RepoMirrors
/
btrfs-progs
mirror of https://github.com/kdave/btrfs-progs
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

btrfs-progs: mkfs: introduce function to setup quota root and rescan 

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 <wqu@suse.com>
[ minor improvement in the fail path ]
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2020-03-18 17:21:45 -03:00 committed by David Sterba
parent 83ad692230
commit 21c0de4489
1 changed files with 79 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
mkfs/main.c
View File

@ -48,6 +48,7 @@
#include "crypto/crc32c.h"
#include "common/fsfeatures.h"
#include "common/box.h"
#include "check/qgroup-verify.h"
static int verbose = 1;
@ -831,6 +832,84 @@ 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 (%m)", ret);
return ret;
}
ret = btrfs_create_root(trans, fs_info, BTRFS_QUOTA_TREE_OBJECTID);
if (ret < 0) {
error("failed to create quota root: %d (%m)", 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 (%m)", 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 (%m)", ret);
goto fail;
}
ret = btrfs_commit_transaction(trans, fs_info->tree_root);
if (ret < 0) {
error("failed to commit current transaction: %d (%m)", 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 (%m)", ret);
return ret;
}
ret = repair_qgroups(fs_info, &qgroup_repaired, true);
if (ret < 0)
error("failed to fill qgroup info: %d (%m)", ret);
return ret;
fail:
btrfs_abort_transaction(trans, ret);
return ret;
}
int BOX_MAIN(mkfs)(int argc, char **argv)
{
char *file;