10 #include <sys/ioctl.h>
12 #include <sys/types.h>
15 #include "libbcachefs/bcachefs.h"
16 #include "libbcachefs/bcachefs_ioctl.h"
17 #include "libbcachefs/errcode.h"
18 #include "libbcachefs/journal.h"
19 #include "libbcachefs/super-io.h"
21 #include "libbcachefs.h"
22 #include "libbcachefs/opts.h"
23 #include "tools-util.h"
25 int device_usage(void)
27 puts("bcachefs device - manage devices within a running filesystem\n"
28 "Usage: bcachefs device <CMD> [OPTION]\n"
31 " add add a new device to an existing filesystem\n"
32 " remove remove a device from an existing filesystem\n"
33 " online re-add an existing member to a filesystem\n"
34 " offline take a device offline, without removing it\n"
35 " evacuate migrate data off a specific device\n"
36 " set-state mark a device as failed\n"
37 " resize resize filesystem on a device\n"
38 " resize-journal resize journal on a device\n"
40 "Report bugs to <linux-bcachefs@vger.kernel.org>");
44 static void device_add_usage(void)
46 puts("bcachefs device add - add a device to an existing filesystem\n"
47 "Usage: bcachefs device add [OPTION]... filesystem device\n"
50 " -S, --fs_size=size Size of filesystem on device\n"
51 " -B, --bucket=size Bucket size\n"
52 " -D, --discard Enable discards\n"
53 " -l, --label=label Disk label\n"
54 " -f, --force Use device even if it appears to already be formatted\n"
55 " -h, --help Display this help and exit\n"
57 "Report bugs to <linux-bcachefs@vger.kernel.org>");
60 int cmd_device_add(int argc, char *argv[])
62 static const struct option longopts[] = {
63 { "fs_size", required_argument, NULL, 'S' },
64 { "bucket", required_argument, NULL, 'B' },
65 { "discard", no_argument, NULL, 'D' },
66 { "label", required_argument, NULL, 'l' },
67 { "force", no_argument, NULL, 'f' },
68 { "help", no_argument, NULL, 'h' },
71 struct format_opts format_opts = format_opts_default();
72 struct dev_opts dev_opts = dev_opts_default();
76 while ((opt = getopt_long(argc, argv, "t:fh",
77 longopts, NULL)) != -1)
80 if (bch2_strtoull_h(optarg, &dev_opts.size))
81 die("invalid filesystem size");
84 if (bch2_strtoull_h(optarg, &dev_opts.bucket_size))
85 die("bad bucket_size %s", optarg);
88 dev_opts.discard = true;
91 dev_opts.label = strdup(optarg);
102 char *fs_path = arg_pop();
104 die("Please supply a filesystem");
106 dev_opts.path = arg_pop();
108 die("Please supply a device");
111 die("too many arguments");
113 struct bchfs_handle fs = bcache_fs_open(fs_path);
115 dev_opts.fd = open_for_format(dev_opts.path, force);
117 struct bch_opt_strs fs_opt_strs;
118 memset(&fs_opt_strs, 0, sizeof(fs_opt_strs));
120 struct bch_opts fs_opts = bch2_parse_opts(fs_opt_strs);
122 opt_set(fs_opts, block_size,
123 read_file_u64(fs.sysfs_fd, "options/block_size"));
124 opt_set(fs_opts, btree_node_size,
125 read_file_u64(fs.sysfs_fd, "options/btree_node_size"));
127 struct bch_sb *sb = bch2_format(fs_opt_strs,
135 bchu_disk_add(fs, dev_opts.path);
139 static void device_remove_usage(void)
141 puts("bcachefs device_remove - remove a device from a filesystem\n"
143 " bcachefs device remove <device>|<devid> <path>\n"
146 " -f, --force Force removal, even if some data\n"
147 " couldn't be migrated\n"
148 " -F, --force-metadata Force removal, even if some metadata\n"
149 " couldn't be migrated\n"
150 " -h, --help display this help and exit\n"
151 "Report bugs to <linux-bcachefs@vger.kernel.org>");
155 int cmd_device_remove(int argc, char *argv[])
157 static const struct option longopts[] = {
158 { "by-id", 0, NULL, 'i' },
159 { "force", 0, NULL, 'f' },
160 { "force-metadata", 0, NULL, 'F' },
161 { "help", 0, NULL, 'h' },
164 struct bchfs_handle fs;
166 int opt, flags = BCH_FORCE_IF_DEGRADED, dev_idx;
168 while ((opt = getopt_long(argc, argv, "fh", longopts, NULL)) != -1)
171 flags |= BCH_FORCE_IF_DATA_LOST;
174 flags |= BCH_FORCE_IF_METADATA_LOST;
177 device_remove_usage();
181 char *dev_str = arg_pop();
183 die("Please supply a device");
186 dev_idx = strtoul(dev_str, &end, 10);
187 if (*dev_str && !*end)
190 char *fs_path = arg_pop();
192 fs = bcache_fs_open(fs_path);
195 dev_idx = bchu_dev_path_to_idx(fs, dev_str);
197 die("%s does not seem to be a member of %s",
201 fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
203 die("Filesystem path required when specifying device by id");
206 bchu_disk_remove(fs, dev_idx, flags);
210 static void device_online_usage(void)
212 puts("bcachefs device online - readd a device to a running filesystem\n"
213 "Usage: bcachefs device online [OPTION]... device\n"
