Loading...
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/crc32.h>
16#include <linux/gfs2_ondisk.h>
17#include <asm/uaccess.h>
18
19#include "gfs2.h"
20#include "incore.h"
21#include "glock.h"
22#include "util.h"
23
24struct kmem_cache *gfs2_glock_cachep __read_mostly;
25struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
26struct kmem_cache *gfs2_inode_cachep __read_mostly;
27struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
28struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
29struct kmem_cache *gfs2_quotad_cachep __read_mostly;
30struct kmem_cache *gfs2_qadata_cachep __read_mostly;
31mempool_t *gfs2_page_pool __read_mostly;
32
33void gfs2_assert_i(struct gfs2_sbd *sdp)
34{
35 fs_emerg(sdp, "fatal assertion failed\n");
36}
37
38int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...)
39{
40 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
41 const struct lm_lockops *lm = ls->ls_ops;
42 va_list args;
43 struct va_format vaf;
44
45 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
46 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
47 return 0;
48
49 va_start(args, fmt);
50
51 vaf.fmt = fmt;
52 vaf.va = &args;
53
54 fs_err(sdp, "%pV", &vaf);
55
56 va_end(args);
57
58 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
59 fs_err(sdp, "about to withdraw this file system\n");
60 BUG_ON(sdp->sd_args.ar_debug);
61
62 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
63
64 if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
65 wait_for_completion(&sdp->sd_wdack);
66
67 if (lm->lm_unmount) {
68 fs_err(sdp, "telling LM to unmount\n");
69 lm->lm_unmount(sdp);
70 }
71 fs_err(sdp, "withdrawn\n");
72 dump_stack();
73 }
74
75 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
76 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname);
77
78 return -1;
79}
80
81/**
82 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
83 * Returns: -1 if this call withdrew the machine,
84 * -2 if it was already withdrawn
85 */
86
87int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
88 const char *function, char *file, unsigned int line)
89{
90 int me;
91 me = gfs2_lm_withdraw(sdp,
92 "fatal: assertion \"%s\" failed\n"
93 " function = %s, file = %s, line = %u\n",
94 assertion, function, file, line);
95 dump_stack();
96 return (me) ? -1 : -2;
97}
98
99/**
100 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
101 * Returns: -1 if we printed something
102 * -2 if we didn't
103 */
104
105int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
106 const char *function, char *file, unsigned int line)
107{
108 if (time_before(jiffies,
109 sdp->sd_last_warning +
110 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
111 return -2;
112
113 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
114 fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n",
115 assertion, function, file, line);
116
117 if (sdp->sd_args.ar_debug)
118 BUG();
119 else
120 dump_stack();
121
122 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
123 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
124 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
125 sdp->sd_fsname, assertion,
126 sdp->sd_fsname, function, file, line);
127
128 sdp->sd_last_warning = jiffies;
129
130 return -1;
131}
132
133/**
134 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
135 * Returns: -1 if this call withdrew the machine,
136 * 0 if it was already withdrawn
137 */
138
139int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
140 char *file, unsigned int line)
141{
142 int rv;
143 rv = gfs2_lm_withdraw(sdp,
144 "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n",
145 function, file, line);
146 return rv;
147}
148
149/**
150 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
151 * Returns: -1 if this call withdrew the machine,
152 * 0 if it was already withdrawn
153 */
154
155int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
156 const char *function, char *file, unsigned int line)
157{
158 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
