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btrfs-progs: subvol show: reformat qgroup information

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Print qgroup information one row per value and don't print the
information at all if quotas are not enabled. Sample output:

subv1
        Name:                   subv1
        UUID:                   58aa0df4-6bde-3e4e-b9f6-631d9c23578f
        Parent UUID:            -
        Received UUID:          -
        Creation time:          2019-06-19 12:34:56 +0200
        Subvolume ID:           258
        Generation:             9
        Gen at creation:        9
        Parent ID:              5
        Top level ID:           5
        Flags:                  -
        Snapshot(s):
        Quota group:            0/258
          Limit referenced:     -
          Limit exclusive:      1.00GiB
          Usage referenced:     16.00KiB
          Usage exclusive:      16.00KiB

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-06-19 20:36:29 +02:00
parent 1b42c7b50b
commit ceacaa112e
1 changed files with 12 additions and 28 deletions
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40
cmds-subvolume.c
View File

@ -956,9 +956,6 @@ static int cmd_subvol_show(const struct cmd_struct *cmd, int argc, char **argv)
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);
@ -1139,8 +1136,6 @@ static int cmd_subvol_show(const struct cmd_struct *cmd, int argc, char **argv)
goto out;
}
printf("\tQuota Usage:\t\t");
fflush(stdout);
if (ret) {
if (ret == -ENOTTY)
printf("quotas not enabled\n");
@ -1148,30 +1143,19 @@ static int cmd_subvol_show(const struct cmd_struct *cmd, int argc, char **argv)
printf("quotas not available\n");
goto out;
}
printf("\tQuota group:\t\t0/%" PRIu64 "\n", subvol.id);
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");
printf("\t Limit referenced:\t%s\n",
stats.limit.max_referenced == 0 ? "-" :
pretty_size_mode(stats.limit.max_referenced, unit_mode));
printf("\t Limit exclusive:\t%s\n",
stats.limit.max_exclusive == 0 ? "-" :
pretty_size_mode(stats.limit.max_exclusive, unit_mode));
printf("\t Usage referenced:\t%s\n",
pretty_size_mode(stats.info.referenced, unit_mode));
printf("\t Usage exclusive:\t%s\n",
pretty_size_mode(stats.info.exclusive, unit_mode));
out:
free(subvol_path);