2 * Copyright (C) 2011 STRATO. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include "kerncompat.h"
21 #include <sys/ioctl.h>
24 #include <sys/types.h>
25 #include <sys/socket.h>
27 #include <sys/syscall.h>
30 #include <uuid/uuid.h>
46 static const char * const scrub_cmd_group_usage
[] = {
47 "btrfs scrub <command> [options] <path>|<device>",
51 #define SCRUB_DATA_FILE "/var/lib/btrfs/scrub.status"
52 #define SCRUB_PROGRESS_SOCKET_PATH "/var/lib/btrfs/scrub.progress"
53 #define SCRUB_FILE_VERSION_PREFIX "scrub status"
54 #define SCRUB_FILE_VERSION "1"
64 /* TBD: replace with #include "linux/ioprio.h" in some years */
65 #if !defined (IOPRIO_H)
66 #define IOPRIO_WHO_PROCESS 1
67 #define IOPRIO_CLASS_SHIFT 13
68 #define IOPRIO_PRIO_VALUE(class, data) \
69 (((class) << IOPRIO_CLASS_SHIFT) | (data))
70 #define IOPRIO_CLASS_IDLE 3
73 struct scrub_progress
{
74 struct btrfs_ioctl_scrub_args scrub_args
;
78 struct scrub_stats stats
;
79 struct scrub_file_record
*resumed
;
81 pthread_mutex_t progress_mutex
;
86 struct scrub_file_record
{
87 u8 fsid
[BTRFS_FSID_SIZE
];
89 struct scrub_stats stats
;
90 struct btrfs_scrub_progress p
;
93 struct scrub_progress_cycle
{
97 struct btrfs_ioctl_fs_info_args
*fi
;
98 struct scrub_progress
*progress
;
99 struct scrub_progress
*shared_progress
;
100 pthread_mutex_t
*write_mutex
;
103 struct scrub_fs_stat
{
104 struct btrfs_scrub_progress p
;
105 struct scrub_stats s
;
109 static void print_scrub_full(struct btrfs_scrub_progress
*sp
)
111 printf("\tdata_extents_scrubbed: %lld\n", sp
->data_extents_scrubbed
);
112 printf("\ttree_extents_scrubbed: %lld\n", sp
->tree_extents_scrubbed
);
113 printf("\tdata_bytes_scrubbed: %lld\n", sp
->data_bytes_scrubbed
);
114 printf("\ttree_bytes_scrubbed: %lld\n", sp
->tree_bytes_scrubbed
);
115 printf("\tread_errors: %lld\n", sp
->read_errors
);
116 printf("\tcsum_errors: %lld\n", sp
->csum_errors
);
117 printf("\tverify_errors: %lld\n", sp
->verify_errors
);
118 printf("\tno_csum: %lld\n", sp
->no_csum
);
119 printf("\tcsum_discards: %lld\n", sp
->csum_discards
);
120 printf("\tsuper_errors: %lld\n", sp
->super_errors
);
121 printf("\tmalloc_errors: %lld\n", sp
->malloc_errors
);
122 printf("\tuncorrectable_errors: %lld\n", sp
->uncorrectable_errors
);
123 printf("\tunverified_errors: %lld\n", sp
->unverified_errors
);
124 printf("\tcorrected_errors: %lld\n", sp
->corrected_errors
);
125 printf("\tlast_physical: %lld\n", sp
->last_physical
);
128 #define ERR(test, ...) do { \
130 fprintf(stderr, __VA_ARGS__); \
133 #define PRINT_SCRUB_ERROR(test, desc) do { \
135 printf(" %s=%llu", desc, test); \
138 static void print_scrub_summary(struct btrfs_scrub_progress
*p
)
143 err_cnt
= p
->read_errors
+
148 err_cnt2
= p
->corrected_errors
+ p
->uncorrectable_errors
;
150 if (p
->malloc_errors
)
151 printf("*** WARNING: memory allocation failed while scrubbing. "
152 "results may be inaccurate\n");
154 printf("\ttotal bytes scrubbed: %s with %llu errors\n",
155 pretty_size(p
->data_bytes_scrubbed
+ p
->tree_bytes_scrubbed
),
156 max(err_cnt
, err_cnt2
));
158 if (err_cnt
|| err_cnt2
) {
159 printf("\terror details:");
160 PRINT_SCRUB_ERROR(p
->read_errors
, "read");
161 PRINT_SCRUB_ERROR(p
->super_errors
, "super");
162 PRINT_SCRUB_ERROR(p
->verify_errors
, "verify");
163 PRINT_SCRUB_ERROR(p
->csum_errors
, "csum");
165 printf("\tcorrected errors: %llu, uncorrectable errors: %llu, "
166 "unverified errors: %llu\n", p
->corrected_errors
,
167 p
->uncorrectable_errors
, p
->unverified_errors
);
171 #define _SCRUB_FS_STAT(p, name, fs_stat) do { \
172 fs_stat->p.name += p->name; \
175 #define _SCRUB_FS_STAT_MIN(ss, name, fs_stat) \
177 if (fs_stat->s.name > ss->name) { \
178 fs_stat->s.name = ss->name; \
182 #define _SCRUB_FS_STAT_ZMIN(ss, name, fs_stat) \
184 if (!fs_stat->s.name || fs_stat->s.name > ss->name) { \
185 fs_stat->s.name = ss->name; \
189 #define _SCRUB_FS_STAT_ZMAX(ss, name, fs_stat) \
191 if (!(fs_stat)->s.name || (fs_stat)->s.name < (ss)->name) { \
192 (fs_stat)->s.name = (ss)->name; \
196 static void add_to_fs_stat(struct btrfs_scrub_progress
*p
,
197 struct scrub_stats
*ss
,
198 struct scrub_fs_stat
*fs_stat
)
200 _SCRUB_FS_STAT(p
, data_extents_scrubbed
, fs_stat
);
201 _SCRUB_FS_STAT(p
, tree_extents_scrubbed
, fs_stat
);
202 _SCRUB_FS_STAT(p
, data_bytes_scrubbed
