Reproducable un-receive-able snapshot send

Reproducable un-receive-able snapshot send

[Tom Hale]

Would anyone be interested in helping me debug:

* btrfs-progs v5.4

* A FS which is reported as OK by 'scrub'

* A parent and child snapshot combination which cannot be received - 
even on the same FS it was sent from. (In fact, many children cannot be 
received based on the one parent)

* Send aborts with this message:
ERROR: cannot open 
/media/ssd/btrbk/rootfs/TEST/rootfs.20200126T0000/o3658332-53841-0: No 
such file or directory

* Lots of directories (not created by me) in the "root" of the partially 
received subvolume named such as:
o1101063-3046-0
o1194908-3075-0
o127448-2877-0
o127454-2877-0
o127714-2877-0
o128369-2877-0
o1305760-3109-0

If so, please give me directions / point me at resources to gather 
information for you :)

[Please reply-all - I'm  not on-list]

-- 
Tom Hale

Re: Reproducable un-receive-able snapshot send

[Filipe Manana]

On Mon, Feb 24, 2020 at 2:20 PM Tom Hale <tom@hale.ee> wrote:
>
> Would anyone be interested in helping me debug:
>
> * btrfs-progs v5.4
>
> * A FS which is reported as OK by 'scrub'
>
> * A parent and child snapshot combination which cannot be received -
> even on the same FS it was sent from. (In fact, many children cannot be
> received based on the one parent)
>
> * Send aborts with this message:
> ERROR: cannot open
> /media/ssd/btrbk/rootfs/TEST/rootfs.20200126T0000/o3658332-53841-0: No
> such file or directory
>
> * Lots of directories (not created by me) in the "root" of the partially
> received subvolume named such as:
> o1101063-3046-0
> o1194908-3075-0
> o127448-2877-0
> o127454-2877-0
> o127714-2877-0
> o128369-2877-0
> o1305760-3109-0
>
> If so, please give me directions / point me at resources to gather
> information for you :)

So, first thing to try:

Get btrfs-progs' source and apply the following patch:

https://patchwork.kernel.org/patch/11053327/

See first if it works after that.

If not, try to provide the full output of receive with "-vv" argument,
so that it dumps the sequence of commands it's executed. That may or
may not be enough the figure out why the problem happens.

Thanks.



>
> [Please reply-all - I'm  not on-list]
>
> --
> Tom Hale



-- 
Filipe David Manana,

“Whether you think you can, or you think you can't — you're right.”

Re: Reproducable un-receive-able snapshot send

[Tom Hale]

On 24/2/20 9:50 pm, Filipe Manana wrote:
> On Mon, Feb 24, 2020 at 2:20 PM Tom Hale <tom@hale.ee> wrote:
>>
>> * Send aborts with this message:
>> ERROR: cannot open
>> /media/ssd/btrbk/rootfs/TEST/rootfs.20200126T0000/o3658332-53841-0: No
>> such file or directory
>>
>> * Lots of directories (not created by me) in the "root" of the partially
>> received subvolume named such as:
>> o1101063-3046-0

> So, first thing to try:
> 
> Get btrfs-progs' source and apply the following patch:
> 
> https://patchwork.kernel.org/patch/11053327/

This patch seems to be pointing at just my problem. Can I be lazy and 
wait for it to be served up by Arch package?

Ie, has it / will it been merged?

[Please reply-all - I'm  not on-list]

-- 
Tom Hale