[ovirt-users] Re: bond or different networks for frontend and backend

2020-11-24 Thread Strahil Nikolov via Users
You can find details here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-using_channel_bonding 1 or layer3+4 — Uses upper layer protocol information (when available) to generate the hash. This allows for traffic to a particular network peer to

[ovirt-users] Re: bond or different networks for frontend and backend

2020-11-24 Thread Strahil Nikolov via Users
If I had 4 x 1GBE , I would consider LACP with hashing on layer 3+4. For production use, I would go with 10GBE at least. Best Regards, Strahil Nikolov В вторник, 24 ноември 2020 г., 10:40:22 Гринуич+2, jb написа: Hello, here in the description

[ovirt-users] Re: Unable to move or copy disks

2020-11-22 Thread Strahil Nikolov via Users
No, but keep an eye on you "/var/log" as debug is providing a lot of info. Usually when you got a failure to move the disk, you can disable and check the logs. Best Regards, Strahil Nikolov В неделя, 22 ноември 2020 г., 21:12:26 Гринуич+2, написа: Do I need to restart gluster

[ovirt-users] Re: Unable to move or copy disks

2020-11-21 Thread Strahil Nikolov via Users
You still haven't provided debug logs from the Gluster Bricks. There will be always a chance that a bug hits you ... no matter OS and tech. What matters - is how you debug and overcome that bug. Check the gluster brick debug logs and you can test if the issue happens with an older version.

[ovirt-users] Re: User portal and DNS entries removal

2020-11-21 Thread Strahil Nikolov via Users
Have you thought to use a vdsm hook that executes your logic once a VM is removed ? This way users won't have the ability to alter the DNS records themselves ,which is way more secure and reliable. Best Regards, Strahil Nikolov В събота, 21 ноември 2020 г., 10:26:45 Гринуич+2, Nathanaël

[ovirt-users] Re: Unable to move or copy disks

2020-11-20 Thread Strahil Nikolov via Users
I can recommend you to: - enable debug level of gluster's bricks - try to reproduce the issue I had similar issue with gluster v6.6 and above. Best Regards, Strahil Nikolov В петък, 20 ноември 2020 г., 23:35:14 Гринуич+2, написа: I tried to move the VM disk with the VM up I also

[ovirt-users] Re: Unable to move or copy disks

2020-11-20 Thread Strahil Nikolov via Users
Can you try a live migration ? I got a similar case and the live migration somehow triggered a fix. Best Regards, Strahil Nikolov В петък, 20 ноември 2020 г., 21:04:13 Гринуич+2, написа: Hi, I was trying to move a disk between glusters domain storage without success. # gluster

[ovirt-users] Re: How to create a backup in event of hardware failure of a single hosted engine?

2020-11-18 Thread Strahil Nikolov via Users
What are you trying to achive ? Best Regards, Strahil Nikolov В сряда, 18 ноември 2020 г., 13:40:18 Гринуич+2, ernestclydeac...@gmail.com написа: Hello Alex, How do i prepare the gluster volume as the gluster volume is also hosted on the 1st baremetal, can you elaborate this setup?

[ovirt-users] Re: Migration VM

2020-11-18 Thread Strahil Nikolov via Users
Once the vm fails, you can check in the host's vdsm log the whole xml file. Can you share that ? Best Regards, Strahil Nikolov В сряда, 18 ноември 2020 г., 11:31:55 Гринуич+2, tiziano.paci...@par-tec.it написа: Hi, I installed a new server, using the ovirt iso, with the target of

[ovirt-users] Re: Hosted Engine can't migrate

2020-11-18 Thread Strahil Nikolov via Users
Hi Bradley, usually this is not supposed to happen. I can propose you a fast fix: - Set a node into maintenance (via the UI) and then from the "Installation" drop down menu (upper right) click "reinstall" There is a tab for the HostedEngine and you have to mark it as deployed/installed If it

[ovirt-users] Re: Found a host rebooting - ways to watch?

2020-11-18 Thread Strahil Nikolov via Users
I would recommend you to check this one:  https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/chap-event_notifications Best Regards, Strahil Nikolov В вторник, 17 ноември 2020 г., 22:00:08 Гринуич+2, Chris Adams написа: I just noticed

[ovirt-users] Re: Really slow manager node

2020-11-16 Thread Strahil Nikolov via Users
Can you check if you got any errors like :  java.lang.OutOfMemoryError: Java heap space If yes, you can increase the JAVA HEAP values (but will be overwritten on next upgrade). According to https://access.redhat.com/articles/1256093 , you can increase the JAVA heap size by: Create a conf under 

[ovirt-users] Re: easy way to migrate to new engine

2020-11-16 Thread Strahil Nikolov via Users
Actually you can import the NFS, but all VM disks should be on that NFS and the VM must be stopped.Also , don't forget the template (if you used template) - it also must be on the NFS. Then importing is like a piece of cake. Best Regards, Strahil Nikolov В понеделник, 16 ноември 2020

