[PVE-User] ZFS on shared storage?

[Michael Rasmussen]

On Tue, 25 Feb 2014 12:03:01 -0500
Martin Marenz <martin.marenz at itp.uni-leipzig.de> wrote:

> 
> It is possible to use ZFS storage in such configuration, instead of a
> shared lvm storage for the KVM guests.
> And if it is possible, it is a good idea? have anybody experience with it?
> 
Yep. Support for using ZFS is built-in.
http://pve.proxmox.com/wiki/Storage:_ZFS

I have a ZFS storage array running on commodity hardware (Stripped
mirror on SATA2) which seems to give more than double the performance
compared to a 3 node ceph cluster running on enterprise hardware. See
attached screendump from crystalmark from a VM running Windows 7.

CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :    92.061 MB/s
          Sequential Write :    83.432 MB/s
         Random Read 512KB :    91.106 MB/s
        Random Write 512KB :    80.351 MB/s
    Random Read 4KB (QD=1) :     7.883 MB/s [  1924.5 IOPS]
   Random Write 4KB (QD=1) :     7.473 MB/s [  1824.5 IOPS]
   Random Read 4KB (QD=32) :    44.840 MB/s [ 10947.2 IOPS]
  Random Write 4KB (QD=32) :    43.651 MB/s [ 10656.9 IOPS]

  Test : 100 MB [E: 1.0% (58.7/6141.0 MB)] (x5)
  Date : 2014/02/25 18:39:07
    OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x64)

-- 
Hilsen/Regards
Michael Rasmussen

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--------------------------------------------------------------
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