/* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #include #include #include #include #include #include #include #include #include #include "kerncompat.h" #include "ctree.h" #include "ioctl.h" #include "utils.h" #include "volumes.h" #include "cmds-fi-usage.h" #include "commands.h" static const char * const device_cmd_group_usage[] = { "btrfs device []", NULL }; static const char * const cmd_device_add_usage[] = { "btrfs device add [options] [...] ", "Add a device to a filesystem", "-K|--nodiscard do not perform whole device TRIM", "-f|--force force overwrite existing filesystem on the disk", NULL }; static int cmd_device_add(int argc, char **argv) { char *mntpnt; int i, fdmnt, ret=0, e; DIR *dirstream = NULL; int discard = 1; int force = 0; while (1) { int c; static const struct option long_options[] = { { "nodiscard", optional_argument, NULL, 'K'}, { "force", no_argument, NULL, 'f'}, { NULL, 0, NULL, 0} }; c = getopt_long(argc, argv, "Kf", long_options, NULL); if (c < 0) break; switch (c) { case 'K': discard = 0; break; case 'f': force = 1; break; default: usage(cmd_device_add_usage); } } argc = argc - optind; if (check_argc_min(argc, 2)) usage(cmd_device_add_usage); mntpnt = argv[optind + argc - 1]; fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1); if (fdmnt < 0) return 1; for (i = optind; i < optind + argc - 1; i++){ struct btrfs_ioctl_vol_args ioctl_args; int devfd, res; u64 dev_block_count = 0; int mixed = 0; char *path; res = test_dev_for_mkfs(argv[i], force); if (res) { ret++; continue; } devfd = open(argv[i], O_RDWR); if (devfd < 0) { fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]); ret++; continue; } res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count, 0, &mixed, discard); close(devfd); if (res) { ret++; goto error_out; } path = canonicalize_path(argv[i]); if (!path) { fprintf(stderr, "ERROR: Could not canonicalize pathname '%s': %s\n", argv[i], strerror(errno)); ret++; goto error_out; } memset(&ioctl_args, 0, sizeof(ioctl_args)); strncpy_null(ioctl_args.name, path); res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args); e = errno; if (res < 0) { fprintf(stderr, "ERROR: error adding the device '%s' - %s\n", path, strerror(e)); ret++; } free(path); } error_out: close_file_or_dir(fdmnt, dirstream); btrfs_close_all_devices(); return !!ret; } static int _cmd_device_remove(int argc, char **argv, const char * const *usagestr) { char *mntpnt; int i, fdmnt, ret=0, e; DIR *dirstream = NULL; if (check_argc_min(argc, 3)) usage(usagestr); mntpnt = argv[argc - 1]; fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1); if (fdmnt < 0) return 1; for(i=1 ; i < argc - 1; i++ ){ struct btrfs_ioctl_vol_args arg; int res; if (!is_block_device(argv[i])) { fprintf(stderr, "ERROR: %s is not a block device\n", argv[i]); ret++; continue; } memset(&arg, 0, sizeof(arg)); strncpy_null(arg.name, argv[i]); res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg); e = errno; if (res) { const char *msg; if (res > 0) msg = btrfs_err_str(res); else msg = strerror(e); fprintf(stderr, "ERROR: error removing the device '%s' - %s\n", argv[i], msg); ret++; } } close_file_or_dir(fdmnt, dirstream); return !!ret; } static const char * const cmd_device_remove_usage[] = { "btrfs device remove [...] ", "Remove a device from a filesystem", NULL }; static int cmd_device_remove(int argc, char **argv) { return _cmd_device_remove(argc, argv, cmd_device_remove_usage); } static const char * const cmd_device_delete_usage[] = { "btrfs device delete [...] ", "Remove a device from a filesystem", NULL }; static int cmd_device_delete(int argc, char **argv) { return _cmd_device_remove(argc, argv, cmd_device_delete_usage); } static const