Add a test case for mkfs --rootdir, using files with different file
sizes to check if invalid large inline extent could exist.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Verify that a filesystem check operation (fsck) does not report the
following scenario as an error:
An extent is shared between two inodes, as a result of clone/reflink
operation, and for one of the inodes, lets call it inode A, the extent is
referenced through a file extent item as a prealloc extent, while for the
other inode, call it inode B, the extent is referenced through a regular
file extent item, that is, it was written to. The goal of this test is to
make sure a filesystem check operation will not report "odd csum items"
errors for the prealloc extent at inode A, because this scenario is valid
since the extent was written through inode B and therefore it is expected
to have checksum items in the filesystem's checksum btree for that shared
extent.
Such scenario can be created with the following steps for example:
mkfs.btrfs -f /dev/sdb
mount /dev/sdb /mnt
touch /mnt/foo
xfs_io -c "falloc 0 256K" /mnt/foo
sync
xfs_io -c "pwrite -S 0xab 0 256K" /mnt/foo
touch /mnt/bar
xfs_io -c "reflink /mnt/foo 0 0 256K" /mnt/bar
xfs_io -c "fsync" /mnt/bar
<power fail>
mount /dev/sdb /mnt
umount /mnt
This scenario is fixed by the following patch for the filesystem checker:
"Btrfs-progs: check, fix false error reports for shared prealloc extents"
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The commit cebf3b3722 ("btrfs-progs: introduce TEST_TOP and
INTERNAL_BIN for tests") did not convert all test paths. This would
break the exported testsutie.
Signed-off-by: David Sterba <dsterba@suse.com>
Regression test for false alerts in lowmem mode.
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ update test ]
Signed-off-by: David Sterba <dsterba@suse.com>
Add the testcase for false alert of data extent backref lost with the
extent offset.
The image can be reproduced by the following commands:
------
dev=~/test.img
mnt=/mnt/btrfs
umount $mnt &> /dev/null
fallocate -l 128M $dev
mkfs.btrfs $dev
mount $dev $mnt
for i in `seq 1 10`; do
xfs_io -f -c "pwrite 0 2K" $mnt/file$i
done
xfs_io -f -c "falloc 0 64K" $mnt/file11
for i in `seq 1 32`; do
xfs_io -f -c "reflink $mnt/file11 0 $(($i * 64))K 64K" $mnt/file11
done
xfs_io -f -c "reflink $mnt/file11 32K $((33 * 64))K 32K" $mnt/file11
btrfs subvolume snapshot $mnt $mnt/snap1
umount $mnt
btrfs-image -c9 $dev extent_data_ref.img
------
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Make the TOP variable more configurable, allow to set it to any path
where to find binaries when the testsuite is exported, or fallback to
system binaries.
There's now more code duplication, the logic is now more complex so it's
left open coded for clarity. Further cleanups are possible.
Signed-off-by: David Sterba <dsterba@suse.com>
Use TEST_TOP as base for tests to reference any files, this will be used
for git and external testsuite.
INTERNAL_BIN is needed for referencing binaries that could reside in
different paths in git vs external testsuite.
Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
[ add quotes around sourced files, update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
Move the testsuite to tests/ and make the tarball generation more
deterministic. As there could be many random temporary files left in the
test directories, we can't just copy them. Use 'git ls-tree' to
filter just what we want, this needs a slight extension of the file list
specification.
Signed-off-by: David Sterba <dsterba@suse.com>
Export the testsuite files to a separate tar. Since fsck tests depend
on btrfs-corrupt-block, and misc tests depends on both
btrfs-corrupt-block and fssum, so set it as prerequisites for package
commad.
Because, althougth fssum can be generated by source that are all in
tests directory, and has no rely on the btrfs's structure. But
btrfs-corrupt-block deeply relys on btrfs's structure. For consistency,
at the present stage, generete the two when create test tar.
Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
[ applied without changes, the generated tarball will be different from
the one after the follow up commits ]
Signed-off-by: David Sterba <dsterba@suse.com>
There are 2 fsck tests with the same number 027:
tree-reloc-tree
bad-extent-inline-ref-type
And we also have a hole in 015, so just rename tree-reloc-tree to 015,
to get rid of the duplicated test number and fill in the hole.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The run_check_umount_test_dev umounts the TEST_DEV and also optionally
uses the arguments but this would not work as expected if the TEST_DEV
is not a vald path for umount (eg. a restored image).
Update the helper so it tries to umount all paths, or fallback to
TEST_DEV to keep the current behaviour.
Signed-off-by: David Sterba <dsterba@suse.com>
Node sizes larger than 16k will fail due to enospc in the mount test.
This is likely caused by the kernel. Keep the condition only local to
travis so any other testing environment could see the failure
eventually.
Signed-off-by: David Sterba <dsterba@suse.com>
As btrfs is specific to Linux, %m can be used instead of strerror(errno)
in format strings. This has some size reduction benefits for embedded
systems.
glibc, musl, and uclibc-ng all support %m as a modifier to printf.
A quick glance at the BIONIC libc source indicates that it has
support for %m as well. BSDs and Windows do not but I do believe
them to be beyond the scope of btrfs-progs.