159 int rv;
160 rv = gfs2_lm_withdraw(sdp,
161 "fatal: filesystem consistency error\n"
162 " inode = %llu %llu\n"
163 " function = %s, file = %s, line = %u\n",
164 (unsigned long long)ip->i_no_formal_ino,
165 (unsigned long long)ip->i_no_addr,
166 function, file, line);
167 return rv;
168}
169
170/**
171 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
172 * Returns: -1 if this call withdrew the machine,
173 * 0 if it was already withdrawn
174 */
175
176int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
177 const char *function, char *file, unsigned int line)
178{
179 struct gfs2_sbd *sdp = rgd->rd_sbd;
180 int rv;
181 rv = gfs2_lm_withdraw(sdp,
182 "fatal: filesystem consistency error\n"
183 " RG = %llu\n"
184 " function = %s, file = %s, line = %u\n",
185 (unsigned long long)rgd->rd_addr,
186 function, file, line);
187 return rv;
188}
189
190/**
191 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
192 * Returns: -1 if this call withdrew the machine,
193 * -2 if it was already withdrawn
194 */
195
196int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
197 const char *type, const char *function, char *file,
198 unsigned int line)
199{
200 int me;
201 me = gfs2_lm_withdraw(sdp,
202 "fatal: invalid metadata block\n"
203 " bh = %llu (%s)\n"
204 " function = %s, file = %s, line = %u\n",
205 (unsigned long long)bh->b_blocknr, type,
206 function, file, line);
207 return (me) ? -1 : -2;
208}
209
210/**
211 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
212 * Returns: -1 if this call withdrew the machine,
213 * -2 if it was already withdrawn
214 */
215
216int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
217 u16 type, u16 t, const char *function,
218 char *file, unsigned int line)
219{
220 int me;
221 me = gfs2_lm_withdraw(sdp,
222 "fatal: invalid metadata block\n"
223 " bh = %llu (type: exp=%u, found=%u)\n"
224 " function = %s, file = %s, line = %u\n",
225 (unsigned long long)bh->b_blocknr, type, t,
226 function, file, line);
227 return (me) ? -1 : -2;
228}
229
230/**
231 * gfs2_io_error_i - Flag an I/O error and withdraw
232 * Returns: -1 if this call withdrew the machine,
233 * 0 if it was already withdrawn
234 */
235
236int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
237 unsigned int line)
238{
239 int rv;
240 rv = gfs2_lm_withdraw(sdp,
241 "fatal: I/O error\n"
242 " function = %s, file = %s, line = %u\n",
243 function, file, line);
244 return rv;
245}
246
247/**
248 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
249 * Returns: -1 if this call withdrew the machine,
250 * 0 if it was already withdrawn
251 */
252
253int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
254 const char *function, char *file, unsigned int line)
255{
256 int rv;
257 rv = gfs2_lm_withdraw(sdp,
258 "fatal: I/O error\n"
259 " block = %llu\n"
260 " function = %s, file = %s, line = %u\n",
261 (unsigned long long)bh->b_blocknr,
262 function, file, line);
263 return rv;
264}
265
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/spinlock.h>
10#include <linux/completion.h>
11#include <linux/buffer_head.h>
12#include <linux/kthread.h>
13#include <linux/crc32.h>
14#include <linux/gfs2_ondisk.h>
15#include <linux/delay.h>
16#include <linux/uaccess.h>
17
18#include "gfs2.h"
19#include "incore.h"
20#include "glock.h"
21#include "glops.h"
22#include "log.h"
23#include "lops.h"
24#include "recovery.h"
25#include "rgrp.h"
26#include "super.h"
27#include "util.h"
28
29struct kmem_cache *gfs2_glock_cachep __read_mostly;
30struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
31struct kmem_cache *gfs2_inode_cachep __read_mostly;
32struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
33struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
34struct kmem_cache *gfs2_quotad_cachep __read_mostly;
35struct kmem_cache *gfs2_qadata_cachep __read_mostly;
36struct kmem_cache *gfs2_trans_cachep __read_mostly;
37mempool_t *gfs2_page_pool __read_mostly;
38
39void gfs2_assert_i(struct gfs2_sbd *sdp)
40{
41 fs_emerg(sdp, "fatal assertion failed\n");