, fs_stat
);
203 _SCRUB_FS_STAT(p
, tree_bytes_scrubbed
, fs_stat
);
204 _SCRUB_FS_STAT(p
, read_errors
, fs_stat
);
205 _SCRUB_FS_STAT(p
, csum_errors
, fs_stat
);
206 _SCRUB_FS_STAT(p
, verify_errors
, fs_stat
);
207 _SCRUB_FS_STAT(p
, no_csum
, fs_stat
);
208 _SCRUB_FS_STAT(p
, csum_discards
, fs_stat
);
209 _SCRUB_FS_STAT(p
, super_errors
, fs_stat
);
210 _SCRUB_FS_STAT(p
, malloc_errors
, fs_stat
);
211 _SCRUB_FS_STAT(p
, uncorrectable_errors
, fs_stat
);
212 _SCRUB_FS_STAT(p
, corrected_errors
, fs_stat
);
213 _SCRUB_FS_STAT(p
, last_physical
, fs_stat
);
214 _SCRUB_FS_STAT_ZMIN(ss
, t_start
, fs_stat
);
215 _SCRUB_FS_STAT_ZMIN(ss
, t_resumed
, fs_stat
);
216 _SCRUB_FS_STAT_ZMAX(ss
, duration
, fs_stat
);
217 _SCRUB_FS_STAT_ZMAX(ss
, canceled
, fs_stat
);
218 _SCRUB_FS_STAT_MIN(ss
, finished
, fs_stat
);
221 static void init_fs_stat(struct scrub_fs_stat
*fs_stat
)
223 memset(fs_stat
, 0, sizeof(*fs_stat
));
224 fs_stat
->s
.finished
= 1;
227 static void _print_scrub_ss(struct scrub_stats
*ss
)
232 if (!ss
|| !ss
->t_start
) {
233 printf("\tno stats available\n");
237 localtime_r(&ss
->t_resumed
, &tm
);
238 strftime(t
, sizeof(t
), "%c", &tm
);
239 t
[sizeof(t
) - 1] = '\0';
240 printf("\tscrub resumed at %s", t
);
242 localtime_r(&ss
->t_start
, &tm
);
243 strftime(t
, sizeof(t
), "%c", &tm
);
244 t
[sizeof(t
) - 1] = '\0';
245 printf("\tscrub started at %s", t
);
247 if (ss
->finished
&& !ss
->canceled
) {
248 printf(" and finished after %llu seconds\n",
250 } else if (ss
->canceled
) {
251 printf(" and was aborted after %llu seconds\n",
254 printf(", running for %llu seconds\n", ss
->duration
);
258 static void print_scrub_dev(struct btrfs_ioctl_dev_info_args
*di
,
259 struct btrfs_scrub_progress
*p
, int raw
,
260 const char *append
, struct scrub_stats
*ss
)
262 printf("scrub device %s (id %llu) %s\n", di
->path
, di
->devid
,
263 append
? append
: "");
271 print_scrub_summary(p
);
275 static void print_fs_stat(struct scrub_fs_stat
*fs_stat
, int raw
)
277 _print_scrub_ss(&fs_stat
->s
);
280 print_scrub_full(&fs_stat
->p
);
282 print_scrub_summary(&fs_stat
->p
);
285 static void free_history(struct scrub_file_record
**last_scrubs
)
287 struct scrub_file_record
**l
= last_scrubs
;
296 * cancels a running scrub and makes the master process record the current
297 * progress status before exiting.
299 static int cancel_fd
= -1;
300 static void scrub_sigint_record_progress(int signal
)
304 ret
= ioctl(cancel_fd
, BTRFS_IOC_SCRUB_CANCEL
, NULL
);
306 perror("Scrub cancel failed");
309 static int scrub_handle_sigint_parent(void)
311 struct sigaction sa
= {
312 .sa_handler
= SIG_IGN
,
313 .sa_flags
= SA_RESTART
,
316 return sigaction(SIGINT
, &sa
, NULL
);
319 static int scrub_handle_sigint_child(int fd
)
321 struct sigaction sa
= {
322 .sa_handler
= fd
== -1 ? SIG_DFL
: scrub_sigint_record_progress
,
326 return sigaction(SIGINT
, &sa
, NULL
);
329 static int scrub_datafile(const char *fn_base
, const char *fn_local
,
330 const char *fn_tmp
, char *datafile
, int size
)
335 datafile
[end
+ 1] = '\0';
336 strncpy(datafile
, fn_base
, end
);
337 ret
= strlen(datafile
);
343 strncpy(datafile
+ ret
+ 1, fn_local
, end
- ret
- 1);
344 ret
= strlen(datafile
);
351 strncpy(datafile
+ ret
+ 1, fn_tmp
, end
- ret
- 1);
352 ret
= strlen(datafile
);
361 static int scrub_open_file(const char *datafile
, int m
)
366 fd
= open(datafile
, m
, 0600);
370 ret
= flock(fd
, LOCK_EX
|LOCK_NB
);
380 static int scrub_open_file_r(const char *fn_base
, const char *fn_local
)
383 char datafile
[BTRFS_PATH_NAME_MAX
+ 1];
384 ret
= scrub_datafile(fn_base
, fn_local
, NULL
,
385 datafile
, sizeof(datafile
));
388 return scrub_open_file(datafile
, O_RDONLY
);
391 static int scrub_open_file_w(const char *fn_base
, const char *fn_local
,
395 char datafile
[BTRFS_PATH_NAME_MAX
+ 1];
396 ret
= scrub_datafile(fn_base
, fn_local
, tmp
,
397 datafile
, sizeof(datafile
));
400 return scrub_open_file(datafile
, O_WRONLY
|O_CREAT
);
403 static int scrub_rename_file(const char *fn_base
, const char *fn_local
,
407 char datafile_old
[BTRFS_PATH_NAME_MAX
+ 1];
408 char datafile_new
[BTRFS_PATH_NAME_MAX
+ 1];
409 ret
= scrub_datafile(fn_base
, fn_local
, tmp
,
410 datafile_old
, sizeof(datafile_old
));
413 ret
= scrub_datafile(fn_base
, fn_local
, NULL
,
414 datafile_new
