mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-24 15:12:47 +00:00
568f9ed26f
Check if the target file system is flagged as ZONED. If it is, the device to be added is flagged PREP_DEVICE_ZONED. Also add checks to prevent mixing non-zoned devices and zoned devices. Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
803 lines
20 KiB
C
803 lines
20 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <getopt.h>
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#include "kerncompat.h"
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#include "kernel-shared/ctree.h"
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#include "ioctl.h"
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#include "common/utils.h"
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#include "kernel-shared/volumes.h"
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#include "kernel-shared/zoned.h"
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#include "cmds/filesystem-usage.h"
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#include "cmds/commands.h"
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#include "common/help.h"
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#include "common/path-utils.h"
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#include "common/device-utils.h"
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#include "common/device-scan.h"
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#include "common/format-output.h"
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#include "mkfs/common.h"
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static const char * const device_cmd_group_usage[] = {
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"btrfs device <command> [<args>]",
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NULL
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};
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static const char * const cmd_device_add_usage[] = {
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"btrfs device add [options] <device> [<device>...] <path>",
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"Add one or more devices to a mounted filesystem.",
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"",
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"-K|--nodiscard do not perform whole device TRIM on devices that report such capability",
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"-f|--force force overwrite existing filesystem on the disk",
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"--enqueue wait if there's another exclusive operation running,",
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" otherwise continue",
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NULL
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};
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static int cmd_device_add(const struct cmd_struct *cmd,
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int argc, char **argv)
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{
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char *mntpnt;
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int i, fdmnt, ret = 0;
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DIR *dirstream = NULL;
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int discard = 1;
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int force = 0;
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int last_dev;
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bool enqueue = false;
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int zoned;
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struct btrfs_ioctl_feature_flags feature_flags;
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optind = 0;
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while (1) {
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int c;
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enum { GETOPT_VAL_ENQUEUE = 256 };
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static const struct option long_options[] = {
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{ "nodiscard", optional_argument, NULL, 'K'},
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{ "force", no_argument, NULL, 'f'},
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{ "enqueue", no_argument, NULL, GETOPT_VAL_ENQUEUE},
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{ NULL, 0, NULL, 0}
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};
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c = getopt_long(argc, argv, "Kf", long_options, NULL);
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if (c < 0)
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break;
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switch (c) {
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case 'K':
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discard = 0;
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break;
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case 'f':
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force = 1;
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break;
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case GETOPT_VAL_ENQUEUE:
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enqueue = true;
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break;
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default:
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usage_unknown_option(cmd, argv);
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}
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}
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if (check_argc_min(argc - optind, 2))
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return 1;
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last_dev = argc - 1;
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mntpnt = argv[last_dev];
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fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
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if (fdmnt < 0)
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return 1;
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ret = check_running_fs_exclop(fdmnt, BTRFS_EXCLOP_DEV_ADD, enqueue);
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if (ret != 0) {
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if (ret < 0)
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error("unable to check status of exclusive operation: %m");
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close_file_or_dir(fdmnt, dirstream);
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return 1;
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}
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ret = ioctl(fdmnt, BTRFS_IOC_GET_FEATURES, &feature_flags);
