Are the VM's disks located on the distributed Volume ? Best Regards, Strahil Nikolov
В вторник, 27 октомври 2020 г., 17:21:49 Гринуич+2, supo...@logicworks.pt <supo...@logicworks.pt> написа: 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: # dd if=/dev/zero of=test1.img bs=1G count=1 oflag=dsync 1+0 registos dentro 1+0 registos fora 1073741824 bytes (1,1 GB) copiados, 12,3365 s, 87,0 MB/s in node2/gfs2: dd if=/dev/zero of=test1.img bs=1G count=1 oflag=dsync 1+0 records in 1+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 51.0159 s, 21.0 MB/s For windows machine is the same. It helps if you have windows drives up to date. ________________________________ De: "Strahil Nikolov" <hunter86...@yahoo.com> Para: supo...@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, <supo...@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...@yahoo.com> Para: "users" <users@ovirt.org>, supo...@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, supo...@logicworks.pt <supo...@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 _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/KPU4QFTMUMMFGUA4PYG6624KLSHVLNX4/ _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/MP4JMRX3RUCXW45GVKIBMGAOLON4NKL2/