, sizeof(datafile_new
));
417 ret
= rename(datafile_old
, datafile_new
);
418 return ret
? -errno
: 0;
421 #define _SCRUB_KVREAD(ret, i, name, avail, l, dest) if (ret == 0) { \
422 ret = scrub_kvread(i, sizeof(#name), avail, l, #name, dest.name); \
426 * returns 0 if the key did not match (nothing was read)
427 * 1 if the key did match (success)
428 * -1 if the key did match and an error occured
430 static int scrub_kvread(int *i
, int len
, int avail
, const char *buf
,
431 const char *key
, u64
*dest
)
435 if (*i
+ len
+ 1 < avail
&& strncmp(&buf
[*i
], key
, len
- 1) == 0) {
440 for (j
= 0; isdigit(buf
[*i
+ j
]) && *i
+ j
< avail
; ++j
)
444 *dest
= atoll(&buf
[*i
]);
452 #define _SCRUB_INVALID do { \
454 fprintf(stderr, "WARNING: invalid data in line %d pos " \
455 "%d state %d (near \"%.*s\") at %s:%d\n", \
456 lineno, i, state, 20 > avail ? avail : 20, \
457 l + i, __FILE__, __LINE__); \
461 static struct scrub_file_record
**scrub_read_file(int fd
, int report_errors
)
474 char empty_uuid
[BTRFS_FSID_SIZE
] = {0};
475 struct scrub_file_record
**p
= NULL
;
478 return ERR_PTR(-EINVAL
);
481 old_avail
= avail
- i
;
482 BUG_ON(old_avail
< 0);
484 memmove(l
, l
+ i
, old_avail
);
485 avail
= read(fd
, l
+ old_avail
, sizeof(l
) - old_avail
);
488 if (avail
== 0 && old_avail
== 0) {
490 memcmp(p
[curr
]->fsid
, empty_uuid
, BTRFS_FSID_SIZE
) == 0) {
492 } else if (curr
== -1) {
493 p
= ERR_PTR(-ENODATA
);
498 return ERR_PTR(-errno
);
504 case 0: /* start of file */
505 ret
= scrub_kvread(&i
,
506 sizeof(SCRUB_FILE_VERSION_PREFIX
), avail
, l
,
507 SCRUB_FILE_VERSION_PREFIX
, &version
);
510 if (version
!= atoll(SCRUB_FILE_VERSION
))
511 return ERR_PTR(-ENOTSUP
);
514 case 1: /* start of line, alloc */
516 * this state makes sure we have a complete line in
517 * further processing, so we don't need wrap-tracking
520 if (!eof
&& !memchr(l
+ i
, '\n', avail
- i
))
523 if (curr
> -1 && memcmp(p
[curr
]->fsid
, empty_uuid
,
524 BTRFS_FSID_SIZE
) == 0) {
529 p
= realloc(p
, (curr
+ 2) * sizeof(*p
));
531 p
[curr
] = malloc(sizeof(**p
));
533 return ERR_PTR(-errno
);
534 memset(p
[curr
], 0, sizeof(**p
));
538 case 2: /* start of line, skip space */
539 while (isspace(l
[i
]) && i
< avail
) {
545 (!eof
&& !memchr(l
+ i
, '\n', avail
- i
)))
549 case 3: /* read fsid */
552 for (j
= 0; l
[i
+ j
] != ':' && i
+ j
< avail
; ++j
)
554 if (i
+ j
+ 1 >= avail
)
559 ret
= uuid_parse(l
+ i
, p
[curr
]->fsid
);
565 case 4: /* read dev id */
566 for (j
= 0; isdigit(l
[i
+ j
]) && i
+j
< avail
; ++j
)
568 if (j
== 0 || i
+ j
+ 1 >= avail
)
570 p
[curr
]->devid
= atoll(&l
[i
]);
574 case 5: /* read key/value pair */
576 _SCRUB_KVREAD(ret
, &i
, data_extents_scrubbed
, avail
, l
,
578 _SCRUB_KVREAD(ret
, &i
, data_extents_scrubbed
, avail
, l
,
580 _SCRUB_KVREAD(ret
, &i
, tree_extents_scrubbed
, avail
, l
,
582 _SCRUB_KVREAD(ret
, &i
, data_bytes_scrubbed
, avail
, l
,
584 _SCRUB_KVREAD(ret
, &i
, tree_bytes_scrubbed
, avail
, l
,
586 _SCRUB_KVREAD(ret
, &i
, read_errors
, avail
, l
,
588 _SCRUB_KVREAD(ret
, &i
, csum_errors
, avail
, l
,
590 _SCRUB_KVREAD(ret
, &i
, verify_errors
, avail
, l
,
592 _SCRUB_KVREAD(ret
, &i
, no_csum
, avail
, l
,
594 _SCRUB_KVREAD(ret
, &i
, csum_discards
, avail
, l
,
596 _SCRUB_KVREAD(ret
, &i
, super_errors
, avail
, l
,
598 _SCRUB_KVREAD(ret
, &i
, malloc_errors
, avail
, l
,
600 _SCRUB_KVREAD(ret
, &i
, uncorrectable_errors
, avail
, l
,
602 _SCRUB_KVREAD(ret
, &i
, corrected_errors
, avail
, l
,
604 _SCRUB_KVREAD(ret
, &i
, last_physical
, avail
, l
,
606 _SCRUB_KVREAD(ret
, &i
, finished
, avail
, l
,
608 _SCRUB_KVREAD(ret
, &i
, t_start
, avail
, l
,
609 (u64
*)&p
[curr
]->stats
);
610 _SCRUB_KVREAD(ret
, &i
, t_resumed
, avail
, l
,
611 (u64
*)&p
[curr
]->stats
);
612 _SCRUB_KVREAD(ret
, &i
, duration
, avail
, l
,
613 (u64
*)&p
[curr
]->stats
);
614 _SCRUB_KVREAD(ret
, &i
, canceled
, avail
, l
,
620 case 6: /* after number */
623 else if (l
[i
] == '\n')
629 case 99: /* skip rest of line */
634 if (l
[i
- 1] == '\n') {
646 static int scrub_write_buf(int fd
, const void *data
, int len
)
649 ret
= write(fd
, data
, len
);
653 static int scrub_writev(int fd
, char *buf
, int max
, const char *fmt
, ...)
654 __attribute__ ((format (printf
, 4, 5)));
655 static int scrub_writev(int fd
, char *buf
, int max
, const char *fmt
, ...)