216 " -h, --help Display this help and exit\n"
218 "Report bugs to <linux-bcachefs@vger.kernel.org>");
221 int cmd_device_online(int argc, char *argv[])
225 while ((opt = getopt(argc, argv, "h")) != -1)
228 device_online_usage();
233 char *dev = arg_pop();
235 die("Please supply a device");
238 die("too many arguments");
241 struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
242 bchu_disk_online(fs, dev);
246 static void device_offline_usage(void)
248 puts("bcachefs device offline - take a device offline, without removing it\n"
249 "Usage: bcachefs device offline [OPTION]... device\n"
252 " -f, --force Force, if data redundancy will be degraded\n"
253 " -h, --help Display this help and exit\n"
255 "Report bugs to <linux-bcachefs@vger.kernel.org>");
258 int cmd_device_offline(int argc, char *argv[])
260 static const struct option longopts[] = {
261 { "force", 0, NULL, 'f' },
266 while ((opt = getopt_long(argc, argv, "fh",
267 longopts, NULL)) != -1)
270 flags |= BCH_FORCE_IF_DEGRADED;
273 device_offline_usage();
278 char *dev = arg_pop();
280 die("Please supply a device");
283 die("too many arguments");
286 struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
287 bchu_disk_offline(fs, dev_idx, flags);
291 static void device_evacuate_usage(void)
293 puts("bcachefs device evacuate - move data off of a given device\n"
294 "Usage: bcachefs device evacuate [OPTION]... device\n"
297 " -h, --help Display this help and exit\n"
299 "Report bugs to <linux-bcachefs@vger.kernel.org>");
302 int cmd_device_evacuate(int argc, char *argv[])
306 while ((opt = getopt(argc, argv, "h")) != -1)
309 device_evacuate_usage();
314 char *dev_path = arg_pop();
316 die("Please supply a device");
319 die("too many arguments");
322 struct bchfs_handle fs = bchu_fs_open_by_dev(dev_path, &dev_idx);
324 struct bch_ioctl_dev_usage u = bchu_dev_usage(fs, dev_idx);
326 if (u.state == BCH_MEMBER_STATE_rw) {
327 printf("Setting %s readonly\n", dev_path);
328 bchu_disk_set_state(fs, dev_idx, BCH_MEMBER_STATE_ro, 0);
331 return bchu_data(fs, (struct bch_ioctl_data) {
332 .op = BCH_DATA_OP_MIGRATE,
334 .start_pos = POS_MIN,
335 .end_btree = BTREE_ID_NR,
337 .migrate.dev = dev_idx,
341 static void device_set_state_usage(void)
343 puts("bcachefs device set-state\n"
344 "Usage: bcachefs device set-state <new-state> <device>|<devid> <path>\n"
346 "<new-state>: one of rw, ro, failed or spare\n"
347 "<path>: path to mounted filesystem, optional unless specifying device by id\n"
350 " -f, --force Force, if data redundancy will be degraded\n"
351 " --force-if-data-lost Force, if data will be lost\n"
352 " -o, --offline Set state of an offline device\n"
353 " -h, --help display this help and exit\n"
354 "Report bugs to <linux-bcachefs@vger.kernel.org>");
358 int cmd_device_set_state(int argc, char *argv[])
360 static const struct option longopts[] = {
361 { "force", 0, NULL, 'f' },
362 { "force-if-data-lost", 0, NULL, 'F' },
363 { "offline", 0, NULL, 'o' },
364 { "help", 0, NULL, 'h' },
367 struct bchfs_handle fs;
369 int opt, flags = 0, dev_idx;
370 bool offline = false;
372 while ((opt = getopt_long(argc, argv, "foh", longopts, NULL)) != -1)
375 flags |= BCH_FORCE_IF_DEGRADED;
378 flags |= BCH_FORCE_IF_DEGRADED;
379 flags |= BCH_FORCE_IF_LOST;
385 device_set_state_usage();
389 char *new_state_str = arg_pop();
391 die("Please supply a device state");
393 unsigned new_state = read_string_list_or_die(new_state_str,
394 bch2_member_states, "device state");
396 char *dev_str = arg_pop();
398 die("Please supply a device");
401 dev_idx = strtoul(dev_str, &end, 10);
402 if (*dev_str && !*end)
406 struct bch_opts opts = bch2_opts_empty();
407 struct bch_sb_handle sb = { NULL };
410 die("Cannot specify offline device by id");
412 int ret = bch2_read_super(dev_str, &opts, &sb);
414 die("error opening %s: %s", dev_str, bch2_err_str(ret));
416 struct bch_member *m = bch2_sb_get_members(sb.sb)->members + sb.sb->dev_idx;
418 SET_BCH_MEMBER_STATE(m, new_state);
420 le64_add_cpu(&sb.sb->seq, 1);
422 bch2_super_write(sb.bdev->bd_buffered_fd, sb.sb);
423 ret = fsync(sb.bdev->bd_buffered_fd);
425 fprintf(stderr, "error writing superblock: fsync error (%m)");
426 bch2_free_super(&sb);
430 char *fs_path = arg_pop();
432 fs = bcache_fs_open(fs_path);
435 dev_idx = bchu_dev_path_to_idx(fs, dev_str);
437 die("%s does not seem to be a member of %s",
441 fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
443 die("Filesystem path required when specifying device by id");
446 bchu_disk_set_state(fs, dev_idx, new_state, flags);
