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 int ret = open_for_format(&dev_opts, force);
118 die("Error opening %s: %s", dev_opts.path, strerror(-ret));
120 struct bch_opt_strs fs_opt_strs;
121 memset(&fs_opt_strs, 0, sizeof(fs_opt_strs));
123 struct bch_opts fs_opts = bch2_parse_opts(fs_opt_strs);
125 opt_set(fs_opts, block_size,
126 read_file_u64(fs.sysfs_fd, "options/block_size"));
127 opt_set(fs_opts, btree_node_size,
128 read_file_u64(fs.sysfs_fd, "options/btree_node_size"));
130 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_v2 *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);
333 return bchu_data(fs, (struct bch_ioctl_data) {
334 .op = BCH_DATA_OP_migrate,
336 .start_pos = POS_MIN,
337 .end_btree = BTREE_ID_NR,
339 .migrate.dev = dev_idx,
343 static void device_set_state_usage(void)
345 puts("bcachefs device set-state\n"
346 "Usage: bcachefs device set-state <new-state> <device>|<devid> <path>\n"
348 "<new-state>: one of rw, ro, failed or spare\n"
349 "<path>: path to mounted filesystem, optional unless specifying device by id\n"
352 " -f, --force Force, if data redundancy will be degraded\n"
353 " --force-if-data-lost Force, if data will be lost\n"
354 " -o, --offline Set state of an offline device\n"
355 " -h, --help display this help and exit\n"
356 "Report bugs to <linux-bcachefs@vger.kernel.org>");
360 int cmd_device_set_state(int argc, char *argv[])
362 static const struct option longopts[] = {
363 { "force", 0, NULL, 'f' },
364 { "force-if-data-lost", 0, NULL, 'F' },
365 { "offline", 0, NULL, 'o' },
366 { "help", 0, NULL, 'h' },
369 struct bchfs_handle fs;
371 int opt, flags = 0, dev_idx;
372 bool offline = false;
374 while ((opt = getopt_long(argc, argv, "foh", longopts, NULL)) != -1)
377 flags |= BCH_FORCE_IF_DEGRADED;
380 flags |= BCH_FORCE_IF_DEGRADED;
381 flags |= BCH_FORCE_IF_LOST;
387 device_set_state_usage();
391 char *new_state_str = arg_pop();
393 die("Please supply a device state");
395 unsigned new_state = read_string_list_or_die(new_state_str,
396 bch2_member_states, "device state");
398 char *dev_str = arg_pop();
400 die("Please supply a device");
403 dev_idx = strtoul(dev_str, &end, 10);
404 if (*dev_str && !*end)
408 struct bch_opts opts = bch2_opts_empty();
409 struct bch_sb_handle sb = { NULL };
412 die("Cannot specify offline device by id");
414 int ret = bch2_read_super(dev_str, &opts, &sb);
416 die("error opening %s: %s", dev_str, bch2_err_str(ret));
418 struct bch_member *m = bch2_members_v2_get_mut(sb.sb, sb.sb->dev_idx);
420 SET_BCH_MEMBER_STATE(m, new_state);
422 le64_add_cpu(&sb.sb->seq, 1);
424 bch2_super_write(sb.bdev->bd_fd, sb.sb);
425 ret = fsync(sb.bdev->bd_fd);
427 fprintf(stderr, "error writing superblock: fsync error (%m)");
428 bch2_free_super(&sb);
432 char *fs_path = arg_pop();
434 fs = bcache_fs_open(fs_path);
437 dev_idx = bchu_dev_path_to_idx(fs, dev_str);
439 die("%s does not seem to be a member of %s",
443 fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
445 die("Filesystem path required when specifying device by id");
448 bchu_disk_set_state(fs, dev_idx, new_state, flags);
453 static void device_resize_usage(void)
455 puts("bcachefs device resize \n"
456 "Usage: bcachefs device resize device [ size ]\n"
459 " -h, --help display this help and exit\n"
460 "Report bugs to <linux-bcachefs@vger.kernel.org>");
464 int cmd_device_resize(int argc, char *argv[])
466 static const struct option longopts[] = {
467 { "help", 0, NULL, 'h' },
473 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
476 device_resize_usage();
480 char *dev = arg_pop();
482 die("Please supply a device to resize");
