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6772c1f1 DW |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* | |
3 | * Copyright (C) 2019 Oracle. All Rights Reserved. | |
4 | * Author: Darrick J. Wong <darrick.wong@oracle.com> | |
5 | */ | |
6 | #include "xfs.h" | |
7 | #include "xfs_fs.h" | |
8 | #include "xfs_shared.h" | |
9 | #include "xfs_format.h" | |
10 | #include "xfs_log_format.h" | |
11 | #include "xfs_trans_resv.h" | |
6772c1f1 DW |
12 | #include "xfs_sb.h" |
13 | #include "xfs_mount.h" | |
6772c1f1 DW |
14 | #include "xfs_inode.h" |
15 | #include "xfs_trace.h" | |
16 | #include "xfs_health.h" | |
17 | ||
519841c2 DW |
18 | /* |
19 | * Warn about metadata corruption that we detected but haven't fixed, and | |
20 | * make sure we're not sitting on anything that would get in the way of | |
21 | * recovery. | |
22 | */ | |
23 | void | |
24 | xfs_health_unmount( | |
25 | struct xfs_mount *mp) | |
26 | { | |
27 | struct xfs_perag *pag; | |
28 | xfs_agnumber_t agno; | |
29 | unsigned int sick = 0; | |
30 | unsigned int checked = 0; | |
31 | bool warn = false; | |
32 | ||
33 | if (XFS_FORCED_SHUTDOWN(mp)) | |
34 | return; | |
35 | ||
36 | /* Measure AG corruption levels. */ | |
37 | for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { | |
38 | pag = xfs_perag_get(mp, agno); | |
39 | xfs_ag_measure_sickness(pag, &sick, &checked); | |
40 | if (sick) { | |
41 | trace_xfs_ag_unfixed_corruption(mp, agno, sick); | |
42 | warn = true; | |
43 | } | |
44 | xfs_perag_put(pag); | |
45 | } | |
46 | ||
47 | /* Measure realtime volume corruption levels. */ | |
48 | xfs_rt_measure_sickness(mp, &sick, &checked); | |
49 | if (sick) { | |
50 | trace_xfs_rt_unfixed_corruption(mp, sick); | |
51 | warn = true; | |
52 | } | |
53 | ||
54 | /* | |
55 | * Measure fs corruption and keep the sample around for the warning. | |
56 | * See the note below for why we exempt FS_COUNTERS. | |
57 | */ | |
58 | xfs_fs_measure_sickness(mp, &sick, &checked); | |
59 | if (sick & ~XFS_SICK_FS_COUNTERS) { | |
60 | trace_xfs_fs_unfixed_corruption(mp, sick); | |
61 | warn = true; | |
62 | } | |
63 | ||
64 | if (warn) { | |
65 | xfs_warn(mp, | |
66 | "Uncorrected metadata errors detected; please run xfs_repair."); | |
67 | ||
68 | /* | |
69 | * We discovered uncorrected metadata problems at some point | |
70 | * during this filesystem mount and have advised the | |
71 | * administrator to run repair once the unmount completes. | |
72 | * | |
73 | * However, we must be careful -- when FSCOUNTERS are flagged | |
74 | * unhealthy, the unmount procedure omits writing the clean | |
75 | * unmount record to the log so that the next mount will run | |
76 | * recovery and recompute the summary counters. In other | |
77 | * words, we leave a dirty log to get the counters fixed. | |
78 | * | |
79 | * Unfortunately, xfs_repair cannot recover dirty logs, so if | |
80 | * there were filesystem problems, FSCOUNTERS was flagged, and | |
81 | * the administrator takes our advice to run xfs_repair, | |
82 | * they'll have to zap the log before repairing structures. | |
83 | * We don't really want to encourage this, so we mark the | |
84 | * FSCOUNTERS healthy so that a subsequent repair run won't see | |
