } else | |
257 | mp->m_maxicount = 0; | |
258 | ||
83a7f86e | 259 | /* Update secondary superblocks now the physical grow has completed */ |
b16817b6 | 260 | error = xfs_update_secondary_sbs(mp); |
83a7f86e | 261 | |
87444b8c | 262 | out_error: |
52785112 CH |
263 | /* |
264 | * Increment the generation unconditionally, the error could be from | |
265 | * updating the secondary superblocks, in which case the new size | |
266 | * is live already. | |
267 | */ | |
268 | mp->m_generation++; | |
cc92e7ac | 269 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
270 | return error; |
271 | } | |
272 | ||
273 | int | |
274 | xfs_growfs_log( | |
275 | xfs_mount_t *mp, | |
276 | xfs_growfs_log_t *in) | |
277 | { | |
278 | int error; | |
743bb465 | 279 | |
280 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 281 | return -EPERM; |
cc92e7ac | 282 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 283 | return -EWOULDBLOCK; |
1da177e4 | 284 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 285 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
286 | return error; |
287 | } | |
288 | ||
289 | /* | |
290 | * exported through ioctl XFS_IOC_FSCOUNTS | |
291 | */ | |
292 | ||
293 | int | |
294 | xfs_fs_counts( | |
295 | xfs_mount_t *mp, | |
296 | xfs_fsop_counts_t *cnt) | |
297 | { | |
501ab323 | 298 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 299 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada | 300 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
52548852 | 301 | mp->m_alloc_set_aside; |
501ab323 | 302 | |
3685c2a1 | 303 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 304 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 305 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
306 | return 0; |
307 | } | |
308 | ||
309 | /* | |
310 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
311 | * | |
312 | * xfs_reserve_blocks is called to set m_resblks | |
313 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 314 | * is kept in m_resblks_avail. |
1da177e4 LT |
315 | * |
316 | * Reserve the requested number of blocks if available. Otherwise return | |
317 | * as many as possible to satisfy the request. The actual number | |
318 | * reserved are returned in outval | |
319 | * | |
320 | * A null inval pointer indicates that only the current reserved blocks | |
321 | * available should be returned no settings are changed. | |
322 | */ | |
323 | ||
324 | int | |
325 | xfs_reserve_blocks( | |
326 | xfs_mount_t *mp, | |
c8ce540d | 327 | uint64_t *inval, |
1da177e4 LT |
328 | xfs_fsop_resblks_t *outval) |
329 | { | |
c8ce540d DW |
330 | int64_t lcounter, delta; |
331 | int64_t fdblks_delta = 0; | |
332 | uint64_t request; | |
333 | int64_t free; | |
408fd484 | 334 | int error = 0; |
1da177e4 LT |
335 | |
336 | /* If inval is null, report current values and return */ | |
c8ce540d | 337 | if (inval == (uint64_t *)NULL) { |
84e1e99f | 338 | if (!outval) |
2451337d | 339 | return -EINVAL; |
1da177e4 LT |
340 | outval->resblks = mp->m_resblks; |
341 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 342 | return 0; |
1da177e4 LT |
343 | } |
344 | ||
345 | request = *inval; | |
dbcabad1 DC |
346 | |
347 | /* | |
408fd484 BF |
348 | * With per-cpu counters, this becomes an interesting problem. we need |
349 | * to work out if we are freeing or allocation blocks first, then we can | |
350 | * do the modification as necessary. | |
dbcabad1 | 351 | * |
408fd484 BF |
352 | * We do this under the m_sb_lock so that if we are near ENOSPC, we will |
353 | * hold out any changes while we work out what to do. This means that | |
354 | * the amount of free space can change while we do this, so we need to | |
355 | * retry if we end up trying to reserve more space than is available. | |
dbcabad1 | 356 | */ |
3685c2a1 | 357 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
