Introduce a new function, setup_quota_root(), which will create quota
root, and do an offline rescan to ensure all quota accounting numbers
are correct.
Signed-off-by: Qu Wenruo <w...@suse.com>
---
mkfs/main.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/mkfs/main.c b/mkfs/main.c
index 0f0dabd36d14..a846540b37ff 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -46,6 +46,7 @@
#include "help.h"
#include "mkfs/common.h"
#include "fsfeatures.h"
+#include "qgroup-verify.h"
int path_cat_out(char *out, const char *p1, const char *p2);
@@ -1438,6 +1439,91 @@ static int insert_qgroup_items(struct btrfs_trans_handle
*trans,
return ret;
}
+static int setup_quota_root(struct btrfs_fs_info *fs_info)
+{
+ struct btrfs_trans_handle *trans;
+ struct btrfs_qgroup_status_item *qsi;
+ struct btrfs_root *quota_root;
+ struct btrfs_path path;
+ struct btrfs_key key;
+ int qgroup_repaired = 0;
+ int ret;
+
+ /* One to modify tree root, one for quota root */
+ trans = btrfs_start_transaction(fs_info->tree_root, 2);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ error("failed to start transaction: %d (%s)",
+ ret, strerror(-ret));
+ return ret;
+ }
+ ret = btrfs_create_root(trans, fs_info, BTRFS_QUOTA_TREE_OBJECTID);
+ if (ret < 0) {
+ error("failed to create quota root: %d (%s)",
+ ret, strerror(-ret));
+ goto fail;
+ }
+ quota_root = fs_info->quota_root;
+
+ key.objectid = 0;
+ key.type = BTRFS_QGROUP_STATUS_KEY;
+ key.offset = 0;
+
+ btrfs_init_path(&path);
+ ret = btrfs_insert_empty_item(trans, quota_root, &path, &key,
+ sizeof(*qsi));
+ if (ret < 0) {
+ error("failed to insert qgroup status item: %d (%s)",
+ ret, strerror(-ret));
+ goto fail;
+ }
+
+ qsi = btrfs_item_ptr(path.nodes[0], path.slots[0],
+ struct btrfs_qgroup_status_item);
+ btrfs_set_qgroup_status_generation(path.nodes[0], qsi, 0);
+ btrfs_set_qgroup_status_rescan(path.nodes[0], qsi, 0);
+
+ /* Mark current status info inconsistent, and fix it later */
+ btrfs_set_qgroup_status_flags(path.nodes[0], qsi,
+ BTRFS_QGROUP_STATUS_FLAG_ON |
+ BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT);
+ btrfs_release_path(&path);
+
+ /* Currently mkfs will only create one subvolume */
+ ret = insert_qgroup_items(trans, fs_info, BTRFS_FS_TREE_OBJECTID);
+ if (ret < 0) {
+ error("failed to insert qgroup items: %d (%s)",
+ ret, strerror(-ret));
+ goto fail;
+ }
+
+ ret = btrfs_commit_transaction(trans, fs_info->tree_root);
+ if (ret < 0) {
+ error("failed to commit current transaction: %d (%s)",
+ ret, strerror(-ret));
+ return ret;
+ }
+
+ /*
+ * Qgroup is setup but with wrong info, use qgroup-verify
+ * infrastructure to repair them.
+ * (Just acts as offline rescan)
+ */
+ ret = qgroup_verify_all(fs_info);
+ if (ret < 0) {
+ error("qgroup rescan failed: %d (%s)", ret, strerror(-ret));
+ return ret;
+ }
+ ret = repair_qgroups(fs_info, &qgroup_repaired, true);
+ if (ret < 0)
+ error("failed to fill qgroup info: %d (%s)", ret,
+ strerror(-ret));
+ return ret;
+fail:
+ btrfs_commit_transaction(trans, fs_info->tree_root);
+ return ret;
+}
+
int main(int argc, char **argv)
{
char *file;
--
2.15.0
--
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