linux-kernel - [PATCH 0/5] md: fix/prevent dm-raid regressions

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Date: Sat, 20 Jan 2024 18:37:29 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: mpatocka@...hat.com,
	dm-devel@...ts.linux.dev,
	msnitzer@...hat.com,
	heinzm@...hat.com,
	song@...nel.org,
	yukuai3@...wei.com
Cc: linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	yukuai1@...weicloud.com,
	yi.zhang@...wei.com,
	yangerkun@...wei.com
Subject: [PATCH 0/5] md: fix/prevent dm-raid regressions

From: Yu Kuai <yukuai3@...wei.com>

There are some problems that we fixed in md/raid, and some apis is changed.
However, dm-raid rely the old apis(noted that old apis is problematic in
corner cases), and now there are regressions in lvm2 testsuite.

This patchset fix some regressions(patch 1-3), and revert changes to
prevent regressions(patch 4,5). Noted that the problems in patch 4,5 is
not clear yet, and I'm not able to locate the root cause ASAP, hence I
decide to revert changes to prevent regressions first.

Yu Kuai (5):
  md: don't ignore suspended array in md_check_recovery()
  md: don't ignore read-only array in md_check_recovery()
  md: make sure md_do_sync() will set MD_RECOVERY_DONE
  md: revert commit fa2bbff7b0b4 ("md: synchronize flush io with array
    reconfiguration") for dm-raid
  md: use md_reap_sync_thread() directly for dm-raid

 drivers/md/md.c | 58 ++++++++++++++++++++++++++++++-------------------
 1 file changed, 36 insertions(+), 22 deletions(-)

-- 
2.39.2