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xfs/217: prevent enospc failures on small test devices

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I'm running xfstests against a ramdisk, so I'm limited in size of
the test and scratch devices. While there are large enough to hold a
filesystem image with a 2GB log, the way the log changes position in
an image file as the size of the filesystem increases means that the
aggregated disk space of xfs/217 is more than enough to run a 4GB
TEST_DEV out of space and hence fail the test.

To avoid this problem, punch out the image file between every mkfs
iteration so that it only consumes the space needed by each
individual mkfs tests, not an aggregation of them all.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dave Chinner
2014-03-13 14:58:31 +11:00
committed by Dave Chinner
parent 84edd7a868
commit 4a74700a90
1 changed files with 4 additions and 0 deletions
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tests/xfs/217
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@@ -63,6 +63,10 @@ _do_mkfs()
mount -o loop -t xfs $LOOP_DEV $LOOP_MNT mount -o loop -t xfs $LOOP_DEV $LOOP_MNT
echo "test write" > $LOOP_MNT/test echo "test write" > $LOOP_MNT/test
umount -d $LOOP_MNT > /dev/null 2>&1 umount -d $LOOP_MNT > /dev/null 2>&1
# punch out the previous blocks so that we keep the amount of
# disk space the test requires down to a minimum.
$XFS_IO_PROG -f -c "unresvsp 0 16383g" $LOOP_DEV
done done
} }
# make large holey file # make large holey file