[PATCHSET v5.0 7/9] xfs: persist quota options with metadir

Darrick J. Wong
2024-10-11T00:35:05Z

Hi all,

Store the quota files in the metadata directory tree instead of the
superblock. Since we're introducing a new incompat feature flag, let's
also make the mount process bring up quotas in whatever state they were
when the filesystem was last unmounted, instead of requiring sysadmins
to remember that themselves.

If you're going to start using this code, I strongly recommend pulling
from my git trees, which are linked below.

This has been running on the djcloud for months with no problems. Enjoy!
Comments and questions are, as always, welcome.

--D

kernel git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=metadir-quotas

xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=metadir-quotas

fstests git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=metadir-quotas
---
Commits in this patchset:
* xfs: refactor xfs_qm_destroy_quotainos
* xfs: use metadir for quota inodes
* xfs: scrub quota file metapaths
* xfs: persist quota flags with metadir
---
fs/xfs/libxfs/xfs_dquot_buf.c | 190 ++++++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_fs.h | 6 +
fs/xfs/libxfs/xfs_quota_defs.h | 43 +++++++
fs/xfs/libxfs/xfs_sb.c | 1
fs/xfs/scrub/metapath.c | 76 ++++++++++++
fs/xfs/xfs_mount.c | 15 ++
fs/xfs/xfs_mount.h | 6 +
fs/xfs/xfs_qm.c | 250 +++++++++++++++++++++++++++++++---------
fs/xfs/xfs_qm_bhv.c | 18 +++
fs/xfs/xfs_quota.h | 2
fs/xfs/xfs_super.c | 22 ++++
11 files changed, 571 insertions(+), 58 deletions(-)