Re: [External] : Re: about the hugepage setting of the KVM server
by Tommy Sway
I use the ovirt-node, and I configured HUGEPAGE on the VM, and does not
configure the HUGEPAGE on the KVM host.
The THP I don't configure anything about it, and after configure the
HUGEPAGE on the vm, there is no report.
I don't know which method is the best.
From: Marcos Sungaila <marcos.sungaila(a)oracle.com>
Sent: Thursday, August 26, 2021 9:13 PM
To: Tommy Sway <sz_cuitao(a)163.com>; users(a)ovirt.org
Subject: RE: [External] : [ovirt-users] Re: about the hugepage setting of
the KVM server
Hi Tommy,
I have no simple answer to your question since I did not need this before,
but some questions may help us understand how it is currently working.
1st- Are you using an ovirt-node or an OS+vdsm as a hypervisor?
2nd- Did you enabled huge pages on the VM OS?
3rd- Did you check on the hypervisor OS if transparent hugepages (THP) is
enabled? And if, after enabling/configuring hugepages in the VM, it is
reporting hugepages are in use in the host?
Marcos
From: Tommy Sway <sz_cuitao(a)163.com <mailto:sz_cuitao@163.com> >
Sent: quinta-feira, 26 de agosto de 2021 04:49
To: users(a)ovirt.org <mailto:users@ovirt.org>
Subject: [External] : [ovirt-users] Re: about the hugepage setting of the
KVM server
Anyone can help me ?
From: users-bounces(a)ovirt.org <mailto:users-bounces@ovirt.org>
<users-bounces(a)ovirt.org <mailto:users-bounces@ovirt.org> > On Behalf Of
Tommy Sway
Sent: Thursday, August 26, 2021 12:27 AM
To: users(a)ovirt.org <mailto:users@ovirt.org>
Subject: [ovirt-users] about the hugepage setting of the KVM server
Hi:
I am running virtual machines on the KVM servers of oVirt env. The virtual
machine is running database, which needs to set the memory huge page on the
OPERATING system of the virtual machine.
If I need to set the huge page on the VIRTUAL machine, do I also need to set
huge page on the KVM physical machine? Or just on the virtual machine?
What best practices do you recommend?
Thank you very much!
3 years, 4 months
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Unable to export VM from data storage domain.
by Diggy Mc
I'm running oVirt 4.4.4 with two data storage domains. One domain is where the production VMs run. The second domain is where I make backup copies of the VMs in the event of problems with the main production VMs. I make backups using the export option from the GUI's dropdown list.
I just now tried to "restore" a backup copy via the export function and get an error. In fact, I get errors trying to export (import to my original data domain) any of the VMs that were exported to my backup data domain. My backup domain is a DATA domain and not an EXPORT domain.
The exact error is:
Export VM Failed
[Cannot add VM. Cannot find a disk profile defined on storage domain 246c69e9-6f16-489f-8022-8613f6c1c22a.]
Is this a bug or am I doing something wrong? Help is needed urgently. In advance, thank you.
3 years, 4 months
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