From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH v2 0/2] xfs: add inode btree blocks counters to the AGI header
Date: Mon, 17 Aug 2020 15:56:31 -0700 [thread overview]
Message-ID: <159770499163.3956743.11547013163186111497.stgit@magnolia> (raw)
Hi all,
Years ago, Christoph diagnosed a problem where freeing an inode on a
totally full filesystem could fail due to finobt expansion not being
able to allocate enough blocks. He solved the problem by using the
per-AG block reservation system to ensure that there are always enough
blocks for finobt expansion, but that came at the cost of having to walk
the entire finobt at mount time. This new feature solves that
performance regression by adding inode btree block counts to the AGI
header.
v2: rebase to 5.9
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=inobt-counters
xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=inobt-counters
---
fs/xfs/libxfs/xfs_ag.c | 4 ++
fs/xfs/libxfs/xfs_format.h | 22 ++++++++++-
fs/xfs/libxfs/xfs_ialloc.c | 1
fs/xfs/libxfs/xfs_ialloc_btree.c | 78 +++++++++++++++++++++++++++++++++++---
fs/xfs/scrub/agheader.c | 30 +++++++++++++++
fs/xfs/scrub/agheader_repair.c | 17 ++++++++
fs/xfs/xfs_ondisk.h | 2 -
fs/xfs/xfs_super.c | 4 ++
8 files changed, 148 insertions(+), 10 deletions(-)
next reply other threads:[~2020-08-17 22:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-17 22:56 Darrick J. Wong [this message]
2020-08-17 22:56 ` [PATCH 1/2] xfs: store inode btree block counts in AGI header Darrick J. Wong
2020-08-26 17:23 ` Brian Foster
2020-08-26 17:46 ` Darrick J. Wong
2020-08-17 22:56 ` [PATCH 2/2] xfs: enable new inode btree counters feature Darrick J. Wong
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