<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Looking for some guidance,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a cluster set up with three servers for testing. I have two Gluster volumes running, one is distributed replicate (gv01) the other is just distributed (gv02). For gv01, I have two disks on each server setup as bricks. The other volume, gv02 has a single disk on each server as a brick. I am running oVirt and have tied these volumes into it. I have three VM’s created and running through oVirt, two using the gv02 and the other using gv01. If I run the VM on the same server the first brick of the volume is set up, the speeds are +100mb/s. If I then move the VM to another server, the speeds drop down to under 10mb/s. The command I am using to test is as follows:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>dd if=/dev/zero of=test bs=1M count=500 conv=fdatasync<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have set up the volume to report out “debug” mode, and this keeps popping up, does it have something to do with the slow speeds:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>[2014-09-03 23:52:02.301568] D [fuse-bridge.c:48:fuse_invalidate] 0-fuse: Invalidate inode id 140382182774028.<o:p></o:p></p><p class=MsoNormal>[2014-09-03 23:52:17.776083] D [client-handshake.c:185:client_start_ping] 0-gv02-client-0: returning as transport is already disconnected OR there are no frames (0 || 0)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Gluster volume options are as follows:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>[root@u6 ~]# gluster volume info<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Volume Name: gv01<o:p></o:p></p><p class=MsoNormal>Type: Distributed-Replicate<o:p></o:p></p><p class=MsoNormal>Volume ID: 0fa1a3e9-12b1-4a21-9310-4e27bed55b54<o:p></o:p></p><p class=MsoNormal>Status: Started<o:p></o:p></p><p class=MsoNormal>Number of Bricks: 3 x 2 = 6<o:p></o:p></p><p class=MsoNormal>Transport-type: tcp<o:p></o:p></p><p class=MsoNormal>Bricks:<o:p></o:p></p><p class=MsoNormal>Brick1: u5:/export/sdb1<o:p></o:p></p><p class=MsoNormal>Brick2: u6:/export/sdb1<o:p></o:p></p><p class=MsoNormal>Brick3: u9:/export/sdb1<o:p></o:p></p><p class=MsoNormal>Brick4: u5:/export/sdc1<o:p></o:p></p><p class=MsoNormal>Brick5: u6:/export/sdc1<o:p></o:p></p><p class=MsoNormal>Brick6: u9:/export/sdc1<o:p></o:p></p><p class=MsoNormal>Options Reconfigured:<o:p></o:p></p><p class=MsoNormal>performance.write-behind-window-size: 512MB<o:p></o:p></p><p class=MsoNormal>performance.read-ahead: off<o:p></o:p></p><p class=MsoNormal>diagnostics.client-log-level: DEBUG<o:p></o:p></p><p class=MsoNormal>diagnostics.latency-measurement: on<o:p></o:p></p><p class=MsoNormal>performance.cache-size: 1GB<o:p></o:p></p><p class=MsoNormal>performance.io-thread-count: 64<o:p></o:p></p><p class=MsoNormal>network.remote-dio: enable<o:p></o:p></p><p class=MsoNormal>user.cifs: disable<o:p></o:p></p><p class=MsoNormal>auth.allow: 162.x.x.*<o:p></o:p></p><p class=MsoNormal>storage.owner-gid: 36<o:p></o:p></p><p class=MsoNormal>storage.owner-uid: 36<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Volume Name: gv02<o:p></o:p></p><p class=MsoNormal>Type: Distribute<o:p></o:p></p><p class=MsoNormal>Volume ID: 33dea48e-4754-42a9-aeee-96a99c407924<o:p></o:p></p><p class=MsoNormal>Status: Started<o:p></o:p></p><p class=MsoNormal>Number of Bricks: 3<o:p></o:p></p><p class=MsoNormal>Transport-type: tcp<o:p></o:p></p><p class=MsoNormal>Bricks:<o:p></o:p></p><p class=MsoNormal>Brick1: u5:/export/sdd1<o:p></o:p></p><p class=MsoNormal>Brick2: u6:/export/sdd1<o:p></o:p></p><p class=MsoNormal>Brick3: u9:/export/sdd1<o:p></o:p></p><p class=MsoNormal>Options Reconfigured:<o:p></o:p></p><p class=MsoNormal>cluster.choose-local: true<o:p></o:p></p><p class=MsoNormal>diagnostics.client-log-level: DEBUG<o:p></o:p></p><p class=MsoNormal>storage.owner-gid: 36<o:p></o:p></p><p class=MsoNormal>storage.owner-uid: 36<o:p></o:p></p><p class=MsoNormal>auth.allow: 162.x.x.*<o:p></o:p></p><p class=MsoNormal>user.cifs: enable<o:p></o:p></p><p class=MsoNormal>nfs.disable: off<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Why are the speeds so slow?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Chris<o:p></o:p></p></div></body></html>