661 ret
= vsnprintf(buf
, max
, fmt
, args
);
665 return scrub_write_buf(fd
, buf
, ret
);
668 #define _SCRUB_SUM(dest, data, name) dest->scrub_args.progress.name = \
669 data->resumed->p.name + data->scrub_args.progress.name
671 static struct scrub_progress
*scrub_resumed_stats(struct scrub_progress
*data
,
672 struct scrub_progress
*dest
)
674 if (!data
->resumed
|| data
->skip
)
677 _SCRUB_SUM(dest
, data
, data_extents_scrubbed
);
678 _SCRUB_SUM(dest
, data
, tree_extents_scrubbed
);
679 _SCRUB_SUM(dest
, data
, data_bytes_scrubbed
);
680 _SCRUB_SUM(dest
, data
, tree_bytes_scrubbed
);
681 _SCRUB_SUM(dest
, data
, read_errors
);
682 _SCRUB_SUM(dest
, data
, csum_errors
);
683 _SCRUB_SUM(dest
, data
, verify_errors
);
684 _SCRUB_SUM(dest
, data
, no_csum
);
685 _SCRUB_SUM(dest
, data
, csum_discards
);
686 _SCRUB_SUM(dest
, data
, super_errors
);
687 _SCRUB_SUM(dest
, data
, malloc_errors
);
688 _SCRUB_SUM(dest
, data
, uncorrectable_errors
);
689 _SCRUB_SUM(dest
, data
, corrected_errors
);
690 _SCRUB_SUM(dest
, data
, last_physical
);
691 dest
->stats
.canceled
= data
->stats
.canceled
;
692 dest
->stats
.finished
= data
->stats
.finished
;
693 dest
->stats
.t_resumed
= data
->stats
.t_start
;
694 dest
->stats
.t_start
= data
->resumed
->stats
.t_start
;
695 dest
->stats
.duration
= data
->resumed
->stats
.duration
+
696 data
->stats
.duration
;
697 dest
->scrub_args
.devid
= data
->scrub_args
.devid
;
701 #define _SCRUB_KVWRITE(fd, buf, name, use) \
702 scrub_kvwrite(fd, buf, sizeof(buf), #name, \
703 use->scrub_args.progress.name)
705 #define _SCRUB_KVWRITE_STATS(fd, buf, name, use) \
706 scrub_kvwrite(fd, buf, sizeof(buf), #name, \
709 static int scrub_kvwrite(int fd
, char *buf
, int max
, const char *key
, u64 val
)
711 return scrub_writev(fd
, buf
, max
, "|%s:%lld", key
, val
);
714 static int scrub_write_file(int fd
, const char *fsid
,
715 struct scrub_progress
*data
, int n
)
720 struct scrub_progress local
;
721 struct scrub_progress
*use
;
726 /* each -1 is to subtract one \0 byte, the + 2 is for ':' and '\n' */
727 ret
= scrub_write_buf(fd
, SCRUB_FILE_VERSION_PREFIX
":"
728 SCRUB_FILE_VERSION
"\n",
729 (sizeof(SCRUB_FILE_VERSION_PREFIX
) - 1) +
730 (sizeof(SCRUB_FILE_VERSION
) - 1) + 2);
734 for (i
= 0; i
< n
; ++i
) {
735 use
= scrub_resumed_stats(&data
[i
], &local
);
736 if (scrub_write_buf(fd
, fsid
, strlen(fsid
)) ||
737 scrub_write_buf(fd
, ":", 1) ||
738 scrub_writev(fd
, buf
, sizeof(buf
), "%lld",
739 use
->scrub_args
.devid
) ||
740 scrub_write_buf(fd
, buf
, ret
) ||
741 _SCRUB_KVWRITE(fd
, buf
, data_extents_scrubbed
, use
) ||
742 _SCRUB_KVWRITE(fd
, buf
, tree_extents_scrubbed
, use
) ||
743 _SCRUB_KVWRITE(fd
, buf
, data_bytes_scrubbed
, use
) ||
744 _SCRUB_KVWRITE(fd
, buf
, tree_bytes_scrubbed
, use
) ||
745 _SCRUB_KVWRITE(fd
, buf
, read_errors
, use
) ||
746 _SCRUB_KVWRITE(fd
, buf
, csum_errors
, use
) ||
747 _SCRUB_KVWRITE(fd
, buf
, verify_errors
, use
) ||
748 _SCRUB_KVWRITE(fd
, buf
, no_csum
, use
) ||
749 _SCRUB_KVWRITE(fd
, buf
, csum_discards
, use
) ||
750 _SCRUB_KVWRITE(fd
, buf
, super_errors
, use
) ||
751 _SCRUB_KVWRITE(fd
, buf
, malloc_errors
, use
) ||
752 _SCRUB_KVWRITE(fd
, buf
, uncorrectable_errors
, use
) ||
753 _SCRUB_KVWRITE(fd
, buf
, corrected_errors
, use
) ||
754 _SCRUB_KVWRITE(fd
, buf
, last_physical
, use
) ||
755 _SCRUB_KVWRITE_STATS(fd
, buf
, t_start
, use
) ||
756 _SCRUB_KVWRITE_STATS(fd
, buf
, t_resumed
, use
) ||
757 _SCRUB_KVWRITE_STATS(fd
, buf
, duration
, use
) ||
758 _SCRUB_KVWRITE_STATS(fd
, buf
, canceled
, use
) ||
759 _SCRUB_KVWRITE_STATS(fd
, buf
, finished
, use
) ||
760 scrub_write_buf(fd
, "\n", 1)) {
768 static int scrub_write_progress(pthread_mutex_t
*m
, const char *fsid
,
769 struct scrub_progress
*data
, int n
)
776 ret
= pthread_setcancelstate(PTHREAD_CANCEL_DISABLE
, &old
);
782 ret
= pthread_mutex_lock(m
);
788 fd
= scrub_open_file_w(SCRUB_DATA_FILE
, fsid
, "tmp");
793 err
= scrub_write_file(fd
, fsid
, data
, n
);
796 err
= scrub_rename_file(SCRUB_DATA_FILE
, fsid
, "tmp");
807 ret
= pthread_mutex_unlock(m
);
812 ret
= pthread_setcancelstate(PTHREAD_CANCEL_ENABLE
, &old
);
820 static void *scrub_one_dev(void *ctx
)
822 struct scrub_progress
*sp
= ctx
;
826 sp
->stats
.canceled
= 0;
827 sp
->stats
.duration
= 0;
828 sp
->stats
.finished
= 0;
830 ret
= syscall(SYS_ioprio_set
, IOPRIO_WHO_PROCESS
, 0,
831 IOPRIO_PRIO_VALUE(sp
->ioprio_class
,
832 sp
->ioprio_classdata
));
835 "WARNING: setting ioprio failed: %s (ignored).\n",
838 ret
= ioctl(sp
->fd
, BTRFS_IOC_SCRUB
, &sp
->scrub_args
);
839 gettimeofday(&tv
, NULL
);
841 sp
->stats
.duration
= tv
.tv_sec
- sp
->stats
.t_start
;
842 sp
->stats
.canceled
= !!ret
;
843 sp
->ioctl_errno
