Btrfs Send/Receive "no such file or directory" bug

Btrfs Send/Receive "no such file or directory" bug

[Robbie Ko]

Hi,

I have been testing btrfs send/receive recently.
I got an error "rename failed: no such file or directory" on receive side.
The followings are simple reproduced steps and related information,
Is there any  idea about what this might be or how to fix it?

uanme -a
Linux ubuntu 4.0.0-rc1-custom #2 SMP Fri Feb 27 22:20:12 CST 2015
x86_64 x86_64 x86_64 GNU/Linux
btrfs --version
Btrfs v3.14.1

 Steps to reproduce:

  $ mkfs.btrfs -f /dev/sdb
  $ mount /dev/sdb /mnt

  $ mkdir -p /mnt/data/n1/n2/p1/p2
  $ mkdir /mnt/data/n4
  $ mkdir -p /mnt/data/p1/p2

  $ btrfs subvolume snapshot -r /mnt /mnt/snap1

  $ mv /mnt/data/p1/p2 /mnt/data
  $ mv /mnt/data/n1/n2/p1/p2 /mnt/data/p1
  $ mv /mnt/data/p2 /mnt/data/n1/n2/p1
  $ mv /mnt/data/n1/n2 /mnt/data/p1
  $ mv /mnt/data/p1 /mnt/data/n4
  $ mv /mnt/data/n4/p1/n2/p1 /mnt/data

  $ btrfs subvolume snapshot -r /mnt /mnt/snap2

  $ btrfs send /mnt/snap1 -f /tmp/1.send
  $ btrfs send -p /mnt/snap1 /mnt/snap2 -f /tmp/2.send

  $ mkfs.btrfs -f /dev/sdc
  $ mount /dev/sdc /mnt2
  $ btrfs receive /mnt2 -f /tmp/1.send
  $ btrfs receive /mnt2 -f /tmp/2.send
  ERROR: rename data/p1/p2 -> data/n4/p1/p2 failed. no such file or directory

  Thanks.

  Robbie Ko

Re: Btrfs Send/Receive "no such file or directory" bug

[Filipe David Manana]

On Mon, Mar 2, 2015 at 12:22 PM, Robbie Ko <robbieko@synology.com> wrote:
> Hi,
>
> I have been testing btrfs send/receive recently.
> I got an error "rename failed: no such file or directory" on receive side.
> The followings are simple reproduced steps and related information,
> Is there any  idea about what this might be or how to fix it?
>
> uanme -a
> Linux ubuntu 4.0.0-rc1-custom #2 SMP Fri Feb 27 22:20:12 CST 2015
> x86_64 x86_64 x86_64 GNU/Linux
> btrfs --version
> Btrfs v3.14.1
>
>  Steps to reproduce:
>
>   $ mkfs.btrfs -f /dev/sdb
>   $ mount /dev/sdb /mnt
>
>   $ mkdir -p /mnt/data/n1/n2/p1/p2
>   $ mkdir /mnt/data/n4
>   $ mkdir -p /mnt/data/p1/p2
>
>   $ btrfs subvolume snapshot -r /mnt /mnt/snap1
>
>   $ mv /mnt/data/p1/p2 /mnt/data
>   $ mv /mnt/data/n1/n2/p1/p2 /mnt/data/p1
>   $ mv /mnt/data/p2 /mnt/data/n1/n2/p1
>   $ mv /mnt/data/n1/n2 /mnt/data/p1
>   $ mv /mnt/data/p1 /mnt/data/n4
>   $ mv /mnt/data/n4/p1/n2/p1 /mnt/data
>
>   $ btrfs subvolume snapshot -r /mnt /mnt/snap2
>
>   $ btrfs send /mnt/snap1 -f /tmp/1.send
>   $ btrfs send -p /mnt/snap1 /mnt/snap2 -f /tmp/2.send
>
>   $ mkfs.btrfs -f /dev/sdc
>   $ mount /dev/sdc /mnt2
>   $ btrfs receive /mnt2 -f /tmp/1.send
>   $ btrfs receive /mnt2 -f /tmp/2.send
>   ERROR: rename data/p1/p2 -> data/n4/p1/p2 failed. no such file or directory

Thanks for reporting this with an example.
I'll take a look at it.

>
>   Thanks.
>
>   Robbie Ko
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-- 
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."