summaryrefslogtreecommitdiff
path: root/c_src/cmd_device.c
diff options
context:
space:
mode:
Diffstat (limited to 'c_src/cmd_device.c')
-rw-r--r--c_src/cmd_device.c647
1 files changed, 647 insertions, 0 deletions
diff --git a/c_src/cmd_device.c b/c_src/cmd_device.c
new file mode 100644
index 00000000..b4bcd345
--- /dev/null
+++ b/c_src/cmd_device.c
@@ -0,0 +1,647 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <libgen.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "libbcachefs/bcachefs.h"
+#include "libbcachefs/bcachefs_ioctl.h"
+#include "libbcachefs/errcode.h"
+#include "libbcachefs/journal.h"
+#include "libbcachefs/sb-members.h"
+#include "libbcachefs/super-io.h"
+#include "cmds.h"
+#include "libbcachefs.h"
+#include "libbcachefs/opts.h"
+#include "tools-util.h"
+
+int device_usage(void)
+{
+ puts("bcachefs device - manage devices within a running filesystem\n"
+ "Usage: bcachefs device <CMD> [OPTION]\n"
+ "\n"
+ "Commands:\n"
+ " add add a new device to an existing filesystem\n"
+ " remove remove a device from an existing filesystem\n"
+ " online re-add an existing member to a filesystem\n"
+ " offline take a device offline, without removing it\n"
+ " evacuate migrate data off a specific device\n"
+ " set-state mark a device as failed\n"
+ " resize resize filesystem on a device\n"
+ " resize-journal resize journal on a device\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+ return 0;
+}
+
+static void device_add_usage(void)
+{
+ puts("bcachefs device add - add a device to an existing filesystem\n"
+ "Usage: bcachefs device add [OPTION]... filesystem device\n"
+ "\n"
+ "Options:\n"
+ " -S, --fs_size=size Size of filesystem on device\n"
+ " -B, --bucket=size Bucket size\n"
+ " -D, --discard Enable discards\n"
+ " -l, --label=label Disk label\n"
+ " -f, --force Use device even if it appears to already be formatted\n"
+ " -h, --help Display this help and exit\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+}
+
+int cmd_device_add(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "fs_size", required_argument, NULL, 'S' },
+ { "bucket", required_argument, NULL, 'B' },
+ { "discard", no_argument, NULL, 'D' },
+ { "label", required_argument, NULL, 'l' },
+ { "force", no_argument, NULL, 'f' },
+ { "help", no_argument, NULL, 'h' },
+ { NULL }
+ };
+ struct format_opts format_opts = format_opts_default();
+ struct dev_opts dev_opts = dev_opts_default();
+ bool force = false;
+ int opt;
+
+ while ((opt = getopt_long(argc, argv, "t:fh",
+ longopts, NULL)) != -1)
+ switch (opt) {
+ case 'S':
+ if (bch2_strtoull_h(optarg, &dev_opts.size))
+ die("invalid filesystem size");
+ break;
+ case 'B':
+ if (bch2_strtoull_h(optarg, &dev_opts.bucket_size))
+ die("bad bucket_size %s", optarg);
+ break;
+ case 'D':
+ dev_opts.discard = true;
+ break;
+ case 'l':
+ dev_opts.label = strdup(optarg);
+ break;
+ case 'f':
+ force = true;
+ break;
+ case 'h':
+ device_add_usage();
+ exit(EXIT_SUCCESS);
+ }
+ args_shift(optind);
+
+ char *fs_path = arg_pop();
+ if (!fs_path)
+ die("Please supply a filesystem");
+
+ dev_opts.path = arg_pop();
+ if (!dev_opts.path)
+ die("Please supply a device");
+
+ if (argc)
+ die("too many arguments");
+
