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In addition to the generic and filesystem-specific idmapped mount
testsuites that already exist upstream today add simple
infrastructure so any test can be run on idmapped mounts simply by
setting IDMAPPED_MOUNTS=true in the config file or section. The main
user for now will be overlay to verify it works correctly on
idmapped mounts.
Note that the infrastructure is completely generic so every
filesystem that supports idmapped mounts can simply run all of their
tests idmapped. But note that not all ways to create a mount have
been converted yet. That includes e.g. _dmthin_mount and direct
calls to _mount in various tests.
In addition, there will be corner-cases. For example, xfs doesn't
allow bulkstat on idmapped mounts because it is a filesystem wide
operation, i.e. you can retrieve information for any inode in the
filesystem so the operation cannot be scoped reasonably under a
single mount. So xfstests testing bulkstat will fail as it's
blocked. Similar for some btrfs ioctl()s.
While we could of course restrict this testmode to -overlay for
which we know things work correctly we should not do this. It would
mean that people won't start using it and so we won't see issues
unless someone sits down and goes through more than 1000 tests and
figures out for each individual one whether it needs to be skipped
or not.
So instead allow this mode but for all filesystems so people can
start running and reporting failures and we can fix them up or block
them as we detect them.
Cc: Eryu Guan <guaneryu@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <fstests@vger.kernel.org>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
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Add support for running unionmount-testsuite from xfstests.
This requires that unionmount-testsuite is installed under src dir or
that UNIONMOUNT_TESTSUITE variable points to the location of the
testsuite. It also requires a recent version of unionmount-testsuite
that supports setting basedir path via UNIONMOUNT_* environment variables.
Add tests for three basic configurations:
1. overlay with upper/lower on same fs
2. overlay with upper/lower not on same fs without xino
3. overlay with upper/lower not on same fs with xino
The samefs test uses scratch partition for lower/upper layers.
The non samefs tests use the scratch partition for upper layer and the
test partition for lower layer.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
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Hook filesystem check helper to _check_test_fs and _check_scratch_fs
for checking consistency of underlying dirs of overlay filesystem.
These helpers works only if fsck.overlay exists.
This patch introduce OVERLAY_FSCK_OPTIONS use for check overlayfs like
OVERLAY_MOUNT_OPTIONS, and also introduce a mount point check helper in
common/rc to detect a dir is a mount point or not.
[ _check_test_fs/_check_scratch_fs part picked from Amir's patch, thanks ]
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
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When TEST/SCRATCH_DEV are configured to the base fs block device,
use this information to mount base fs before running tests,
unmount it after running tests and cycle on _test_cycle_mount
along with the overlay mounts.
This helps catching overlayfs bugs related to leaking objects in
underlying (base) fs.
To preserve expected tests behavior, the semantics are:
- _scratch_mkfs mounts the base fs, cleans all files, creates
lower/upper dirs and keeps base fs mounted
- _scratch_mount mounts base fs (if needed) and mounts overlay
- _scratch_unmount unmounts overlay and base fs
Tests that use _scratch_unmount to unmount a custom overlay mount
and expect to have access to overlay base dir, were fixed to use
explicit umount $SCRATCH_MNT instead.
The overlay test itself, does not support formatting the base fs,
so config options like MKFS_OPTIONS and FSCK_OPTIONS are ignored
on 'check -overlay'.
The config option MOUNT_OPTIONS is used to mount the base scratch fs.
The config option TEST_FS_MOUNT_OPTS is used to mount the base test fs.
The config option OVERLAY_MOUNT_OPTIONS is used to mount both test and
scratch overlay mounts.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
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Instead of setting the vars TEST/SCRATCH_DEV to overlay base dirs,
allow setting them to block devices to configure the base fs partition,
where overlay dirs will be created.
For example, the following config file can be used to run tests on
xfs test/scratch partitions:
TEST_DEV=/dev/sda5
TEST_DIR=/mnt/test
SCRATCH_DEV=/dev/sda6
SCRATCH_MNT=/mnt/scratch
FSTYP=xfs
Using the same config file, but executing './check -overlay' will
use the same partitions as base fs for overlayfs directories
and set TEST_DIR/SCRATCH_MNT values to overlay mount points, i.e.:
/mnt/test/ovl-mnt and /mnt/scratch/ovl-mnt.
The base fs should be pre-formatted and mounted when starting the test.
An upcoming change is going to support mount/umount of base fs.
The new vars OVL_BASE_SCRATCH_MNT/TEST_DIR are set to point at the
overlayfs base dirs in either legacy or new config method.
Tests should always use these vars and not the legacy SCRATCH/TEST_DEV
vars when referring to overlay base dir.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
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