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btrfs-progs: Read qgroup status for qgroup verify

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Read qgroup status for its flags like QGROUP_STATUS_FLAG_RESCAN and
QGROUP_STATUS_FLAG_INCONSISTENT.

This will help to avoid false alert for case like qgroup rescan is still
running when un-mounted.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2016-04-18 10:27:09 +08:00 committed by David Sterba
parent 90a60f178d
commit 6bdf962fe3
1 changed files with 33 additions and 2 deletions
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35
qgroup-verify.c
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@ -59,6 +59,8 @@ struct qgroup_count {
static struct counts_tree { static struct counts_tree {
struct rb_root root; struct rb_root root;
unsigned int num_groups; unsigned int num_groups;
unsigned int rescan_running:1;
unsigned int qgroup_inconsist:1;
} counts = { .root = RB_ROOT }; } counts = { .root = RB_ROOT };
static struct rb_root by_bytenr = RB_ROOT; static struct rb_root by_bytenr = RB_ROOT;
@ -700,6 +702,19 @@ static void add_bytes(u64 root_objectid, u64 num_bytes, int exclusive)
} }
} }
static void read_qgroup_status(struct btrfs_path *path,
struct counts_tree *counts)
{
struct btrfs_qgroup_status_item *status_item;
u64 flags;
status_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_qgroup_status_item);
flags = btrfs_qgroup_status_flags(path->nodes[0], status_item);
counts->qgroup_inconsist = flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
counts->rescan_running = flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN;
}
static int load_quota_info(struct btrfs_fs_info *info) static int load_quota_info(struct btrfs_fs_info *info)
{ {
int ret; int ret;
@ -734,13 +749,17 @@ static int load_quota_info(struct btrfs_fs_info *info)
btrfs_item_key(leaf, &disk_key, i); btrfs_item_key(leaf, &disk_key, i);
btrfs_disk_key_to_cpu(&key, &disk_key); btrfs_disk_key_to_cpu(&key, &disk_key);
if (key.type == BTRFS_QGROUP_STATUS_KEY) {
read_qgroup_status(&path, &counts);
continue;
}
if (key.type == BTRFS_QGROUP_RELATION_KEY) if (key.type == BTRFS_QGROUP_RELATION_KEY)
printf("Ignoring qgroup relation key %llu\n", printf("Ignoring qgroup relation key %llu\n",
key.objectid); key.objectid);
/* /*
* Ignore: BTRFS_QGROUP_STATUS_KEY, * Ignore: BTRFS_QGROUP_LIMIT_KEY,
* BTRFS_QGROUP_LIMIT_KEY, BTRFS_QGROUP_RELATION_KEY * BTRFS_QGROUP_RELATION_KEY
*/ */
if (key.type != BTRFS_QGROUP_INFO_KEY) if (key.type != BTRFS_QGROUP_INFO_KEY)
continue; continue;
@ -1055,6 +1074,18 @@ int report_qgroups(int all)
struct qgroup_count *c; struct qgroup_count *c;
int ret = 0; int ret = 0;
if (counts.rescan_running) {
if (all) {
printf(
"Qgroup rescan is running, qgroup counts difference is expected\n");
} else {
printf(
"Qgroup rescan is running, ignore qgroup check\n");
return ret;
}
}
if (counts.qgroup_inconsist && !counts.rescan_running)
fprintf(stderr, "Qgroup is already inconsistent before checking\n");
node = rb_first(&counts.root); node = rb_first(&counts.root);
while (node) { while (node) {
c = rb_entry(node, struct qgroup_count, rb_node); c = rb_entry(node, struct qgroup_count, rb_node);