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if (ret) {
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error("error getting feature flags '%s': %m", mntpnt);
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return 1;
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}
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zoned = (feature_flags.incompat_flags & BTRFS_FEATURE_INCOMPAT_ZONED);
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for (i = optind; i < last_dev; i++){
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struct btrfs_ioctl_vol_args ioctl_args;
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int devfd, res;
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u64 dev_block_count = 0;
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char *path;
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if (!zoned && zoned_model(argv[i]) == ZONED_HOST_MANAGED) {
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error(
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"zoned: cannot add host-managed zoned device to non-zoned filesystem '%s'",
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argv[i]);
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ret++;
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continue;
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}
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res = test_dev_for_mkfs(argv[i], force);
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if (res) {
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ret++;
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continue;
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}
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devfd = open(argv[i], O_RDWR);
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if (devfd < 0) {
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error("unable to open device '%s'", argv[i]);
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ret++;
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continue;
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}
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res = btrfs_prepare_device(devfd, argv[i], &dev_block_count, 0,
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PREP_DEVICE_ZERO_END | PREP_DEVICE_VERBOSE |
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(discard ? PREP_DEVICE_DISCARD : 0) |
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(zoned ? PREP_DEVICE_ZONED : 0));
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close(devfd);
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if (res) {
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ret++;
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goto error_out;
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}
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path = path_canonicalize(argv[i]);
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if (!path) {
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error("could not canonicalize pathname '%s': %m",
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argv[i]);
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ret++;
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goto error_out;
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}
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memset(&ioctl_args, 0, sizeof(ioctl_args));
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strncpy_null(ioctl_args.name, path);
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res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
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if (res < 0) {
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error("error adding device '%s': %m", path);
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ret++;
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}
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free(path);
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}
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error_out:
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btrfs_warn_multiple_profiles(fdmnt);
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close_file_or_dir(fdmnt, dirstream);
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return !!ret;
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}
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static DEFINE_SIMPLE_COMMAND(device_add, "add");
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static int _cmd_device_remove(const struct cmd_struct *cmd,
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int argc, char **argv)
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{
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char *mntpnt;
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int i, fdmnt, ret = 0;
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DIR *dirstream = NULL;
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bool enqueue = false;
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optind = 0;
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while (1) {
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int c;
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enum { GETOPT_VAL_ENQUEUE = 256 };
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static const struct option long_options[] = {
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{ "enqueue", no_argument, NULL, GETOPT_VAL_ENQUEUE},
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{ NULL, 0, NULL, 0}
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};
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c = getopt_long(argc, argv, "", long_options, NULL);
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if (c < 0)
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break;
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switch (c) {
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case GETOPT_VAL_ENQUEUE:
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enqueue = true;
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break;
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default:
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usage_unknown_option(cmd, argv);
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}
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}
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if (check_argc_min(argc - optind, 2))
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return 1;
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mntpnt = argv[argc - 1];
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fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
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if (fdmnt < 0)
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return 1;
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ret = check_running_fs_exclop(fdmnt, BTRFS_EXCLOP_DEV_REMOVE, enqueue);
