diff options
author | Wang Shilong <wangsl-fnst@cn.fujitsu.com> | 2013-10-07 15:21:39 +0800 |
---|---|---|
committer | Chris Mason <chris.mason@fusionio.com> | 2013-10-16 08:23:12 -0400 |
commit | 14b6c32037b19a860132e4e37c09d2d9705ee500 (patch) | |
tree | b97d07a404b645abe355a72cef0d412f0039cca8 /qgroup.c | |
parent | 04e271786fa45b9d618e508571961921429fe4a5 (diff) |
Btrfs-progs: introduces '-c' option to print the ID of the child qgroups
This patch introduces '-c' option to print the ID of the child qgroups.
You may use it like:
btrfs qgroup show -c <path>
For Example:
qgroupid(2/0)
/ \
/ \
/ \
qgroupid(1/0) qgroupid(1/1)
\ /
\ /
qgroupid(0/1)
If we use the command:
btrfs qgroup show -c <path>
The result will output
0/1 -- -- --
1/0 -- -- 0/1
1/1 -- -- 0/1
2/0 -- -- 1/0,1/1
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'qgroup.c')
-rw-r--r-- | qgroup.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -93,6 +93,11 @@ struct { .need_print = 0, }, { + .name = "child", + .column_name = "Child", + .need_print = 0, + }, + { .name = NULL, .column_name = NULL, .need_print = 0, @@ -127,6 +132,20 @@ static void print_parent_column(struct btrfs_qgroup *qgroup) printf("---"); } +static void print_child_column(struct btrfs_qgroup *qgroup) +{ + struct btrfs_qgroup_list *list = NULL; + + list_for_each_entry(list, &qgroup->members, next_member) { + printf("%llu/%llu", (list->member)->qgroupid >> 48, + ((1ll << 48) - 1) & (list->member)->qgroupid); + if (!list_is_last(&list->next_member, &qgroup->members)) + printf(","); + } + if (list_empty(&qgroup->members)) + printf("---"); +} + static void print_qgroup_column(struct btrfs_qgroup *qgroup, enum btrfs_qgroup_column_enum column) { @@ -147,6 +166,9 @@ static void print_qgroup_column(struct btrfs_qgroup *qgroup, case BTRFS_QGROUP_PARENT: print_parent_column(qgroup); break; + case BTRFS_QGROUP_CHILD: + print_child_column(qgroup); + break; default: break; } |