On 2018年02月28日 18:13, Lu Fengqi wrote:
> 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
> ------
> 

The image reproducer looks good.

Reviewed-by: Qu Wenruo <w...@suse.com>

Thanks,
Qu


> Signed-off-by: Lu Fengqi <lufq.f...@cn.fujitsu.com>
> ---
>  .../fsck-tests/020-extent-ref-cases/extent_data_ref.img  | Bin 0 -> 6144 
> bytes
>  1 file changed, 0 insertions(+), 0 deletions(-)
>  create mode 100644 tests/fsck-tests/020-extent-ref-cases/extent_data_ref.img
> 
> diff --git a/tests/fsck-tests/020-extent-ref-cases/extent_data_ref.img 
> b/tests/fsck-tests/020-extent-ref-cases/extent_data_ref.img
> new file mode 100644
> index 
> 0000000000000000000000000000000000000000..3ab2396ba9c810d98f16a5efcf7fe23ee4b12ab5
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> 

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