+ struct bchfs_handle fs = bcache_fs_open(fs_path);
+
+ int ret = open_for_format(&dev_opts, force);
+ if (ret)
+ die("Error opening %s: %s", dev_opts.path, strerror(-ret));
+
+ struct bch_opt_strs fs_opt_strs;
+ memset(&fs_opt_strs, 0, sizeof(fs_opt_strs));
+
+ struct bch_opts fs_opts = bch2_parse_opts(fs_opt_strs);
+
+ opt_set(fs_opts, block_size,
+ read_file_u64(fs.sysfs_fd, "options/block_size"));
+ opt_set(fs_opts, btree_node_size,
+ read_file_u64(fs.sysfs_fd, "options/btree_node_size"));
+
+ struct bch_sb *sb = bch2_format(fs_opt_strs,
+ fs_opts,
+ format_opts,
+ &dev_opts, 1);
+ free(sb);
+ bchu_disk_add(fs, dev_opts.path);
+ return 0;
+}
+
+static void device_remove_usage(void)
+{
+ puts("bcachefs device_remove - remove a device from a filesystem\n"
+ "Usage:\n"
+ " bcachefs device remove <device>|<devid> <path>\n"
+ "\n"
+ "Options:\n"
+ " -f, --force Force removal, even if some data\n"
+ " couldn't be migrated\n"
+ " -F, --force-metadata Force removal, even if some metadata\n"
+ " couldn't be migrated\n"
+ " -h, --help display this help and exit\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+ exit(EXIT_SUCCESS);
+}
+
+int cmd_device_remove(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "by-id", 0, NULL, 'i' },
+ { "force", 0, NULL, 'f' },
+ { "force-metadata", 0, NULL, 'F' },
+ { "help", 0, NULL, 'h' },
+ { NULL }
+ };
+ struct bchfs_handle fs;
+ bool by_id = false;
+ int opt, flags = BCH_FORCE_IF_DEGRADED, dev_idx;
+
+ while ((opt = getopt_long(argc, argv, "fh", longopts, NULL)) != -1)
+ switch (opt) {
+ case 'f':
+ flags |= BCH_FORCE_IF_DATA_LOST;
+ break;
+ case 'F':
+ flags |= BCH_FORCE_IF_METADATA_LOST;
+ break;
+ case 'h':
+ device_remove_usage();
+ }
+ args_shift(optind);
+
+ char *dev_str = arg_pop();
+ if (!dev_str)
+ die("Please supply a device");
+
+ char *end;
+ dev_idx = strtoul(dev_str, &end, 10);
+ if (*dev_str && !*end)
+ by_id = true;
+
+ char *fs_path = arg_pop();
+ if (fs_path) {
+ fs = bcache_fs_open(fs_path);
+
+ if (!by_id) {
+ dev_idx = bchu_dev_path_to_idx(fs, dev_str);
+ if (dev_idx < 0)
+ die("%s does not seem to be a member of %s",
+ dev_str, fs_path);
+ }
+ } else if (!by_id) {
+ fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
+ } else {
+ die("Filesystem path required when specifying device by id");
+ }
+
+ bchu_disk_remove(fs, dev_idx, flags);
+ return 0;
+}
+
+static void device_online_usage(void)
+{
+ puts("bcachefs device online - readd a device to a running filesystem\n"
+ "Usage: bcachefs device online [OPTION]... device\n"
+ "\n"
+ "Options:\n"
+ " -h, --help Display this help and exit\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+}
+
+int cmd_device_online(int argc, char *argv[])
+{
+ int opt;
+
+ while ((opt = getopt(argc, argv, "h")) != -1)
+ switch (opt) {
+ case 'h':
+ device_online_usage();
+ exit(EXIT_SUCCESS);
+ }
+ args_shift(optind);
+
+ char *dev = arg_pop();
+ if (!dev)
+ die("Please supply a device");
+
+ if (argc)
+ die("too many arguments");
+
+ int dev_idx;
+ struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
+ bchu_disk_online(fs, dev);
+ return 0;
+}
+
+static void device_offline_usage(void)
+{
+ puts("bcachefs device offline - take a device offline, without removing it\n"