85 | * a dirty log. | |
86 | */ | |
87 | if (sick & XFS_SICK_FS_COUNTERS) | |
88 | xfs_fs_mark_healthy(mp, XFS_SICK_FS_COUNTERS); | |
89 | } | |
90 | } | |
91 | ||
6772c1f1 DW |
92 | /* Mark unhealthy per-fs metadata. */ |
93 | void | |
94 | xfs_fs_mark_sick( | |
95 | struct xfs_mount *mp, | |
96 | unsigned int mask) | |
97 | { | |
98 | ASSERT(!(mask & ~XFS_SICK_FS_PRIMARY)); | |
99 | trace_xfs_fs_mark_sick(mp, mask); | |
100 | ||
101 | spin_lock(&mp->m_sb_lock); | |
102 | mp->m_fs_sick |= mask; | |
103 | mp->m_fs_checked |= mask; | |
104 | spin_unlock(&mp->m_sb_lock); | |
105 | } | |
106 | ||
107 | /* Mark a per-fs metadata healed. */ | |
108 | void | |
109 | xfs_fs_mark_healthy( | |
110 | struct xfs_mount *mp, | |
111 | unsigned int mask) | |
112 | { | |
113 | ASSERT(!(mask & ~XFS_SICK_FS_PRIMARY)); | |
114 | trace_xfs_fs_mark_healthy(mp, mask); | |
115 | ||
116 | spin_lock(&mp->m_sb_lock); | |
117 | mp->m_fs_sick &= ~mask; | |
118 | mp->m_fs_checked |= mask; | |
119 | spin_unlock(&mp->m_sb_lock); | |
120 | } | |
121 | ||
122 | /* Sample which per-fs metadata are unhealthy. */ | |
123 | void | |
124 | xfs_fs_measure_sickness( | |
125 | struct xfs_mount *mp, | |
126 | unsigned int *sick, | |
127 | unsigned int *checked) | |
128 | { | |
129 | spin_lock(&mp->m_sb_lock); | |
130 | *sick = mp->m_fs_sick; | |
131 | *checked = mp->m_fs_checked; | |
132 | spin_unlock(&mp->m_sb_lock); | |
133 | } | |
134 | ||
135 | /* Mark unhealthy realtime metadata. */ | |
136 | void | |
137 | xfs_rt_mark_sick( | |
138 | struct xfs_mount *mp, | |
139 | unsigned int mask) | |
140 | { | |
141 | ASSERT(!(mask & ~XFS_SICK_RT_PRIMARY)); | |
142 | trace_xfs_rt_mark_sick(mp, mask); | |
143 | ||
144 | spin_lock(&mp->m_sb_lock); | |
145 | mp->m_rt_sick |= mask; | |
146 | mp->m_rt_checked |= mask; | |
147 | spin_unlock(&mp->m_sb_lock); | |
148 | } | |
149 | ||
150 | /* Mark a realtime metadata healed. */ | |
151 | void | |
152 | xfs_rt_mark_healthy( | |
153 | struct xfs_mount *mp, | |
154 | unsigned int mask) | |
155 | { | |
156 | ASSERT(!(mask & ~XFS_SICK_RT_PRIMARY)); | |
157 | trace_xfs_rt_mark_healthy(mp, mask); | |
158 | ||
159 | spin_lock(&mp->m_sb_lock); | |
160 | mp->m_rt_sick &= ~mask; | |
161 | mp->m_rt_checked |= mask; | |
162 | spin_unlock(&mp->m_sb_lock); | |
163 | } | |
164 | ||
165 | /* Sample which realtime metadata are unhealthy. */ | |
166 | void | |
167 | xfs_rt_measure_sickness( | |
168 | struct xfs_mount *mp, | |
169 | unsigned int *sick, | |
170 | unsigned int *checked) | |
171 | { | |
172 | spin_lock(&mp->m_sb_lock); | |
173 | *sick = mp->m_rt_sick; | |
174 | *checked = mp->m_rt_checked; | |
175 | spin_unlock(&mp->m_sb_lock); | |
176 | } | |
177 | ||
178 | /* Mark unhealthy per-ag metadata. */ | |
179 | void | |
180 | xfs_ag_mark_sick( | |
181 | struct xfs_perag *pag, | |
182 | unsigned int mask) | |
183 | { | |
184 | ASSERT(!(mask & ~XFS_SICK_AG_PRIMARY)); | |
185 | trace_xfs_ag_mark_sick(pag->pag_mount, pag->pag_agno, mask); | |
186 | ||
187 | spin_lock(&pag->pag_state_lock); | |
188 | pag->pag_sick |= mask; | |
189 | pag->pag_checked |= mask; | |
190 | spin_unlock(&pag->pag_state_lock); | |
191 | } | |
192 | ||
193 | /* Mark per-ag metadata ok. */ | |
194 | void | |
195 | xfs_ag_mark_healthy( | |