= errno
;
844 ret
= pthread_mutex_lock(&sp
->progress_mutex
);
846 return ERR_PTR(-ret
);
847 sp
->stats
.finished
= 1;
848 ret
= pthread_mutex_unlock(&sp
->progress_mutex
);
850 return ERR_PTR(-ret
);
855 static void *progress_one_dev(void *ctx
)
857 struct scrub_progress
*sp
= ctx
;
859 sp
->ret
= ioctl(sp
->fd
, BTRFS_IOC_SCRUB_PROGRESS
, &sp
->scrub_args
);
860 sp
->ioctl_errno
= errno
;
865 /* nb: returns a negative errno via ERR_PTR */
866 static void *scrub_progress_cycle(void *ctx
)
869 int perr
= 0; /* positive / pthread error returns */
872 char fsid
[BTRFS_UUID_UNPARSED_SIZE
];
873 struct scrub_progress
*sp
;
874 struct scrub_progress
*sp_last
;
875 struct scrub_progress
*sp_shared
;
877 struct scrub_progress_cycle
*spc
= ctx
;
878 int ndev
= spc
->fi
->num_devices
;
882 struct pollfd accept_poll_fd
= {
887 struct pollfd write_poll_fd
= {
891 struct sockaddr_un peer
;
892 socklen_t peer_size
= sizeof(peer
);
894 perr
= pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS
, &old
);
898 uuid_unparse(spc
->fi
->fsid
, fsid
);
900 for (i
= 0; i
< ndev
; ++i
) {
901 sp
= &spc
->progress
[i
];
902 sp_last
= &spc
->progress
[i
+ ndev
];
903 sp_shared
= &spc
->shared_progress
[i
];
904 sp
->scrub_args
.devid
= sp_last
->scrub_args
.devid
=
905 sp_shared
->scrub_args
.devid
;
906 sp
->fd
= sp_last
->fd
= spc
->fdmnt
;
907 sp
->stats
.t_start
= sp_last
->stats
.t_start
=
908 sp_shared
->stats
.t_start
;
909 sp
->resumed
= sp_last
->resumed
= sp_shared
->resumed
;
910 sp
->skip
= sp_last
->skip
= sp_shared
->skip
;
911 sp
->stats
.finished
= sp_last
->stats
.finished
=
912 sp_shared
->stats
.finished
;
916 ret
= poll(&accept_poll_fd
, 1, 5 * 1000);
922 peer_fd
= accept(spc
->prg_fd
, (struct sockaddr
*)&peer
,
924 gettimeofday(&tv
, NULL
);
927 for (i
= 0; i
< ndev
; ++i
) {
928 sp
= &spc
->progress
[this * ndev
+ i
];
929 sp_last
= &spc
->progress
[last
* ndev
+ i
];
930 sp_shared
= &spc
->shared_progress
[i
];
931 if (sp
->stats
.finished
)
933 progress_one_dev(sp
);
934 sp
->stats
.duration
= tv
.tv_sec
- sp
->stats
.t_start
;
937 if (sp
->ioctl_errno
!= ENOTCONN
&&
938 sp
->ioctl_errno
!= ENODEV
) {
939 ret
= -sp
->ioctl_errno
;
943 * scrub finished or device removed, check the
944 * finished flag. if unset, just use the last
945 * result we got for the current write and go
946 * on. flag should be set on next cycle, then.
948 perr
= pthread_setcancelstate(
949 PTHREAD_CANCEL_DISABLE
, &old
);
952 perr
= pthread_mutex_lock(&sp_shared
->progress_mutex
);
955 if (!sp_shared
->stats
.finished
) {
956 perr
= pthread_mutex_unlock(
957 &sp_shared
->progress_mutex
);
960 perr
= pthread_setcancelstate(
961 PTHREAD_CANCEL_ENABLE
, &old
);
964 memcpy(sp
, sp_last
, sizeof(*sp
));
967 perr
= pthread_mutex_unlock(&sp_shared
->progress_mutex
);
970 perr
= pthread_setcancelstate(
971 PTHREAD_CANCEL_ENABLE
, &old
);
974 memcpy(sp
, sp_shared
, sizeof(*sp
));
975 memcpy(sp_last
, sp_shared
, sizeof(*sp
));
978 write_poll_fd
.fd
= peer_fd
;
979 ret
= poll(&write_poll_fd
, 1, 0);
985 ret
= scrub_write_file(
987 &spc
->progress
[this * ndev
], ndev
);
996 ret
= scrub_write_progress(spc
->write_mutex
, fsid
,
997 &spc
->progress
[this * ndev
], ndev
);
1006 return ERR_PTR(ret
);
1009 static struct scrub_file_record
*last_dev_scrub(
1010 struct scrub_file_record
*const *const past_scrubs
, u64 devid
)
1014 if (!past_scrubs
|| IS_ERR(past_scrubs
))
1017 for (i
= 0; past_scrubs
[i
]; ++i
)
1018 if (past_scrubs
[i
]->devid
== devid
)
1019 return past_scrubs
[i
];
1024 static int mkdir_p(char *path
)
1029 for (i
= 1; i
< strlen(path
); ++i
) {
1033 ret
= mkdir(path
, 0777);
1034 if (ret
&& errno
!= EEXIST
)
1042 static int is_scrub_running_on_fs(struct btrfs_ioctl_fs_info_args
*fi_args
,
1043 struct btrfs_ioctl_dev_info_args
*di_args
,
1044 struct scrub_file_record
**past_scrubs
)
1048 if (!fi_args
|| !di_args
|| !past_scrubs
)
1051 for (i
= 0; i
< fi_args
->num_devices
; i
++) {
1052 struct scrub_file_record
*sfr
=
1053 last_dev_scrub(past_scrubs
, di_args
[i
].devid
);
1057 if (!(sfr
->stats
.finished
|| sfr
->stats
.canceled
))
1063 static const char * const cmd_scrub_start_usage
[];
1064 static const char * const cmd_scrub_resume_usage
[];
1066 static int scrub_start(int argc
, char **argv
, int resume
)
1076 int e_uncorrectable
= 0;
1077 int e_correctable
= 0;
1080 int do_background
= 1;
1086 int do_stats_per_dev
= 0;
1087 int ioprio_class
= IOPRIO_CLASS_IDLE
;
1088 int ioprio_classdata
= 0;
1092 struct btrfs_ioctl_fs_info_args fi_args
;
1093 struct btrfs_ioctl_dev_info_args
*di_args
= NULL
;
1094 struct scrub_progress
*sp
= NULL
;
1095 struct scrub_fs_stat fs_stat
;
1097 struct sockaddr_un addr
= {
1098 .sun_family
= AF_UNIX
,