[ovirt-users] Re: Problem with Cluster-wise BIOS Settings in oVirt 4.4

2020-11-16 Thread Strahil Nikolov via Users
First , you need to set an alias for virsh like this one: alias virsh='virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf' Next, you need to check with virsh if the HostedEngine VM is available (as you need it's config). If not , you can check the vdsm.log for the full

[ovirt-users] Re: Root Password Reset

2020-11-16 Thread Strahil Nikolov via Users
Can you reach the Engine system via ssh (as root) ? Is it HostedEngine or a separate Engine ? Best Regards, Strahil Nikolov В понеделник, 16 ноември 2020 г., 11:32:39 Гринуич+2, ilird...@live.com написа: Hello! I'm new to oVirt, one of my customers has a 2 node (cluster) of oVirt

[ovirt-users] Re: Cannot copy or move disks

2020-11-15 Thread Strahil Nikolov via Users
Most probably a gluster bug. Best Regards, Strahil Nikolov В неделя, 15 ноември 2020 г., 22:31:24 Гринуич+2, supo...@logicworks.pt написа: So, you think it's really a bug? De: "Nir Soffer" Para: supo...@logicworks.pt Cc: "users" , "Sahina Bose" ,

[ovirt-users] Re: Cannot copy or move disks

2020-11-15 Thread Strahil Nikolov via Users
Do the files really exist ? Any heals pending ? Best Regards, Strahil Nikolov В неделя, 15 ноември 2020 г., 16:24:48 Гринуич+2, supo...@logicworks.pt написа: Here it is: # sudo -u vdsm /usr/bin/qemu-img convert -p -t none -T none -f raw -O raw

[ovirt-users] Re: Cannot copy or move disks

2020-11-14 Thread Strahil Nikolov via Users
What happens when you run this command (from the SPM Host): sudo -u vdsm /usr/bin/qemu-img convert -p -t none -T none -f raw -O raw /rhev/data-center/mnt/glusterSD/node1-teste.aclou

[ovirt-users] Re: ovirt glusterfs

2020-11-13 Thread Strahil Nikolov via Users
It clearly indicates the problem - enable SELINUX. Best Regards, Strahil Nikolov В петък, 13 ноември 2020 г., 17:08:57 Гринуич+2, написа: Hello, I try use Gluster deploymont. I've the message error: failed: [llrovirttest02.in2p3.fr] (item={u'path': u'/gluster_bricks/engine',

[ovirt-users] Re: Old and new hardware mix

2020-11-12 Thread Strahil Nikolov via Users
As oVirt 4.4.X is using EL8 , you just need to install it with CentOS8 and check if everything goes well. I know that some old hardware was deprecated , but elrepo repository helps alot in such cases. Best Regards, Strahil Nikolov В четвъртък, 12 ноември 2020 г., 12:14:56 Гринуич+2,

[ovirt-users] Re: sshd_config AuthorizedKeysFile

2020-11-12 Thread Strahil Nikolov via Users
What happens when you change the default, but also add a "Match" directive overriding that option for the engine ? Best Regards, Strahil Nikolov В четвъртък, 12 ноември 2020 г., 10:01:12 Гринуич+2, Angus Clarke написа:    Hello Sharing for anyone who needs it, this was carried

[ovirt-users] Re: Deploy oVirt Engine fail behind proxy

2020-11-10 Thread Strahil Nikolov via Users
the delegate_to stanza should use the variable for the HostedEngine, but I think this one from the code should work: delegate_to: "{{ groups.engine[0] }}" @Sandro Bonazzola , Maybe we should open a feature request for allowing the installer to deploy a proxy ? I think it's quite common in

[ovirt-users] Re: Deploy oVirt Engine fail behind proxy

2020-11-10 Thread Strahil Nikolov via Users
Simeon's proposal will be valid only for the deployment of the package - and it should allow the deployment to pass. The example from the previous won't work as yum/dns is not using system proxy -> my bad I didn't realize it earlier. I guess the task for the engine to use the proxy when

[ovirt-users] Re: Deploy oVirt Engine fail behind proxy

2020-11-10 Thread Strahil Nikolov via Users
Usually when you deploy via cockpit, the last step allows you to edit the playbook (I'm not sure if it was only for gluster or overall). Otherwise, you have to find the ansible playbooks on the host where the deployment is going on . On my 4.3 host there is a directory named:

[ovirt-users] Re: VM's gone to unknown state

2020-11-10 Thread Strahil Nikolov via Users
Debugging deprecated ISO domain is not easy and actually it will be a waste of time. Is there any reason for not using Data domain for the ISO ? Usually I go to Sotrage -> Disks -> Upload -> Start. In ovirt 4.4 there will be an API for verification of ISOs , but on 4.3 I go in UI after the

[ovirt-users] Re: Deploy oVirt Engine fail behind proxy

2020-11-10 Thread Strahil Nikolov via Users
Did anyone try to define a task to deploy the variables in the HostedEngine before the task? For example (take only the task): --- - name: Deploy proxy  hosts: localhost  tasks:  - name: Deploy_proxy    blockinfile:  block:    http_proxy=http://myproxy.localdomain:3399    

[ovirt-users] Re: setting routing rules for guests?

