diff options
Diffstat (limited to 'cmds-device.c')
-rw-r--r-- | cmds-device.c | 94 |
1 files changed, 55 insertions, 39 deletions
diff --git a/cmds-device.c b/cmds-device.c index a939c56f..de62cd42 100644 --- a/cmds-device.c +++ b/cmds-device.c @@ -283,7 +283,7 @@ static int cmd_device_scan(int argc, char **argv) if (all || argc - optind == 0) { printf("Scanning for Btrfs filesystems\n"); - ret = btrfs_scan_lblkid(); + ret = btrfs_scan_devices(); error_on(ret, "error %d while scanning", ret); ret = btrfs_register_all_devices(); error_on(ret, "there are %d errors while registering devices", ret); @@ -372,10 +372,13 @@ out: } 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 }; @@ -387,13 +390,26 @@ static int cmd_device_stats(int argc, char **argv) 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[] = { + {"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; @@ -414,7 +430,7 @@ static int cmd_device_stats(int argc, char **argv) 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; @@ -427,24 +443,37 @@ static int cmd_device_stats(int argc, char **argv) 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", + error("device stats ioctl failed on %s: %s", path, strerror(errno)); - err = 1; + 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) { @@ -457,31 +486,18 @@ static int cmd_device_stats(int argc, char **argv) "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); } |