1100 pthread_t
*t_devs
= NULL
;
1102 struct scrub_file_record
**past_scrubs
= NULL
;
1103 struct scrub_file_record
*last_scrub
= NULL
;
1104 char *datafile
= strdup(SCRUB_DATA_FILE
);
1105 char fsid
[BTRFS_UUID_UNPARSED_SIZE
];
1106 char sock_path
[BTRFS_PATH_NAME_MAX
+ 1] = "";
1107 struct scrub_progress_cycle spc
;
1108 pthread_mutex_t spc_write_mutex
= PTHREAD_MUTEX_INITIALIZER
;
1111 DIR *dirstream
= NULL
;
1113 int nothing_to_resume
= 0;
1116 while ((c
= getopt(argc
, argv
, "BdqrRc:n:f")) != -1) {
1124 do_stats_per_dev
= 1;
1136 ioprio_class
= (int)strtol(optarg
, NULL
, 10);
1139 ioprio_classdata
= (int)strtol(optarg
, NULL
, 10);
1146 usage(resume
? cmd_scrub_resume_usage
:
1147 cmd_scrub_start_usage
);
1151 /* try to catch most error cases before forking */
1153 if (check_argc_exact(argc
- optind
, 1)) {
1154 usage(resume
? cmd_scrub_resume_usage
:
1155 cmd_scrub_start_usage
);
1158 spc
.progress
= NULL
;
1159 if (do_quiet
&& do_print
)
1162 if (mkdir_p(datafile
)) {
1163 ERR(!do_quiet
, "WARNING: cannot create scrub data "
1164 "file, mkdir %s failed: %s. Status recording "
1165 "disabled\n", datafile
, strerror(errno
));
1170 path
= argv
[optind
];
1172 fdmnt
= open_path_or_dev_mnt(path
, &dirstream
);
1175 ERR(!do_quiet
, "ERROR: can't access '%s'\n", path
);
1179 ret
= get_fs_info(path
, &fi_args
, &di_args
);
1181 ERR(!do_quiet
, "ERROR: getting dev info for scrub failed: "
1182 "%s\n", strerror(-ret
));
1186 if (!fi_args
.num_devices
) {
1187 ERR(!do_quiet
, "ERROR: no devices found\n");
1192 uuid_unparse(fi_args
.fsid
, fsid
);
1193 fdres
= scrub_open_file_r(SCRUB_DATA_FILE
, fsid
);
1194 if (fdres
< 0 && fdres
!= -ENOENT
) {
1195 ERR(!do_quiet
, "WARNING: failed to open status file: "
1196 "%s\n", strerror(-fdres
));
1197 } else if (fdres
>= 0) {
1198 past_scrubs
= scrub_read_file(fdres
, !do_quiet
);
1199 if (IS_ERR(past_scrubs
))
1200 ERR(!do_quiet
, "WARNING: failed to read status file: "
1201 "%s\n", strerror(-PTR_ERR(past_scrubs
)));
1206 * check whether any involved device is already busy running a
1207 * scrub. This would cause damaged status messages and the state
1208 * "aborted" without the explanation that a scrub was already
1209 * running. Therefore check it first, prevent it and give some
1210 * feedback to the user if scrub is already running.
1211 * Note that if scrub is started with a block device as the
1212 * parameter, only that particular block device is checked. It
1213 * is a normal mode of operation to start scrub on multiple
1214 * single devices, there is no reason to prevent this.
1216 if (!force
&& is_scrub_running_on_fs(&fi_args
, di_args
, past_scrubs
)) {
1218 "ERROR: scrub is already running.\n"
1219 "To cancel use 'btrfs scrub cancel %s'.\n"
1220 "To see the status use 'btrfs scrub status [-d] %s'.\n",
1226 t_devs
= malloc(fi_args
.num_devices
* sizeof(*t_devs
));
1227 sp
= calloc(fi_args
.num_devices
, sizeof(*sp
));
1228 spc
.progress
= calloc(fi_args
.num_devices
* 2, sizeof(*spc
.progress
));
1230 if (!t_devs
|| !sp
|| !spc
.progress
) {
1231 ERR(!do_quiet
, "ERROR: scrub failed: %s", strerror(errno
));
1236 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1237 devid
= di_args
[i
].devid
;
1238 ret
= pthread_mutex_init(&sp
[i
].progress_mutex
, NULL
);
1240 ERR(!do_quiet
, "ERROR: pthread_mutex_init failed: "
1241 "%s\n", strerror(ret
));
1245 last_scrub
= last_dev_scrub(past_scrubs
, devid
);
1246 sp
[i
].scrub_args
.devid
= devid
;
1248 if (resume
&& last_scrub
&& (last_scrub
->stats
.canceled
||
1249 !last_scrub
->stats
.finished
)) {
1251 sp
[i
].scrub_args
.start
= last_scrub
->p
.last_physical
;
1252 sp
[i
].resumed
= last_scrub
;
1253 } else if (resume
) {
1256 sp
[i
].resumed
= last_scrub
;
1260 sp
[i
].scrub_args
.start
= 0ll;
1261 sp
[i
].resumed
= NULL
;
1264 sp
[i
].scrub_args
.end
= (u64
)-1ll;
1265 sp
[i
].scrub_args
.flags
= readonly
? BTRFS_SCRUB_READONLY
: 0;
1266 sp
[i
].ioprio_class
= ioprio_class
;
1267 sp
[i
].ioprio_classdata
= ioprio_classdata
;
1270 if (!n_start
&& !n_resume
) {
1272 printf("scrub: nothing to resume for %s, fsid %s\n",
1274 nothing_to_resume
= 1;
1278 ret
= prg_fd
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1280 ret
= scrub_datafile(SCRUB_PROGRESS_SOCKET_PATH
, fsid
, NULL
,
1281 sock_path
, sizeof(sock_path
));
1282 /* ignore EOVERFLOW, try using a shorter path for the socket */
1283 addr
.sun_path
[sizeof(addr
.sun_path
) - 1] = '\0';
1284 strncpy(addr
.sun_path
, sock_path
, sizeof(addr
.sun_path
) - 1);
1285 ret
= bind(prg_fd
, (struct sockaddr
*)&addr
, sizeof(addr
));
1286 if (ret
!= -1 || errno
!= EADDRINUSE
)
1289 * bind failed with EADDRINUSE. so let's see if anyone answers
1290 * when we make a call to the socket ...
