[ovirt-users] Re: Sparse VMs from Templates - Storage issues

So, I did more digging and now I know how to reproduce it. I created a VM and added a disk on local ssd using scratchpad hook, formatted and mounted this scratchdisk. Now, when I try to do heavy IO on this scratchdisk on local ssd, like, dd if=/dev/zero of=/mnt/scratchdisk/test bs=1M count=1,

[ovirt-users] Re: Sparse VMs from Templates - Storage issues

Another option with (still tech preview) is Managed Block Storage (Cinder based storage). It still tech preview in 4.4 ?? -Original Message- From: users-boun...@ovirt.org On Behalf Of Nir Soffer Sent: Wednesday, August 11, 2021 4:26 AM To: Shantur Rathore Cc: users ; Roman

[ovirt-users] oVirt 4.4.8 Async update #4

oVirt 4.4.8 Async update #4 On September 23rd 2021 the oVirt project released an async update to the following packages: - ovirt-engine 4.4.8.6 Fixing the following bugs: Bug 2005221 - Cluster compatibility version upgrade from 4.5 to

[ovirt-users] Re: VM hanging at sustained high throughput

I replaced the SSD intent log drive with an NVME drive, and the system is much more stable now. *David Johnson* *Director of Development, Maxis Technology* 844.696.2947 ext 702 (o) | 479.531.3590 (c)

[ovirt-users] Re: VM hanging at sustained high throughput

I see the same issue in local scratch disk with scratchpad. I think qemu should block the io rather than pausing the VM. On Thu, Sep 23, 2021 at 4:06 PM David Johnson wrote: > I replaced the SSD intent log drive with an NVME drive, and the system is > much more stable now. > > *David Johnson* >

[ovirt-users] Re: VM hanging at sustained high throughput

What happens if you define a tmpfs and then create the qemu disk ontop of that ramdisk.Does qemu hang again ? Best Regards,Strahil Nikolov On Thu, Sep 23, 2021 at 18:25, Shantur Rathore wrote: ___ Users mailing list -- users@ovirt.org To

[ovirt-users] Re: Hosted Engine cluster version compatib.

> On 23. 9. 2021, at 19:35, Gianluca Cecchi wrote: > > On Thu, Sep 23, 2021 at 7:29 PM Diggy Mc > wrote: > I just upgraded the HE to 4.4.8.6 and rebooted it. I still cannot upgrade > the cluster compatibility level. Cannot edit properties of the HE either. > > >

[ovirt-users] Re: Hosted Engine cluster version compatib.

I just upgraded the HE to 4.4.8.6 and rebooted it. I still cannot upgrade the cluster compatibility level. Cannot edit properties of the HE either. Error I receive when trying to update the compatibility level: Error while executing action: Cannot update cluster because the update triggered

[ovirt-users] Re: Hosted Engine cluster version compatib.

The only VM that my cluster compatibility upgrade complains about is "HostedEngine". I'm not about to test my SQL knowledge by writing my own SQL command and I see no reason to touch VMs that don't upset the cluster upgrade. Can you please provide a SQL command that corrects ONLY the

[ovirt-users] Re: why cannot set the power management proxy server ?

I set lanplus=1, and then it ok. What’s meaning of it ? From: Strahil Nikolov Sent: Friday, September 24, 2021 3:13 AM To: Tommy Sway Subject: Re: [ovirt-users] why cannot set the power management proxy server ? Try adding 'lanplus=0' into the options. Best Regards,

[ovirt-users] Re: Hosted Engine cluster version compatib.

On Thu, Sep 23, 2021 at 7:29 PM Diggy Mc wrote: > I just upgraded the HE to 4.4.8.6 and rebooted it. I still cannot upgrade > the cluster compatibility level. Cannot edit properties of the HE either. > > If I understood correctly, the fix is in the sense that if not already updated to 4.4.8,

[ovirt-users] Re: about the power management of the hosts

When systems go 'crazy' there is no guarantee that they will be completely unresponsive. HA VMs should be fine, but regular VMs won't be restarted as the engine won't know if the host is dead or not (and no fencing is configured to guarantee that). Also, storage tasks could fail if that host is

[ovirt-users] About the vm memory limit

I would like to ask if there is any limit on the memory size of virtual machines, or performance curve or something like that? As long as there is memory on the physical machine, the more virtual machines the better? In our usage scenario, there are many virtual machines with databases, and

[ovirt-users] Re: VM hanging at sustained high throughput

On Thu, Sep 23, 2021 at 8:20 PM Strahil Nikolov via Users wrote: > > What happens if you define a tmpfs and then create the qemu disk ontop of > that ramdisk. > Does qemu hang again ? It works fine. Cannot reproduce the issue > > Best Regards, > Strahil Nikolov > > On Thu, Sep 23, 2021 at