char * const cmd_device_scan_usage[] = { "btrfs device scan [(-d|--all-devices)| [...]]", "Scan devices for a btrfs filesystem", " -d|--all-devices (deprecated)", NULL }; static int cmd_device_scan(int argc, char **argv) { int i; int devstart = 1; int all = 0; int ret = 0; optind = 1; while (1) { int c; static const struct option long_options[] = { { "all-devices", no_argument, NULL, 'd'}, { NULL, 0, NULL, 0} }; c = getopt_long(argc, argv, "d", long_options, NULL); if (c < 0) break; switch (c) { case 'd': all = 1; break; default: usage(cmd_device_scan_usage); } } if (all && check_argc_max(argc, 2)) usage(cmd_device_scan_usage); if (all || argc == 1) { printf("Scanning for Btrfs filesystems\n"); ret = btrfs_scan_lblkid(); if (ret) fprintf(stderr, "ERROR: error %d while scanning\n", ret); ret = btrfs_register_all_devices(); if (ret) fprintf(stderr, "ERROR: error %d while registering\n", ret); goto out; } for( i = devstart ; i < argc ; i++ ){ char *path; if (!is_block_device(argv[i])) { fprintf(stderr, "ERROR: %s is not a block device\n", argv[i]); ret = 1; goto out; } path = canonicalize_path(argv[i]); if (!path) { fprintf(stderr, "ERROR: Could not canonicalize path '%s': %s\n", argv[i], strerror(errno)); ret = 1; goto out; } printf("Scanning for Btrfs filesystems in '%s'\n", path); if (btrfs_register_one_device(path) != 0) { ret = 1; free(path); goto out; } free(path); } out: btrfs_close_all_devices(); return !!ret; } static const char * const cmd_device_ready_usage[] = { "btrfs device ready ", "Check device to see if it has all of its devices in cache for mounting", NULL }; static int cmd_device_ready(int argc, char **argv) { struct btrfs_ioctl_vol_args args; int fd; int ret; char *path; if (check_argc_min(argc, 2)) usage(cmd_device_ready_usage); fd = open("/dev/btrfs-control", O_RDWR); if (fd < 0) { perror("failed to open /dev/btrfs-control"); return 1; } path = canonicalize_path(argv[argc - 1]); if (!path) { fprintf(stderr, "ERROR: Could not canonicalize pathname '%s': %s\n", argv[argc - 1], strerror(errno)); ret = 1; goto out; } if (!is_block_device(path)) { fprintf(stderr, "ERROR: %s is not a block device\n", path); ret = 1; goto out; } memset(&args, 0, sizeof(args)); strncpy_null(args.name, path); ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args); if (ret < 0) { fprintf(stderr, "ERROR: unable to determine if the device '%s'" " is ready for mounting - %s\n", path, strerror(errno)); ret = 1; } out: free(path); close(fd); return ret; } static const char * const cmd_device_stats_usage[] = { "btrfs device stats [-z] |", "Show current device IO stats.", "", "-z show current stats and reset values to zero", NULL }; static int cmd_device_stats(int argc, char **argv) { char *dev_path; struct btrfs_ioctl_fs_info_args fi_args; struct btrfs_ioctl_dev_info_args *di_args = NULL; int ret; int fdmnt; int i; int c; int err = 0; __u64 flags = 0; DIR *dirstream = NULL; optind = 1; while ((c = getopt(argc, argv, "z")) != -1) { switch (c) { case 'z': flags = BTRFS_DEV_STATS_RESET; break; case '?': default: usage(cmd_device_stats_usage); } } argc = argc - optind; if (check_argc_exact(argc, 1)) usage(cmd_device_stats_usage); dev_path = argv[optind]; fdmnt = open_path_or_dev_mnt(dev_path, &dirstream); if (fdmnt < 0) { if (errno == EINVAL) fprintf(stderr, "ERROR: '%s' is not a mounted btrfs device\n", dev_path); else fprintf(stderr, "ERROR: can't access '%s': %s\n", dev_path, strerror(errno)); return 1; } ret = get_fs_info(dev_path, &fi_args, &di_args); if (ret) { fprintf(stderr, "ERROR: getting dev info for devstats failed: " "%s\n", strerror(-ret)); err = 1; goto out; } if (!fi_args.num_devices) { fprintf(stderr, "ERROR: no devices