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if (ret != 0) {
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if (ret < 0)
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error("unable to check status of exclusive operation: %m");
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close_file_or_dir(fdmnt, dirstream);
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return 1;
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}
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for(i = optind; i < argc - 1; i++) {
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struct btrfs_ioctl_vol_args arg;
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struct btrfs_ioctl_vol_args_v2 argv2 = {0};
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int is_devid = 0;
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int res;
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if (string_is_numerical(argv[i])) {
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argv2.devid = arg_strtou64(argv[i]);
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argv2.flags = BTRFS_DEVICE_SPEC_BY_ID;
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is_devid = 1;
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} else if (path_is_block_device(argv[i]) == 1 ||
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strcmp(argv[i], "missing") == 0) {
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strncpy_null(argv2.name, argv[i]);
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} else {
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error("not a block device: %s", argv[i]);
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ret++;
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continue;
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}
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/*
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* Positive values are from BTRFS_ERROR_DEV_*,
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* otherwise it's a generic error, one of errnos
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*/
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res = ioctl(fdmnt, BTRFS_IOC_RM_DEV_V2, &argv2);
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/*
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* If BTRFS_IOC_RM_DEV_V2 is not supported we get ENOTTY and if
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* argv2.flags includes a flag which kernel doesn't understand then
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* we shall get EOPNOTSUPP
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*/
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if (res < 0 && (errno == ENOTTY || errno == EOPNOTSUPP)) {
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if (is_devid) {
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error("device delete by id failed: %m");
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ret++;
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continue;
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}
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memset(&arg, 0, sizeof(arg));
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strncpy_null(arg.name, argv[i]);
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res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
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}
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if (res) {
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const char *msg;
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if (res > 0)
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msg = btrfs_err_str(res);
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else
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msg = strerror(errno);
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if (is_devid) {
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error("error removing devid %llu: %s",
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(unsigned long long)argv2.devid, msg);
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} else {
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error("error removing device '%s': %s",
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argv[i], msg);
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}
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ret++;
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}
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}
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btrfs_warn_multiple_profiles(fdmnt);
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close_file_or_dir(fdmnt, dirstream);
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return !!ret;
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}
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#define COMMON_USAGE_REMOVE_DELETE \
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"Remove a device from a filesystem, specified by a path to the device or", \
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"as a device id in the filesystem. The btrfs signature is removed from", \
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"the device.", \
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"If 'missing' is specified for <device>, the first device that is", \
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"described by the filesystem metadata, but not present at the mount", \
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"time will be removed. (only in degraded mode)"
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static const char * const cmd_device_remove_usage[] = {
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"btrfs device remove <device>|<devid> [<device>|<devid>...] <path>",
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"Remove a device from a filesystem",
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COMMON_USAGE_REMOVE_DELETE,
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"",
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"--enqueue wait if there's another exclusive operation running,",
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" otherwise continue",
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NULL
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};
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static int cmd_device_remove(const struct cmd_struct *cmd,
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int argc, char **argv)
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{
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return _cmd_device_remove(cmd, argc, argv);
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}
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static DEFINE_SIMPLE_COMMAND(device_remove, "remove");
