[PVE-User] Proxmox NFS issue

[Michael Rasmussen]

Hi, 

Maybe you could try the new ZFS plugin which will expose native ZFS
through iSCSI? 

This also means cloning and online native zfs snapshots with raw images.


On 11-06-2013 16:05, Muhammad Yousuf Khan wrote: 

> i am facing slow read and write on our new NAS. 
> here is the hardware detail.
> 
> Proxmox : 
> 12GB RAM 
> Xeon 3.2 (2 processors) 
> 500GB HD for Proxmox and Debian OS.
> 
> Remote SAN/NAS: 
> OS : omniOS 
> RAM : 12 GB 
> FS : ZFS 
> Sharing protocol : NFS 
> Xeon 3.2 (2 processors) 
> 1 SSD 60GB ARCH2 
> 1 SSD 120GB ZIL 
> 3 Mix capasity HD 800GB,500GB and 1TB all are 64bit Cache. 
> ZFS RAID Type : RaidZ
> 
> when i am inside the VM and trying to copy "to" network or "from" network i see very slow traffic. specifically talking about inside VM.
> 
> kindly find an attach file. to see my read and write performance. in side graphs Red line is showing my copy data-to-VM and white line showing copy data-to-network.
> 
> when i am copying data from terminal it is showing me good speed. 
> 
> here is the some more detail on Mount points. (output of my "df -h" command)
> 
> 10.x.x.25:/tank/VMbase 903G 2.1G 901G 1% /nfscom 
> 
> --------------------------------------------------------------------------- 
> here is some copy test on terminal from the nfs mount point
> 
> root at bull:/nfscom/images/1009# rsync --progress vm-1009-disk-1.raw /
> vm-1009-disk-1.raw
> 824311808 7% 70.00MB/s 0:02:18
> 
> (you can see i am coping 10GB file from NFS mount to "/" this is the same VM image which is showing problem in the attached graphics)
> 
> now copying same VM from "/" to same NFS mount point.
> 
> root at bull:/nfscom/images# rsync --progress /vm-1009-disk-1.raw /nfscom/images/
> vm-1009-disk-1.raw
> 607682560 5% 63.71MB/s 0:02:35
> 
> you can see my read and writes are working-great from the console but when it come to VM i am facing issues inside VM. 
> 
> actually i have asked this question few weeks ago. some one suggested me in the forum to buy a SSD for ZIL so it took me a while and i bought even two SSDs 1 for Level 2 Arch and 1 for ZIL. but still i am standing at the same point. 
> 
> Can anyone please tell me what mistake i am doing here.
> 
> even i tried FreeNas with same ZFS config i am facing same issue.
> 
> however when using Same NFS with Virtualbox in ubuntu 12.x it is doing fine. 
> 
> i tried any available HD type and all the modes available in proxmox, such as "no cache" "sync" write through" on both raw and qemu drive types but nothing help. 
> 
> i dont know where i am doing wrong. 
> 
> please help me out. i am very near to bang my head :).
> 
> !DSPAM:527a5d7e152822157475998! 
> 
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-- 
Hilsen/regards
Michael Rasmussen
 

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