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<div>You can use ctdb for nfs failover</div>
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<div>But I do want to know if we can use native glusterfs client for vmware</div>
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<div>Peter</div>
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On Aug 25, 2014, at 9:28 PM, "Chandrahasa S" <<a href="mailto:chandrahasa.s@tcs.com">chandrahasa.s@tcs.com</a>> wrote:<br>
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<div><font size="2" face="sans-serif">I am thinking to User Gluster Volume for creation of Data store in Vmware.</font>
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<font size="2" face="sans-serif">I can use NFS but I wont get HA and Load balancing like glusterfs.</font>
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<font size="2" face="sans-serif">Chandra</font> <br>
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<font size="1" color="#5f5f5f" face="sans-serif">From: </font><font size="1" face="sans-serif">"John G. Heim" <<a href="mailto:jheim@math.wisc.edu">jheim@math.wisc.edu</a>></font>
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<font size="1" color="#5f5f5f" face="sans-serif">To: </font><font size="1" face="sans-serif">Chandrahasa S <<a href="mailto:chandrahasa.s@tcs.com">chandrahasa.s@tcs.com</a>>,
<a href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a></font> <br>
<font size="1" color="#5f5f5f" face="sans-serif">Date: </font><font size="1" face="sans-serif">08/25/2014 06:49 PM</font>
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<font size="1" color="#5f5f5f" face="sans-serif">Subject: </font><font size="1" face="sans-serif">Re: [Gluster-users] Gluster for Vmware</font>
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<font size="3">Do you mean you want to mount a gluster volume on a virtual machine? You can do that the same way you'd do it on a real machine. You can probably even create a brick on a virtual machine but I don't see much point in that.
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<br>
But we regularly mount our gluster volume on virtual machines. We use debian so it's as simple as this:<br>
<br>
1. service glusterfs-server start<br>
2. mount -t glusterfs localhost:/volumename /mountpoint<br>
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<br>
</font><br>
<font size="3">On 08/25/2014 12:06 AM, Chandrahasa S wrote:</font> <br>
<font size="2" face="sans-serif">Dear All,</font><font size="3"> <br>
</font><font size="2" face="sans-serif"><br>
Is there any way to use Glusterfs volume for Vmware environment.</font><font size="3">
</font><font size="2" face="sans-serif"><br>
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<br>
Chandra.</font><font size="3"> <br>
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</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
From: </font><font size="1" face="sans-serif">Ben Turner </font><a href="mailto:bturner@redhat.com"><font size="1" color="blue" face="sans-serif"><u><bturner@redhat.com></u></font></a><font size="3">
</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
To: </font><font size="1" face="sans-serif">Juan José Pavlik Salles </font>
<a href="mailto:jjpavlik@gmail.com"><font size="1" color="blue" face="sans-serif"><u><jjpavlik@gmail.com></u></font></a><font size="3">
</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
Cc: </font><a href="mailto:gluster-users@gluster.org"><font size="1" color="blue" face="sans-serif"><u>gluster-users@gluster.org</u></font></a><font size="3">
</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
Date: </font><font size="1" face="sans-serif">08/22/2014 08:57 PM</font><font size="3">
</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
Subject: </font><font size="1" face="sans-serif">Re: [Gluster-users] Gluster 3.5.2 gluster, how does cache work?</font><font size="3">
