[PVE-User] [sirtcp at gmail.com: Re: Backup issue]

[proxmox at uap.edu.ar]

Hi,
I had this problem 3 times, and it happened to me when using software raid, and only at the exact moments that i was running a virtual machine backup and the software raid was doing a consistency-check (first sunday of every month by default)

It seems that a very loaded harddisk with softraid had some kind of issue...
I resolved those issues doing the same things Dietmar suggested !

And after that, you have 2 options: a hardware raid controller, or not doing VM backup at the same time the softraid is checking consistency...

Hope it helps...

- Tito

 
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From: Muhammad Yousuf Khan <sirtcp at gmail.com>
To: Dietmar Maurer <dietmar at proxmox.com>
Cc: "pve-user at pve.proxmox.com" <pve-user at pve.proxmox.com>
Subject: Re: [PVE-User] Backup issue
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Hi Dietmar,

Thank you for the response, actually i was going to ask about this error in
next thread but i am glad that you have raised  it in this message trail :),
can you please tell me what is this basically means?. i know very little
about this error that it has some sort of relation with LVM. can you tell me
more about this and the easiest way to resolve this dm-2 error. however
every thing is working find right now.

 | Kill the vzdump process (and run 'qm unlock <vmid>'), then test if that
bug is reproducible.

after killing the vzdump process it shows "unable to read config for VM 109"
,but i already killed that process last night and have completed the new
backup of said VM 109 and it was successful this time.


Thanks

On Tue, Sep 6, 2011 at 4:44 PM, Dietmar Maurer <dietmar at proxmox.com> wrote:

> > No error message can be seen in VZDUMP log.
> >
> >Aug 30 04:41:57 INFO:   /dev/dm-2: read failed after 0 of 4096 at 0:
>
> This looks like an error to me.
>
> > can any one tell me why the process is stuck. and what is the solution.
>
> Kill the vzdump process (and run 'qm unlock <vmid>'), then test if that bug
> is reproducible.
>
> - Dietmar
>
>

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Milton Sand

Tecnologia y Operaciones
Universidad Adventista del Plata
ayuda at uap.edu.ar