484 int dev_fd = xopen(dev, O_RDONLY);
486 char *size_arg = arg_pop();
488 size = get_size(dev_fd);
489 else if (bch2_strtoull_h(size_arg, &size))
495 die("Too many arguments");
497 struct stat dev_stat = xfstat(dev_fd);
499 struct mntent *mount = dev_to_mount(dev);
501 if (!S_ISBLK(dev_stat.st_mode))
502 die("%s is mounted but isn't a block device?!", dev);
504 printf("Doing online resize of %s\n", dev);
506 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
508 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
510 struct bch_sb *sb = bchu_read_super(fs, -1);
511 if (idx >= sb->nr_devices)
512 die("error reading superblock: dev idx >= sb->nr_devices");
514 struct bch_member m = bch2_sb_member_get(sb, idx);
516 u64 nbuckets = size / le16_to_cpu(m.bucket_size);
518 if (nbuckets < le64_to_cpu(m.nbuckets))
519 die("Shrinking not supported yet");
521 printf("resizing %s to %llu buckets\n", dev, nbuckets);
522 bchu_disk_resize(fs, idx, nbuckets);
524 printf("Doing offline resize of %s\n", dev);
526 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
528 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
530 struct bch_dev *resize = NULL;
532 for_each_online_member(c, ca) {
534 die("confused: more than one online device?");
536 percpu_ref_get(&resize->io_ref);
539 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
541 if (nbuckets < le64_to_cpu(resize->mi.nbuckets))
542 die("Shrinking not supported yet");
544 printf("resizing %s to %llu buckets\n", dev, nbuckets);
545 int ret = bch2_dev_resize(c, resize, nbuckets);
547 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
549 percpu_ref_put(&resize->io_ref);
555 static void device_resize_journal_usage(void)
557 puts("bcachefs device resize-journal \n"
558 "Usage: bcachefs device resize-journal device size\n"
561 " -h, --help display this help and exit\n"
562 "Report bugs to <linux-bcachefs@vger.kernel.org>");
566 int cmd_device_resize_journal(int argc, char *argv[])
568 static const struct option longopts[] = {
569 { "help", 0, NULL, 'h' },
575 while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
578 device_resize_journal_usage();
582 char *dev = arg_pop();
584 die("Please supply a device");
586 int dev_fd = xopen(dev, O_RDONLY);
588 char *size_arg = arg_pop();
590 die("Please supply a journal size");
591 else if (bch2_strtoull_h(size_arg, &size))
597 die("Too many arguments");
599 struct stat dev_stat = xfstat(dev_fd);
601 struct mntent *mount = dev_to_mount(dev);
603 if (!S_ISBLK(dev_stat.st_mode))
604 die("%s is mounted but isn't a block device?!", dev);
606 struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
608 unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
610 struct bch_sb *sb = bchu_read_super(fs, -1);
611 if (idx >= sb->nr_devices)
612 die("error reading superblock: dev idx >= sb->nr_devices");
614 struct bch_member m = bch2_sb_member_get(sb, idx);
616 u64 nbuckets = size / le16_to_cpu(m.bucket_size);
618 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
619 bchu_disk_resize_journal(fs, idx, nbuckets);
621 printf("%s is offline - starting:\n", dev);
623 struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
625 die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
627 struct bch_dev *resize = NULL;
629 for_each_online_member(c, ca) {
631 die("confused: more than one online device?");
633 percpu_ref_get(&resize->io_ref);
636 u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
638 printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
639 int ret = bch2_set_nr_journal_buckets(c, resize, nbuckets);
641 fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
643 percpu_ref_put(&resize->io_ref);