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/sb-members.h"
20 #include "libbcachefs/super-io.h"
22 #include "libbcachefs.h"
23 #include "libbcachefs/opts.h"
24 #include "tools-util.h"
26 int device_usage(void)
28 puts("bcachefs device - manage devices within a running filesystem\n"
29 "Usage: bcachefs device <CMD> [OPTION]\n"
32 " add add a new device to an existing filesystem\n"
33 " remove remove a device from an existing filesystem\n"
34 " online re-add an existing member to a filesystem\n"
35 " offline take a device offline, without removing it\n"
36 " evacuate migrate data off a specific device\n"
37 " set-state mark a device as failed\n"
38 " resize resize filesystem on a device\n"
39 " resize-journal resize journal on a device\n"
41 "Report bugs to <linux-bcachefs@vger.kernel.org>");
45 static void device_add_usage(void)
47 puts("bcachefs device add - add a device to an existing filesystem\n"
48 "Usage: bcachefs device add [OPTION]... filesystem device\n"
51 " -S, --fs_size=size Size of filesystem on device\n"
52 " -B, --bucket=size Bucket size\n"
53 " -D, --discard Enable discards\n"
54 " -l, --label=label Disk label\n"
55 " -f, --force Use device even if it appears to already be formatted\n"
56 " -h, --help Display this help and exit\n"
58 "Report bugs to <linux-bcachefs@vger.kernel.org>");
61 int cmd_device_add(int argc, char *argv[])
63 static const struct option longopts[] = {
64 { "fs_size", required_argument, NULL, 'S' },
65 { "bucket", required_argument, NULL, 'B' },
66 { "discard", no_argument, NULL, 'D' },
67 { "label", required_argument, NULL, 'l' },
68 { "force", no_argument, NULL, 'f' },
69 { "help", no_argument, NULL, 'h' },
72 struct format_opts format_opts = format_opts_default();
73 struct dev_opts dev_opts = dev_opts_default();
77 while ((opt = getopt_long(argc, argv, "t:fh",
78 longopts, NULL)) != -1)
81 if (bch2_strtoull_h(optarg, &dev_opts.size))
82 die("invalid filesystem size");
85 if (bch2_strtoull_h(optarg, &dev_opts.bucket_size))
86 die("bad bucket_size %s", optarg);
89 dev_opts.discard = true;
92 dev_opts.label = strdup(optarg);
103 char *fs_path = arg_pop();
105 die("Please supply a filesystem");
107 dev_opts.path = arg_pop();
109 die("Please supply a device");
112 die("too many arguments");
114 struct bchfs_handle fs = bcache_fs_open(fs_path);
116 dev_opts.fd = open_for_format(dev_opts.path, force);
118 struct bch_opt_strs fs_opt_strs;
119 memset(&fs_opt_strs, 0, sizeof(fs_opt_strs));
121 struct bch_opts fs_opts = bch2_parse_opts(fs_opt_strs);
123 opt_set(fs_opts, block_size,
124 read_file_u64(fs.sysfs_fd, "options/block_size"));
125 opt_set(fs_opts, btree_node_size,
126 read_file_u64(fs.sysfs_fd, "options/btree_node_size"));
128 struct bch_sb *sb = bch2_format(fs_opt_strs,
136 bchu_disk_add(fs, dev_opts.path);
140 static void device_remove_usage(void)
142 puts("bcachefs device_remove - remove a device from a filesystem\n"
144 " bcachefs device remove <device>|<devid> <path>\n"
147 " -f, --force Force removal, even if some data\n"
148 " couldn't be migrated\n"
149 " -F, --force-metadata Force removal, even if some metadata\n"
150 " couldn't be migrated\n"
151 " -h, --help display this help and exit\n"
152 "Report bugs to <linux-bcachefs@vger.kernel.org>");
156 int cmd_device_remove(int argc, char *argv[])
158 static const struct option longopts[] = {
159 { "by-id", 0, NULL, 'i' },
160 { "force", 0, NULL, 'f' },
161 { "force-metadata", 0, NULL, 'F' },
162 { "help", 0, NULL, 'h' },
165 struct bchfs_handle fs;
167 int opt, flags = BCH_FORCE_IF_DEGRADED, dev_idx;
169 while ((opt = getopt_long(argc, argv, "fh", longopts, NULL)) != -1)
172 flags |= BCH_FORCE_IF_DATA_LOST;
175 flags |= BCH_FORCE_IF_METADATA_LOST;
178 device_remove_usage();
182 char *dev_str = arg_pop();
184 die("Please supply a device");
187 dev_idx = strtoul(dev_str, &end, 10);
188 if (*dev_str && !*end)
191 char *fs_path = arg_pop();
193 fs = bcache_fs_open(fs_path);
196 dev_idx = bchu_dev_path_to_idx(fs, dev_str);
198 die("%s does not seem to be a member of %s",
202 fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
204 die("Filesystem path required when specifying device by id");
207 bchu_disk_remove(fs, dev_idx, flags);
211 static void device_online_usage(void)
213 puts("bcachefs device online - readd a device to a running filesystem\n"
214 "Usage: bcachefs device online [OPTION]... device\n"
217 " -h, --help Display this help and exit\n"
219 "Report bugs to <linux-bcachefs@vger.kernel.org>");
