<div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 2, 2019 at 1:34 AM Karim Roumani <<a href="mailto:karim.roumani@tekreach.com">karim.roumani@tekreach.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Actually we have a question.<div><br></div><div>We did two tests as follows.</div><div><br></div><div>Test 1 - iSCSI target on the glusterFS server</div><div>Test 2 - iSCSI target on a separate server with gluster client</div><div><br></div><div>Test 2 performed a read speed of <1GB/second while Test 1 about 300MB/second</div><div><br></div><div>Any reason you see to why this may be the case? </div></div></blockquote><div><br><div>For Test 1 case,<span class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br><br>1. ops b/w</span><br><span class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">* </span>iscsi initiator <span class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><-></span> iscsi target <span class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">and<br>* tcmu-runner <-> gluster server<br></span><br>are all using the same NIC resource<span class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">.</span></div><div><br></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">2. Also, it might be possible <span style="font-family:Arial,Helvetica,sans-serif">that, the node might be facing high resource usage </span><span style="font-family:Arial,Helvetica,sans-serif">like cpu is high and/or memory is low, as everything is on the same node.<br><br>You can check also check gluster profile info, to corner down some of these.<br><br>Thanks!</span></div></div><div class="gmail_default" style="font-size:small">--<br>Prasanna</div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width: 0px; max-height: 0px; overflow: hidden;" src="https://mailfoogae.appspot.com/t?sender=aa3JlZW1vQGdtYWlsLmNvbQ%3D%3D&type=zerocontent&guid=ada00268-1c6b-4c47-98fb-32e56b7e31bc"><font color="#ffffff" size="1">ᐧ</font></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 1, 2019 at 1:00 PM Karim Roumani <<a href="mailto:karim.roumani@tekreach.com" target="_blank">karim.roumani@tekreach.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">Thank you Prasanna for your quick response very much appreaciated we will review and get back to you.</div></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width: 0px; max-height: 0px; overflow: hidden;" src="https://mailfoogae.appspot.com/t?sender=aa3JlZW1vQGdtYWlsLmNvbQ%3D%3D&type=zerocontent&guid=86a7aba1-174a-41f4-9fe3-499d040f7a4a"><font color="#ffffff" size="1">ᐧ</font></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 25, 2019 at 9:00 AM Prasanna Kalever <<a href="mailto:pkalever@redhat.com" target="_blank">pkalever@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">[ adding +gluster-users for archive purpose ]<br>
<br>
On Sat, Mar 23, 2019 at 1:51 AM Jeffrey Chin <<a href="mailto:jeffrey.chin@tekreach.com" target="_blank">jeffrey.chin@tekreach.com</a>> wrote:<br>
><br>
> Hello Mr. Kalever,<br>
<br>
Hello Jeffrey,<br>
<br>
><br>
> I am currently working on a project to utilize GlusterFS for VMWare VMs. In our research, we found that utilizing block devices with GlusterFS would be the best approach for our use case (correct me if I am wrong). I saw the gluster utility that you are a contributor for called gluster-block (<a href="https://github.com/gluster/gluster-block" rel="noreferrer" target="_blank">https://github.com/gluster/gluster-block</a>), and I had a question about the configuration. From what I understand, gluster-block only works on the servers that are serving the gluster volume. Would it be possible to run the gluster-block utility on a client machine that has a gluster volume mounted to it?<br>
<br>
Yes, that is right! At the moment gluster-block is coupled with<br>
glusterd for simplicity.<br>
But we have made some changes here [1] to provide a way to specify<br>
server address (volfile-server) which is outside the gluster-blockd<br>
node, please take a look.<br>
<br>
Although it is not complete solution, but it should at-least help for<br>
some usecases. Feel free to raise an issue [2] with the details about<br>
your usecase and etc or submit a PR by your self :-)<br>
We never picked it, as we never have a usecase needing separation of<br>
