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Groups > linux.kernel > #1654224

[xfstests PATCH v3 2/5] ext4: allow ext4 to use $SCRATCH_LOGDEV

From Jeff Layton <jlayton@redhat.com>
Newsgroups linux.kernel
Subject [xfstests PATCH v3 2/5] ext4: allow ext4 to use $SCRATCH_LOGDEV
Date 2017-05-31 15:20 +0200
Message-ID <tNbHA-5dQ-13@gated-at.bofh.it> (permalink)
References <tNbxT-5ao-13@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The writeback error handling test requires that you put the journal on a
separate device. This allows us to use dmerror to simulate data
writeback failure, without affecting the journal.

xfs already has infrastructure for this (a'la $SCRATCH_LOGDEV), so wire
up the ext4 code so that it can do the same thing when _scratch_mkfs is
called.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 common/rc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/rc b/common/rc
index 743df427c047..391d36f373cd 100644
--- a/common/rc
+++ b/common/rc
@@ -676,6 +676,9 @@ _scratch_mkfs_ext4()
 	local tmp=`mktemp`
 	local mkfs_status
 
+	[ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ] && \
+	    $mkfs_cmd -O journal_dev $SCRATCH_LOGDEV && \
+	    mkfs_cmd="$mkfs_cmd -J device=$SCRATCH_LOGDEV"
 
 	_scratch_do_mkfs "$mkfs_cmd" "$mkfs_filter" $* 2>$tmp.mkfserr 1>$tmp.mkfsstd
 	mkfs_status=$?
-- 
2.9.4

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[xfstests PATCH v3 0/5] add a test for reporting writeback errors across all fds on fsync Jeff Layton <jlayton@redhat.com> - 2017-05-31 15:10 +0200
  [xfstests PATCH v3 2/5] ext4: allow ext4 to use $SCRATCH_LOGDEV Jeff Layton <jlayton@redhat.com> - 2017-05-31 15:20 +0200
    Re: [xfstests PATCH v3 2/5] ext4: allow ext4 to use $SCRATCH_LOGDEV Eryu Guan <eguan@redhat.com> - 2017-06-06 11:10 +0200

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