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
Citējot Vijay Bellur <vbellur@redhat.com> : 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?