2020-11-10 Thread Strahil Nikolov via Users
Erm... cause it tries to do one thing - Virtualization. If you need a DHCP server, deploy a VM and create the DHCP server. Best Regards, Strahil Nikolov В вторник, 10 ноември 2020 г., 08:09:57 Гринуич+2, yam yam написа: Thanks for the reply! Do you know why oVirt doesn't support

[ovirt-users] Re: setting routing rules for guests?

2020-11-09 Thread Strahil Nikolov via Users
>You mean I should define hook scripts for such network setting? and in case of using OVN, can I use direct ovn commands or related (neutron)rest API calls for it instead of vdsm hooks? At least you could try to create a vdsm hook that does whatever you want - this is just a script. >last

[ovirt-users] Re: Upgrade hyperconverged self-hosted ovirt from 4.3 to 4.4

2020-11-09 Thread Strahil Nikolov via Users
Hi, I am interested about these steps too, for a clean an straighforward procedure. Althought this plan looks pretty good, i am still wondering: Step 4 >Backup all gluster config files - could you please let me know what would be the exact location(s) of the files to be backed up ?

[ovirt-users] Re: VM's gone to unknown state

2020-11-09 Thread Strahil Nikolov via Users
Have you made any changes recently ? oVirt Engine requires key-based ssh to the Host's root user. If you hardened your hosts recently , modify your /etc/sshd/sshd_config to override that behaviour for the HostedEngine only. Also check the 'supervdsmd.service' & 'vdsmd.service' status - they

[ovirt-users] Re: setting routing rules for guests?

2020-11-09 Thread Strahil Nikolov via Users
You can use vdsm hooks to do almost everything. About the Floating IP, I keep it for VMs in the same VLAN. Best Regards, Strahil Nikolov В понеделник, 9 ноември 2020 г., 10:35:47 Гринуич+2, yam yam написа: Hello everyone! I'm wondering there is any feature like applying routing

[ovirt-users] Re: Upgrade hyperconverged self-hosted ovirt from 4.3 to 4.4

2020-11-09 Thread Strahil Nikolov via Users
Hi , I haven't done it yet, but I'm planing to do it. As I haven't tested the following, I can't guarantee that it will work: 0. Gluster snapshots on all volumes  1. Set a node in maintenance 2. Create a full backup of the engine 3. Set global maintenance and power off the current engine 4.

[ovirt-users] Re: VM's gone to unknown state

2020-11-08 Thread Strahil Nikolov via Users
Usually this happens when the engine can no longer reach the host and of course , there is no fencing mechanism to confirm that the node was rebooted. It's interesting that all VMs are in such state ... I would restart the engine itself. Best Regards, Strahil Nikolov В неделя, 8 ноември

[ovirt-users] Re: cannot live migrate the hosted engine

2020-11-07 Thread Strahil Nikolov via Users
If this is an oVIrt 4.4 , then open a bug on bugzilla.redhat.com . Best Regards, Strahil Nikolov В събота, 7 ноември 2020 г., 11:42:48 Гринуич+2, Rob Verduijn написа: Hi, Found it, The hardware is identical (3xhp microserver g10, identical disks, cpu and ram) It is a

[ovirt-users] Re: cannot live migrate the hosted engine

2020-11-06 Thread Strahil Nikolov via Users
Hi Rob, I would check the vdsm logs on the host where the HostedEngine VM was already running (source). Also , you can check the logs on the HE itself. In the UI, check the cluster cpu settings and your hosts. Is it possible that one node has newer CPU than the other ? Best Regards, Strahil

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-06 Thread Strahil Nikolov via Users
Yes, replica volume size is the size of the smallest brick. If you have 3 hosts with 3 directories called /gluster_bricks/engine/engine , you need to extend every block device that is used for mounting on /gluster_bricks/engine. Best Regards, Strahil Nikolov В петък, 6 ноември 2020 г.,

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-06 Thread Strahil Nikolov via Users
You just need to get the bricks via: gluster volume info engine Then you need to go to each server and extend the mount point to at least 61GB. Also, you need to mount and delete everything inside the content. Last issue: /usr/sbin/ovirt-hosted-engine-cleanup Best Regards, Strahil Nikolov

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-06 Thread Strahil Nikolov via Users
Cleaning up is OK, but I got no idea why it fails. What was the exact error ? Best Regards, Strahil Nikolov В петък, 6 ноември 2020 г., 12:38:03 Гринуич+2, hjadavall...@ukaachen.de написа: Dear Mr.Strahil Nikolov, Thank you once again! I tried cleaning up the storage path but

