#include "cmds-fi-usage.h"
#include "commands.h"
+#include "help.h"
+#include "mkfs/common.h"
static const char * const device_cmd_group_usage[] = {
"btrfs device <command> [<args>]",
path = canonicalize_path(argv[i]);
if (!path) {
- error("could not canonicalize pathname '%s': %s",
- argv[i], strerror(errno));
+ error("could not canonicalize pathname '%s': %m",
+ argv[i]);
ret++;
goto error_out;
}
strncpy_null(ioctl_args.name, path);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
if (res < 0) {
- error("error adding device '%s': %s",
- path, strerror(errno));
+ error("error adding device '%s': %m", path);
ret++;
}
free(path);
*/
if (res < 0 && (errno == ENOTTY || errno == EOPNOTSUPP)) {
if (is_devid) {
- error("device delete by id failed: %s",
- strerror(errno));
+ error("device delete by id failed: %m");
ret++;
continue;
}
return !!ret;
}
+#define COMMON_USAGE_REMOVE_DELETE \
+ "If 'missing' is specified for <device>, the first device that is", \
+ "described by the filesystem metadata, but not present at the mount", \
+ "time will be removed. (only in degraded mode)"
+
static const char * const cmd_device_remove_usage[] = {
"btrfs device remove <device>|<devid> [<device>|<devid>...] <path>",
"Remove a device from a filesystem",
+ "",
+ COMMON_USAGE_REMOVE_DELETE,
NULL
};
static const char * const cmd_device_delete_usage[] = {
"btrfs device delete <device>|<devid> [<device>|<devid>...] <path>",
- "Remove a device from a filesystem",
+ "Remove a device from a filesystem (alias of \"btrfs device remove\")",
+ "",
+ COMMON_USAGE_REMOVE_DELETE,
NULL
};
}
path = canonicalize_path(argv[i]);
if (!path) {
- error("could not canonicalize path '%s': %s",
- argv[i], strerror(errno));
+ error("could not canonicalize path '%s': %m", argv[i]);
ret = 1;
goto out;
}
path = canonicalize_path(argv[optind]);
if (!path) {
- error("could not canonicalize pathname '%s': %s",
- argv[optind], strerror(errno));
+ error("could not canonicalize pathname '%s': %m",
+ argv[optind]);
ret = 1;
goto out;
}
strncpy_null(args.name, path);
ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
if (ret < 0) {
- error("unable to determine if device '%s' is ready for mount: %s",
- path, strerror(errno));
+ error("unable to determine if device '%s' is ready for mount: %m",
+ path);
ret = 1;
}
}
static const char * const cmd_device_stats_usage[] = {
- "btrfs device stats [-z] <path>|<device>",
- "Show current device IO stats.",
+ "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.",
"",
- "-z show current stats and reset values to zero",
+ "-c|--check return non-zero if any stat counter is not zero",
+ "-z|--reset show current stats and reset values to zero",
NULL
};
int ret;
int fdmnt;
int i;
- int c;
int err = 0;
+ int check = 0;
__u64 flags = 0;
DIR *dirstream = NULL;
- while ((c = getopt(argc, argv, "z")) != -1) {
+ 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;
ret = get_fs_info(dev_path, &fi_args, &di_args);
if (ret) {
- error("getting dev info for devstats failed: %s",
+ error("getting device info for %s failed: %s", dev_path,
strerror(-ret));
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];
+ char path[BTRFS_DEVICE_PATH_NAME_MAX + 1];
- strncpy((char *)path, (char *)di_args[i].path,
+ strncpy(path, (char *)di_args[i].path,
BTRFS_DEVICE_PATH_NAME_MAX);
- path[BTRFS_DEVICE_PATH_NAME_MAX] = '\0';
+ 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("DEV_STATS ioctl failed on %s: %s",
- path, strerror(errno));
- err = 1;
+ error("device stats ioctl failed on %s: %m",
+ path);
+ err |= 1;
} else {
char *canonical_path;
-
- canonical_path = canonicalize_path((char *)path);
+ 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 },
+ };
+
+ canonical_path = canonicalize_path(path);
/* No path when device is missing. */
if (!canonical_path) {
"devid:%llu", args.devid);
}
- 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]);
+ 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;
+ 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;
+ }
free(canonical_path);
}
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,
+ print_device_sizes(&devinfo[i], unit_mode);
+ print_device_chunks(&devinfo[i], chunkinfo, chunkcount,
unit_mode);
printf("\n");
}
projects / platform / upstream / btrfs-progs.git / blobdiff