From: Jeff Mahoney <jeffm@xxxxxxxx>
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 <jeffm@xxxxxxxx>
---
cmds-subvolume.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 50 insertions(+), 1 deletion(-)
diff --git a/cmds-subvolume.c b/cmds-subvolume.c
index 45363a5a..d3c8e37c 100644
--- a/cmds-subvolume.c
+++ b/cmds-subvolume.c
@@ -910,6 +910,7 @@ 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.",
@@ -932,6 +933,13 @@ static int cmd_subvol_show(int argc, char **argv)
struct btrfs_util_subvolume_info subvol;
char *subvol_path = NULL;
enum btrfs_util_error err;
+ struct btrfs_qgroup_stats stats;
+ unsigned int unit_mode;
+ const char *referenced_size;
+ const char *referenced_limit_size = "-";
+ unsigned int field_width = 0;
+
+ unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
while (1) {
int c;
@@ -1101,7 +1109,48 @@ static int cmd_subvol_show(int argc, char **argv)
}
btrfs_util_destroy_subvolume_iterator(iter);
- ret = 0;
+ ret = btrfs_qgroup_query(fd, subvol.id, &stats);
+ if (ret && ret != -ENOTTY && ret != -ENODATA) {
+ fprintf(stderr,
+ "\nERROR: BTRFS_IOC_QUOTA_QUERY failed: %s\n",
+ strerror(-ret));
+ goto out;
+ }
+
+ printf("\tQuota Usage:\t\t");
+ fflush(stdout);
+ if (ret) {
+ if (ret == -ENOTTY)
+ printf("quotas not enabled\n");
+ else
+ printf("quotas not available\n");
+ goto out;
+ }
+
+ 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:
free(subvol_path);
close_file_or_dir(fd, dirstream1);
--
2.15.1
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