1292 ret
= connect(prg_fd
, (struct sockaddr
*)&addr
, sizeof(addr
));
1293 if (!ret
|| errno
!= ECONNREFUSED
) {
1294 /* ... yes, so scrub must be running. error out */
1295 fprintf(stderr
, "ERROR: scrub already running\n");
1301 * ... no, this means someone left us alone with an unused
1302 * socket in the file system. remove it and try again.
1304 ret
= unlink(sock_path
);
1307 ret
= listen(prg_fd
, 100);
1309 ERR(!do_quiet
, "WARNING: failed to open the progress status "
1310 "socket at %s: %s. Progress cannot be queried\n",
1311 sock_path
[0] ? sock_path
: SCRUB_PROGRESS_SOCKET_PATH
,
1322 /* write all-zero progress file for a start */
1323 ret
= scrub_write_progress(&spc_write_mutex
, fsid
, sp
,
1324 fi_args
.num_devices
);
1326 ERR(!do_quiet
, "WARNING: failed to write the progress "
1327 "status file: %s. Status recording disabled\n",
1333 if (do_background
) {
1336 ERR(!do_quiet
, "ERROR: cannot scrub, fork failed: "
1337 "%s\n", strerror(errno
));
1344 scrub_handle_sigint_parent();
1346 printf("scrub %s on %s, fsid %s (pid=%d)\n",
1347 n_start
? "started" : "resumed",
1355 ERR(!do_quiet
, "ERROR: wait failed: (ret=%d) "
1356 "%s\n", ret
, strerror(errno
));
1360 if (!WIFEXITED(stat
) || WEXITSTATUS(stat
)) {
1361 ERR(!do_quiet
, "ERROR: scrub process failed\n");
1362 err
= WIFEXITED(stat
) ? WEXITSTATUS(stat
) : -1;
1370 scrub_handle_sigint_child(fdmnt
);
1372 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1374 sp
[i
].scrub_args
.progress
= sp
[i
].resumed
->p
;
1375 sp
[i
].stats
= sp
[i
].resumed
->stats
;
1377 sp
[i
].stats
.finished
= 1;
1380 devid
= di_args
[i
].devid
;
1381 gettimeofday(&tv
, NULL
);
1382 sp
[i
].stats
.t_start
= tv
.tv_sec
;
1383 ret
= pthread_create(&t_devs
[i
], NULL
,
1384 scrub_one_dev
, &sp
[i
]);
1387 fprintf(stderr
, "ERROR: creating "
1388 "scrub_one_dev[%llu] thread failed: "
1389 "%s\n", devid
, strerror(ret
));
1396 spc
.prg_fd
= prg_fd
;
1397 spc
.do_record
= do_record
;
1398 spc
.write_mutex
= &spc_write_mutex
;
1399 spc
.shared_progress
= sp
;
1401 ret
= pthread_create(&t_prog
, NULL
, scrub_progress_cycle
, &spc
);
1404 fprintf(stderr
, "ERROR: creating progress thread "
1405 "failed: %s\n", strerror(ret
));
1411 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1414 devid
= di_args
[i
].devid
;
1415 ret
= pthread_join(t_devs
[i
], NULL
);
1418 fprintf(stderr
, "ERROR: pthread_join failed "
1419 "for scrub_one_dev[%llu]: %s\n", devid
,
1424 if (sp
[i
].ret
&& sp
[i
].ioctl_errno
== ENODEV
) {
1426 fprintf(stderr
, "WARNING: device %lld not "
1427 "present\n", devid
);
1430 if (sp
[i
].ret
&& sp
[i
].ioctl_errno
== ECANCELED
) {
1432 } else if (sp
[i
].ret
) {
1434 fprintf(stderr
, "ERROR: scrubbing %s failed "
1435 "for device id %lld (%s)\n", path
,
1436 devid
, strerror(sp
[i
].ioctl_errno
));
1440 if (sp
[i
].scrub_args
.progress
.uncorrectable_errors
> 0)
1442 if (sp
[i
].scrub_args
.progress
.corrected_errors
> 0
1443 || sp
[i
].scrub_args
.progress
.unverified_errors
> 0)
1448 const char *append
= "done";
1449 if (!do_stats_per_dev
)
1450 init_fs_stat(&fs_stat
);
1451 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1452 if (do_stats_per_dev
) {
1453 print_scrub_dev(&di_args
[i
],
1454 &sp
[i
].scrub_args
.progress
,
1456 sp
[i
].ret
? "canceled" : "done",
1460 append
= "canceled";
1461 add_to_fs_stat(&sp
[i
].scrub_args
.progress
,
1462 &sp
[i
].stats
, &fs_stat
);
1465 if (!do_stats_per_dev
) {
1466 printf("scrub %s for %s\n", append
, fsid
);
1467 print_fs_stat(&fs_stat
, print_raw
);
1471 ret
= pthread_cancel(t_prog
);
1473 ret
= pthread_join(t_prog
, &terr
);
1475 /* check for errors from the handling of the progress thread */
1476 if (do_print
&& ret
) {
1477 fprintf(stderr
, "ERROR: progress thread handling failed: %s\n",
1481 /* check for errors returned from the progress thread itself */
1482 if (do_print
&& terr
&& terr
!= PTHREAD_CANCELED
) {
1483 fprintf(stderr
, "ERROR: recording progress "
1484 "failed: %s\n", strerror(-PTR_ERR(terr
)));
1488 ret
= scrub_write_progress(&spc_write_mutex
, fsid
, sp
,
1489 fi_args
.num_devices
);
1490 if (ret
&& do_print
) {
1491 fprintf(stderr
, "ERROR: failed to record the result: "
1492 "%s\n", strerror(-ret
));
1496 scrub_handle_sigint_child(-1);
1499 free_history(past_scrubs
);
1509 close_file_or_dir(fdmnt
, dirstream
);
1511 if (nothing_to_resume
)
1517 if (e_uncorrectable
)
1522 static const char * const cmd_scrub_start_usage
[] = {
1523 "btrfs scrub start [-BdqrRf] [-c ioprio_class -n ioprio_classdata] <path>|<device>",
1524 "Start a new scrub",
1526 "-B do not background",
1527 "-d stats per device (-B only)",
1529 "-r read only mode",
1530 "-R raw print mode, print full data instead of summary"
1531 "-c set ioprio class (see ionice(1) manpage)",
1532 "-n set ioprio classdata (see ionice(1) manpage)",