196 | struct xfs_perag *pag, | |
197 | unsigned int mask) | |
198 | { | |
199 | ASSERT(!(mask & ~XFS_SICK_AG_PRIMARY)); | |
200 | trace_xfs_ag_mark_healthy(pag->pag_mount, pag->pag_agno, mask); | |
201 | ||
202 | spin_lock(&pag->pag_state_lock); | |
203 | pag->pag_sick &= ~mask; | |
204 | pag->pag_checked |= mask; | |
205 | spin_unlock(&pag->pag_state_lock); | |
206 | } | |
207 | ||
208 | /* Sample which per-ag metadata are unhealthy. */ | |
209 | void | |
210 | xfs_ag_measure_sickness( | |
211 | struct xfs_perag *pag, | |
212 | unsigned int *sick, | |
213 | unsigned int *checked) | |
214 | { | |
215 | spin_lock(&pag->pag_state_lock); | |
216 | *sick = pag->pag_sick; | |
217 | *checked = pag->pag_checked; | |
218 | spin_unlock(&pag->pag_state_lock); | |
219 | } | |
220 | ||
221 | /* Mark the unhealthy parts of an inode. */ | |
222 | void | |
223 | xfs_inode_mark_sick( | |
224 | struct xfs_inode *ip, | |
225 | unsigned int mask) | |
226 | { | |
227 | ASSERT(!(mask & ~XFS_SICK_INO_PRIMARY)); | |
228 | trace_xfs_inode_mark_sick(ip, mask); | |
229 | ||
230 | spin_lock(&ip->i_flags_lock); | |
231 | ip->i_sick |= mask; | |
232 | ip->i_checked |= mask; | |
233 | spin_unlock(&ip->i_flags_lock); | |
234 | } | |
235 | ||
236 | /* Mark parts of an inode healed. */ | |
237 | void | |
238 | xfs_inode_mark_healthy( | |
239 | struct xfs_inode *ip, | |
240 | unsigned int mask) | |
241 | { | |
242 | ASSERT(!(mask & ~XFS_SICK_INO_PRIMARY)); | |
243 | trace_xfs_inode_mark_healthy(ip, mask); | |
244 | ||
245 | spin_lock(&ip->i_flags_lock); | |
246 | ip->i_sick &= ~mask; | |
247 | ip->i_checked |= mask; | |
248 | spin_unlock(&ip->i_flags_lock); | |
249 | } | |
250 | ||
251 | /* Sample which parts of an inode are unhealthy. */ | |
252 | void | |
253 | xfs_inode_measure_sickness( | |
254 | struct xfs_inode *ip, | |
255 | unsigned int *sick, | |
256 | unsigned int *checked) | |
257 | { | |
258 | spin_lock(&ip->i_flags_lock); | |
259 | *sick = ip->i_sick; | |
260 | *checked = ip->i_checked; | |
261 | spin_unlock(&ip->i_flags_lock); | |
262 | } | |
c23232d4 DW |
263 | |
264 | /* Mappings between internal sick masks and ioctl sick masks. */ | |
265 | ||
266 | struct ioctl_sick_map { | |
267 | unsigned int sick_mask; | |
268 | unsigned int ioctl_mask; | |
269 | }; | |
270 | ||
271 | static const struct ioctl_sick_map fs_map[] = { | |
272 | { XFS_SICK_FS_COUNTERS, XFS_FSOP_GEOM_SICK_COUNTERS}, | |
273 | { XFS_SICK_FS_UQUOTA, XFS_FSOP_GEOM_SICK_UQUOTA }, | |
274 | { XFS_SICK_FS_GQUOTA, XFS_FSOP_GEOM_SICK_GQUOTA }, | |
275 | { XFS_SICK_FS_PQUOTA, XFS_FSOP_GEOM_SICK_PQUOTA }, | |
276 | { 0, 0 }, | |
277 | }; | |
278 | ||
279 | static const struct ioctl_sick_map rt_map[] = { | |
280 | { XFS_SICK_RT_BITMAP, XFS_FSOP_GEOM_SICK_RT_BITMAP }, | |
281 | { XFS_SICK_RT_SUMMARY, XFS_FSOP_GEOM_SICK_RT_SUMMARY }, | |
282 | { 0, 0 }, | |
283 | }; | |
284 | ||
285 | static inline void | |
286 | xfgeo_health_tick( | |
287 | struct xfs_fsop_geom *geo, | |
288 | unsigned int sick, | |
289 | unsigned int checked, | |
290 | const struct ioctl_sick_map *m) | |
291 | { | |
292 | if (checked & m->sick_mask) | |
293 | geo->checked |= m->ioctl_mask; | |
294 | if (sick & m->sick_mask) | |
295 | geo->sick |= m->ioctl_mask; | |