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-05 Thread Strahil Nikolov via Users
--- >Originalnachricht --Von: "Strahil Nikolov via Users" An: >"users@ovirt.org" ; "hjadavall...@ukaachen.de" >Gesendet: 05.11.2020 17:10:35Betreff: [ovirt-users] >Re: Issue with ovirt self hosted engine instalaltion 4.4> The engine volume >has

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-05 Thread Strahil Nikolov via Users
.. We have nothing found to clean-up the meta files from the glusterfs. Thanks Marcel -- Originalnachricht -- Von: "Strahil Nikolov via Users" An: "users@ovirt.org" ; "hjadavall...@ukaachen.de" Gesendet: 05.11.2020 17:10:35 Betreff: [ovirt-users] Re: Issue

[ovirt-users] Re: configuration of hyperconverged setup with ssd cache for slow drives

2020-11-05 Thread Strahil Nikolov via Users
Create a vdo device with 'emulate52' and use that for your LVM's PV. Best Regards, Strahil Nikolov В четвъртък, 5 ноември 2020 г., 18:24:32 Гринуич+2, Rob Verduijn написа: Hello, After a serious struggle I finally managed to get ovirt-hosted engine with the hyperconverged setup to

[ovirt-users] Re: Fence Agent in Virtual Environment

2020-11-05 Thread Strahil Nikolov via Users
This is just a guess , but you might be able to install fence_xvm on all Virtualized Hosts . Best Regards, Strahil Nikolov В четвъртък, 5 ноември 2020 г., 16:00:40 Гринуич+2, jb написа: Hello, I would like to build a hyperconverged gluster with hosted engine in a virtual

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-05 Thread Strahil Nikolov via Users
The engine volume has to be cleaned up . Here is mine: [root@ovirt1 ~]# df -h /rhev/data-center/mnt/glusterSD/gluster1\:_engine/ Filesystem        Size  Used Avail Use% Mounted on gluster1:/engine  100G   19G   82G  19% /rhev/data-center/mnt/glusterSD/gluster1:_engine It seems that 

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-05 Thread Strahil Nikolov via Users
I think the minimum is 60G and it seems that your deployment has failed, so can you cleanup the share and extend it to 65G ? Best Regards, Strahil Nikolov В четвъртък, 5 ноември 2020 г., 11:17:48 Гринуич+2, hjadavall...@ukaachen.de написа: Dear Mr.Strahil Nikolov, Thanks for yoor

[ovirt-users] Re: Issue with ovirt self hosted engine instalaltion 4.4

2020-11-04 Thread Strahil Nikolov via Users
When you mount the gluster volume manually and run "df -h /gluster/mount/point" , how much space does it show ? Best Regards, Strahil Nikolov В сряда, 4 ноември 2020 г., 17:48:56 Гринуич+2, hjadavall...@ukaachen.de написа: Hello, Good Day! I'm Hariharan and I'm working as System

[ovirt-users] Re: ovirt glusterfs

2020-11-03 Thread Strahil Nikolov via Users
The ansible playbook is expecting that the "/dev/sdb" (which you have defined) to be without any partitions or data. Just wipe it and try again. Best Regards, Strahil Nikolov В понеделник, 2 ноември 2020 г., 17:59:13 Гринуич+2, garcialiang.a...@gmail.com написа: Hello, I've some

[ovirt-users] Re: HCI with 5 node quest

2020-11-03 Thread Strahil Nikolov via Users
Usually it is best practice to have the cluster expanded by a multiple of '3' because the gluster volume is of type 'replica 3' or 'replica 3 arbiter 1'. Such volumes can only be expanded by 3 bricks and the best practice is to have one node per brick. Yet, the linux world gives freedom , so

[ovirt-users] Re: HCI with 5 node quest

2020-11-01 Thread Strahil Nikolov via Users
We do not know. Nodes 3,4,5 need to be in the same gluster network like 1,2,3 . Once you create your bricks (inode size >= 512) and mount them permanently, you can create an extra volume or expand the current volumes. Once you have prepared the nodes, you can add them from UI. Best Regards,

[ovirt-users] Re: Discard after Delete

2020-11-01 Thread Strahil Nikolov via Users
Where is that option ? Best Regards, Strahil Nikolov В неделя, 1 ноември 2020 г., 08:56:44 Гринуич+2, Joris DEDIEU написа: Hi list, I forgot to check "Discard after Delete" when creating a new volume. Is there a way (other than to empty the volume) to reclaim free blocks. In

[ovirt-users] Re: ovirt guest agent ubuntu 16.04.6 LTS

2020-11-01 Thread Strahil Nikolov via Users
Check if qemu-guest-agent(s) is availabile and use that instead. Best Regards, Strahil Nikolov В събота, 31 октомври 2020 г., 22:04:46 Гринуич+2, написа: What is the best way to install ovirt guest on Ubuntu 16.04.6? What I did: # apt-get install ovirt-guest-agent I changed value

