[OpenAFS] vos move: Error reading dump file

[Andreas Breitfeld]

On 06/01/2017 02:50 PM, Jeffrey Altman wrote:
> On 6/1/2017 7:43 AM, Andreas Breitfeld wrote:
>> Hello,
>>
>> 'vos move' of a big volume (8.7TB) id 537070263 failed with reporting
>> the following messages in VolserLog on the target server:
>>
>> ###
>> Tue May 30 11:41:49 2017 1 Volser: WriteFile: Error reading dump file
>> 171404 size=240744204 nbytes=215734028 (0 of 8192): File exists; restore
>> aborted
> 
> The target server is reporting that it is attempting to read 8K from the
> incoming rx_call but received 0 bytes.  The "File exists" is a red
> herring because 'errno' is not set by rx.
> 
> You need to look at the source server to determine why the call ended.

VolserLog on the source server contains:

Tue May 30 11:43:55 2017 1 Volser: DumpVolume: Rx call failed during 
dump, error -1
Tue May 30 11:44:38 2017 1 Volser: Delete: volume 537112719 deleted

> 
> Have you moved this volume in the past?

Yes, some months ago.

> I ask because an 8.7TB volume
> exceeds the maximum safe volume size in OpenAFS (2TB - 1) by quite a
> bit.  Values such as disk usage, file count, and others are signed
> 32-bit integers that can overflow.  While the volume remains in place
> OpenAFS servers will happily serve the data but it is possible that the
> volume can no longer be represented by the dump format and that the
> salvager can no longer reference all of the vnodes that are present in
> the volume.

Thanks for detailed explanation. We consider to split the volume to 
multiple volumes with safe volume size.

Thanks,
Andreas

> 
> Jeffrey Altman
>