+ "Usage: bcachefs device offline [OPTION]... device\n"
+ "\n"
+ "Options:\n"
+ " -f, --force Force, if data redundancy will be degraded\n"
+ " -h, --help Display this help and exit\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+}
+
+int cmd_device_offline(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "force", 0, NULL, 'f' },
+ { NULL }
+ };
+ int opt, flags = 0;
+
+ while ((opt = getopt_long(argc, argv, "fh",
+ longopts, NULL)) != -1)
+ switch (opt) {
+ case 'f':
+ flags |= BCH_FORCE_IF_DEGRADED;
+ break;
+ case 'h':
+ device_offline_usage();
+ exit(EXIT_SUCCESS);
+ }
+ args_shift(optind);
+
+ char *dev = arg_pop();
+ if (!dev)
+ die("Please supply a device");
+
+ if (argc)
+ die("too many arguments");
+
+ int dev_idx;
+ struct bchfs_handle fs = bchu_fs_open_by_dev(dev, &dev_idx);
+ bchu_disk_offline(fs, dev_idx, flags);
+ return 0;
+}
+
+static void device_evacuate_usage(void)
+{
+ puts("bcachefs device evacuate - move data off of a given device\n"
+ "Usage: bcachefs device evacuate [OPTION]... device\n"
+ "\n"
+ "Options:\n"
+ " -h, --help Display this help and exit\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+}
+
+int cmd_device_evacuate(int argc, char *argv[])
+{
+ int opt;
+
+ while ((opt = getopt(argc, argv, "h")) != -1)
+ switch (opt) {
+ case 'h':
+ device_evacuate_usage();
+ exit(EXIT_SUCCESS);
+ }
+ args_shift(optind);
+
+ char *dev_path = arg_pop();
+ if (!dev_path)
+ die("Please supply a device");
+
+ if (argc)
+ die("too many arguments");
+
+ int dev_idx;
+ struct bchfs_handle fs = bchu_fs_open_by_dev(dev_path, &dev_idx);
+
+ struct bch_ioctl_dev_usage_v2 *u = bchu_dev_usage(fs, dev_idx);
+
+ if (u->state == BCH_MEMBER_STATE_rw) {
+ printf("Setting %s readonly\n", dev_path);
+ bchu_disk_set_state(fs, dev_idx, BCH_MEMBER_STATE_ro, 0);
+ }
+
+ free(u);
+
+ return bchu_data(fs, (struct bch_ioctl_data) {
+ .op = BCH_DATA_OP_migrate,
+ .start_btree = 0,
+ .start_pos = POS_MIN,
+ .end_btree = BTREE_ID_NR,
+ .end_pos = POS_MAX,
+ .migrate.dev = dev_idx,
+ });
+}
+
+static void device_set_state_usage(void)
+{
+ puts("bcachefs device set-state\n"
+ "Usage: bcachefs device set-state <new-state> <device>|<devid> <path>\n"
+ "\n"
+ "<new-state>: one of rw, ro, failed or spare\n"
+ "<path>: path to mounted filesystem, optional unless specifying device by id\n"
+ "\n"
+ "Options:\n"
+ " -f, --force Force, if data redundancy will be degraded\n"
+ " --force-if-data-lost Force, if data will be lost\n"
+ " -o, --offline Set state of an offline device\n"
+ " -h, --help display this help and exit\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+ exit(EXIT_SUCCESS);
+}
+
+int cmd_device_set_state(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "force", 0, NULL, 'f' },
+ { "force-if-data-lost", 0, NULL, 'F' },
+ { "offline", 0, NULL, 'o' },
+ { "help", 0, NULL, 'h' },
+ { NULL }
+ };
+ struct bchfs_handle fs;
+ bool by_id = false;
+ int opt, flags = 0, dev_idx;
+ bool offline = false;
+
+ while ((opt = getopt_long(argc, argv, "foh", longopts, NULL)) != -1)
+ switch (opt) {
+ case 'f':
+ flags |= BCH_FORCE_IF_DEGRADED;
+ break;
+ case 'F':
+ flags |= BCH_FORCE_IF_DEGRADED;
+ flags |= BCH_FORCE_IF_LOST;
+ break;
+ case 'o':