42}
43
44/**
45 * check_journal_clean - Make sure a journal is clean for a spectator mount
46 * @sdp: The GFS2 superblock
47 * @jd: The journal descriptor
48 * @verbose: Show more prints in the log
49 *
50 * Returns: 0 if the journal is clean or locked, else an error
51 */
52int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
53 bool verbose)
54{
55 int error;
56 struct gfs2_holder j_gh;
57 struct gfs2_log_header_host head;
58 struct gfs2_inode *ip;
59
60 ip = GFS2_I(jd->jd_inode);
61 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP |
62 GL_EXACT | GL_NOCACHE, &j_gh);
63 if (error) {
64 if (verbose)
65 fs_err(sdp, "Error %d locking journal for spectator "
66 "mount.\n", error);
67 return -EPERM;
68 }
69 error = gfs2_jdesc_check(jd);
70 if (error) {
71 if (verbose)
72 fs_err(sdp, "Error checking journal for spectator "
73 "mount.\n");
74 goto out_unlock;
75 }
76 error = gfs2_find_jhead(jd, &head, false);
77 if (error) {
78 if (verbose)
79 fs_err(sdp, "Error parsing journal for spectator "
80 "mount.\n");
81 goto out_unlock;
82 }
83 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) {
84 error = -EPERM;
85 if (verbose)
86 fs_err(sdp, "jid=%u: Journal is dirty, so the first "
87 "mounter must not be a spectator.\n",
88 jd->jd_jid);
89 }
90
91out_unlock:
92 gfs2_glock_dq_uninit(&j_gh);
93 return error;
94}
95
96/**
97 * gfs2_freeze_lock_shared - hold the freeze glock
98 * @sdp: the superblock
99 */
100int gfs2_freeze_lock_shared(struct gfs2_sbd *sdp)
101{
102 int flags = LM_FLAG_NOEXP | GL_EXACT;
103 int error;
104
105 error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, flags,
106 &sdp->sd_freeze_gh);
107 if (error && error != GLR_TRYFAILED)
108 fs_err(sdp, "can't lock the freeze glock: %d\n", error);
109 return error;
110}
111
112void gfs2_freeze_unlock(struct gfs2_sbd *sdp)
113{
114 if (gfs2_holder_initialized(&sdp->sd_freeze_gh))
115 gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
116}
117
118static void signal_our_withdraw(struct gfs2_sbd *sdp)
119{
120 struct gfs2_glock *live_gl = sdp->sd_live_gh.gh_gl;
121 struct inode *inode;
122 struct gfs2_inode *ip;
123 struct gfs2_glock *i_gl;
124 u64 no_formal_ino;
125 int ret = 0;
126 int tries;
127
128 if (test_bit(SDF_NORECOVERY, &sdp->sd_flags) || !sdp->sd_jdesc)
129 return;
130
131 gfs2_ail_drain(sdp); /* frees all transactions */
132 inode = sdp->sd_jdesc->jd_inode;
133 ip = GFS2_I(inode);
134 i_gl = ip->i_gl;
135 no_formal_ino = ip->i_no_formal_ino;
136
137 /* Prevent any glock dq until withdraw recovery is complete */
138 set_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
139 /*
140 * Don't tell dlm we're bailing until we have no more buffers in the
141 * wind. If journal had an IO error, the log code should just purge
142 * the outstanding buffers rather than submitting new IO. Making the
143 * file system read-only will flush the journal, etc.
144 *
145 * During a normal unmount, gfs2_make_fs_ro calls gfs2_log_shutdown
146 * which clears SDF_JOURNAL_LIVE. In a withdraw, we must not write
147 * any UNMOUNT log header, so we can't call gfs2_log_shutdown, and
148 * therefore we need to clear SDF_JOURNAL_LIVE manually.
149 */
150 clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
151 if (!sb_rdonly(sdp->sd_vfs)) {
152 bool locked = mutex_trylock(&sdp->sd_freeze_mutex);
153
154 wake_up(&sdp->sd_logd_waitq);
155 wake_up(&sdp->sd_quota_wait);
156
157 wait_event_timeout(sdp->sd_log_waitq,
158 gfs2_log_is_empty(sdp),
159 HZ * 5);
160
161 sdp->sd_vfs->s_flags |= SB_RDONLY;
162
163 if (locked)
164 mutex_unlock(&sdp->sd_freeze_mutex);
165
166 /*
167 * Dequeue any pending non-system glock holders that can no
168 * longer be granted because the file system is withdrawn.
169 */
170 gfs2_gl_dq_holders(sdp);
171 }
172
173 if (sdp->sd_lockstruct.ls_ops->lm_lock == NULL) { /* lock_nolock */
174 if (!ret)
175 ret = -EIO;
176 clear_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
177 goto skip_recovery;
178 }
179 /*
180 * Drop the glock for our journal so another node can recover it.