222 int cmd_device_online(int argc, char *argv[])
226 while ((opt = getopt(argc, argv, "h")) != -1)
229 device_online_usage();
234 char *dev = arg_pop();
236 die("Please supply a device");
239 die("too many arguments");
242 struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
243 bchu_disk_online(fs, dev);
247 static void device_offline_usage(void)
249 puts("bcachefs device offline - take a device offline, without removing it\n"
250 "Usage: bcachefs device offline [OPTION]... device\n"
253 " -f, --force Force, if data redundancy will be degraded\n"
254 " -h, --help Display this help and exit\n"
256 "Report bugs to <linux-bcachefs@vger.kernel.org>");
259 int cmd_device_offline(int argc, char *argv[])
261 static const struct option longopts[] = {
262 { "force", 0, NULL, 'f' },
267 while ((opt = getopt_long(argc, argv, "fh",
268 longopts, NULL)) != -1)
271 flags |= BCH_FORCE_IF_DEGRADED;
274 device_offline_usage();
279 char *dev = arg_pop();
281 die("Please supply a device");
284 die("too many arguments");
287 struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
288 bchu_disk_offline(fs, dev_idx, flags);
292 static void device_evacuate_usage(void)
294 puts("bcachefs device evacuate - move data off of a given device\n"
295 "Usage: bcachefs device evacuate [OPTION]... device\n"
298 " -h, --help Display this help and exit\n"
300 "Report bugs to <linux-bcachefs@vger.kernel.org>");
303 int cmd_device_evacuate(int argc, char *argv[])
307 while ((opt = getopt(argc, argv, "h")) != -1)
310 device_evacuate_usage();
315 char *dev_path = arg_pop();
317 die("Please supply a device");
320 die("too many arguments");
323 struct bchfs_handle fs = bchu_fs_open_by_dev(dev_path, &dev_idx);
325 struct bch_ioctl_dev_usage u = bchu_dev_usage(fs, dev_idx);
327 if (u.state == BCH_MEMBER_STATE_rw) {
328 printf("Setting %s readonly\n", dev_path);
329 bchu_disk_set_state(fs, dev_idx, BCH_MEMBER_STATE_ro, 0);
332 return bchu_data(fs, (struct bch_ioctl_data) {
333 .op = BCH_DATA_OP_MIGRATE,
335 .start_pos = POS_MIN,
336 .end_btree = BTREE_ID_NR,
338 .migrate.dev = dev_idx,
342 static void device_set_state_usage(void)
344 puts("bcachefs device set-state\n"
345 "Usage: bcachefs device set-state <new-state> <device>|<devid> <path>\n"
347 "<new-state>: one of rw, ro, failed or spare\n"
348 "<path>: path to mounted filesystem, optional unless specifying device by id\n"
351 " -f, --force Force, if data redundancy will be degraded\n"
352 " --force-if-data-lost Force, if data will be lost\n"
353 " -o, --offline Set state of an offline device\n"
354 " -h, --help display this help and exit\n"
355 "Report bugs to <linux-bcachefs@vger.kernel.org>");
359 int cmd_device_set_state(int argc, char *argv[])
361 static const struct option longopts[] = {
362 { "force", 0, NULL, 'f' },
363 { "force-if-data-lost", 0, NULL, 'F' },
364 { "offline", 0, NULL, 'o' },
365 { "help", 0, NULL, 'h' },
368 struct bchfs_handle fs;
370 int opt, flags = 0, dev_idx;
371 bool offline = false;
373 while ((opt = getopt_long(argc, argv, "foh", longopts, NULL)) != -1)
376 flags |= BCH_FORCE_IF_DEGRADED;
379 flags |= BCH_FORCE_IF_DEGRADED;
380 flags |= BCH_FORCE_IF_LOST;
386 device_set_state_usage();
390 char *new_state_str = arg_pop();
392 die("Please supply a device state");
394 unsigned new_state = read_string_list_or_die(new_state_str,
395 bch2_member_states, "device state");
397 char *dev_str = arg_pop();
399 die("Please supply a device");
402 dev_idx = strtoul(dev_str, &end, 10);
403 if (*dev_str && !*end)
407 struct bch_opts opts = bch2_opts_empty();
408 struct bch_sb_handle sb = { NULL };
411 die("Cannot specify offline device by id");
413 int ret = bch2_read_super(dev_str, &opts, &sb);
415 die("error opening %s: %s", dev_str, bch2_err_str(ret));
417 struct bch_member *m = bch2_sb_get_members(sb.sb)->members + sb.sb->dev_idx;
419 SET_BCH_MEMBER_STATE(m, new_state);
421 le64_add_cpu(&sb.sb->seq, 1);
423 bch2_super_write(sb.bdev->bd_buffered_fd, sb.sb);
424 ret = fsync(sb.bdev->bd_buffered_fd);
426 fprintf(stderr, "error writing superblock: fsync error (%m)");
427 bch2_free_super(&sb);
431 char *fs_path = arg_pop();
433 fs = bcache_fs_open(fs_path);
436 dev_idx = bchu_dev_path_to_idx(fs, dev_str);
438 die("%s does not seem to be a member of %s",
442 fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
444 die("Filesystem path required when specifying device by id");
447 bchu_disk_set_state(fs, dev_idx, new_state, flags);
452 static void device_resize_usage(void)