+ offline = true;
+ break;
+ case 'h':
+ device_set_state_usage();
+ }
+ args_shift(optind);
+
+ char *new_state_str = arg_pop();
+ if (!new_state_str)
+ die("Please supply a device state");
+
+ unsigned new_state = read_string_list_or_die(new_state_str,
+ bch2_member_states, "device state");
+
+ char *dev_str = arg_pop();
+ if (!dev_str)
+ die("Please supply a device");
+
+ char *end;
+ dev_idx = strtoul(dev_str, &end, 10);
+ if (*dev_str && !*end)
+ by_id = true;
+
+ if (offline) {
+ struct bch_opts opts = bch2_opts_empty();
+ struct bch_sb_handle sb = { NULL };
+
+ if (by_id)
+ die("Cannot specify offline device by id");
+
+ int ret = bch2_read_super(dev_str, &opts, &sb);
+ if (ret)
+ die("error opening %s: %s", dev_str, bch2_err_str(ret));
+
+ struct bch_member *m = bch2_members_v2_get_mut(sb.sb, sb.sb->dev_idx);
+
+ SET_BCH_MEMBER_STATE(m, new_state);
+
+ le64_add_cpu(&sb.sb->seq, 1);
+
+ bch2_super_write(sb.bdev->bd_fd, sb.sb);
+ ret = fsync(sb.bdev->bd_fd);
+ if (ret)
+ fprintf(stderr, "error writing superblock: fsync error (%m)");
+ bch2_free_super(&sb);
+ return ret;
+ }
+
+ char *fs_path = arg_pop();
+ if (fs_path) {
+ fs = bcache_fs_open(fs_path);
+
+ if (!by_id) {
+ dev_idx = bchu_dev_path_to_idx(fs, dev_str);
+ if (dev_idx < 0)
+ die("%s does not seem to be a member of %s",
+ dev_str, fs_path);
+ }
+ } else if (!by_id) {
+ fs = bchu_fs_open_by_dev(dev_str, &dev_idx);
+ } else {
+ die("Filesystem path required when specifying device by id");
+ }
+
+ bchu_disk_set_state(fs, dev_idx, new_state, flags);
+
+ return 0;
+}
+
+static void device_resize_usage(void)
+{
+ puts("bcachefs device resize \n"
+ "Usage: bcachefs device resize device [ size ]\n"
+ "\n"
+ "Options:\n"
+ " -h, --help display this help and exit\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+ exit(EXIT_SUCCESS);
+}
+
+int cmd_device_resize(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "help", 0, NULL, 'h' },
+ { NULL }
+ };
+ u64 size;
+ int opt;
+
+ while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
+ switch (opt) {
+ case 'h':
+ device_resize_usage();
+ }
+ args_shift(optind);
+
+ char *dev = arg_pop();
+ if (!dev)
+ die("Please supply a device to resize");
+
+ int dev_fd = xopen(dev, O_RDONLY);
+
+ char *size_arg = arg_pop();
+ if (!size_arg)
+ size = get_size(dev_fd);
+ else if (bch2_strtoull_h(size_arg, &size))
+ die("invalid size");
+
+ size >>= 9;
+
+ if (argc)
+ die("Too many arguments");
+
+ struct stat dev_stat = xfstat(dev_fd);
+
+ struct mntent *mount = dev_to_mount(dev);
+ if (mount) {
+ if (!S_ISBLK(dev_stat.st_mode))
+ die("%s is mounted but isn't a block device?!", dev);
+
+ printf("Doing online resize of %s\n", dev);
+
+ struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
+
+ unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
+
+ struct bch_sb *sb = bchu_read_super(fs, -1);
+ if (idx >= sb->nr_devices)
+ die("error reading superblock: dev idx >= sb->nr_devices");
+
+ struct bch_member m = bch2_sb_member_get(sb, idx);
+
+ u64 nbuckets = size / le16_to_cpu(m.bucket_size);
+
+ if (nbuckets < le64_to_cpu(m.nbuckets))
+ die("Shrinking not supported yet");
+
+ printf("resizing %s to %llu buckets\n", dev, nbuckets);
+ bchu_disk_resize(fs, idx, nbuckets);
