From: Jeff Mahoney <je...@suse.com> This patch reports on the first-level qgroup, if any, associated with a particular subvolume. It displays the usage and limit, subject to the usual unit parameters.
Signed-off-by: Jeff Mahoney <je...@suse.com> --- cmds-subvolume.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/cmds-subvolume.c b/cmds-subvolume.c index 8a473f7a..29d0e0e5 100644 --- a/cmds-subvolume.c +++ b/cmds-subvolume.c @@ -972,6 +972,7 @@ static const char * const cmd_subvol_show_usage[] = { "Show more information about the subvolume", "-r|--rootid rootid of the subvolume", "-u|--uuid uuid of the subvolume", + HELPINFO_UNITS_SHORT_LONG, "", "If no option is specified, <subvol-path> will be shown, otherwise", "the rootid or uuid are resolved relative to the <mnt> path.", @@ -993,6 +994,13 @@ static int cmd_subvol_show(int argc, char **argv) int by_uuid = 0; u64 rootid_arg; u8 uuid_arg[BTRFS_UUID_SIZE]; + struct btrfs_qgroup_stats stats; + unsigned int unit_mode; + const char *referenced_size; + const char *referenced_limit_size = "-"; + unsigned field_width = 0; + + unit_mode = get_unit_mode_from_arg(&argc, argv, 1); while (1) { int c; @@ -1112,6 +1120,44 @@ static int cmd_subvol_show(int argc, char **argv) btrfs_list_subvols_print(fd, filter_set, NULL, BTRFS_LIST_LAYOUT_RAW, 1, raw_prefix); + ret = btrfs_qgroup_query(fd, get_ri.root_id, &stats); + if (ret < 0) { + if (ret == -ENODATA) + printf("Quotas must be enabled for per-subvolume usage\n"); + else if (ret != -ENOTTY) + fprintf(stderr, + "\nERROR: BTRFS_IOC_QUOTA_QUERY failed: %s\n", + strerror(errno)); + goto out; + } + + printf("\tQuota Usage:\t\t"); + fflush(stdout); + + referenced_size = pretty_size_mode(stats.info.referenced, unit_mode); + if (stats.limit.max_referenced) + referenced_limit_size = pretty_size_mode( + stats.limit.max_referenced, + unit_mode); + field_width = max(strlen(referenced_size), + strlen(referenced_limit_size)); + + printf("%-*s referenced, %s exclusive\n ", field_width, + referenced_size, + pretty_size_mode(stats.info.exclusive, unit_mode)); + + printf("\tQuota Limits:\t\t"); + if (stats.limit.max_referenced || stats.limit.max_exclusive) { + const char *excl = "-"; + + if (stats.limit.max_exclusive) + excl = pretty_size_mode(stats.limit.max_exclusive, + unit_mode); + printf("%-*s referenced, %s exclusive\n", field_width, + referenced_limit_size, excl); + } else + printf("None\n"); + out: /* clean up */ free(get_ri.path); -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html