/dev/urandom is incompressible and, /dev/zero is highly compressible,
so both are less effective in testing the compress code logic in btrfs.
This patch introduces a text data generator
cat /dev/urandom | od
to populate the files where /dev/urandom is currently being used in the
btrfs test cases.
And updates the _populate_fs() with a new option -c, so to instruct
to use the compressible data to populate the file(s).
[eguan: add comments, fix indention]
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
The check script requires that it be run as root, so adding
individualized checks for this in each teat is not needed.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Replace every explicit mount/umount of scratch or test devices with
helper functions. This allows the next patch to add in hooks to these
functions in order to set up & tear down overlayfs on every mount/umount
(also adds _test_unmount(), which didn't exist prior)
[Eryu Guan rebased the patch agains latest master and replaced more
mount/umount with helpers]
Signed-off-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This test doesn't need the scratch dev pool and it also doesn't call
_require_scratch_dev_pool, so just kick out the scratch dev pool part of the
test. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
Since common/config is executed twice, if SCRATCH_DEV_POOL is configured
via the environment, the current code removes the first device entry twice
which means that you lose the second device for the test.
The fix is to not remove anything from SCRATCH_DEV_POOL anymore.
That used to be done (I can only guess) to allow to pass the
SCRATCH_DEV_POOL as an argument to _scratch_mkfs. Since _scratch_mkfs adds
the SCRATCH_DEV, the pool mustn't contain that device anymore.
A new function _scratch_pool_mkfs is introduced that does the expected
thing.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Reviewed-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
Current numbering is inheried from the single testsuite series. There
are only 6 btrfs-specific tests and it makes more sense to start adding
new ones at a more natural place than 300-something. There's no overlap
with the old and new numbers and I hope there' will be no confusion when
referencing them.
Signed-off-by: David Sterba <dsterba@suse.cz>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
Dave Chinner
Anand Jain
Theodore Ts'o
Eric Sandeen
Josef Bacik
Stefan Behrens
David Sterba