Compiled sizes on Ubuntu 16.04:
Before:
3916512 btrfs
233688 libbtrfs.so.0.1
4899 bcp
2367672 btrfs-convert
2208488 btrfs-corrupt-block
13302 btrfs-debugfs
2152160 btrfs-debug-tree
2136024 btrfs-find-root
2287592 btrfs-image
2144600 btrfs-map-logical
2130760 btrfs-select-super
2152608 btrfstune
2131760 btrfs-zero-log
2277752 mkfs.btrfs
9166 show-blocks
After:
3908744 btrfs
233256 libbtrfs.so.0.1
4899 bcp
2366560 btrfs-convert
2207432 btrfs-corrupt-block
13302 btrfs-debugfs
2151104 btrfs-debug-tree
2134968 btrfs-find-root
2281864 btrfs-image
2143536 btrfs-map-logical
2129704 btrfs-select-super
2151552 btrfstune
2130696 btrfs-zero-log
2276272 mkfs.btrfs
9166 show-blocks
Total savings: 23928 (24 kilo)bytes
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We use the prepare_test_dev helper to make sure the image has at least
this size. The "at least" part is not desired by some tests as the
device might be larger than the test expects.
Signed-off-by: David Sterba <dsterba@suse.com>
Though the newly added mkfs profiles should not be affected, let's add
the remaining valid single device profiles for better coverage.
Signed-off-by: David Sterba <dsterba@suse.com>
Add test case to check if the first device extent is occupying reserved
0~1M range.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Transform the test to the common helpers and don't manage the loop
devices here. The test category changes from check to misc.
Signed-off-by: David Sterba <dsterba@suse.com>
This functionality regressed some time ago and it was never caught. Seems no
one complained of that, but to be sure add a regression test to prevent future
regressions.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
To test regression 460e93f257 ("btrfs-progs: mkfs: check the status of
file at mkfs").
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ update test to create a out of /tmp ]
Signed-off-by: David Sterba <dsterba@suse.com>
New test case to test if the minimal device size given by "mkfs.btrfs"
failure case is valid.
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ renamed script ]
Signed-off-by: David Sterba <dsterba@suse.com>
So prepare_test_dev() can be called several times in one test case, to
test different device sizes.
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ switch to [ ] ]
Signed-off-by: David Sterba <dsterba@suse.com>
With extended tests in the following patch a file based filesystem image
also needs -f, otherwise it will fail.
Signed-off-by: David Sterba <dsterba@suse.com>
Reloc tree is a special tree with very short life span. It acts as a
special snapshot for any tree, with related nodes/leaves or EXTENT_DATA
modified to point to new position.
Considering the short life span and its special purpose, it should be
quite reasonable to keep them as both corner case for fsck and
educational dump for anyone interested in relocation.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
For snapshot shared tree blocks with source subvolume, the keyed backref
counter only counts the exclusive owned references.
In the following case, 258 is a snapshot of 257, which inherits all the
reference to this data extent.
------
item 4 key (12582912 EXTENT_ITEM 524288) itemoff 3741 itemsize 140
refs 179 gen 9 flags DATA
extent data backref root 257 objectid 258 offset 0 count 49
extent data backref root 257 objectid 257 offset 0 count 1
extent data backref root 256 objectid 258 offset 0 count 128
extent data backref root 256 objectid 257 offset 0 count 1
------
However lowmem mode used to iterate the whole inode to find all
references, and doesn't care if a reference is already counted by the
shared tree block.
Add the test case to check it.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The image is dumped by modifying kernel to sleep long enough before
merging relocation trees, so we can just copy the whole image to other
place before kernel begins to merge reloc trees.
And the base image is created by the following script to bump metadata
size:
------
dev=~/test.img
mnt=/mnt/btrfs
umount $mnt &> /dev/null
fallocate -l 128M $dev
mkfs.btrfs -f -n 4k -m single -d single $dev
mount $dev $mnt -o nospace_cache,max_inline=2048
btrfs subvolume create $mnt/src
for i in $(seq -w 0 128); do
xfs_io -f -c "pwrite 0 2k" $mnt/src/file_$i > /dev/null
done
for i in $(seq -w 0 64); do
btrfs subvolume snapshot $mnt/src/ $mnt/snapshot_$i
touch $mnt/snapshot_$i/new
done
sync
------
The image triggers several corner cases that the old lowmem mode didn't
consider.
Like metadata backref with FULL_BACKREF flag and only SHARED_BLOCK_REF
backrefs for metadata. And several tree reloc trees with shared
leaves/nodes to confuse old lowmem mode.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Introduce a new test image, which has an extent item with no inlined
extent data ref, but all keyed extent data ref.
Only in this case we can trigger fase data extent backref lost bug in
lowmem mode.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Add a image which can reproduce the extent item referencer count
mismatch false alert for lowmem mode.
Reported-by: Marc MERLIN <marc@merlins.org>
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba
Qu Wenruo
Filipe Manana
Lu Fengqi
Gu Jinxiang
Su Yue
Rosen Penev
Nikolay Borisov