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<p>Hi,</p>
<p>Maybe you could try the new ZFS plugin which will expose native ZFS through iSCSI?</p>
<p>This also means cloning and online native zfs snapshots with raw images.</p>
<p>On 11-06-2013 16:05, Muhammad Yousuf Khan wrote:</p>
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<div>i am facing slow read and write on our new NAS. </div>
<div>here is the hardware detail.<br /><br /></div>
<div>Proxmox :</div>
<div>12GB RAM</div>
<div>Xeon 3.2 (2 processors)</div>
<div>500GB HD for Proxmox and Debian OS.<br /><br /><br /></div>
<div>Remote SAN/NAS:</div>
<div>OS : omniOS</div>
<div>RAM : 12 GB</div>
<div>FS : ZFS</div>
<div>Sharing protocol : NFS</div>
<div>Xeon 3.2 (2 processors)</div>
<div>1 SSD 60GB ARCH2 </div>
<div>1 SSD 120GB ZIL</div>
<div>3 Mix capasity HD 800GB,500GB and 1TB all are 64bit Cache. </div>
<div>ZFS RAID Type : RaidZ<br /><br /><br /></div>
<br />
<div> </div>
<div>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.<br /><br />
<div>kindly find an attach file. to see my read and write performance. </div>
in side graphs Red line is showing my copy data-to-VM and white line showing copy data-to-network.<br /><br /><br /></div>
<div>when i am copying data from terminal it is showing me good speed.</div>
<div> </div>
<div>here is the some more detail on Mount points. (output of my "df -h" command)<br /><br />10.x.x.25:/tank/VMbase 903G 2.1G 901G 1% /nfscom</div>
<div><br />---------------------------------------------------------------------------</div>
<div>here is some copy test on terminal from the nfs mount point<br /><br />root@bull:/nfscom/images/1009# rsync --progress vm-1009-disk-1.raw /<br />vm-1009-disk-1.raw<br /> 824311808 7% 70.00MB/s 0:02:18<br /><br /></div>
<div>(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)<br /><br /></div>
<div>now copying same VM from "/" to same NFS mount point.<br /><br />root@bull:/nfscom/images# rsync --progress /vm-1009-disk-1.raw /nfscom/images/<br />vm-1009-disk-1.raw<br /> 607682560 5% 63.71MB/s 0:02:35<br /><br /></div>
<div> </div>
<div>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. </div>
<div> </div>
<div>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. <br /><br />Can anyone please tell me what mistake i am doing here.<br /><br /></div>
<div>even i tried FreeNas with same ZFS config i am facing same issue.<br /><br />however when using Same NFS with Virtualbox in ubuntu 12.x it is doing fine. <br /><br /></div>
<div>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.</div>
<div><br /><br /></div>
<div>i dont know where i am doing wrong. </div>
<div><br />please help me out. i am very near to bang my head :).<br /><br /><br /></div>
<div> </div>
<div> </div>
<div><br /><br /><br /></div>
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<p> </p>
<div>
<pre>-- <br />Hilsen/regards
Michael Rasmussen</pre>
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