[Xen-API] XCP VM-export error and very slow via VM Protection policy

[Jonathon Royle <jonathon@xxxxxxxxxxxxxxxx>]

I have recently upgraded to XCP 1.6 (clean install and VM export/import) but I am finding that archive element of VM Protection Policy is regularly failing with error ‘Internal error: Failure (“Compression via zcat failed: exit code 1”)’

 

I have several Protection Policies which archive to a nfs share, some archive every time some just weekly but this behaviour seems to be consistent for them all.  Typically only one completes.  I have looked in messages and xensource.log and whilst I can see the export being started I cannot find anything more concrete on reasons for failure

 

Example

 

Dec 18 09:04:32 tottington xapi: [ info|tottington|7220235 UNIX /var/xapi/xapi||cli] xe vm-export password=null vm=cfc3a8b4-8630-c362-3ab1-96e6bddec71d filename=/tmp/4ad35422-bd7c-499b-af64-1c5a206e50b9/WinXP-1e117f74-93b0-86/20121218-0904.xva compress=true username=root

 

I have also manually started the task (same syntax) and whilst the job started it failed within 15 mins ‘INTERNAL_ERROR: [ Unix.Unix_error(56, "write", "") ]’.

 

I then manually started an export via XenCenter which ran to completion with no issues and so much quicker (36 mins vs 4hrs and still going)!  (one difference is via cifs rather than nfs share to same remote volume)

 

 

Regards,

 

Jon

 

Apologies for re-send.  I sent initially to wrong email distribution

 

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