[ovirt-users] Re: Training Video or document or training session

2020-10-31 Thread Strahil Nikolov via Users
The only one I know is RH318, but it is a paid one. Best Regards, Strahil Nikolov В събота, 31 октомври 2020 г., 02:03:59 Гринуич+2, i...@worldhostess.com написа: Can someone recommend a training video of some kind of step by step document to do the installation and administration

[ovirt-users] Re: Question about OVN MTU

2020-10-30 Thread Strahil Nikolov via Users
13:25:05 Гринуич+2, Dominik Holler > написа: > > > > > > > > On Thu, Oct 29, 2020 at 9:36 PM Alex K wrote: >> >> >> On Tue, Oct 27, 2020, 02:49 Strahil Nikolov via Users >> wrote: >>> Hello All, >>> >>>

[ovirt-users] Re: Question about OVN MTU

2020-10-30 Thread Strahil Nikolov via Users
;   > > > > > В петък, 30 октомври 2020 г., 13:25:05 Гринуич+2, Dominik Holler > написа: > > > > > > > > On Thu, Oct 29, 2020 at 9:36 PM Alex K wrote: >> >> >> On Tue, Oct 27, 2020, 02:49 Strahil Nikolov via Users >> wro

[ovirt-users] Re: Question about OVN MTU

2020-10-30 Thread Strahil Nikolov via Users
in 4.3.10's UI it shows 1500 :) В петък, 30 октомври 2020 г., 13:25:05 Гринуич+2, Dominik Holler написа: On Thu, Oct 29, 2020 at 9:36 PM Alex K wrote: > > > On Tue, Oct 27, 2020, 02:49 Strahil Nikolov via Users wrote: >> Hello All, >> >> I would l

[ovirt-users] Re: Question about OVN MTU

2020-10-29 Thread Strahil Nikolov via Users
Erm... noone ? Best Regards, Strahil Nikolov В вторник, 27 октомври 2020 г., 02:51:00 Гринуич+2, Strahil Nikolov via Users написа: Hello All, I would like to learn more about OVN and especially the maximum MTU that I can use in my environment. Current Setup 4.3.10 Network

[ovirt-users] Re: vdsm with NFS storage reboot or shutdown more than 15 minutes. with error failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy

2020-10-29 Thread Strahil Nikolov via Users
Thank you for your reply.     I've try setting host to maintenance and the host reboot immediately, What does vdsm do when setting host to maintenance? Thank you     Best Regards Mark Lee > From: Strahil Nikolov via Users > Date: 2020-10-27 23:44 > To: users; lifuqi...@sunyainfo.com >

[ovirt-users] Re: Add Node to a single node installation with self hosted engine.

2020-10-29 Thread Strahil Nikolov via Users
Strahil Nikolov via Users : >  Hello Gobinda,I know that gluster can easily convert distributed volume to >replica volume, so why it is not possible to first convert to replica and then >add the nodes as HCI ?Best Regards,Strahil NikolovВ вторник, 27 октомври 2020 >г., 08:20:56 Гринуич+2,

[ovirt-users] Re: Improve glusterfs performance

2020-10-28 Thread Strahil Nikolov via Users
You can change it via UI -> Hosts -> select new SPM host -> Management -> Select as SPM Best Regards, Strahil Nikolov В сряда, 28 октомври 2020 г., 19:46:14 Гринуич+2, написа: I think I have a problem in a Nic of one host. This host is the SPM That's probably why the gluster is

[ovirt-users] Re: Improve glusterfs performance

2020-10-28 Thread Strahil Nikolov via Users
The actual command is : gluster volume set help | less optimize for virt is just applying some settings optimal for virtualization tasks - you can do it on any type of volume It is up to you , the good stuff with Gluster is that you can easily scale it out and this is not so easy with

[ovirt-users] Re: Improve glusterfs performance

2020-10-27 Thread Strahil Nikolov via Users
I was left with the impression that you got 2 bricks (2 raids) on a single server. As I understand , you cannot get a 'replica 3 arbiter 1' or a 'replica 3' volumes , right ? When you create your volume , you need to use the UI's dropdown "Optimize for virt" or the command 'gluster volume

[ovirt-users] Re: Gluster Domain Storage full

2020-10-27 Thread Strahil Nikolov via Users
The default value is the one found via "gluster volume set help | grep -A 3 cluster.min-free-disk". In my case it is 10%. The best option is to use a single brick on either software/hardware raid of equal in performance and size disks. Size should be the same or gluster will write

[ovirt-users] Re: Gluster Domain Storage full

2020-10-27 Thread Strahil Nikolov via Users
Nope, oficially oVirt supports only replica 3 (replica 3 arbiter 1) or replica 1 (which actually is a single brick distributed ) volumes. If you have issues related to the Gluster Volume - liek this case , the community support will be "best effort". Best Regards, Strahil Nikolov В

