mirror of
https://github.com/kdave/btrfs-progs
synced 2025-03-29 14:46:21 +00:00
dad9db45bb
[BUG]
When using mkfs.btrfs --rootdir option, the data extents generated will
have 0 as their generation in extent tree:
# mkdir /tmp/rootdir
# xfs_io -f -c "pwrite 0 16k" /tmp/rootdir/foobar
# mkfs.btrfs -f --rootdir /tmp/rootdir $dev
# btrfs ins dump-tree -t extent $dev
btrfs-progs v5.19.1
extent tree key (EXTENT_TREE ROOT_ITEM 0)
leaf 30474240 items 13 free space 15536 generation 7 owner EXTENT_TREE
leaf 30474240 flags 0x1(WRITTEN) backref revision 1
fs uuid c1f05988-49f9-4dd4-8489-b90d60f522ee
chunk uuid 40f81603-fe75-4f58-aa9e-e74e28df8523
item 0 key (13631488 EXTENT_ITEM 16384) itemoff 16230 itemsize 53
refs 1 gen 0 flags DATA <<< Generation is 0
...
[CAUSE]
In __btrfs_record_file_extent() we just set the extent generation to 0.
[FIX]
Use trans->transid to properly fill extent generation.
Now after mkfs, the first data extent backref looks like this:
item 0 key (13631488 EXTENT_ITEM 16384) itemoff 16230 itemsize 53
refs 1 gen 7 flags DATA
...
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
|
||
|---|---|---|
| .. | ||
| backref.c | ||
| backref.h | ||
| ctree.c | ||
| ctree.h | ||
| delayed-ref.c | ||
| delayed-ref.h | ||
| dir-item.c | ||
| disk-io.c | ||
| disk-io.h | ||
| extent_io.c | ||
| extent_io.h | ||
| extent-tree.c | ||
| file-item.c | ||
| file.c | ||
| free-space-cache.c | ||
| free-space-cache.h | ||
| free-space-tree.c | ||
| free-space-tree.h | ||
| inode-item.c | ||
| inode.c | ||
| print-tree.c | ||
| print-tree.h | ||
| root-tree.c | ||
| send.h | ||
| transaction.c | ||
| transaction.h | ||
| ulist.c | ||
| ulist.h | ||
| uuid-tree.c | ||
| volumes.c | ||
| volumes.h | ||
| zoned.c | ||
| zoned.h | ||