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static const char * const cmd_device_delete_usage[] = {
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"btrfs device delete <device>|<devid> [<device>|<devid>...] <path>",
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"Remove a device from a filesystem (alias of \"btrfs device remove\")",
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COMMON_USAGE_REMOVE_DELETE,
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"",
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"--enqueue wait if there's another exclusive operation running,",
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" otherwise continue",
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NULL
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};
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static int cmd_device_delete(const struct cmd_struct *cmd,
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int argc, char **argv)
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{
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return _cmd_device_remove(cmd, argc, argv);
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}
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static DEFINE_COMMAND(device_delete, "delete", cmd_device_delete,
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cmd_device_delete_usage, NULL, CMD_ALIAS);
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static int btrfs_forget_devices(const char *path)
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{
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struct btrfs_ioctl_vol_args args;
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int ret;
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int fd;
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fd = open("/dev/btrfs-control", O_RDWR);
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if (fd < 0)
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return -errno;
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memset(&args, 0, sizeof(args));
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if (path)
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strncpy_null(args.name, path);
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ret = ioctl(fd, BTRFS_IOC_FORGET_DEV, &args);
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if (ret)
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ret = -errno;
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close(fd);
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return ret;
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}
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static const char * const cmd_device_scan_usage[] = {
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"btrfs device scan [-d|--all-devices] <device> [<device>...]\n"
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"btrfs device scan -u|--forget [<device>...]",
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"Scan or forget (unregister) devices of btrfs filesystems",
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"Scan or forget (unregister) devices of btrfs filesystems. Multi-device",
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"filesystems need to scan devices before mount. The blkid provides list",
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"of devices in case no path is given. If blkid is no available, there's",
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"a fallback to manual enumeration of device nodes.",
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"",
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"The reverse is done by the forget option, such devices must be unmounted.",
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"No argument will unregister all devices that are not part of a mounted filesystem.",
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"",
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" -d|--all-devices enumerate and register all devices, use as a fallback",
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" if blkid is not available",
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" -u|--forget [<device>...] unregister a given device or all stale devices if no path ",
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HELPINFO_INSERT_GLOBALS,
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HELPINFO_INSERT_VERBOSE,
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HELPINFO_INSERT_QUIET,
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NULL
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};
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static int cmd_device_scan(const struct cmd_struct *cmd, int argc, char **argv)
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{
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int i;
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int devstart;
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int all = 0;
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int ret = 0;
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int forget = 0;
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optind = 0;
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while (1) {
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int c;
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static const struct option long_options[] = {
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{ "all-devices", no_argument, NULL, 'd'},
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{ "forget", no_argument, NULL, 'u'},
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{ NULL, 0, NULL, 0}
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};
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c = getopt_long(argc, argv, "du", long_options, NULL);
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if (c < 0)
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break;
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switch (c) {
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case 'd':
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all = 1;
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break;
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case 'u':
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forget = 1;
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break;
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default:
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usage_unknown_option(cmd, argv);
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}
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}
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devstart = optind;
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if (all && forget)
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usage(cmd);
