[PVE-User] proxmox 2.0 file system

Alain Péan alain.pean at lpp.polytechnique.fr
Thu Jan 26 16:46:18 CET 2012

Hi Severin,

I think that for yourself, and for other, you can run a test with 
default installation with ext3, run pveperf, save results, then 
reinstall with 'linux ext4', run again pveperf, then try with 'linux 
xfs' (don't know if it is possible), run pveperf again, and publish here 
the results. It could be interesting...

See :

For something more consistent, you can run the same tests as Udo, with 
Bonnie++ or other tools.

But for ext4, I don't think there is something to track down. It is 
certainly how this filesystem behaves for such a system. Perhaps we have 
to wait for enhancements on the ext4 filesystem. It seems the mount 
option nodelalloc can make some difference...

The problem with ext3 is that filesystem check can be very long to run 
on big file systems with many data...


Le 25/01/2012 19:12, Severin Kacianka a écrit :
> Hello Alain, Rob and Martin,
> gah.. I feel so stupid for asking a FAQ... one even mentioned in the
> installation guide. Sorry about that :/ In the future I will never again
> write e-mails when I am about to leave the office
> Back on topic:
> Thank you for the very quick replies. Can I provide you with any useful
> benchmarks or debug output? Our server is a HP DL 160G6 - if additional
> benchmarks are useful to you for tracking down ext4's lower performance
> I can run them before the server goes live.
> Thank you for your time and kind replies,
> Severin
> On 01/25/2012 05:22 PM, Martin Maurer wrote:
>>> Is there any hope, that the default install will switch to ext4 (or offer a choice in
>>> the file system)? What would be the simplest and cleanest solution for me?
>>> Install debian squeeze (6.0) and install proxmox 2.0 ontop of it?
>> [Martin Maurer]
>> Reading the docs will help, see http://pve.proxmox.com/wiki/Quick_installation (this is for 2.0)
>> Martin
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Alain Péan - LPP/CNRS
Administrateur Système/Réseau
Laboratoire de Physique des Plasmas - UMR 7648
Observatoire de Saint-Maur
4, av de Neptune, Bat. A
94100 Saint-Maur des Fossés
Tel : 01-45-11-42-39 - Fax : 01-48-89-44-33

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