296 | } | |
297 | ||
298 | /* Fill out fs geometry health info. */ | |
299 | void | |
300 | xfs_fsop_geom_health( | |
301 | struct xfs_mount *mp, | |
302 | struct xfs_fsop_geom *geo) | |
303 | { | |
304 | const struct ioctl_sick_map *m; | |
305 | unsigned int sick; | |
306 | unsigned int checked; | |
307 | ||
308 | geo->sick = 0; | |
309 | geo->checked = 0; | |
310 | ||
311 | xfs_fs_measure_sickness(mp, &sick, &checked); | |
312 | for (m = fs_map; m->sick_mask; m++) | |
313 | xfgeo_health_tick(geo, sick, checked, m); | |
314 | ||
315 | xfs_rt_measure_sickness(mp, &sick, &checked); | |
316 | for (m = rt_map; m->sick_mask; m++) | |
317 | xfgeo_health_tick(geo, sick, checked, m); | |
318 | } | |
1302c6a2 DW |
319 | |
320 | static const struct ioctl_sick_map ag_map[] = { | |
321 | { XFS_SICK_AG_SB, XFS_AG_GEOM_SICK_SB }, | |
322 | { XFS_SICK_AG_AGF, XFS_AG_GEOM_SICK_AGF }, | |
323 | { XFS_SICK_AG_AGFL, XFS_AG_GEOM_SICK_AGFL }, | |
324 | { XFS_SICK_AG_AGI, XFS_AG_GEOM_SICK_AGI }, | |
325 | { XFS_SICK_AG_BNOBT, XFS_AG_GEOM_SICK_BNOBT }, | |
326 | { XFS_SICK_AG_CNTBT, XFS_AG_GEOM_SICK_CNTBT }, | |
327 | { XFS_SICK_AG_INOBT, XFS_AG_GEOM_SICK_INOBT }, | |
328 | { XFS_SICK_AG_FINOBT, XFS_AG_GEOM_SICK_FINOBT }, | |
329 | { XFS_SICK_AG_RMAPBT, XFS_AG_GEOM_SICK_RMAPBT }, | |
330 | { XFS_SICK_AG_REFCNTBT, XFS_AG_GEOM_SICK_REFCNTBT }, | |
331 | { 0, 0 }, | |
332 | }; | |
333 | ||
334 | /* Fill out ag geometry health info. */ | |
335 | void | |
336 | xfs_ag_geom_health( | |
337 | struct xfs_perag *pag, | |
338 | struct xfs_ag_geometry *ageo) | |
339 | { | |
340 | const struct ioctl_sick_map *m; | |
341 | unsigned int sick; | |
342 | unsigned int checked; | |
343 | ||
344 | ageo->ag_sick = 0; | |
345 | ageo->ag_checked = 0; | |
346 | ||
347 | xfs_ag_measure_sickness(pag, &sick, &checked); | |
348 | for (m = ag_map; m->sick_mask; m++) { | |
349 | if (checked & m->sick_mask) | |
350 | ageo->ag_checked |= m->ioctl_mask; | |
351 | if (sick & m->sick_mask) | |
352 | ageo->ag_sick |= m->ioctl_mask; | |
353 | } | |
354 | } | |
89d139d5 DW |
355 | |
356 | static const struct ioctl_sick_map ino_map[] = { | |
357 | { XFS_SICK_INO_CORE, XFS_BS_SICK_INODE }, | |
358 | { XFS_SICK_INO_BMBTD, XFS_BS_SICK_BMBTD }, | |
359 | { XFS_SICK_INO_BMBTA, XFS_BS_SICK_BMBTA }, | |
360 | { XFS_SICK_INO_BMBTC, XFS_BS_SICK_BMBTC }, | |
361 | { XFS_SICK_INO_DIR, XFS_BS_SICK_DIR }, | |
362 | { XFS_SICK_INO_XATTR, XFS_BS_SICK_XATTR }, | |
363 | { XFS_SICK_INO_SYMLINK, XFS_BS_SICK_SYMLINK }, | |
364 | { XFS_SICK_INO_PARENT, XFS_BS_SICK_PARENT }, | |
365 | { 0, 0 }, | |
366 | }; | |
367 | ||
368 | /* Fill out bulkstat health info. */ | |
369 | void | |
370 | xfs_bulkstat_health( | |
371 | struct xfs_inode *ip, | |
372 | struct xfs_bstat *bs) | |
373 | { | |
374 | const struct ioctl_sick_map *m; | |
375 | unsigned int sick; | |
376 | unsigned int checked; | |
377 | ||
378 | bs->bs_sick = 0; | |
379 | bs->bs_checked = 0; | |
380 | ||
381 | xfs_inode_measure_sickness(ip, &sick, &checked); | |
382 | for (m = ino_map; m->sick_mask; m++) { | |
383 | if (checked & m->sick_mask) | |
384 | bs->bs_checked |= m->ioctl_mask; | |
385 | if (sick & m->sick_mask) | |
386 | bs->bs_sick |= m->ioctl_mask; | |
387 | } | |
388 | } |