I had volunteered at the last LSF/MM to help with the stable work for XFS. To help with this, as part of this year's SUSE Hackweek, I've first generalized my own set of scripts to help track a baseline of results from fstests [0], and extended it to be able to easily ramp up with fstests on different distributions, and I've also created a respective baseline of results against these distributions as a further example of how these scripts and wrapper framework can be used [1]. The distributions currently supported are: * Debian testing * OpenSUSE Leap 15.0 * Fedora 28 The stable work starts with creating a baseline for v4.17.3. The results are visible as a result of expunge files which categorize the failures for the different sections tested. Other than careful manual inspection of each stable candidate patch, one of the goals will also be to ensure such stable patches do not regress the baseline. Work is currently underway to review the first set of stable candidate patches for v4.17.3, if they both pass review and do not regress the established baseline, I'll proceed to post the patches for further evaluation from the community. Note that while I used this for XFS, it should be easy to add support for other filesystems, should folks wish to do something similar for their filesystems. The current XFS sections being tested are as follows, please let me know if we should consider extending this further: # Matches what we expect to be default on the latests xfsprogs [xfs] MKFS_OPTIONS='-f -m crc=1,reflink=0,rmapbt=0, -i sparse=0' USE_EXTERNAL=no FSTYP=xfs [xfs_reflink] MKFS_OPTIONS='-f -m reflink=1,rmapbt=1, -i sparse=1,' USE_EXTERNAL=no FSTYP=xfs [xfs_reflink_1024] MKFS_OPTIONS='-f -m reflink=1,rmapbt=1, -i sparse=1, -b size=1024,' USE_EXTERNAL=no FSTYP=xfs # For older kernels when we didn't have crc [xfs_nocrc] MKFS_OPTIONS='-f -m crc=0,reflink=0,rmapbt=0, -i sparse=0,' USE_EXTERNAL=no FSTYP=xfs [xfs_nocrc_512] MKFS_OPTIONS='-f -m crc=0,reflink=0,rmapbt=0, -i sparse=0, -b size=512,' USE_EXTERNAL=no FSTYP=xfs # Latest defaults with an external log [xfs_logdev] MKFS_OPTIONS="-f -m crc=1,reflink=0,rmapbt=0, -i sparse=0 -lsize=1g" SCRATCH_LOGDEV=/dev/loop15 USE_EXTERNAL=yes FSTYP=xfs # Requires CONFIG_XFS_RT which most distros disable now [xfs_realtimedev] MKFS_OPTIONS="-f -lsize=1g" SCRATCH_LOGDEV=/dev/loop15 SCRATCH_RTDEV=/dev/loop14 USE_EXTERNAL=yes FSTYP=xfs There are notes about possible issue with tests and diffs when using an external log on the respective expunge files for the section, so section xfs_logdev, and xfs_realtimedev likely have a slew of failures due to unexpected test results. Also worth noting is that out of the distributions tested only Debian currently still enables CONFIG_XFS_RT, so it may be worth for Debian to consider disabling it as well. Its really unclear exactly who cares about this still and who's really testing CONFIG_XFS_RT anymore. To be clear the results are not in yet for the v4.17.3 work, this is just the framework which I'll use to next address that. Expect more updates on that later once the results and final review is in. I'm also pushing tests now also to track the baseline for vanilla linux and linux-net. If there are any questions please let me know. [0] git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git [1] https://gitlab.com/mcgrof/oscheck Luis
