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Qu Wenruo
24f2c46da1
The test case checks if btrfs can trim adjacent extents across
adjacent block groups boundary correctly.
The test case craft the following extents layout:
| BG1 | BG2 | BG3 |
Bytenr: X-8M X X+512M X+1G X+1G+128M
|//////|//////| | |//|
There is a long existing bug that, when btrfs is trying to trim the
range at [X+512M, X+1G+128M), it will only trim [X+512M, X+1G).
This test case is the regression test for this long existing bug.
It will verify the trimmed bytes by using loopback device backed up
by a file, and checking the bytes used by the file to determine how
many bytes are trimmed.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
3 lines
43 B
Plaintext
3 lines
43 B
Plaintext
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