On Sun, Feb 12, 2017 at 10:43 PM, Amir Goldstein <amir73il@xxxxxxxxx> wrote: > Hi Eryu and all, > > The reason I started this work was to help catch overlayfs bugs > related to leaking objects in underlying (base) fs. > > As a by-product, following Eryu's comments on v2, configuring > xfstest to run overlay tests over any file system is now easier then ever. > > With this change, all you have to do to run overlay tests if you > already have a local.config setup to test a local file system is: > ./check -overlay > > It uses existing local.config that was setup to run tests on > the base fs (e.g. xfs) and you can run './check' and './check -overlay' > without re-formatting the test partitions and without changing the > config file. > > The legacy overlayfs configuration, where TEST_DEV is a directory > still works, but it should be deprecated. > > I tested ./check -overlay -g quick with both legacy overlay configuration > and the new base fs configuration. > > Until now, overlay test configuration was not documented at all. > I updated README per Eryu's request and tried to keep the documentation > short and simple. > > Also updated README.config-sections with an easy example how to > interleave overlay tests on every base fs in the multi section config > file. > > I honestly think that it is important for file system developers these days, > to test changes to their file systems with -overlay, to verify no breakage > is caused when their file systems are used as base fs to overlay containers. > I dare to say, that it is probably more important than testing 1k block size, > which most of the maintainers do test with regularly. > > Some of the bugs I fixed in patches 1-3 indicate that people have not > been 'stress testing' the xfstest config file and all of its gloious > configurable options. I tried to run with some basic configurations > to check my changes, but I doubt that I have covered more then a small > fraction of the configurations that people are using. > > I would very much appreciate if anyone could test these changes with their > own set of configuration, with or without adding overlay tests into the mix. > You can get the branch for testing from my github tree [1]. > Extending my request to linux-fsdevel: any of you developers using either multi section config files or more that the most standard config options, please verify that these changes don't break anything on your setup. > Thanks, > Amir. > > [1] https://github.com/amir73il/xfstests/tree/ovl_base_fs > > v3: > - Mount cycle base test fs > - Fix bugs in non overlay specific sanity checks > - Run -overlay test with existing config file of base fs > - Run overlay tests per base fs by adding overlay config sections > > v2: > - Test and scratch base dirs each have thier own base fs > - Support mount cycles of base fs for scratch tests > > v1: > - Both test and scratch base dirs on a single base fs > > > Amir Goldstein (9): > fstests: sanity check that test partitions are not mounted elsewhere > fstests: use _test_mount() consistently > fstests: canonicalize mount points on every config section > overlay: rename OVERLAY_LOWER/UPPER/WORK_DIR > overlay: allow SCRATCH_DEV to be the base fs mount point > overlay: configure TEST/SCRATCH vars to base fs > overlay: use OVL_BASE_SCRATCH_MNT instead of SCRATCH_DEV > overlay: fix test and scratch filters for overlay base fs > overlay: mount/unmount base fs before/after running tests > > README | 16 +++-- > README.config-sections | 6 ++ > check | 24 +++---- > common/config | 121 +++++++++++++++++++++++++++----- > common/filter | 7 +- > common/rc | 184 +++++++++++++++++++++++++++++++++++-------------- > tests/overlay/001 | 7 +- > tests/overlay/002 | 2 +- > tests/overlay/003 | 5 +- > tests/overlay/004 | 7 +- > tests/overlay/005 | 30 ++++---- > tests/overlay/006 | 10 +-- > tests/overlay/008 | 8 +-- > tests/overlay/009 | 2 +- > tests/overlay/010 | 10 +-- > tests/overlay/011 | 6 +- > tests/overlay/012 | 4 +- > tests/overlay/013 | 4 +- > tests/overlay/014 | 19 ++--- > tests/overlay/015 | 2 +- > tests/overlay/016 | 2 +- > tests/overlay/017 | 2 +- > tests/overlay/018 | 2 +- > tests/overlay/019 | 2 +- > tests/overlay/020 | 2 +- > tests/overlay/021 | 6 +- > 26 files changed, 333 insertions(+), 157 deletions(-) > > -- > 2.7.4 >