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if (all && check_argc_max(argc - optind, 1))
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usage(cmd);
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if (all || argc - optind == 0) {
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if (forget) {
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ret = btrfs_forget_devices(NULL);
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if (ret < 0) {
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errno = -ret;
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error("cannot unregister devices: %m");
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}
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} else {
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pr_verbose(-1, "Scanning for Btrfs filesystems\n");
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ret = btrfs_scan_devices(1);
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error_on(ret, "error %d while scanning", ret);
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ret = btrfs_register_all_devices();
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error_on(ret,
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"there were %d errors while registering devices",
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ret);
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}
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goto out;
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}
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for( i = devstart ; i < argc ; i++ ){
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char *path;
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if (path_is_block_device(argv[i]) != 1) {
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error("not a block device: %s", argv[i]);
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ret = 1;
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goto out;
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}
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path = path_canonicalize(argv[i]);
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if (!path) {
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error("could not canonicalize path '%s': %m", argv[i]);
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ret = 1;
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goto out;
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}
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if (forget) {
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ret = btrfs_forget_devices(path);
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if (ret < 0) {
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errno = -ret;
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error("cannot unregister device '%s': %m", path);
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}
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} else {
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printf("Scanning for btrfs filesystems on '%s'\n", path);
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if (btrfs_register_one_device(path) != 0) {
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ret = 1;
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free(path);
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goto out;
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}
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}
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free(path);
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}
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out:
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return !!ret;
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}
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static DEFINE_SIMPLE_COMMAND(device_scan, "scan");
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static const char * const cmd_device_ready_usage[] = {
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"btrfs device ready <device>",
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"Check and wait until a group of devices of a filesystem is ready for mount",
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NULL
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};
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static int cmd_device_ready(const struct cmd_struct *cmd, int argc, char **argv)
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{
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struct btrfs_ioctl_vol_args args;
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int fd;
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int ret;
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char *path;
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clean_args_no_options(cmd, argc, argv);
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if (check_argc_exact(argc - optind, 1))
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return 1;
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fd = open("/dev/btrfs-control", O_RDWR);
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if (fd < 0) {
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perror("failed to open /dev/btrfs-control");
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return 1;
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}
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path = path_canonicalize(argv[optind]);
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if (!path) {
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error("could not canonicalize pathname '%s': %m",
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argv[optind]);
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ret = 1;
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goto out;
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}
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if (path_is_block_device(path) != 1) {
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error("not a block device: %s", path);
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ret = 1;
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goto out;
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}
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memset(&args, 0, sizeof(args));
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strncpy_null(args.name, path);
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ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
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if (ret < 0) {
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error("unable to determine if device '%s' is ready for mount: %m",
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path);
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|
ret = 1;
|
|
}
|
|
|
|