+ } else {
+ printf("Doing offline resize of %s\n", dev);
+
+ struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
+ if (IS_ERR(c))
+ die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
+
+ struct bch_dev *resize = NULL;
+
+ for_each_online_member(c, ca) {
+ if (resize)
+ die("confused: more than one online device?");
+ resize = ca;
+ percpu_ref_get(&resize->io_ref);
+ }
+
+ u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
+
+ if (nbuckets < le64_to_cpu(resize->mi.nbuckets))
+ die("Shrinking not supported yet");
+
+ printf("resizing %s to %llu buckets\n", dev, nbuckets);
+ int ret = bch2_dev_resize(c, resize, nbuckets);
+ if (ret)
+ fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
+
+ percpu_ref_put(&resize->io_ref);
+ bch2_fs_stop(c);
+ }
+ return 0;
+}
+
+static void device_resize_journal_usage(void)
+{
+ puts("bcachefs device resize-journal \n"
+ "Usage: bcachefs device resize-journal device size\n"
+ "\n"
+ "Options:\n"
+ " -h, --help display this help and exit\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+ exit(EXIT_SUCCESS);
+}
+
+int cmd_device_resize_journal(int argc, char *argv[])
+{
+ static const struct option longopts[] = {
+ { "help", 0, NULL, 'h' },
+ { NULL }
+ };
+ u64 size;
+ int opt;
+
+ while ((opt = getopt_long(argc, argv, "h", longopts, NULL)) != -1)
+ switch (opt) {
+ case 'h':
+ device_resize_journal_usage();
+ }
+ args_shift(optind);
+
+ char *dev = arg_pop();
+ if (!dev)
+ die("Please supply a device");
+
+ int dev_fd = xopen(dev, O_RDONLY);
+
+ char *size_arg = arg_pop();
+ if (!size_arg)
+ die("Please supply a journal size");
+ else if (bch2_strtoull_h(size_arg, &size))
+ die("invalid size");
+
+ size >>= 9;
+
+ if (argc)
+ die("Too many arguments");
+
+ struct stat dev_stat = xfstat(dev_fd);
+
+ struct mntent *mount = dev_to_mount(dev);
+ if (mount) {
+ if (!S_ISBLK(dev_stat.st_mode))
+ die("%s is mounted but isn't a block device?!", dev);
+
+ struct bchfs_handle fs = bcache_fs_open(mount->mnt_dir);
+
+ unsigned idx = bchu_disk_get_idx(fs, dev_stat.st_rdev);
+
+ struct bch_sb *sb = bchu_read_super(fs, -1);
+ if (idx >= sb->nr_devices)
+ die("error reading superblock: dev idx >= sb->nr_devices");
+
+ struct bch_member m = bch2_sb_member_get(sb, idx);
+
+ u64 nbuckets = size / le16_to_cpu(m.bucket_size);
+
+ printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
+ bchu_disk_resize_journal(fs, idx, nbuckets);
+ } else {
+ printf("%s is offline - starting:\n", dev);
+
+ struct bch_fs *c = bch2_fs_open(&dev, 1, bch2_opts_empty());
+ if (IS_ERR(c))
+ die("error opening %s: %s", dev, bch2_err_str(PTR_ERR(c)));
+
+ struct bch_dev *resize = NULL;
+
+ for_each_online_member(c, ca) {
+ if (resize)
+ die("confused: more than one online device?");
+ resize = ca;
+ percpu_ref_get(&resize->io_ref);
+ }
+
+ u64 nbuckets = size / le16_to_cpu(resize->mi.bucket_size);
+
+ printf("resizing journal on %s to %llu buckets\n", dev, nbuckets);
+ int ret = bch2_set_nr_journal_buckets(c, resize, nbuckets);
+ if (ret)
+ fprintf(stderr, "resize error: %s\n", bch2_err_str(ret));
+
+ percpu_ref_put(&resize->io_ref);
+ bch2_fs_stop(c);
+ }
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 21:24:44 +0000