</font><font size="1" color="#5f5f5f" face="sans-serif"><br>
Sent by: </font><a href="mailto:gluster-users-bounces@gluster.org"><font size="1" color="blue" face="sans-serif"><u>gluster-users-bounces@gluster.org</u></font></a><font size="3">
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</font><tt><font size="2"><br>
----- Original Message -----<br>
> From: "Juan José Pavlik Salles" </font></tt><a href="mailto:jjpavlik@gmail.com"><tt><font size="2" color="blue"><u><jjpavlik@gmail.com></u></font></tt></a><tt><font size="2"><br>
> To: </font></tt><a href="mailto:gluster-users@gluster.org"><tt><font size="2" color="blue"><u>gluster-users@gluster.org</u></font></tt></a><tt><font size="2"><br>
> Sent: Thursday, August 21, 2014 4:07:28 PM<br>
> Subject: [Gluster-users] Gluster 3.5.2 gluster, how does cache work?<br>
> <br>
> Hi guys, I've been reading a bit about caching in gluster volumes, but I<br>
> still don't get a few things. I set up a gluster replica 2 volume like this:<br>
> <br>
> [root@gluster-test-1 ~]# gluster vol info vol_rep<br>
> Volume Name: vol_rep<br>
> Type: Replicate<br>
> Volume ID: b77db06d-2686-46c7-951f-e43bde21d8ec<br>
> Status: Started<br>
> Number of Bricks: 1 x 2 = 2<br>
> Transport-type: tcp<br>
> Bricks:<br>
> Brick1: gluster-test-1:/ladrillos/l1/l<br>
> Brick2: gluster-test-2:/ladrillos/l1/l<br>
> Options Reconfigured:<br>
> performance.cache-min-file-size: 90MB<br>
> performance.cache-max-file-size: 256MB<br>
> performance.cache-refresh-timeout: 60<br>
> performance.cache-size: 256MB<br>
> [root@gluster-test-1 ~]#<br>
> <br>
> Then I mounted the volume with gluster client on another machine. I created<br>
> an 80Mbytes file called 80, and here you have the reading test:<br>
> <br>
> [root@gluster-client-1 gluster_vol]# dd if=/mnt/gluster_vol/80 of=/dev/null<br>
> bs=1M<br>
> 80+0 records in<br>
> 80+0 records out<br>
> 83886080 bytes (84 MB) copied, 1,34145 s, 62,5 MB/s<br>
> [root@gluster-client-1 gluster_vol]# dd if=/mnt/gluster_vol/80 of=/dev/null<br>
> bs=1M<br>
> 80+0 records in<br>
> 80+0 records out<br>
> 83886080 bytes (84 MB) copied, 0,0246918 s, 3,4 GB/s<br>
> [root@gluster-client-1 gluster_vol]# dd if=/mnt/gluster_vol/80 of=/dev/null<br>
> bs=1M<br>
> 80+0 records in<br>
> 80+0 records out<br>
> 83886080 bytes (84 MB) copied, 0,0195678 s, 4,3 GB/s<br>
> [root@gluster-client-1 gluster_vol]#<br>
<br>
You are seeing the effect of client side kernel caching. If you want to see the actual throughput for reads run:<br>
<br>
sync; echo 3 > /proc/sys/vm/drop_caches; dd blah<br>
<br>
Kernel caching happens on both the client and server side, when I want to see uncached performance I drop caches on both clients and servers:<br>
<br>
run_drop_cache()<br>
{<br>
for host in $MASTERNODE $NODE $CLIENT<br>
do<br>
ssh -i /root/.ssh/my_id root@${host} echo "Dropping cache on $host"<br>
ssh -i /root/.ssh/my_id root@${host} sync<br>
ssh -i /root/.ssh/my_id root@${host} "echo 3 > /proc/sys/vm/drop_caches"<br>
done<br>
}<br>
<br>
HTH!<br>
<br>
-b<br>
<br>
> Cache is working flawlessly, (even though that 80 Mbytes is smaller than the<br>
> min-file-size value, but I don't care about it right now) what I don't get<br>
> is where cache is being stored. Is it stored on the client side or on the<br>
> server side? According to documentation, the io-cache translator could be<br>
> loaded on both sides (client and server), how can I know where it is being<br>
> loeaded? It looks like as it was being stored locally because of the speed,<br>
> but I'd like to be sure.<br>
> <br>
> Thanks!<br>
> <br>
> --<br>
> Pavlik Salles Juan José<br>
> Blog - </font></tt><a href="http://viviendolared.blogspot.com/"><tt><font size="2" color="blue"><u>http://viviendolared.blogspot.com</u></font></tt></a><tt><font size="2"><br>
> <br>
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