<div dir="ltr">I've reconfigured my setup (good succes below, but need clarity on gluster option):<div><br></div><div>Two nodes total, both running virt and glusterfs storage (2 node replica, quorum).</div><div><br></div>
<div>I've created an NFS storage domain, pointed at the first nodes IP address. I've launched a 2008 R2 SP1 install with a virtio-scsi disk, and the SCSI pass-through driver on the same node as the NFS domain is pointing at.</div>
<div><br></div><div>Windows guest install has been running for roughly 1.5 hours, still "Expanding Windows files (55%) ..."</div><div><br></div><div>top is showing:</div><div><div> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND </div>
<div> 3609 root 20 0 1380m 33m 2604 S 35.4 0.1 231:39.75 glusterfsd </div><div>21444 qemu 20 0 6362m 4.1g 6592 S 10.3 8.7 10:11.53 qemu-kvm </div></div><div><br></div><div>This is a 2 socket, 6 core xeon machine with 48GB of RAM, and 6x 7200rpm enterprise sata disks in RAID5 so I don't think we're hitting hardware limitations.</div>
<div><br></div><div>dd on xfs (no gluster)</div><div><div><br></div><div><div>time dd if=/dev/zero of=test bs=1M count=2048</div><div>2048+0 records in</div><div>2048+0 records out</div><div>2147483648 bytes (2.1 GB) copied, 4.15787 s, 516 MB/s</div>
<div><br></div><div>real<span class="" style="white-space:pre"> </span>0m4.351s</div><div>user<span class="" style="white-space:pre"> </span>0m0.000s</div><div>sys<span class="" style="white-space:pre"> </span>0m1.661s</div>
</div><div><br></div><div><br></div><div><div>time dd if=/dev/zero of=test bs=1k count=2000000</div><div>2000000+0 records in</div><div>2000000+0 records out</div><div>2048000000 bytes (2.0 GB) copied, 4.06949 s, 503 MB/s</div>
<div><br></div><div>real<span class="" style="white-space:pre"> </span>0m4.260s</div><div>user<span class="" style="white-space:pre"> </span>0m0.176s</div><div>sys<span class="" style="white-space:pre"> </span>0m3.991s</div>
</div></div><div><br></div><div><br></div><div>I've enabled <font color="#000000" face="arial, sans-serif"><span style="line-height:16.899999618530273px">nfs.trusted-sync (<a href="http://gluster.org/community/documentation/index.php/Gluster_3.2:_Setting_Volume_Options#nfs.trusted-sync">http://gluster.org/community/documentation/index.php/Gluster_3.2:_Setting_Volume_Options#nfs.trusted-sync</a>)</span></font><span style="line-height:16.899999618530273px;color:rgb(0,0,0);font-family:arial,sans-serif"> on the gluster volume, and the speed difference is immeasurable . Can anyone explain</span><span style="line-height:16.899999618530273px;color:rgb(0,0,0);font-family:arial,sans-serif"> what this option does, and what the risks are with a 2 node gluster replica volume with quorum enabled?</span></div>
<div><span style="line-height:16.899999618530273px;color:rgb(0,0,0);font-family:arial,sans-serif"><br></span></div><div>Thanks,</div></div>