gluster-blockd and glusterd.<br>
<br>
><br>
> I also have another question: how do I make the iSCSI targets persist if all of the gluster nodes were rebooted? It seems like once all of the nodes reboot, I am unable to reconnect to the iSCSI targets created by the gluster-block utility.<br>
<br>
do you mean rebooting iscsi initiator ? or gluster-block/gluster<br>
target/server nodes ?<br>
<br>
1. for initiator to automatically connect to block devices post<br>
reboot, we need to make below changes in /etc/iscsi/iscsid.conf:<br>
node.startup = automatic<br>
<br>
2. if you mean, just in case if all the gluster nodes goes down, on<br>
the initiator all the available HA path's will be down, but we still<br>
want the IO to be queued on the initiator, until one of the path<br>
(gluster node) is availabe:<br>
<br>
for this in gluster-block sepcific section of multipath.conf you need<br>
to replace 'no_path_retry 120' as 'no_path_retry queue'<br>
Note: refer README for current multipath.conf setting recommendations.<br>
<br>
[1] <a href="https://github.com/gluster/gluster-block/pull/161" rel="noreferrer" target="_blank">https://github.com/gluster/gluster-block/pull/161</a><br>
[2] <a href="https://github.com/gluster/gluster-block/issues/new" rel="noreferrer" target="_blank">https://github.com/gluster/gluster-block/issues/new</a><br>
<br>
BRs,<br>
--<br>
Prasanna<br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-4672176895625293468gmail-m_-4908825780862380251gmail_signature"><div dir="ltr"><div><div dir="ltr"><p lang="en-US" style="font-size:12.8px">Thank you,</p><p lang="en-US" style="font-size:12.8px"></p><p lang="en-US" style="font-size:12.8px"><span style="font-family:Arial,sans-serif"><b><span style="background-image:initial">Karim</span> <span style="background-image:initial">Roumani</span></b><br></span><span style="font-family:Arial,sans-serif">Director of Technology Solutions</span><br></p><p lang="en-US" style="font-size:12.8px"><font face="Arial, sans-serif"><img src="http://www.portalfronthosting.com/signaturelogo.jpg"></font></p><p lang="en-US" style="font-size:12.8px"><span style="font-size:10pt">TekReach Solutions / Albatross Cloud<br></span><font color="#000000"><font face="Arial, sans-serif" size="2"><a href="tel:714-916-5677" value="+17149165677" style="color:rgb(17,85,204)" target="_blank">714-916-5677</a></font><font face="Arial, sans-serif"><br></font></font><font color="#222222"><a href="mailto:Karim.Roumani@tekreach.com" style="color:rgb(17,85,204)" target="_blank">Karim.Roumani@tekreach.com</a><br><a href="https://albatross.cloud/" style="color:rgb(17,85,204)" target="_blank">Albatross.cloud</a> - One Stop Cloud Solutions<br><a href="http://portalfronthosting.com/" target="_blank">Portalfronthosting.com</a> - Complete SharePoint Solutions</font></p></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-4672176895625293468gmail_signature"><div dir="ltr"><div><div dir="ltr"><p lang="en-US" style="font-size:12.8px">Thank you,</p><p lang="en-US" style="font-size:12.8px"></p><p lang="en-US" style="font-size:12.8px"><span style="font-family:Arial,sans-serif"><b><span style="background-image:initial">Karim</span> <span style="background-image:initial">Roumani</span></b><br></span><span style="font-family:Arial,sans-serif">Director of Technology Solutions</span><br></p><p lang="en-US" style="font-size:12.8px"><font face="Arial, sans-serif"><img src="http://www.portalfronthosting.com/signaturelogo.jpg"></font></p><p lang="en-US" style="font-size:12.8px"><span style="font-size:10pt">TekReach Solutions / Albatross Cloud<br></span><font color="#000000"><font face="Arial, sans-serif" size="2"><a href="tel:714-916-5677" value="+17149165677" style="color:rgb(17,85,204)" target="_blank">714-916-5677</a></font><font face="Arial, sans-serif"><br></font></font><font color="#222222"><a href="mailto:Karim.Roumani@tekreach.com" style="color:rgb(17,85,204)" target="_blank">Karim.Roumani@tekreach.com</a><br><a href="https://albatross.cloud/" style="color:rgb(17,85,204)" target="_blank">Albatross.cloud</a> - One Stop Cloud Solutions<br><a href="http://portalfronthosting.com/" target="_blank">Portalfronthosting.com</a> - Complete SharePoint Solutions</font></p></div></div></div></div>
</blockquote></div></div></div>