[ovirt-users] Re: Improve glusterfs performance

2020-10-27 Thread Strahil Nikolov via Users
Why don't you use the devices of the 2 bricks in a single striped LV or raid0 md device ? Distributed volumes spread the files among the bricks and the performance is limited to the brick's device speed. Best Regards, Strahil Nikolov В вторник, 27 октомври 2020 г., 18:09:47 Гринуич+2,

[ovirt-users] Re: Improve glusterfs performance

2020-10-27 Thread Strahil Nikolov via Users
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 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

[ovirt-users] Re: Gluster Domain Storage full

2020-10-27 Thread Strahil Nikolov via Users
You have exactly 90% used space. The Gluster's default protection value is exactly 10%: Option: cluster.min-free-disk Default Value: 10% Description: Percentage/Size of disk space, after which the process starts balancing out the cluster, and logs will appear in log files I would recommend you

[ovirt-users] Re: vdsm with NFS storage reboot or shutdown more than 15 minutes. with error failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy

2020-10-27 Thread Strahil Nikolov via Users
When you set a host to maintenance from oVirt API/UI, one of the tasks is to umount any shared storage (incluing the NFS you got). Then rebooting should work like a charm. Why did you reboot without putting the node in maintenance ? P.S.: Do not confuse rebooting with fencing - the latter

[ovirt-users] Re: Add Node to a single node installation with self hosted engine.

2020-10-27 Thread Strahil Nikolov via Users
Hello Gobinda, I know that gluster can easily convert distributed volume to replica volume, so why it is not possible to first convert to replica and then add the nodes as HCI ? Best Regards, Strahil Nikolov В вторник, 27 октомври 2020 г., 08:20:56 Гринуич+2, Gobinda Das написа:

[ovirt-users] Re: adminstration portal wont complete load, looping

2020-10-26 Thread Strahil Nikolov via Users
I found this in the SPAM folder ... maybe it's not relevant any more. My guess is that you updated chrome recently and they changed something :) In my case (openSUSE Leap 15) , it was just an ad-blocker , but I guess your chrome version could be newer. Best Regards, Strahil Nikolov В

[ovirt-users] Re: Gluster Domain Storage full

2020-10-26 Thread Strahil Nikolov via Users
So what is the output of "df" agianst : - all bricks in the volume (all nodes) - on the mount point in /rhev/mnt/ Usually adding a new brick (per host) in replica 3 volume should provide you more space. Also what is the status of the volume: gluster volume status gluster volume info  

[ovirt-users] Question about OVN MTU

2020-10-26 Thread Strahil Nikolov via Users
Hello All, I would like to learn more about OVN and especially the maximum MTU that I can use in my environment. Current Setup 4.3.10 Network was created via UI -> MTU Custom -> 8976 -> Create on External Provider -> Connect to Physical Network So my physical connection is MTU 9000 and I have

[ovirt-users] Re: Improve glusterfs performance

2020-10-25 Thread Strahil Nikolov via Users
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

[ovirt-users] Re: Storage Domain Data (Master)

2020-10-23 Thread Strahil Nikolov via Users
Hm... interesting case. Have you tried to set it into maintenance ? Setting a domain to maintenance forces oVirt to pick another domain for master. Best Regards, Strahil Nikolov В петък, 23 октомври 2020 г., 19:34:19 Гринуич+3, supo...@logicworks.pt написа: When data (Master) is

[ovirt-users] Re: Manual VM Migration fails

2020-10-23 Thread Strahil Nikolov via Users
Can you try to set the destination host into maintenance and then 'reinstall' from the web UI drop down ? Best Regards, Strahil Nikolov В петък, 23 октомври 2020 г., 18:00:07 Гринуич+3, Anton Louw via Users написа: Apologies, I should also add that the destination node is a

[ovirt-users] Re: Gluster volume not responding

2020-10-23 Thread Strahil Nikolov via Users
Most probably , but I have no clue. You can set the host into maintenance and then activate it ,so the volume get's mounted properly. Best Regards, Strahil Nikolov В петък, 23 октомври 2020 г., 03:16:42 Гринуич+3, Simon Scott написа: Hi Strahil, All networking configs have

[ovirt-users] Re: Improve glusterfs performance

2020-10-22 Thread Strahil Nikolov via Users
Virt settings are those: [root@ovirt1 slow]# cat /var/lib/glusterd/groups/virt performance.quick-read=off performance.read-ahead=off performance.io-cache=off performance.low-prio-threads=32 network.remote-dio=enable cluster.eager-lock=enable cluster.quorum-type=auto

[ovirt-users] Re: ovirt Storage Domain Cluster Filesystem?

