Use the extent size hint to force leftover CoW reservations then
crash the filesystem to see how recovery works.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Ensure that we can pass absurdly enormous offsets and lengths to
reflink/dedupe and it'll survive.
v2: Ask for dedupe in the dedupe test.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[hch@lst.de: call _require_test_dedupe]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Perform copy-on-writes at random offsets to stress the CoW allocation
system. Assess the effectiveness of the extent size hint at
combatting fragmentation via unshare, a rewrite, and no-op after the
random writes.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Create a couple of XFS-specific tests -- one to check that growing
and shrinking the refcount btree works and a second one to check
what happens when we hit maximum refcount.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Update the existing stress tests to ensure that we can handle
reflinking the same block a million times, and that we can handle
reflinking million different extents. Add a couple of tests to ensure
that we can ^C and SIGKILL our way out of long-running reflinks.
v2: Don't run the signal tests on NFS, as we cannot interrupt NFS
clone operations.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[hch@lst.de: don't run on NFS]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Ensure that CoW operations against shared blocks in the source file
work correctly.
v2: remove filefrag dependencies
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Test various scenarios (with dm-flakey) where we simulate write
failures during CoW, to see if the FS can get through it without
blowing up or corrupting data. Plumb in a FS-generic method to
sort out repairing filesystems after they get hit by IO errors.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Ensure that we correctly handle a CoW operation immediately followed
by a truncate, falloc, fpunch, fzero, fcollapse, and finsert operation
in the middle of the CoW'd region before any flush can occur.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Check that we don't expose old disk contents when a directio write to
an unwritten extent fails due to IO errors. This primarily affects
XFS and ext4.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Fix style problems such as unnecessary use of quotes, add helper
variables to reduce visual clutter, and other minor fixes to make the
first batch of tests more closely resemble the second round tests.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Refactor the code that creates files with mixed block types that we feed
into CoW tests to make sure that we can tiptoe around that kind of stuff.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Create a helper that looks for a test program in src/ and fails the
test if it doesn't exist. Refactor the existing testcases to use it.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Add functions to the dmerror routine so that we can load both the
error table and the linear table. This will help us with EIO testing
of copy-on-write.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Turns out that check already runs _check_filesystems after each test,
so we don't need to do this at the end of each test.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Seems either I have a different lsattr version, or different mount points
cause differences in the golden output. Send the lsattr output through
the whitespaces filter so that it works everywhere.
The lsattr output /does/ change depending on mountpoints. Ick. I'd
actually changed it to the long format output because line length in
the short format changes every time the flags change.
Signed-off-by: Christoph Hellwig <hch@lst.de>
[darrick.wong@oracle.com: update changelog]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Since this test examines dedupe behavior, the documentation should
say 'dedupe', not 'reflink'. Furthermore, the feature checks must
look for working dedupe functionality, not reflink functionality.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[hch@lst.de: add the test for dedupe support]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Test that an incremental send operation which issues clone operations
works for files that have a full path containing more than one parent
directory component.
This used to fail before the following patch for the linux kernel:
"[PATCH] Btrfs: send, fix extent buffer tree lock assertion failure"
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
NFS uses 32K blocks and thus the numbers used for sanity checking
various reflink operations are way off. Change to relative margings
and increase them a bit to make NFS happy.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Since $TESTDIR is a local variable, make it lowercase to avoid
confusion with $TEST_DIR. While we're at it, make all the local
variables lowercase.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
The xfs_io dedupe command originally didn't print dedupe errors
to stderr like you'd expect. Since that was fixed, the golden
output should be changed to reflect that.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Darrick J. Wong
Filipe Manana
Christoph Hellwig