[PATCHSET v26.0 0/6] xfs: prepare repair for bulk loading

Darrick J. Wong
2023-07-27T22:18:51Z

Hi all,

Before we start merging the online repair functions, let's improve the
bulk loading code a bit. First, we need to fix a misinteraction between
the AIL and the btree bulkloader wherein the delwri at the end of the
bulk load fails to queue a buffer for writeback if it happens to be on
the AIL list.

Second, we introduce EFIs in the btree bulkloader block allocator to to
guarantee that staging blocks are freed if the filesystem goes down
before committing the new btree.

Third, we change the bulkloader itself to copy multiple records into a
block if possible, and add some debugging knobs so that developers can
control the slack factors, just like they can do for xfs_repair.

If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.

This is an extraordinary way to destroy everything. 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-prep-for-bulk-loading

xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=repair-prep-for-bulk-loading
---
fs/xfs/Makefile | 1
fs/xfs/libxfs/xfs_btree.c | 2
fs/xfs/libxfs/xfs_btree.h | 3
fs/xfs/libxfs/xfs_btree_staging.c | 67 +++-
fs/xfs/libxfs/xfs_btree_staging.h | 32 +-
fs/xfs/scrub/agheader_repair.c | 1
fs/xfs/scrub/common.c | 1
fs/xfs/scrub/newbt.c | 629 +++++++++++++++++++++++++++++++++++++
fs/xfs/scrub/newbt.h | 66 ++++
fs/xfs/scrub/repair.c | 10 +
fs/xfs/scrub/repair.h | 1
fs/xfs/scrub/scrub.c | 2
fs/xfs/scrub/trace.h | 37 ++
fs/xfs/xfs_buf.c | 47 +++
fs/xfs/xfs_buf.h | 1
fs/xfs/xfs_globals.c | 12 +
fs/xfs/xfs_sysctl.h | 2
fs/xfs/xfs_sysfs.c | 54 +++
18 files changed, 931 insertions(+), 37 deletions(-)
create mode 100644 fs/xfs/scrub/newbt.c
create mode 100644 fs/xfs/scrub/newbt.h