From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org, hch@lst.de, chandanbabu@kernel.org
Cc: linux-xfs@vger.kernel.org
Subject: [PATCHSET v28.2 0/5] xfs: online repair of file fork mappings
Date: Wed, 13 Dec 2023 14:51:46 -0800 [thread overview]
Message-ID: <170250783929.1399452.16224631770180304352.stgit@frogsfrogsfrogs> (raw)
Hi all,
In this series, online repair gains the ability to rebuild data and attr
fork mappings from the reverse mapping information. It is at this point
where we reintroduce the ability to reap file extents.
Repair of CoW forks is a little different -- on disk, CoW staging
extents are owned by the refcount btree and cannot be mapped back to
individual files. Hence we can only detect staging extents that don't
quite look right (missing reverse mappings, shared staging extents) and
replace them with fresh allocations.
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=repair-file-mappings-6.8
---
fs/xfs/Makefile | 2
fs/xfs/libxfs/xfs_bmap_btree.c | 121 ++++-
fs/xfs/libxfs/xfs_bmap_btree.h | 5
fs/xfs/libxfs/xfs_btree_staging.c | 11
fs/xfs/libxfs/xfs_btree_staging.h | 2
fs/xfs/libxfs/xfs_iext_tree.c | 23 +
fs/xfs/libxfs/xfs_inode_fork.c | 1
fs/xfs/libxfs/xfs_inode_fork.h | 3
fs/xfs/libxfs/xfs_refcount.c | 41 ++
fs/xfs/libxfs/xfs_refcount.h | 10
fs/xfs/scrub/bmap.c | 18 +
fs/xfs/scrub/bmap_repair.c | 858 +++++++++++++++++++++++++++++++++++++
fs/xfs/scrub/common.h | 6
fs/xfs/scrub/cow_repair.c | 614 ++++++++++++++++++++++++++
fs/xfs/scrub/fsb_bitmap.h | 37 ++
fs/xfs/scrub/off_bitmap.h | 37 ++
fs/xfs/scrub/reap.c | 153 ++++++-
fs/xfs/scrub/reap.h | 5
fs/xfs/scrub/repair.c | 50 ++
fs/xfs/scrub/repair.h | 11
fs/xfs/scrub/scrub.c | 20 -
fs/xfs/scrub/trace.h | 118 +++++
fs/xfs/xfs_trans.c | 62 +++
fs/xfs/xfs_trans.h | 4
24 files changed, 2160 insertions(+), 52 deletions(-)
create mode 100644 fs/xfs/scrub/bmap_repair.c
create mode 100644 fs/xfs/scrub/cow_repair.c
create mode 100644 fs/xfs/scrub/fsb_bitmap.h
create mode 100644 fs/xfs/scrub/off_bitmap.h
next reply other threads:[~2023-12-13 22:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-13 22:51 Darrick J. Wong [this message]
2023-12-13 22:55 ` [PATCH 1/5] xfs: reintroduce reaping of file metadata blocks to xrep_reap_extents Darrick J. Wong
2023-12-13 22:56 ` [PATCH 2/5] xfs: repair inode fork block mapping data structures Darrick J. Wong
2023-12-14 4:58 ` Christoph Hellwig
2023-12-13 22:56 ` [PATCH 3/5] xfs: refactor repair forcing tests into a repair.c helper Darrick J. Wong
2023-12-14 4:59 ` Christoph Hellwig
2023-12-13 22:56 ` [PATCH 4/5] xfs: create a ranged query function for refcount btrees Darrick J. Wong
2023-12-13 22:56 ` [PATCH 5/5] xfs: repair problems in CoW forks Darrick J. Wong
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