358 | |
359 | /* | |
360 | * If our previous reservation was larger than the current value, | |
408fd484 BF |
361 | * then move any unused blocks back to the free pool. Modify the resblks |
362 | * counters directly since we shouldn't have any problems unreserving | |
363 | * space. | |
1da177e4 | 364 | */ |
1da177e4 LT |
365 | if (mp->m_resblks > request) { |
366 | lcounter = mp->m_resblks_avail - request; | |
367 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 368 | fdblks_delta = lcounter; |
1da177e4 LT |
369 | mp->m_resblks_avail -= lcounter; |
370 | } | |
371 | mp->m_resblks = request; | |
408fd484 BF |
372 | if (fdblks_delta) { |
373 | spin_unlock(&mp->m_sb_lock); | |
374 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); | |
375 | spin_lock(&mp->m_sb_lock); | |
376 | } | |
377 | ||
378 | goto out; | |
379 | } | |
4be536de | 380 | |
408fd484 BF |
381 | /* |
382 | * If the request is larger than the current reservation, reserve the | |
383 | * blocks before we update the reserve counters. Sample m_fdblocks and | |
384 | * perform a partial reservation if the request exceeds free space. | |
385 | */ | |
386 | error = -ENOSPC; | |
387 | do { | |
0d485ada | 388 | free = percpu_counter_sum(&mp->m_fdblocks) - |
52548852 | 389 | mp->m_alloc_set_aside; |
dbcabad1 | 390 | if (!free) |
408fd484 | 391 | break; |
dbcabad1 | 392 | |
1da177e4 | 393 | delta = request - mp->m_resblks; |
4be536de | 394 | lcounter = free - delta; |
408fd484 | 395 | if (lcounter < 0) |
1da177e4 | 396 | /* We can't satisfy the request, just get what we can */ |
408fd484 BF |
397 | fdblks_delta = free; |
398 | else | |
399 | fdblks_delta = delta; | |
dbcabad1 | 400 | |
dbcabad1 | 401 | /* |
408fd484 BF |
402 | * We'll either succeed in getting space from the free block |
403 | * count or we'll get an ENOSPC. If we get a ENOSPC, it means | |
404 | * things changed while we were calculating fdblks_delta and so | |
405 | * we should try again to see if there is anything left to | |
406 | * reserve. | |
dbcabad1 DC |
407 | * |
408 | * Don't set the reserved flag here - we don't want to reserve | |
409 | * the extra reserve blocks from the reserve..... | |
410 | */ | |
408fd484 BF |
411 | spin_unlock(&mp->m_sb_lock); |
412 | error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); | |
413 | spin_lock(&mp->m_sb_lock); | |
414 | } while (error == -ENOSPC); | |
415 | ||
416 | /* | |
417 | * Update the reserve counters if blocks have been successfully | |
418 | * allocated. | |
419 | */ | |
420 | if (!error && fdblks_delta) { | |
421 | mp->m_resblks += fdblks_delta; | |
422 | mp->m_resblks_avail += fdblks_delta; | |
dbcabad1 | 423 | } |
408fd484 BF |
424 | |
425 | out: | |
426 | if (outval) { | |
427 | outval->resblks = mp->m_resblks; | |
428 | outval->resblks_avail = mp->m_resblks_avail; | |
429 | } | |
430 | ||
431 | spin_unlock(&mp->m_sb_lock); | |
432 | return error; | |
1da177e4 LT |
433 | } |
434 | ||
1da177e4 LT |
435 | int |
436 | xfs_fs_goingdown( | |
437 | xfs_mount_t *mp, | |
c8ce540d | 438 | uint32_t inflags) |
1da177e4 LT |
439 | { |
440 | switch (inflags) { | |
441 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 442 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 443 | |
f33c6797 | 444 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 445 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
446 | thaw_bdev(sb->s_bdev, sb); |
447 | } | |
189f4bf2 | 448 | |
1da177e4 LT |
449 | break; |
450 | } | |
451 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 452 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
453 | break; |
454 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
455 | xfs_force_shutdown(mp, |
456 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
457 | break; |
458 | default: | |
2451337d | 459 | return -EINVAL; |
