BUG: Replacing a directory with a subvolume breaks incremental snapshots

BUG: Replacing a directory with a subvolume breaks incremental snapshots

[Robert White]

Howdy,

If you remove an existing directory and then create a subvolume with the 
same name the incremental send (btrfs send -p) will die with errno==2 
(file not found).

Steps to Reproduce:

btrfs subvol create scratch # make a playground
mkdir scratch/example
btrfs subvol snap -r scratch scratch_BEFORE
rmdir scratch/example
btrfs subvol create scratch/example
btrfs subvol snap -r scratch scratch_AFTER
btrfs send -p scratch_BEFORE scratch_AFTER >/dev/null

The output produced:
At subvol scratch_AFTER
ERROR: send ioctl failed with -2: No such file or directory

Re: BUG: Replacing a directory with a subvolume breaks incremental snapshots

[Filipe David Manana]

On Sat, May 24, 2014 at 3:24 AM, Robert White <rwhite@pobox.com> wrote:
> Howdy,
>
> If you remove an existing directory and then create a subvolume with the
> same name the incremental send (btrfs send -p) will die with errno==2 (file
> not found).
>
> Steps to Reproduce:
>
> btrfs subvol create scratch # make a playground
> mkdir scratch/example
> btrfs subvol snap -r scratch scratch_BEFORE
> rmdir scratch/example
> btrfs subvol create scratch/example
> btrfs subvol snap -r scratch scratch_AFTER
> btrfs send -p scratch_BEFORE scratch_AFTER >/dev/null
>
> The output produced:
> At subvol scratch_AFTER
> ERROR: send ioctl failed with -2: No such file or directory

Fixed here:  https://patchwork.kernel.org/patch/4238131/

Thanks Robert.

>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
Filipe David Manana,

"Reasonable men adapt themselves to the world.
 Unreasonable men adapt the world to themselves.
 That's why all progress depends on unreasonable men."