451 static void device_resize_usage(void)
453 puts("bcachefs device resize \n"
454 "Usage: bcachefs device resize device [ size ]\n"
457 " -h, --help display this help and exit\n"
458 "Report bugs to <linux-bcachefs@vger.kernel.org>");
462 int cmd_device_resize(int argc, char *argv[])
464 static const struct option longopts[] = {
465 { "help", 0, NULL, 'h' },
471 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
474 device_resize_usage();
478 char *dev = arg_pop();
480 die("Please supply a device to resize");
482 int dev_fd = xopen(dev, O_RDONLY);
484 char *size_arg = arg_pop();
486 size = get_size(dev, dev_fd);
487 else if (bch2_strtoull_h(size_arg, &size))
493 die("Too many arguments");
495 struct stat dev_stat = xfstat(dev_fd);
497 struct mntent *mount = dev_to_mount(dev);
499 if (!S_ISBLK(dev_stat.st_mode))
500 die("%s is mounted but isn't a block device?!", dev);
502 printf("Doing online resize of %s\n", dev);
504 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
506 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
508 struct bch_sb *sb = bchu_read_super(fs, -1);
509 if (idx >= sb->nr_devices)
510 die("error reading superblock: dev idx >= sb->nr_devices");
512 struct bch_sb_field_members *mi = bch2_sb_get_members(sb);
514 die("error reading superblock: no member info");
516 /* could also just read this out of sysfs... meh */
517 struct bch_member *m = mi->members + idx;
519 u64 nbuckets = size / le16_to_cpu(m->bucket_size);
521 if (nbuckets < le64_to_cpu(m->nbuckets))
522 die("Shrinking not supported yet");
524 printf("resizing %s to %llu buckets\n", dev, nbuckets);
525 bchu_disk_resize(fs, idx, nbuckets);
527 printf("Doing offline resize of %s\n", dev);
529 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
531 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
533 struct bch_dev *ca, *resize = NULL;
536 for_each_online_member(ca, c, i) {
538 die("confused: more than one online device?");
540 percpu_ref_get(&resize->io_ref);
543 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
545 if (nbuckets < le64_to_cpu(resize->mi.nbuckets))
546 die("Shrinking not supported yet");
548 printf("resizing %s to %llu buckets\n", dev, nbuckets);
549 int ret = bch2_dev_resize(c, resize, nbuckets);
551 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
553 percpu_ref_put(&resize->io_ref);
559 static void device_resize_journal_usage(void)
561 puts("bcachefs device resize-journal \n"
562 "Usage: bcachefs device resize-journal device size\n"
565 " -h, --help display this help and exit\n"
566 "Report bugs to <linux-bcachefs@vger.kernel.org>");
570 int cmd_device_resize_journal(int argc, char *argv[])
572 static const struct option longopts[] = {
573 { "help", 0, NULL, 'h' },
579 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
582 device_resize_journal_usage();
586 char *dev = arg_pop();
588 die("Please supply a device");
590 int dev_fd = xopen(dev, O_RDONLY);
592 char *size_arg = arg_pop();
594 die("Please supply a journal size");
595 else if (bch2_strtoull_h(size_arg, &size))
601 die("Too many arguments");
603 struct stat dev_stat = xfstat(dev_fd);
605 struct mntent *mount = dev_to_mount(dev);
607 if (!S_ISBLK(dev_stat.st_mode))
608 die("%s is mounted but isn't a block device?!", dev);
610 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
612 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
614 struct bch_sb *sb = bchu_read_super(fs, -1);
615 if (idx >= sb->nr_devices)
616 die("error reading superblock: dev idx >= sb->nr_devices");
618 struct bch_sb_field_members *mi = bch2_sb_get_members(sb);
620 die("error reading superblock: no member info");
622 /* could also just read this out of sysfs... meh */
623 struct bch_member *m = mi->members + idx;
625 u64 nbuckets = size / le16_to_cpu(m->bucket_size);
627 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
628 bchu_disk_resize_journal(fs, idx, nbuckets);
630 printf("%s is offline - starting:\n", dev);
632 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
634 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
636 struct bch_dev *ca, *resize = NULL;
639 for_each_online_member(ca, c, i) {
641 die("confused: more than one online device?");
643 percpu_ref_get(&resize->io_ref);
646 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
648 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
649 int ret = bch2_set_nr_journal_buckets(c, resize, nbuckets);
651 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
653 percpu_ref_put(&resize->io_ref);