1da177e4 LT |
460 | } |
461 | ||
462 | return 0; | |
463 | } | |
2af51f3a DC |
464 | |
465 | /* | |
466 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
467 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
468 | * that absolutely nothing persistent happens to this filesystem after this | |
469 | * point. | |
470 | */ | |
471 | void | |
472 | xfs_do_force_shutdown( | |
473 | xfs_mount_t *mp, | |
474 | int flags, | |
475 | char *fname, | |
476 | int lnnum) | |
477 | { | |
478 | int logerror; | |
479 | ||
480 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
481 | ||
482 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
483 | xfs_notice(mp, | |
c9690043 | 484 | "%s(0x%x) called from line %d of file %s. Return address = "PTR_FMT, |
2af51f3a DC |
485 | __func__, flags, lnnum, fname, __return_address); |
486 | } | |
487 | /* | |
488 | * No need to duplicate efforts. | |
489 | */ | |
490 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
491 | return; | |
492 | ||
493 | /* | |
494 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
495 | * queue up anybody new on the log reservations, and wakes up | |
496 | * everybody who's sleeping on log reservations to tell them | |
497 | * the bad news. | |
498 | */ | |
499 | if (xfs_log_force_umount(mp, logerror)) | |
500 | return; | |
501 | ||
502 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
503 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
504 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
505 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
506 | xfs_stack_trace(); | |
507 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
508 | if (logerror) { | |
509 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
510 | "Log I/O Error Detected. Shutting down filesystem"); | |
511 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
512 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
513 | "All device paths lost. Shutting down filesystem"); | |
514 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
515 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
516 | "I/O Error Detected. Shutting down filesystem"); | |
517 | } | |
518 | } | |
519 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
520 | xfs_alert(mp, | |
521 | "Please umount the filesystem and rectify the problem(s)"); | |
522 | } | |
523 | } | |
84d69619 DW |
524 | |
525 | /* | |
526 | * Reserve free space for per-AG metadata. | |
527 | */ | |
528 | int | |
529 | xfs_fs_reserve_ag_blocks( | |
530 | struct xfs_mount *mp) | |
531 | { | |
532 | xfs_agnumber_t agno; | |
533 | struct xfs_perag *pag; | |
534 | int error = 0; | |
535 | int err2; | |
536 | ||
537 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
538 | pag = xfs_perag_get(mp, agno); | |
539 | err2 = xfs_ag_resv_init(pag); | |
540 | xfs_perag_put(pag); | |
541 | if (err2 && !error) | |
542 | error = err2; | |
543 | } | |
544 | ||
545 | if (error && error != -ENOSPC) { | |
546 | xfs_warn(mp, | |
547 | "Error %d reserving per-AG metadata reserve pool.", error); | |
548 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
549 | } | |
550 | ||
551 | return error; | |
552 | } | |
553 | ||
554 | /* | |
555 | * Free space reserved for per-AG metadata. | |
556 | */ | |
557 | int | |
558 | xfs_fs_unreserve_ag_blocks( | |
559 | struct xfs_mount *mp) | |
560 | { | |
561 | xfs_agnumber_t agno; | |
562 | struct xfs_perag *pag; | |
563 | int error = 0; | |
564 | int err2; | |
565 | ||
566 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
567 | pag = xfs_perag_get(mp, agno); | |
568 | err2 = xfs_ag_resv_free(pag); | |
569 | xfs_perag_put(pag); | |
570 | if (err2 && !error) | |
571 | error = err2; | |
572 | } | |
573 | ||
574 | if (error) | |
575 | xfs_warn(mp, | |
576 | "Error %d freeing per-AG metadata reserve pool.", error); | |
577 | ||
578 | return error; | |
579 | } |