Citējot "Sahina Bose" <sabose(a)redhat.com&gt;: > On 05/14/2014 02:36 PM, Vadims Korsaks wrote: >> Citējot Sahina Bose <sabose(a)redhat.com&gt; : >>> On 05/13/2014 07:27 PM, Vadims Korsaks wrote: >>>> Citējot Humble Devassy Chirammal >>>> <humble.devassy(a)gmail.com&gt; : >>>>>> Citējot Vijay Bellur <vbellur(a)redhat.com&gt; : >>>>>>> On 05/11/2014 02:04 AM, Vadims Korsaks >> wrote: >>>>>>>> HI! >>>>>>>>>>>>>>> Created 2 node setup with oVirt 3.4 and >>>>>> CentOS 6.5, for storage created >>>>>>>> 2 node replicated gluster (3.5) fs on same >>>>>> hosts with oVirt. >>>>>>>> mount looks like this: >>>>>>>> 127.0.0.1:/gluster01 on >>>>>>> /rhev/data-center/mnt/glusterSD/127.0.0.1:_gluster01 >>>>>> type fuse.glusterfs (rw,default_permissions,allow_other,max_read=131072) >>>>>>>> when i making gluster test with dd, >>>> something >>>>>> like >>>>>>>> dd if=/dev/zero bs=1M count=20000 >>>>>>> of=/rhev/data-center/mnt/glusterSD/127.0.0.1\:_gluster01/kaka >>>>>>>> i'm gettting speed ~ 110 MB/s, so this is >>>>>> 1Gbps speed of ethernet adapter >>>>>>>> but with in VM created in oVirt speed is >>>>>> lower than 20 MB/s >>>>>>>> why there is so huge difference? >>>>>>>> how can improve VMs disks speed? >>>>>>>>>>>>>> What are your gluster volume settings? >>>> Have you >>>>>> applied the following >>>>>>> performance tunables in gluster's virt >>>> profile: >>>>>>> eager-lock=enable >>>>>>> remote-dio=enable >>>>>>>>>>>>> Regards, >>>>>>> Vijay >>>>>>>>>>>> setting were: >>>>>> [root@centos155 ~]# gluster volume info >> gluster01 >>>>>> Volume Name: gluster01 >>>>>> Type: Replicate >>>>>> Volume ID: >> 436edaa3-ac8b-421f-aa35-68b5bd7064b6 >>>>>> Status: Started >>>>>> Number of Bricks: 1 x 2 = 2 >>>>>> Transport-type: tcp >>>>>> Bricks: >>>>>> Brick1: 10.2.75.152:/mnt/gluster01/brick >>>>>> Brick2: 10.2.75.155:/mnt/gluster01/brick >>>>>> Options Reconfigured: >>>>>> storage.owner-gid: 36 >>>>>> storage.owner-uid: 36 >>>>>>>>>>>>>>>> add your settings settings now it looks >>>>>>>>>>> [root@centos155 ~]# gluster volume info >> gluster01 >>>>>> Volume Name: gluster01 >>>>>> Type: Replicate >>>>>> Volume ID: >> 436edaa3-ac8b-421f-aa35-68b5bd7064b6 >>>>>> Status: Started >>>>>> Number of Bricks: 1 x 2 = 2 >>>>>> Transport-type: tcp >>>>>> Bricks: >>>>>> Brick1: 10.2.75.152:/mnt/gluster01/brick >>>>>> Brick2: 10.2.75.155:/mnt/gluster01/brick >>>>>> Options Reconfigured: >>>>>> network.remote-dio: enable >>>>>> cluster.eager-lock: enable >>>>>> storage.owner-gid: 36 >>>>>> storage.owner-uid: 36 >>>>>>>>>>>>>>>> but this didn't affected performace in any >>>> big way >>>>>> should hosts to be restarted? >>>>>>>>>> glusterfs storage domain configuration GUI got >>>> ""Optimize for virt. store" option which have to >>>> be enabled when configuring for virt store. >>>> Ref#http://www.ovirt.org/Features/GlusterFS_Storage_Domain >>>>> If the configuration is manual, you need to >>>> set the group to 'virt' as shown below >>>>> #gluster volume set VOLNAME group virt >>>>>>>>> This will enable below options on gluster >> volume : >>>>> quick-read=off >>>>> read-ahead=off >>>>> io-cache=off >>>>> stat-prefetch=off >>>>> eager-lock=enable >>>>> remote-dio=on >>>>>>>>>>>>> Can you please make sure group has set >> properly ? >>>>> Also, invoke "dd" with oflag=direct option and >>>> check whether it helps .. >>>>>>>>> --Humble >>>> tnx a lot!! now it's much better - from VM i can >>>> get dd with ~ 60 MB/s >>>> this is still ~ x2 lower than from host, but x3 >>>> better than it was before :) >>>>>>> BTW could not found "GUI got ""Optimize for virt. >>>> store" option" in oVirt 3.5 >>>>> The option "Optimize for Virt store" is >> available when you select a >>> volume in Ovirt - both as a right click menu >> option as well as a button >>> in the top sub navigation bar. >>>>> You also can check this option while creating a >> gluster volume using the >>> oVirt GUI >>>>>> i have glusterfs as my master storage, but there >> is nothing in volumes, empty. And i can't create >> gluster volume, there is no choise in Data Center >> and Volume Cluster. >> To be able to manage gluster (i.e create volume, add bricks and peer > probe hosts) from Ovirt UI, the cluster should have the "Enable gluster > service" option checked. I think you may not have enabled this when you > created the cluster. To use gluster volume as storage domain, this > option is not required. > Hope this helps. Ok, i see, tnx a lot. any chances to change this for Default Cluster, because i have self hosted engine and just 2 hosts?