mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-28 00:52:17 +00:00
263184c7d2
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>
|
||
|---|---|---|
| .. | ||
| 001-bad-file-extent-bytenr | ||
| 002-bad-transid | ||
| 003-shift-offsets | ||
| 004-no-dir-index | ||
| 005-bad-item-offset | ||
| 006-bad-root-items | ||
| 007-bad-offset-snapshots | ||
| 008-bad-dir-index-name | ||
| 009-no-dir-item-or-index | ||
| 010-no-rootdir-inode-item | ||
| 011-no-inode-item | ||
| 012-leaf-corruption | ||
| 013-extent-tree-rebuild | ||
| 014-no-extent-info | ||
| 016-wrong-inode-nbytes | ||
| 017-missing-all-file-extent | ||
| 018-leaf-crossing-stripes | ||
| 019-non-skinny-false-alert | ||
| 020-extent-ref-cases | ||
| 021-partially-dropped-snapshot-case | ||
| 022-qgroup-rescan-halfway | ||
| 023-qgroup-stack-overflow | ||
| 024-clear-space-cache | ||
| 025-file-extents | ||
| 026-bad-dir-item-name | ||
| 027-bad-extent-inline-ref-type | ||
| 028-unaligned-super-dev-sizes | ||