xfstests: allow override of XFS_IOC_DIOINFO

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This change allows xfstests runs to simulate apps
which don't bother to call XFS_IOC_DIOINFO, and simply
issue DIO in sizes and alignments of its own choosing.

So i.e.:

# export XFS_DIO_MIN=512

prior to an xfstests run, and these test binaries
should issue 512-aligned DIOs instead of whatever
XFS_IOC_DIOINFO says (i.e. instead of maybe 4k).

(This is in preparation for allowing 512 IOs on
"advanced format" 512/4k disks, when xfs has an
internal 4k sector size).

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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This commit is contained in:

Eric Sandeen

2014-01-20 13:28:38 +11:00

committed by Dave Chinner

parent 94d3f77819

commit 6571cea7eb

5 changed files with 39 additions and 0 deletions

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tests/btrfs/022

Regular → Executable