181 */
182 if (gfs2_holder_initialized(&sdp->sd_journal_gh)) {
183 gfs2_glock_dq_wait(&sdp->sd_journal_gh);
184 gfs2_holder_uninit(&sdp->sd_journal_gh);
185 }
186 sdp->sd_jinode_gh.gh_flags |= GL_NOCACHE;
187 gfs2_glock_dq(&sdp->sd_jinode_gh);
188 gfs2_thaw_freeze_initiator(sdp->sd_vfs);
189 wait_on_bit(&i_gl->gl_flags, GLF_DEMOTE, TASK_UNINTERRUPTIBLE);
190
191 /*
192 * holder_uninit to force glock_put, to force dlm to let go
193 */
194 gfs2_holder_uninit(&sdp->sd_jinode_gh);
195
196 /*
197 * Note: We need to be careful here:
198 * Our iput of jd_inode will evict it. The evict will dequeue its
199 * glock, but the glock dq will wait for the withdraw unless we have
200 * exception code in glock_dq.
201 */
202 iput(inode);
203 sdp->sd_jdesc->jd_inode = NULL;
204 /*
205 * Wait until the journal inode's glock is freed. This allows try locks
206 * on other nodes to be successful, otherwise we remain the owner of
207 * the glock as far as dlm is concerned.
208 */
209 if (i_gl->gl_ops->go_unlocked) {
210 set_bit(GLF_UNLOCKED, &i_gl->gl_flags);
211 wait_on_bit(&i_gl->gl_flags, GLF_UNLOCKED, TASK_UNINTERRUPTIBLE);
212 }
213
214 /*
215 * Dequeue the "live" glock, but keep a reference so it's never freed.
216 */
217 gfs2_glock_hold(live_gl);
218 gfs2_glock_dq_wait(&sdp->sd_live_gh);
219 /*
220 * We enqueue the "live" glock in EX so that all other nodes
221 * get a demote request and act on it. We don't really want the
222 * lock in EX, so we send a "try" lock with 1CB to produce a callback.
223 */
224 fs_warn(sdp, "Requesting recovery of jid %d.\n",
225 sdp->sd_lockstruct.ls_jid);
226 gfs2_holder_reinit(LM_ST_EXCLUSIVE,
227 LM_FLAG_TRY_1CB | LM_FLAG_NOEXP | GL_NOPID,
228 &sdp->sd_live_gh);
229 msleep(GL_GLOCK_MAX_HOLD);
230 /*
231 * This will likely fail in a cluster, but succeed standalone:
232 */
233 ret = gfs2_glock_nq(&sdp->sd_live_gh);
234
235 /*
236 * If we actually got the "live" lock in EX mode, there are no other
237 * nodes available to replay our journal. So we try to replay it
238 * ourselves. We hold the "live" glock to prevent other mounters
239 * during recovery, then just dequeue it and reacquire it in our
240 * normal SH mode. Just in case the problem that caused us to
241 * withdraw prevents us from recovering our journal (e.g. io errors
242 * and such) we still check if the journal is clean before proceeding
243 * but we may wait forever until another mounter does the recovery.
244 */
245 if (ret == 0) {
246 fs_warn(sdp, "No other mounters found. Trying to recover our "
247 "own journal jid %d.\n", sdp->sd_lockstruct.ls_jid);
248 if (gfs2_recover_journal(sdp->sd_jdesc, 1))
249 fs_warn(sdp, "Unable to recover our journal jid %d.\n",
250 sdp->sd_lockstruct.ls_jid);
251 gfs2_glock_dq_wait(&sdp->sd_live_gh);
252 gfs2_holder_reinit(LM_ST_SHARED,
253 LM_FLAG_NOEXP | GL_EXACT | GL_NOPID,
254 &sdp->sd_live_gh);
255 gfs2_glock_nq(&sdp->sd_live_gh);
256 }
257
258 gfs2_glock_put(live_gl); /* drop extra reference we acquired */
259 clear_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
260
261 /*
262 * At this point our journal is evicted, so we need to get a new inode
263 * for it. Once done, we need to call gfs2_find_jhead which
264 * calls gfs2_map_journal_extents to map it for us again.
265 *
266 * Note that we don't really want it to look up a FREE block. The
267 * GFS2_BLKST_FREE simply overrides a block check in gfs2_inode_lookup
268 * which would otherwise fail because it requires grabbing an rgrp
269 * glock, which would fail with -EIO because we're withdrawing.
270 */
271 inode = gfs2_inode_lookup(sdp->sd_vfs, DT_UNKNOWN,
272 sdp->sd_jdesc->jd_no_addr, no_formal_ino,
273 GFS2_BLKST_FREE);
274 if (IS_ERR(inode)) {
275 fs_warn(sdp, "Reprocessing of jid %d failed with %ld.\n",
276 sdp->sd_lockstruct.ls_jid, PTR_ERR(inode));
277 goto skip_recovery;
278 }
279 sdp->sd_jdesc->jd_inode = inode;
280 d_mark_dontcache(inode);
281
282 /*
283 * Now wait until recovery is complete.
