To better exercise the data path code of realtime subvolumes, we
will set rtinherit=1 during mkfs calls. For tests which this is not
desired we introduce a _require_no_rtinherit function to opt out of
this behavior.
Signed-off-by: Richard Wareing <rwareing@fb.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Currently we just have this test run on a whitelist of filesystems,
but it would be best to be able to run it on all of them. The
problem is that a lot of filesystems basically shut down once they
hit metadata errors.
Allow the fsync-err testcase to operate in two different modes. One
mode just does basic testing to ensure that we get an error back on
all fd's when we fsync. The other does a more thorough test to
ensure that we get back 0 on subsequent fsyncs when there hasn't
been any write activity.
For now, we just opt-in to the more thorough testing on certain
filesystems: xfs, ext3 and ext4 on the generic test. All other
filesystems will run in simple mode.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
I'm working on a set of kernel patches to change how writeback errors
are handled and reported in the kernel. Instead of reporting a
writeback error to only the first fsync caller on the file, it has
the the kernel report them once on every file description that was
open at the time of the error.
This patch adds a test for this new behavior. Basically, open many fds
to the same file, turn on dm_error, write to each of the fds, and then
fsync them all to ensure that they all get an error back.
To do that, I'm adding a new tools/dmerror script that the C program
can use to load the error table from the script. It's also suitable for
setting up, frobbing and tearing down a dmerror device for by-hand testing.
For now, only ext2/3/4 and xfs are whitelisted on this test, since those
filesystems are included in the initial patchset. We can add to that as
we convert filesystems, and eventually make it a more general test.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Richard Wareing
Jeff Layton