xfs: validate sb_logsunit is a multiple of the fs blocksize

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Make sure the log stripe unit is sane before proceeding with mounting.
AFAICT this means that logsunit has to be 0, 1, or a multiple of the fs
block size.  Found this by setting the LSB of logsunit in xfs/350 and
watching the system crash as soon as we try to write to the log.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

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Darrick J. Wong 2017-10-25 16:59:43 -07:00

parent f1b92bbc23

commit 9c92ee208b

1 changed files with 13 additions and 1 deletions

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fs/xfs/xfs_log.c

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