I've got the same issue using the same versions as Korsaks, using CentOS 6.5, too. I could launch vms with gluster block backend driver using the standard package of libvirt from centos repo. but ovirt does not run the VM with the qemu GFAPI integration, the path of the disk using the fuse mount. <disk type='file' device='disk' snapshot='no'> <driver name='qemu' type='raw' cache='none' error_policy='stop' io='threads'/> <source file='/rhev/data-center/mnt/glusterSD/localhost:VMDATA/0add493f-0a7f-4b32-bcd5-ff25ca504b8b/images/68dbbc67-ea24-45a9-8727-4f85d100d1bb/8fe386f7-2aeb-43c2-bcb0-f76829c876b4'> <seclabel model='selinux' relabel='no'/> </source> <target dev='vda' bus='virtio'/> <serial></serial> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> or am i wrong? On Mon, May 12, 2014 at 7:41 AM, Vadims Korsaks <truckk@inbox.lv> wrote:
Underlying FS is XFS GlusterFS - glusterfs-3.5.0-2.el6 I'm using CentOS, if this is problem could RHEL packages be used? why CentOS packages are compiled without native glusterfs support?
Citējot Paul Robert Marino <prmarino1@gmail.com> :
What's the underlying filesystem for gluster is it XFS? What version of gluster are you using? What distro are you using and if its not RHEL or Fedora are you using a version of QEMU with gluster support compiled in keep in mind the versions with CentOS and Scientific Linux do not include Gluster native support compiled in.
-- Sent from my HP Pre3
On May 11, 2014 5:40, Vadims Korsaks <truckk@inbox.lv> wrote:
Citējot Vijay Bellur <vbellur@redhat.com> :
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?
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