2020-10-22 Thread Strahil Nikolov via Users
I might be wrong, but I think that the SAN LUN is used as a PV and then each disk is a LV from the Host Perspective. Of course , I could be wrong and someone can correct me. All my oVirt experience is based on HCI (Gluster + oVirt). Best Regards, Strahil Nikolov В четвъртък, 22 октомври

[ovirt-users] Re: Unable to connect to postgres database on oVirt engine

2020-10-22 Thread Strahil Nikolov via Users
Wed, Oct 21, 2020 at 9:16 PM Strahil Nikolov via Users wrote: > I usually run the following (HostedEngine): > > [root@engine ~]# su - postgres >   > -bash-4.2$ source /opt/rh/rh-postgresql10/enable   This is applicable to 4.3, on el7. For 4.4 this isn't needed. Also, IIRC this

[ovirt-users] Re: Improve glusterfs performance

2020-10-22 Thread Strahil Nikolov via Users
I agree with Alex. Also, most of the kernel tunables proposed in that thread are also available in the tuned profiles provided by the redhat-storage-server source rpm available at ftp://ftp.redhat.com/redhat/linux/enterprise/7Server/en/RHS/SRPMS/ Usually the alignment of XFS ontop the HW raid

[ovirt-users] Re: Improve glusterfs performance

2020-10-21 Thread Strahil Nikolov via Users
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 написа: Hello, Can anyone help me in how can I improve the performance of glusterfs to work with oVirt?

[ovirt-users] Re: multiple new networks

2020-10-21 Thread Strahil Nikolov via Users
Have you checked the ovirt_host_network ansible module ? It got a VLAN example and I guess you can loop over all the VLANs. Best Regards, Strahil Nikolov В сряда, 21 октомври 2020 г., 11:12:53 Гринуич+3, kim.karga...@noroff.no написа: Hi all, We have Ovirt 4.3, with 11 hosts, and

[ovirt-users] Re: Unable to connect to postgres database on oVirt engine

2020-10-21 Thread Strahil Nikolov via Users
I usually run the following (HostedEngine): [root@engine ~]# su - postgres   -bash-4.2$ source /opt/rh/rh-postgresql10/enable   -bash-4.2$ psql engine How did you try to access the Engine's DB ? Best Regards, Strahil Nikolov В вторник, 20 октомври 2020 г., 17:00:37 Гринуич+3,

[ovirt-users] Re: Hyperconverged Gluster Deployment in cockpit with zfs

2020-10-21 Thread Strahil Nikolov via Users
The ansible role for Gluster expects raw devices and then it deploys it the conventional way (forget about ZoL with that role). I think that you can create and mount your filesystems and deploy gluster all by yourself - it's not so hard  ... Just follow the Gluster's official Docu and skip the

[ovirt-users] Re: Enable Gluster Service

2020-10-18 Thread Strahil Nikolov via Users
I would go to the UI and identify the hsot with the 'SPM' flag. Then you should check the vdsm logs on that host (/var/log/vdsm/) Best Regards, Strahil Nikolov В четвъртък, 15 октомври 2020 г., 20:19:57 Гринуич+3, supo...@logicworks.pt написа: Hello, When I  Enable Gluster Service

[ovirt-users] Re: Gluster Domain Storage full

2020-10-18 Thread Strahil Nikolov via Users
What is the output of: df -h /rhev/data-center/mnt/glusterSD/server_volume/ gluster volume status volume gluster volume info volume In the "df" you should see the new space or otherwise you won't be able to do anything. Best Regards, Strahil Nikolov В четвъртък, 15 октомври 2020 г.,

[ovirt-users] Re: Number of data bricks per oVirt HCI host

2020-10-15 Thread Strahil Nikolov via Users
>Please clarify what are the disk groups that you are referring to?  Either Raid5/6 or Raid10 with a HW controller(s). >Regarding your statement  "In JBOD mode, Red Hat support only 'replica 3' >>volumes." does this also mean "replica 3" variants ex.  >"distributed-replicate"  Nope, As far as I

[ovirt-users] Re: ovirt question

2020-10-14 Thread Strahil Nikolov via Users
Hi, I would start with  https://www.ovirt.org/documentation/installing_ovirt_as_a_self-hosted_engine_using_the_cockpit_web_interface/ . It might have some issues as 4.4 is quite fresh and dynamic, but you just need to ping the community for help over the e-mail. Best Regards, Strahil Nikolov

[ovirt-users] Re: Q: Hybrid GlusterFS / local storage setup?