284 */
285 for (tries = 0; tries < 10; tries++) {
286 ret = check_journal_clean(sdp, sdp->sd_jdesc, false);
287 if (!ret)
288 break;
289 msleep(HZ);
290 fs_warn(sdp, "Waiting for journal recovery jid %d.\n",
291 sdp->sd_lockstruct.ls_jid);
292 }
293skip_recovery:
294 if (!ret)
295 fs_warn(sdp, "Journal recovery complete for jid %d.\n",
296 sdp->sd_lockstruct.ls_jid);
297 else
298 fs_warn(sdp, "Journal recovery skipped for jid %d until next "
299 "mount.\n", sdp->sd_lockstruct.ls_jid);
300 fs_warn(sdp, "Glock dequeues delayed: %lu\n", sdp->sd_glock_dqs_held);
301 sdp->sd_glock_dqs_held = 0;
302 wake_up_bit(&sdp->sd_flags, SDF_WITHDRAW_RECOVERY);
303}
304
305void gfs2_lm(struct gfs2_sbd *sdp, const char *fmt, ...)
306{
307 struct va_format vaf;
308 va_list args;
309
310 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
311 test_bit(SDF_WITHDRAWN, &sdp->sd_flags))
312 return;
313
314 va_start(args, fmt);
315 vaf.fmt = fmt;
316 vaf.va = &args;
317 fs_err(sdp, "%pV", &vaf);
318 va_end(args);
319}
320
321int gfs2_withdraw(struct gfs2_sbd *sdp)
322{
323 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
324 const struct lm_lockops *lm = ls->ls_ops;
325
326 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
327 unsigned long old = READ_ONCE(sdp->sd_flags), new;
328
329 do {
330 if (old & BIT(SDF_WITHDRAWN)) {
331 wait_on_bit(&sdp->sd_flags,
332 SDF_WITHDRAW_IN_PROG,
333 TASK_UNINTERRUPTIBLE);
334 return -1;
335 }
336 new = old | BIT(SDF_WITHDRAWN) | BIT(SDF_WITHDRAW_IN_PROG);
337 } while (unlikely(!try_cmpxchg(&sdp->sd_flags, &old, new)));
338
339 fs_err(sdp, "about to withdraw this file system\n");
340 BUG_ON(sdp->sd_args.ar_debug);
341
342 signal_our_withdraw(sdp);
343
344 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
345
346 if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
347 wait_for_completion(&sdp->sd_wdack);
348
349 if (lm->lm_unmount) {
350 fs_err(sdp, "telling LM to unmount\n");
351 lm->lm_unmount(sdp);
352 }
353 fs_err(sdp, "File system withdrawn\n");
354 dump_stack();
355 clear_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags);
356 smp_mb__after_atomic();
357 wake_up_bit(&sdp->sd_flags, SDF_WITHDRAW_IN_PROG);
358 }
359
360 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
361 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname);
362
363 return -1;
364}
365
366/*
367 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
368 */
369
370void gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
371 const char *function, char *file, unsigned int line,
372 bool delayed)
373{
374 if (gfs2_withdrawing_or_withdrawn(sdp))
375 return;
376
377 fs_err(sdp,
378 "fatal: assertion \"%s\" failed - "
379 "function = %s, file = %s, line = %u\n",
380 assertion, function, file, line);
381
382 /*
383 * If errors=panic was specified on mount, it won't help to delay the
384 * withdraw.
