The engine version is 4.3.9.4-1.el7

I have 2 simple glusterfs, a volume with one brick gfs1 with an old version of gluster (3.7.6) and a volume with one brick gfs2 with version 6.8

2 hosts, node3 is up to date, node 2 is not up to date:

RHEL - 7 – 7.1908.0.el7.centos
CentOS Linux 7 (Core)
3.10.0 – 1062.18.1.el7.x86_64
2.12.0 – 33.1.el7_7.4
libvirt-4.5.0-23.el7_7.6
vdsm-4.30.43-1.el7
0.14.0 – 7.el7
glusterfs-6.8-1.el7
librbd1-10.2.5-4.el7
openvswitch-2.11.0-4.el7

gfs1 has 3 nic's gigabit in mode 802.3ad

gfs2 has 4 nic's gigabit in mode 802.3ad

A VM performes better in node3/gfs1:

De: "Strahil Nikolov" <hunter86_bg@yahoo.com>
Para: suporte@logicworks.pt
Cc: "users" <users@ovirt.org>
Enviadas: Domingo, 25 De Outubro de 2020 19:58:12
Assunto: Re: [ovirt-users] Improve glusterfs performance

It seems that your e-mail went to the spam.

I would start with isolating the issue ?
1. Is this a VM specific issue or a more-wide issue.
- Can you move another VM on that storage domain and verify performance ?
- Can you create/migrate same OS-type VM and check performance?
- What about running a VM with different version of Windows or even better -> Linux ?


Also I would check the systems from bottom up.
Check the following:
- Are you using Latest Firmware/OS updates for the Hosts and Engine ?
- What is your cmdline :
cat /proc/cmdline
- Tuned profile
- Are you using a HW controller for the Gluster bricks ? Health of controller and disks ?
- Is the FS aligned properly to the HW controller (stripe unit and stripe width )? More details on https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5/html-single/administration_guide/index#Hardware_RAID

- FS Fragmentation ? Is your FS full ?

- Gluster volume status ? Client count ? (for example: gluster volume status all client-list)
- Gluster version, cluster.op-version and cluster.max-op-version ?

- If your network is slower than the bricks' backend (disks faster than network) , you can set cluster.choose-local to 'yes'

- Any errors and warnings in the gluster logs ?


Best Regards,
Strahil Nikolov





В четвъртък, 22 октомври 2020 г., 13:59:04 Гринуич+3, <suporte@logicworks.pt> написа:





Hello,

For example, a window machine runs to slow, usually the disk is allways in 100%
The group virt settings is this?:
performance.quick-read=off
performance.read-ahead=off
performance.io-cache=off
performance.low-prio-threads=32
network.remote-dio=enable
features.shard=on
user.cifs=off
client.event-threads=4
server.event-threads=4
performance.client-io-threads=on


________________________________
De: "Strahil Nikolov" <hunter86_bg@yahoo.com>
Para: "users" <users@ovirt.org>, suporte@logicworks.pt
Enviadas: Quarta-feira, 21 De Outubro de 2020 19:22:14
Assunto: Re: [ovirt-users] Improve glusterfs performance

Usually, oVirt uses the 'virt' group of settings.

What are you symptoms ?

Best Regards,
Strahil Nikolov






В сряда, 21 октомври 2020 г., 16:44:50 Гринуич+3, suporte@logicworks.pt <suporte@logicworks.pt> написа:





Hello,

Can anyone help me in how can I improve the performance of glusterfs to work with oVirt?

Thanks

--
________________________________
Jose Ferradeira
http://www.logicworks.pt
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