[PVE-User] vzdump.conf settings not taken into account

[Luca Fornasari]

Martin,

I think there is need for some clarification about vzdump performances.
Actually it is not clear to most users if the fast device has to be the 
source device or the destination device (or even both?).

One more question: in case of VMs on LVM can pveperf be used on ad-hoc 
created filesystem on the same device where LVM/VMs resides?

Maybe a page on the wiki can help as well.

Best Regards

Luca Fornasari
Managing Technical Director
--
Up Provider
Via Vincenzo Monti, 43 A
10126 Torino
Tel. +39 011 6996701
Fax  +39 011 6503344


-------- Original Message --------
Subject: Re: [PVE-User] vzdump.conf settings not taken into account
From: Martin Maurer <martin at proxmox.com>
To: pve-user at pve.proxmox.com <pve-user at pve.proxmox.com>
CC:
Date: 02/21/2012 09:58 AM
> Hi,
>
> Provide a pveperf of your raid1 (if you use a filesystem on that, pveperf does not work for block devices/LVM).
>
>> pveperf /path
> Martin
>
>> -----Original Message-----
>> From: pve-user-bounces at pve.proxmox.com [mailto:pve-user-
>> bounces at pve.proxmox.com] On Behalf Of Laurent CARON
>> Sent: Dienstag, 21. Februar 2012 09:54
>> To: pve-user at pve.proxmox.com
>> Subject: Re: [PVE-User] vzdump.conf settings not taken into account
>>
>> On 21/02/2012 09:50, Martin Maurer wrote:
>>> Hi,
>>>
>>> You cannot increase the speed just with this setting - as your environment
>> performance is below the specified vzdump limit you do not see any result.
>>> Use 5000 and you will see that its slower.
>>>
>>> To get a faster system, find the bottleneck in your IO. A good start is using a
>> fast hardware raid controller - your fsyncs/sec are much too low, you should
>> get 1000 or higher here.
>>
>> Hi Martin,
>>
>> /dev/md0 is the array where the OS resides. My VMs are on a RAID1 array
>> (SSD) with BBWC.
>>
>>> Btw, you software packages are outdated, upgrade to latest.
>> I'm waiting for a maintenance window to do so.
>>
>> Thanks
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>
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