out:
|
|
free(path);
|
|
close(fd);
|
|
return ret;
|
|
}
|
|
static DEFINE_SIMPLE_COMMAND(device_ready, "ready");
|
|
|
|
static const struct rowspec device_stats_rowspec[] = {
|
|
{ .key = "device", .fmt = "%s", .out_text = "device", .out_json = "device" },
|
|
{ .key = "devid", .fmt = "%u", .out_text = "devid", .out_json = "devid" },
|
|
{ .key = "write_io_errs", .fmt = "%llu", .out_text = "write_io_errs", .out_json = "write_io_errs" },
|
|
{ .key = "read_io_errs", .fmt = "%llu", .out_text = "read_io_errs", .out_json = "read_io_errs" },
|
|
{ .key = "flush_io_errs", .fmt = "%llu", .out_text = "flush_io_errs", .out_json = "flush_io_errs" },
|
|
{ .key = "corruption_errs", .fmt = "%llu", .out_text = "corruption_errs", .out_json = "corruption_errs" },
|
|
{ .key = "generation_errs", .fmt = "%llu", .out_text = "generation_errs", .out_json = "generation_errs" },
|
|
ROWSPEC_END
|
|
};
|
|
|
|
static const char * const cmd_device_stats_usage[] = {
|
|
"btrfs device stats [options] <path>|<device>",
|
|
"Show device IO error statistics",
|
|
"Show device IO error statistics for all devices of the given filesystem",
|
|
"identified by PATH or DEVICE. The filesystem must be mounted.",
|
|
"",
|
|
"-c|--check return non-zero if any stat counter is not zero",
|
|
"-z|--reset show current stats and reset values to zero",
|
|
HELPINFO_INSERT_GLOBALS,
|
|
HELPINFO_INSERT_FORMAT,
|
|
NULL
|
|
};
|
|
|
|
static int cmd_device_stats(const struct cmd_struct *cmd, 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 err = 0;
|
|
int check = 0;
|
|
__u64 flags = 0;
|
|
DIR *dirstream = NULL;
|
|
struct format_ctx fctx;
|
|
|
|
optind = 0;
|
|
while (1) {
|
|
int c;
|
|
static const struct option long_options[] = {
|
|
{"check", no_argument, NULL, 'c'},
|
|
{"reset", no_argument, NULL, 'z'},
|
|
{NULL, 0, NULL, 0}
|
|
};
|
|
|
|
c = getopt_long(argc, argv, "cz", long_options, NULL);
|
|
if (c < 0)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'c':
|
|
check = 1;
|
|
break;
|
|
case 'z':
|
|
flags = BTRFS_DEV_STATS_RESET;
|
|
break;
|
|
default:
|
|
usage_unknown_option(cmd, argv);
|
|
}
|
|
}
|
|
|
|
if (check_argc_exact(argc - optind, 1))
|
|
return 1;
|
|
|
|
dev_path = argv[optind];
|
|
|
|
fdmnt = open_path_or_dev_mnt(dev_path, &dirstream, 1);
|
|
if (fdmnt < 0)
|
|
return 1;
|
|
|
|
ret = get_fs_info(dev_path, &fi_args, &di_args);
|
|
if (ret) {
|
|
errno = -ret;
|
|
error("getting device info for %s failed: %m", dev_path);
|
|
err = 1;
|
|
goto out;
|
|
}
|
|
if (!fi_args.num_devices) {
|
|
error("no devices found");
|
|
err = 1;
|
|
goto out;
|
|
}
|
|
|
|
fmt_start(&fctx, device_stats_rowspec, 24, 0);
|
|
fmt_print_start_group(&fctx, "device-stats", JSON_TYPE_ARRAY);
|
|
for (i = 0; i < fi_args.num_devices; i++) {
|
|
struct btrfs_ioctl_get_dev_stats args = {0};
|
|
char path[BTRFS_DEVICE_PATH_NAME_MAX + 1];
|
|
|
|
strncpy(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) {
|
|
error("device stats ioctl failed on %s: %m",
|
|
path);
|
|
err |= 1;
|
|
} else {
|
|
char *canonical_path;
|
|
char devid_str[32];
|
|
int j;
|
|
static const struct {
|
|
const char name[32];
|
|
u64 num;
|
|
} dev_stats[] = {
|
|
{ "write_io_errs", BTRFS_DEV_STAT_WRITE_ERRS },
|
|
{ "read_io_errs", BTRFS_DEV_STAT_READ_ERRS },
|
|
{ "flush_io_errs", BTRFS_DEV_STAT_FLUSH_ERRS },
|
|
{ "corruption_errs",
|
|
BTRFS_DEV_STAT_CORRUPTION_ERRS },
|
|
{ "generation_errs",
|
|
BTRFS_DEV_STAT_GENERATION_ERRS },
|
|
};
|
|
/*
|
|
* The plain text and json formats cannot be
|
|
* mapped directly in all cases and we have to switch
|
|
*/
|
|
const bool json = (bconf.output_format == CMD_FORMAT_JSON);
|
|
|
|
canonical_path = path_canonicalize(path);
|
|
|
|
/* No path when device is missing. */
|
|
if (!canonical_path) {
|
|
canonical_path = malloc(32);
|
|
if (!canonical_path) {
|
|
error("not enough memory for path buffer");
|
|
goto out;
|
|
}
|
|
snprintf(canonical_path, 32,
|
|
"devid:%llu", args.devid);
|
|
}
|
|
snprintf(devid_str, 32, "%llu", args.devid);
|
|
fmt_print_start_group(&fctx, NULL, JSON_TYPE_MAP);
|
|
/* Plain text does not print device info */
|
|
if (json) {
|
|
fmt_print(&fctx, "device", canonical_path);
|
|
fmt_print(&fctx, "devid", di_args[i].devid);
|
|
}
|
|
|
|
for (j = 0; j < ARRAY_SIZE(dev_stats); j++) {
|
|
/* We got fewer items than we know */
|
|
if (args.nr_items < dev_stats[j].num + 1)
|
|
continue;
|
|
|
|
/* Own format due to [/dev/name].value */
|
|
if (json) {
|
|
fmt_print(&fctx, dev_stats[j].name,
|
|
args.values[dev_stats[j].num]);
|
|
} else {
|
|
printf("[%s].%-16s %llu\n",
|
|
canonical_path,
|
|
dev_stats[j].name,
|
|
(unsigned long long)
|
|
args.values[dev_stats[j].num]);
|
|
}
|
|
if ((check == 1)
|
|
&& (args.values[dev_stats[j].num] > 0))
|
|
err |= 64;
|
|
}
|
|
fmt_print_end_group(&fctx, NULL);
|
|
free(canonical_path);
|
|
}
|
|
}
|
|
|
|
fmt_print_end_group(&fctx, "device-stats");
|
|
fmt_end(&fctx);
|
|
|
|
out:
|
|
free(di_args);
|
|
close_file_or_dir(fdmnt, dirstream);
|
|
|
|
return err;
|
|
}
|
|
static DEFINE_COMMAND_WITH_FLAGS(device_stats, "stats", CMD_FORMAT_JSON);
|
|
|
|
static const char * const cmd_device_usage_usage[] = {
|
|
"btrfs device usage [options] <path> [<path>..]",
|
|
"Show detailed information about internal allocations in devices.",
|
|
"",
|
|
HELPINFO_UNITS_SHORT_LONG,
|
|
NULL
|
|
};
|
|
|
|
static int _cmd_device_usage(int fd, const 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(&devinfo[i], unit_mode);
|
|
print_device_chunks(&devinfo[i], chunkinfo, chunkcount,
|
|
unit_mode);
|
|
printf("\n");
|
|
}
|
|
|
|
out:
|
|
free(devinfo);
|
|
free(chunkinfo);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cmd_device_usage(const struct cmd_struct *cmd, int argc, char **argv)
|
|
{
|
|
unsigned unit_mode;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
|
|
|
|
clean_args_no_options(cmd, argc, argv);
|
|
|
|
if (check_argc_min(argc - optind, 1))
|
|
return 1;
|
|
|
|
for (i = optind; i < argc; i++) {
|
|
int fd;
|
|
DIR *dirstream = NULL;
|
|
|
|
if (i > 1)
|
|
printf("\n");
|
|
|
|
fd = btrfs_open_dir(argv[i], &dirstream, 1);
|
|
if (fd < 0) {
|
|
ret = 1;
|
|
break;
|
|
}
|
|
|
|
ret = _cmd_device_usage(fd, argv[i], unit_mode);
|
|
btrfs_warn_multiple_profiles(fd);
|
|
close_file_or_dir(fd, dirstream);
|
|
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
return !!ret;
|
|
}
|
|
static DEFINE_SIMPLE_COMMAND(device_usage, "usage");
|
|
|
|
static const char device_cmd_group_info[] =
|
|
"manage and query devices in the filesystem";
|
|
|
|
static const struct cmd_group device_cmd_group = {
|
|
device_cmd_group_usage, device_cmd_group_info, {
|
|
&cmd_struct_device_add,
|
|
&cmd_struct_device_delete,
|
|
&cmd_struct_device_remove,
|
|
&cmd_struct_device_scan,
|
|
&cmd_struct_device_ready,
|
|
&cmd_struct_device_stats,
|
|
&cmd_struct_device_usage,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
DEFINE_GROUP_COMMAND_TOKEN(device);
|