forked from Mirrors/btrfs-progs
Btrfs-progs: introduces '-p' option to print the ID of the parent qgroups
This patch introduces '-p' option to print the ID of the parent qgroups. You may use it like: btrfs qgroup show -p <path> For Example: qgroupid(2/0) / \ / \ / \ qgroupid(1/0) qgroupid(1/1) \ / \ / qgroupid(0/1) If we use the command: btrfs qgroup show -p <path> The result will output 0/1 -- -- 1/0,1/1 1/0 -- -- 2/0 1/1 -- -- 2/0 2/0 -- -- -- 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>master
parent
1e174d2621
commit
04e271786f
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@ -202,22 +202,39 @@ static int cmd_qgroup_destroy(int argc, char **argv)
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}
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static const char * const cmd_qgroup_show_usage[] = {
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"btrfs qgroup show <path>",
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"btrfs qgroup show -p <path>",
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"Show all subvolume quota groups.",
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"-p print parent qgroup id",
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NULL
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};
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static int cmd_qgroup_show(int argc, char **argv)
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{
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char *path;
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int ret = 0;
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int fd;
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int e;
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char *path = argv[1];
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DIR *dirstream = NULL;
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int c;
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if (check_argc_exact(argc, 2))
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optind = 1;
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while (1) {
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c = getopt(argc, argv, "p");
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if (c < 0)
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break;
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switch (c) {
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case 'p':
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btrfs_qgroup_setup_print_column(
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BTRFS_QGROUP_PARENT);
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break;
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default:
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usage(cmd_qgroup_show_usage);
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}
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}
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if (check_argc_exact(argc - optind, 1))
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usage(cmd_qgroup_show_usage);
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path = argv[optind];
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fd = open_file_or_dir(path, &dirstream);
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if (fd < 0) {
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fprintf(stderr, "ERROR: can't access '%s'\n", path);
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22
qgroup.c
22
qgroup.c
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@ -87,6 +87,11 @@ struct {
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.column_name = "Excl",
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.need_print = 1,
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},
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{
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.name = "parent",
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.column_name = "Parent",
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.need_print = 0,
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},
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{
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.name = NULL,
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.column_name = NULL,
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@ -108,6 +113,20 @@ void btrfs_qgroup_setup_print_column(enum btrfs_qgroup_column_enum column)
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btrfs_qgroup_columns[i].need_print = 1;
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}
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static void print_parent_column(struct btrfs_qgroup *qgroup)
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{
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struct btrfs_qgroup_list *list = NULL;
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list_for_each_entry(list, &qgroup->qgroups, next_qgroup) {
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printf("%llu/%llu", (list->qgroup)->qgroupid >> 48,
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((1ll << 48) - 1) & (list->qgroup)->qgroupid);
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if (!list_is_last(&list->next_qgroup, &qgroup->qgroups))
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printf(",");
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}
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if (list_empty(&qgroup->qgroups))
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printf("---");
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}
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static void print_qgroup_column(struct btrfs_qgroup *qgroup,
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enum btrfs_qgroup_column_enum column)
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{
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@ -125,6 +144,9 @@ static void print_qgroup_column(struct btrfs_qgroup *qgroup,
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case BTRFS_QGROUP_EXCL:
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printf("%lld", qgroup->excl);
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break;
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case BTRFS_QGROUP_PARENT:
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print_parent_column(qgroup);
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break;
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default:
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break;
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}
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