454 puts("bcachefs device resize \n"
455 "Usage: bcachefs device resize device [ size ]\n"
458 " -h, --help display this help and exit\n"
459 "Report bugs to <linux-bcachefs@vger.kernel.org>");
463 int cmd_device_resize(int argc, char *argv[])
465 static const struct option longopts[] = {
466 { "help", 0, NULL, 'h' },
472 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
475 device_resize_usage();
479 char *dev = arg_pop();
481 die("Please supply a device to resize");
483 int dev_fd = xopen(dev, O_RDONLY);
485 char *size_arg = arg_pop();
487 size = get_size(dev, dev_fd);
488 else if (bch2_strtoull_h(size_arg, &size))
494 die("Too many arguments");
496 struct stat dev_stat = xfstat(dev_fd);
498 struct mntent *mount = dev_to_mount(dev);
500 if (!S_ISBLK(dev_stat.st_mode))
501 die("%s is mounted but isn't a block device?!", dev);
503 printf("Doing online resize of %s\n", dev);
505 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
507 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
509 struct bch_sb *sb = bchu_read_super(fs, -1);
510 if (idx >= sb->nr_devices)
511 die("error reading superblock: dev idx >= sb->nr_devices");
513 struct bch_sb_field_members *mi = bch2_sb_get_members(sb);
515 die("error reading superblock: no member info");
517 /* could also just read this out of sysfs... meh */
518 struct bch_member *m = mi->members + idx;
520 u64 nbuckets = size / le16_to_cpu(m->bucket_size);
522 if (nbuckets < le64_to_cpu(m->nbuckets))
523 die("Shrinking not supported yet");
525 printf("resizing %s to %llu buckets\n", dev, nbuckets);
526 bchu_disk_resize(fs, idx, nbuckets);
528 printf("Doing offline resize of %s\n", dev);
530 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
532 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
534 struct bch_dev *ca, *resize = NULL;
537 for_each_online_member(ca, c, i) {
539 die("confused: more than one online device?");
541 percpu_ref_get(&resize->io_ref);
544 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
546 if (nbuckets < le64_to_cpu(resize->mi.nbuckets))
547 die("Shrinking not supported yet");
549 printf("resizing %s to %llu buckets\n", dev, nbuckets);
550 int ret = bch2_dev_resize(c, resize, nbuckets);
552 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
554 percpu_ref_put(&resize->io_ref);
560 static void device_resize_journal_usage(void)
562 puts("bcachefs device resize-journal \n"
563 "Usage: bcachefs device resize-journal device size\n"
566 " -h, --help display this help and exit\n"
567 "Report bugs to <linux-bcachefs@vger.kernel.org>");
571 int cmd_device_resize_journal(int argc, char *argv[])
573 static const struct option longopts[] = {
574 { "help", 0, NULL, 'h' },
580 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
583 device_resize_journal_usage();
587 char *dev = arg_pop();
589 die("Please supply a device");
591 int dev_fd = xopen(dev, O_RDONLY);
593 char *size_arg = arg_pop();
595 die("Please supply a journal size");
596 else if (bch2_strtoull_h(size_arg, &size))
602 die("Too many arguments");
604 struct stat dev_stat = xfstat(dev_fd);
606 struct mntent *mount = dev_to_mount(dev);
608 if (!S_ISBLK(dev_stat.st_mode))
609 die("%s is mounted but isn't a block device?!", dev);
611 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
613 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
615 struct bch_sb *sb = bchu_read_super(fs, -1);
616 if (idx >= sb->nr_devices)
617 die("error reading superblock: dev idx >= sb->nr_devices");
619 struct bch_sb_field_members *mi = bch2_sb_get_members(sb);
621 die("error reading superblock: no member info");
623 /* could also just read this out of sysfs... meh */
624 struct bch_member *m = mi->members + idx;
626 u64 nbuckets = size / le16_to_cpu(m->bucket_size);
628 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
629 bchu_disk_resize_journal(fs, idx, nbuckets);
631 printf("%s is offline - starting:\n", dev);
633 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
635 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
637 struct bch_dev *ca, *resize = NULL;
640 for_each_online_member(ca, c, i) {
642 die("confused: more than one online device?");
644 percpu_ref_get(&resize->io_ref);
647 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
649 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
650 int ret = bch2_set_nr_journal_buckets(c, resize, nbuckets);
652 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
654 percpu_ref_put(&resize->io_ref);