1533 "-f force to skip checking whether scrub has started/resumed in userspace ",
1534 " this is useful when scrub stats record file is damaged",
1538 static int cmd_scrub_start(int argc
, char **argv
)
1540 return scrub_start(argc
, argv
, 0);
1543 static const char * const cmd_scrub_cancel_usage
[] = {
1544 "btrfs scrub cancel <path>|<device>",
1545 "Cancel a running scrub",
1549 static int cmd_scrub_cancel(int argc
, char **argv
)
1554 DIR *dirstream
= NULL
;
1556 if (check_argc_exact(argc
, 2))
1557 usage(cmd_scrub_cancel_usage
);
1561 fdmnt
= open_path_or_dev_mnt(path
, &dirstream
);
1563 fprintf(stderr
, "ERROR: could not open %s: %s\n",
1564 path
, strerror(errno
));
1569 ret
= ioctl(fdmnt
, BTRFS_IOC_SCRUB_CANCEL
, NULL
);
1572 fprintf(stderr
, "ERROR: scrub cancel failed on %s: %s\n", path
,
1573 errno
== ENOTCONN
? "not running" : strerror(errno
));
1574 if (errno
== ENOTCONN
)
1582 printf("scrub cancelled\n");
1585 close_file_or_dir(fdmnt
, dirstream
);
1589 static const char * const cmd_scrub_resume_usage
[] = {
1590 "btrfs scrub resume [-BdqrR] [-c ioprio_class -n ioprio_classdata] <path>|<device>",
1591 "Resume previously canceled or interrupted scrub",
1593 "-B do not background",
1594 "-d stats per device (-B only)",
1596 "-r read only mode",
1597 "-c set ioprio class (see ionice(1) manpage)",
1598 "-n set ioprio classdata (see ionice(1) manpage)",
1602 static int cmd_scrub_resume(int argc
, char **argv
)
1604 return scrub_start(argc
, argv
, 1);
1607 static const char * const cmd_scrub_status_usage
[] = {
1608 "btrfs scrub status [-dR] <path>|<device>",
1609 "Show status of running or finished scrub",
1611 "-d stats per device",
1612 "-R print raw stats",
1616 static int cmd_scrub_status(int argc
, char **argv
)
1619 struct btrfs_ioctl_fs_info_args fi_args
;
1620 struct btrfs_ioctl_dev_info_args
*di_args
= NULL
;
1621 struct scrub_file_record
**past_scrubs
= NULL
;
1622 struct scrub_file_record
*last_scrub
;
1623 struct scrub_fs_stat fs_stat
;
1624 struct sockaddr_un addr
= {
1625 .sun_family
= AF_UNIX
,
1631 int do_stats_per_dev
= 0;
1633 char fsid
[BTRFS_UUID_UNPARSED_SIZE
];
1636 DIR *dirstream
= NULL
;
1639 while ((c
= getopt(argc
, argv
, "dR")) != -1) {
1642 do_stats_per_dev
= 1;
1649 usage(cmd_scrub_status_usage
);
1653 if (check_argc_exact(argc
- optind
, 1))
1654 usage(cmd_scrub_status_usage
);
1656 path
= argv
[optind
];
1658 fdmnt
= open_path_or_dev_mnt(path
, &dirstream
);
1661 fprintf(stderr
, "ERROR: can't access '%s'\n", path
);
1665 ret
= get_fs_info(path
, &fi_args
, &di_args
);
1667 fprintf(stderr
, "ERROR: getting dev info for scrub failed: "
1668 "%s\n", strerror(-ret
));
1672 if (!fi_args
.num_devices
) {
1673 fprintf(stderr
, "ERROR: no devices found\n");
1678 uuid_unparse(fi_args
.fsid
, fsid
);
1680 fdres
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1682 fprintf(stderr
, "ERROR: failed to create socket to "
1683 "receive progress information: %s\n",
1688 scrub_datafile(SCRUB_PROGRESS_SOCKET_PATH
, fsid
,
1689 NULL
, addr
.sun_path
, sizeof(addr
.sun_path
));
1690 /* ignore EOVERFLOW, just use shorter name and hope for the best */
1691 addr
.sun_path
[sizeof(addr
.sun_path
) - 1] = '\0';
1692 ret
= connect(fdres
, (struct sockaddr
*)&addr
, sizeof(addr
));
1695 fdres
= scrub_open_file_r(SCRUB_DATA_FILE
, fsid
);
1696 if (fdres
< 0 && fdres
!= -ENOENT
) {
1697 fprintf(stderr
, "WARNING: failed to open status file: "
1698 "%s\n", strerror(-fdres
));
1705 past_scrubs
= scrub_read_file(fdres
, 1);
1706 if (IS_ERR(past_scrubs
))
1707 fprintf(stderr
, "WARNING: failed to read status: %s\n",
1708 strerror(-PTR_ERR(past_scrubs
)));
1711 printf("scrub status for %s\n", fsid
);
1713 if (do_stats_per_dev
) {
1714 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1715 last_scrub
= last_dev_scrub(past_scrubs
,
1718 print_scrub_dev(&di_args
[i
], NULL
, print_raw
,
1722 print_scrub_dev(&di_args
[i
], &last_scrub
->p
, print_raw
,
1723 last_scrub
->stats
.finished
?
1724 "history" : "status",
1725 &last_scrub
->stats
);
1728 init_fs_stat(&fs_stat
);
1729 for (i
= 0; i
< fi_args
.num_devices
; ++i
) {
1730 last_scrub
= last_dev_scrub(past_scrubs
,
1734 add_to_fs_stat(&last_scrub
->p
, &last_scrub
->stats
,
1737 print_fs_stat(&fs_stat
, print_raw
);
1741 free_history(past_scrubs
);
1745 close_file_or_dir(fdmnt
, dirstream
);
1750 const struct cmd_group scrub_cmd_group
= {
1751 scrub_cmd_group_usage
, NULL
, {
1752 { "start", cmd_scrub_start
, cmd_scrub_start_usage
, NULL
, 0 },
1753 { "cancel", cmd_scrub_cancel
, cmd_scrub_cancel_usage
, NULL
, 0 },
1754 { "resume", cmd_scrub_resume
, cmd_scrub_resume_usage
, NULL
, 0 },
1755 { "status", cmd_scrub_status
, cmd_scrub_status_usage
, NULL
, 0 },
1760 int cmd_scrub(int argc
, char **argv
)
1762 return handle_command_group(&scrub_cmd_group
, argc
, argv
);