385 */
386 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
387 delayed = false;
388
389 if (delayed)
390 gfs2_withdraw_delayed(sdp);
391 else
392 gfs2_withdraw(sdp);
393 dump_stack();
394}
395
396/*
397 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
398 */
399
400void gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
401 const char *function, char *file, unsigned int line)
402{
403 if (time_before(jiffies,
404 sdp->sd_last_warning +
405 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
406 return;
407
408 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
409 fs_warn(sdp, "warning: assertion \"%s\" failed - "
410 "function = %s, file = %s, line = %u\n",
411 assertion, function, file, line);
412
413 if (sdp->sd_args.ar_debug)
414 BUG();
415 else
416 dump_stack();
417
418 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
419 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed - "
420 "function = %s, file = %s, line = %u\n",
421 sdp->sd_fsname, assertion,
422 function, file, line);
423
424 sdp->sd_last_warning = jiffies;
425}
426
427/*
428 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
429 */
430
431void gfs2_consist_i(struct gfs2_sbd *sdp, const char *function,
432 char *file, unsigned int line)
433{
434 gfs2_lm(sdp,
435 "fatal: filesystem consistency error - "
436 "function = %s, file = %s, line = %u\n",
437 function, file, line);
438 gfs2_withdraw(sdp);
439}
440
441/*
442 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
443 */
444
445void gfs2_consist_inode_i(struct gfs2_inode *ip,
446 const char *function, char *file, unsigned int line)
447{
448 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
449
450 gfs2_lm(sdp,
451 "fatal: filesystem consistency error - "
452 "inode = %llu %llu, "
453 "function = %s, file = %s, line = %u\n",
454 (unsigned long long)ip->i_no_formal_ino,
455 (unsigned long long)ip->i_no_addr,
456 function, file, line);
457 gfs2_dump_glock(NULL, ip->i_gl, 1);
458 gfs2_withdraw(sdp);
459}
460
461/*
462 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
463 */
464
465void gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd,
466 const char *function, char *file, unsigned int line)
467{
468 struct gfs2_sbd *sdp = rgd->rd_sbd;
469 char fs_id_buf[sizeof(sdp->sd_fsname) + 7];
470
471 sprintf(fs_id_buf, "fsid=%s: ", sdp->sd_fsname);
472 gfs2_rgrp_dump(NULL, rgd, fs_id_buf);
473 gfs2_lm(sdp,
474 "fatal: filesystem consistency error - "
475 "RG = %llu, "
476 "function = %s, file = %s, line = %u\n",
477 (unsigned long long)rgd->rd_addr,
478 function, file, line);
479 gfs2_dump_glock(NULL, rgd->rd_gl, 1);
480 gfs2_withdraw(sdp);
481}
482
483/*
484 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
485 * Returns: -1 if this call withdrew the machine,
486 * -2 if it was already withdrawn
487 */
488
489int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
490 const char *function, char *file,
491 unsigned int line)
492{
493 int me;
494
495 gfs2_lm(sdp,
496 "fatal: invalid metadata block - "
497 "bh = %llu (bad magic number), "
498 "function = %s, file = %s, line = %u\n",
499 (unsigned long long)bh->b_blocknr,
500 function, file, line);
501 me = gfs2_withdraw(sdp);
502 return (me) ? -1 : -2;
503}
504
505/*
506 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
507 * Returns: -1 if this call withdrew the machine,
508 * -2 if it was already withdrawn
509 */
510
511int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
512 u16 type, u16 t, const char *function,
513 char *file, unsigned int line)
514{
515 int me;
516
517 gfs2_lm(sdp,
518 "fatal: invalid metadata block - "
519 "bh = %llu (type: exp=%u, found=%u), "
520 "function = %s, file = %s, line = %u\n",
521 (unsigned long long)bh->b_blocknr, type, t,
522 function, file, line);
523 me = gfs2_withdraw(sdp);
524 return (me) ? -1 : -2;
525}
526
527/*
528 * gfs2_io_error_i - Flag an I/O error and withdraw
529 * Returns: -1 if this call withdrew the machine,
530 * 0 if it was already withdrawn
531 */
532
533int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
534 unsigned int line)
535{
536 gfs2_lm(sdp,
537 "fatal: I/O error - "
538 "function = %s, file = %s, line = %u\n",
539 function, file, line);
540 return gfs2_withdraw(sdp);
541}
542
543/*
544 * gfs2_io_error_bh_i - Flag a buffer I/O error
545 * @withdraw: withdraw the filesystem
546 */
547
548void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
549 const char *function, char *file, unsigned int line,
550 bool withdraw)
551{
552 if (gfs2_withdrawing_or_withdrawn(sdp))
553 return;
554
555 fs_err(sdp, "fatal: I/O error - "
556 "block = %llu, "
557 "function = %s, file = %s, line = %u\n",
558 (unsigned long long)bh->b_blocknr, function, file, line);
559 if (withdraw)
560 gfs2_withdraw(sdp);
561}
562