found\n"); err = 1; goto out; } for (i = 0; i < fi_args.num_devices; i++) { struct btrfs_ioctl_get_dev_stats args = {0}; __u8 path[BTRFS_DEVICE_PATH_NAME_MAX + 1]; strncpy((char *)path, (char *)di_args[i].path, BTRFS_DEVICE_PATH_NAME_MAX); path[BTRFS_DEVICE_PATH_NAME_MAX] = '\0'; args.devid = di_args[i].devid; args.nr_items = BTRFS_DEV_STAT_VALUES_MAX; args.flags = flags; if (ioctl(fdmnt, BTRFS_IOC_GET_DEV_STATS, &args) < 0) { fprintf(stderr, "ERROR: ioctl(BTRFS_IOC_GET_DEV_STATS) on %s failed: %s\n", path, strerror(errno)); err = 1; } else { char *canonical_path; canonical_path = canonicalize_path((char *)path); if (args.nr_items >= BTRFS_DEV_STAT_WRITE_ERRS + 1) printf("[%s].write_io_errs %llu\n", canonical_path, (unsigned long long) args.values[ BTRFS_DEV_STAT_WRITE_ERRS]); if (args.nr_items >= BTRFS_DEV_STAT_READ_ERRS + 1) printf("[%s].read_io_errs %llu\n", canonical_path, (unsigned long long) args.values[ BTRFS_DEV_STAT_READ_ERRS]); if (args.nr_items >= BTRFS_DEV_STAT_FLUSH_ERRS + 1) printf("[%s].flush_io_errs %llu\n", canonical_path, (unsigned long long) args.values[ BTRFS_DEV_STAT_FLUSH_ERRS]); if (args.nr_items >= BTRFS_DEV_STAT_CORRUPTION_ERRS + 1) printf("[%s].corruption_errs %llu\n", canonical_path, (unsigned long long) args.values[ BTRFS_DEV_STAT_CORRUPTION_ERRS]); if (args.nr_items >= BTRFS_DEV_STAT_GENERATION_ERRS + 1) printf("[%s].generation_errs %llu\n", canonical_path, (unsigned long long) args.values[ BTRFS_DEV_STAT_GENERATION_ERRS]); free(canonical_path); } } out: free(di_args); close_file_or_dir(fdmnt, dirstream); btrfs_close_all_devices(); return err; } static const char * const cmd_device_usage_usage[] = { "btrfs device usage [options] [..]", "Show detailed information about internal allocations in devices.", HELPINFO_OUTPUT_UNIT_DF, NULL }; static int _cmd_device_usage(int fd, char *path, unsigned unit_mode) { int i; int ret = 0; struct chunk_info *chunkinfo = NULL; struct device_info *devinfo = NULL; int chunkcount = 0; int devcount = 0; ret = load_chunk_and_device_info(fd, &chunkinfo, &chunkcount, &devinfo, &devcount); if (ret) goto out; for (i = 0; i < devcount; i++) { printf("%s, ID: %llu\n", devinfo[i].path, devinfo[i].devid); print_device_sizes(fd, &devinfo[i], unit_mode); print_device_chunks(fd, &devinfo[i], chunkinfo, chunkcount, unit_mode); printf("\n"); } out: free(devinfo); free(chunkinfo); return ret; } static int cmd_device_usage(int argc, char **argv) { unsigned unit_mode; int ret = 0; int more_than_one = 0; int i; unit_mode = get_unit_mode_from_arg(&argc, argv, 1); if (check_argc_min(argc, 2) || argv[1][0] == '-') usage(cmd_device_usage_usage); for (i = 1; i < argc; i++) { int fd; DIR *dirstream = NULL; if (more_than_one) printf("\n"); fd = btrfs_open_dir(argv[i], &dirstream, 1); if (fd < 0) { ret = 1; goto out; } ret = _cmd_device_usage(fd, argv[i], unit_mode); close_file_or_dir(fd, dirstream); if (ret) goto out; more_than_one = 1; } out: return !!ret; } static const char device_cmd_group_info[] = "manage and query devices in the filesystem"; const struct cmd_group device_cmd_group = { device_cmd_group_usage, device_cmd_group_info, { { "add", cmd_device_add, cmd_device_add_usage, NULL, 0 }, { "delete", cmd_device_delete, cmd_device_delete_usage, NULL, CMD_ALIAS }, { "remove", cmd_device_remove, cmd_device_remove_usage, NULL, 0 }, { "scan", cmd_device_scan, cmd_device_scan_usage, NULL, 0 }, { "ready", cmd_device_ready, cmd_device_ready_usage, NULL, 0 }, { "stats", cmd_device_stats, cmd_device_stats_usage, NULL, 0 }, { "usage", cmd_device_usage, cmd_device_usage_usage, NULL, 0 }, NULL_CMD_STRUCT } }; int cmd_device(int argc, char **argv) { return handle_command_group(&device_cmd_group, argc, argv); }