Some filesystem tests are failing when their image is prepared with
guestmount, but succeeding if loop mounts are used instead. The reason
seems to be a race condition the guestmount(1) manual page explains:
When guestunmount(1)/fusermount(1) exits, guestmount may still be
running and cleaning up the mountpoint. The disk image will not be
fully finalized.
This means that scripts like the following have a nasty race condition:
guestmount -a disk.img -i /mnt
# copy things into /mnt
guestunmount /mnt
# immediately try to use 'disk.img' ** UNSAFE **
The solution is to use the --pid-file option to write the guestmount
PID to a file, then after guestunmount spin waiting for this PID to
exit.
The Python standard library has an os.waitpid() function for waiting a
child to terminate, but it cannot wait on non-child processes. Implement
a utility function that can do this by polling the process repeatedly
for a given duration, optionally killing the process if it won't
terminate on its own. Apply the suggested solution with this utility
function, which makes the failing tests succeed again.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
If guestmount isn't available on the system, filesystem test setup falls
back to using loop mounts to prepare its disk images. If guestmount is
available but fails to work, the tests are immediately skipped. Instead
of giving up on a guestmount failure, try using loop mounts as an
attempt to keep tests running.
Also stop checking if guestmount is in PATH, as trying to run a missing
guestmount can now follow the same failure codepath and fall back to
loop mounts anyway.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
On some distributions the mkfs is under /sbin and /sbin is not set
for mere users. Include /sbin to the PATH when creating file system,
so that users won't get a scary traceback from Python.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Commit 1ba21bb06b ("test: Don't unmount not (yet) mounted system")
fixes an issue in the filesystem tests where the test setup may fail
to mount an image and still attempt to unmount it. However, the commit
unintentionally breaks the test setups in two ways.
The newly created unmounted filesystem images are being immediately
deleted due to some cleanup steps being misplaced into finally blocks,
which makes them always run instead of only on failures. The mount calls
always fail since the images never exist, causing the tests to be always
skipped. This patch moves these cleanup calls into the except blocks to
fix this and makes the tests run again.
There are also unmount calls misplaced into finally blocks, making them
run after the tests instead of before the tests. These unmount calls
make the filesystem image file consistent with the changes made to it as
part of the test setup, and this misplacement is making a number of
tests fail unexpectedly.
The unmount calls must be run before the tests use the image, meaning
before the yield call and not in the finally block. They must also be
run as a cleanup step when the filesystem setup fails, so they can't be
placed as the final call in the try blocks since they would be skipped
on such failures. For these reasons, this patch places the unmount calls
both in the except blocks and the else blocks of the final setup step.
This makes the unexpectedly failing tests to succeed again.
Furthermore, this isolates the mount calls to their own try-except
statement to avoid reintroducing the original issue of unmounting a
not-mounted image while fixing the unmount misplacement.
After these fixes, running "make tests" with guestmount available results
in two test failures not related to the mentioned commit. If the
guestmount executables are unavailable, the mounts fallback to using
sudo and result in no failures.
Fixes: 1ba21bb06b ("test: Don't unmount not (yet) mounted system")
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
When test suite tries to create a file for a new filesystem test case and fails,
the clean up of the exception tries to unmount the image, that has not yet been
mounted. When it happens, the fuse_mounted global variable is set to False and
inconveniently the test case tries to use sudo, so without this change the
admin of the machine gets an (annoying) email:
Subject: *** SECURITY information for example.com ***
example.com : Feb 5 19:43:47 : ... COMMAND=/bin/umount .../build-sandbox/persistent-data/mnt
and second run of the test cases on uncleaned build folder will ask for sudo
which is not what expected.
Besides that there is a double unmount calls during successfully run test case.
All of these due to over engineered Python try-except clause and people didn't
get it properly at all. The rule of thumb is that don't use more keywords than
try-except in the exception handling code. Nevertheless, here we adjust code
to be less intrusive to the initial logic behind that complex and unclear
constructions in the test case, although it adds a lot of lines of the code,
i.e. splits one exception handler to three, so on each step we know what
cleanup shall perform.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
As noted in comments, yield_fixture has been deprecated for longer than
our minimum required version of pytest. Newer versions of pytest cause
this to be a louder warning, and as the migration is trivial, perform it
now.
Signed-off-by: Tom Rini <trini@konsulko.com>
Modify various test/py filesystem creation routines to support systems
that don't implement the metadata_csum ext4 feature.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
For non-root users mkfs.vfat is not in the search path at least on Debian.
Hence when running 'make tests' a message indicates that file system tests
have been skipped:
SKIPPED [13] test/py/tests/test_fs/conftest.py:340: Setup failed for
filesystem: fat16
This message is not really helpful as the executed program is not
indicated. Provide a more complete message like
SKIPPED [13] test/py/tests/test_fs/conftest.py:340: Setup failed for
filesystem: fat16.
Command 'mkfs.vfat -F 16 build-sandbox/persistent-data/3GB.fat16.img'
returned non-zero exit status 127.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The check_output function from the subprocess Python module by default
returns data as encoded bytes and leaves decoding to the application.
Given our uses of the call, it makes the most sense to immediately
decode the results.
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org> [on sandbox]
Signed-off-by: Tom Rini <trini@konsulko.com>
Use the 2to3 tool to perform numerous automatic conversions from Python
2 syntax to Python 3. Also fix whitespace problems that Python 3
catches that Python 2 did not.
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org> [on sandbox]
Signed-off-by: Tom Rini <trini@konsulko.com>
Test cases are:
1) basic link creation, verify it can be followed
2) chained links, verify it can be followed
3) replace exiting file a with a link, and a link with a link. verify it
can be followed
4) create a broken link, verify it can't be followed
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
If the metadata checksums are enabled, all write operations will fail.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Some tests have ended up using double quotes where single quotes could be
used. Adjust this for consistency with the rest of U-Boot's Python code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
After Siomon's comment, add a descriptive comment (docstring) to each of
helper functions in conftest.py. No functionality changed.
Signed-off-by: Akashi Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Since there is no use of fs_type in umount_fs(), just remove it.
Signed-off-by: Akashi Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
In this commit, test cases for unlink interfaces are added as part of
"test_fs" test suite.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
In this commit, test cases for mkdir interfaces are added as part of
"test_fs" test suite.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
In this commit and the following, test scripts for new filesystem
functionalities introduced by my patch set, "fs: fat: extend FAT write
operations," are provided.
In particular, this patch adds test cases for sub-directory write
and write with non-zero offset.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
In this commit, the same set of test cases as in test/fs/fs-test.sh
is provided using pytest framework.
Actually, fs-test.sh provides three variants:"sb" (sb command), "nonfs"
(fatxx and etc.) and "fs" (hostfs), and this patch currently supports
only "nonfs" variant; So it is not a replacement of fs-test.sh for now.
Simple usage:
$ py.test test/py/tests/test_fs [<other options>]
You may also specify filesystem types to be tested:
$ py.test test/py/tests/test_fs --fs-type fat32 [<other options>]
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