2020-10-14 Thread Strahil Nikolov via Users
Hi Gilboa, I think that storage domains need to be accessible from all nodes in the cluster - and as yours will be using local storage and yet be in a 2-node cluster that will be hard. My guess is that you can try the following cheat:  Create a single brick gluster volume and do some

[ovirt-users] Re: How to make oVirt + GlusterFS bulletproof

2020-10-14 Thread Strahil Nikolov via Users
strict-o-direct just allows the app to define if direct I/O is needed and yes, that could be a reason for your data loss. The good thing is that the feature is part of the virt group and there is a "Optimize for Virt" button somewhere in the UI . Yet, I prefer the manual approach of building

[ovirt-users] Re: Number of data bricks per oVirt HCI host

2020-10-13 Thread Strahil Nikolov via Users
Imagine you got a host with 60 Spinning Disks -> I would recommend you to split it to 10/12 disk groups and these groups will represent several bricks (6/5). Keep in mind that when you start using many (some articles state hundreds , but no exact number was given) bricks , you should consider

[ovirt-users] Re: How to make oVirt + GlusterFS bulletproof

2020-10-13 Thread Strahil Nikolov via Users
One recommendation is to get rid of the multipath for your SSD. Replica 3 volumes are quite resilient and I'm really surprised it happened to you. For the multipath stuff , you can create something like this: [root@ovirt1 ~]# cat /etc/multipath/conf.d/blacklist.conf   blacklist {    wwid

[ovirt-users] Re: Ovirt 4.4/ Centos 8 issue with nfs?

2020-10-12 Thread Strahil Nikolov via Users
I have seen a lot of users to use anonguid=36,anonuid=36,all_squash to force the vdsm:kvm ownership on the system. Best Regards, Strahil Nikolov В понеделник, 12 октомври 2020 г., 21:40:42 Гринуич+3, Amit Bawer написа: On Mon, Oct 12, 2020 at 9:33 PM Amit Bawer wrote: > > > On

[ovirt-users] Re: oVirt-node

2020-10-12 Thread Strahil Nikolov via Users
Hi Badur, theoretically it's possible as oVirt is just a management layer. You can use 'virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf' as an alias of virsh and then you will be able to "virsh define yourVM.xml" & "virsh start yourVM". Also it's suitable to start a

[ovirt-users] Re: oVirt 4.4 - HA Proxy Fencing

2020-10-11 Thread Strahil Nikolov via Users
Well there are a lot of Red Hat solutions about that one. You will need a user in ovirt that will be used to restart the VMs. In my case , I called it 'fencerdrbd' and it has beed granted 'UserRole' permissions on the systems in the pacemaker cluster. Here is my stonith device , but keep in

[ovirt-users] Re: Gluster volume not responding

2020-10-11 Thread Strahil Nikolov via Users
Hi Simon, Usually it is the network, but you need real-world data. I would open screen sessions and run ping continiously . Something like this: while true; do echo -n "$(date) "; timeout -s 9 1 ping -c 1 ovirt2 | grep icmp_seq; sleep 1; done | tee -a /tmp/icmp_log Are all systems in the same

[ovirt-users] Re: too many glitches while moving storage domain

2020-10-11 Thread Strahil Nikolov via Users
Hi Jiri, I already opened an Feature request  https://bugzilla.redhat.com/show_bug.cgi?id=1881457 that is about something similar. Can you check if your case was similar and update the request ? Best Regards, Strahil Nikolov В събота, 10 октомври 2020 г., 23:48:01 Гринуич+3, Jiří Sléžka

[ovirt-users] Re: How to make oVirt + GlusterFS bulletproof

2020-10-11 Thread Strahil Nikolov via Users
Hi Jaroslaw, That point was from someone else. I don't think that gluster has a such weak point. The only weak point I have seen is the infrastructure it relies ontop and of course the built-in limitations it has. You need to verify the following: - mount options are important . Using

[ovirt-users] Re: problems installing standard Linux as nodes in 4.4

2020-10-10 Thread Strahil Nikolov via Users
I guess you tried to ssh to the HostedEngine and then ssh to the host , right ? Best Regards, Strahil Nikolov В събота, 10 октомври 2020 г., 02:28:35 Гринуич+3, Gianluca Cecchi написа: On Fri, Oct 9, 2020 at 7:12 PM Martin Perina wrote: > > > Could you please share with us all

[ovirt-users] Re: How to make oVirt + GlusterFS bulletproof

2020-10-09 Thread Strahil Nikolov via Users
Based on the logs you shared, it looks like a network issue - but it could always be something else. If you ever experience something like that situation, please share the logs immediately and add the gluster mailing list - in order to get assistance with the root cause. Best Regards, Strahil

[ovirt-users] Re: Gluster volume not responding

2020-10-08 Thread Strahil Nikolov via Users
Hi Simon, I doubt the system needs tuning from network perspective. I guess you can run some 'screen'-s which a pinging another system and logging everything to a file. Best Regards, Strahil Nikolov В петък, 9 октомври 2020 г., 01:05:22 Гринуич+3, Simon Scott написа: Thanks

[ovirt-users] Re: Gluster volume not responding

2020-10-08 Thread Strahil Nikolov via Users
ри 2020 г., 22:43:34 Гринуич+3, Strahil Nikolov via Users написа: >Every Monday and Wednesday morning there are gluster connectivity timeouts >>but all checks of the network and network configs are ok. Based on this one I make the following conclusions: 1. Issue is reoccuring 2. You

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