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btrfs-progs: tests: Add test case to check file hole extents with NO_HOLES flag 

Add test case which we have NO_HOLES incompat flag while still have
hole file extent.

This can be created by enabling NO_HOLES feature on an existing
filesystem, which lowmem mode would cause false alert for it.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ minor adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2017-06-16 09:43:23 +08:00 committed by David Sterba
parent 163ca0e431
commit bb305ae832
1 changed files with 18 additions and 0 deletions
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18
tests/fsck-tests/025-file-extents/test.sh
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@ -5,8 +5,10 @@ source "$TOP/tests/common"
check_prereq btrfs
check_prereq mkfs.btrfs
check_prereq btrfstune
check_global_prereq dd
check_global_prereq fallocate
check_global_prereq truncate
setup_root_helper
prepare_test_dev 128M
@ -38,5 +40,21 @@ test_compressed_inline_extent()
run_check "$TOP/btrfs" check "$TEST_DEV"
}
# File extent hole with NO_HOLES incompat feature set.
# Lowmem mode will cause a false alert as it doesn't allow any file hole
# extents, while we can set NO_HOLES at anytime we want, it's definitely a
# false alert
test_hole_extent_with_no_holes_flag()
{
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$TEST_DEV"
run_check_mount_test_dev
run_check $SUDO_HELPER truncate -s 16K "$TEST_MNT/tmp"
run_check_umount_test_dev
run_check $SUDO_HELPER "$TOP/btrfstune" -n "$TEST_DEV"
run_check "$TOP/btrfs" check "$TEST_DEV"
}
test_paritical_write_into_prealloc
test_compressed_inline_extent
test_hole_extent_with_no_holes_flag