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Hi. Is not .raw or .qcow2. Is ZFS.

Hi. Thank you for the answer. The io_uring is not designed for openzfs (default used by proxmox) and does not benefit from performance. https://github.com/openzfs/zfs/issues/8716 Have other problems pointed on this email: io_uring and POSIX read-write concurrency guarantees...

Observations On my servers, I work with NVME, ZFS, and Windows and Linux guest machines. Especially on old Linuxes (like Suse Linux Enterprise 12 SP4), I experienced 3 major problems: 1. After a VM backup, the IBM DB2 got corrupted. Nobody was using it at the moment. 2. During a backup from...

Hi. Can I have multiple HA-Clusters and one qdevice for all ?. Or two qdevices for 10 clusters for example.

Does somebody know pvesr run --id id-jobid can use other socket for lock ?.

Above i shared my script in bash. The copy key is because the other place is runing a proxmox (second) and IP is dynamic. So, o connect, accept the new fingerprint and connect. I test the connectio before run syncoid, this is to avoid the syncoid create more then one snapshot (sometimes he...

Exist some shell commands to manually replication?

Hi. Have somewhere where I can manually edit the time to replicate? In past versions, I use zfsnap to sync. I make a script that generates a snapshot and send it. Is a loop. No data loss in 3 years. Now I use the proxmox cluster with replication, but with 1 minute I can have data loss. How I...

Exists a bug on 7.4 when Windows use Virtio SCSI. If you read on Events you will see 129 Event. https://forum.proxmox.com/threads/7-4-vs-7-3-stability-issues-on-new-version.125633/#post-547964

Hi. Check if the machine as scsi adapter on it. If yes, change to virtio-blk and test again.

Today the same problem. But looking in to events i found the problem. Event 129 or is the same here https://forum.proxmox.com/threads/windows-server-2019-vioscsi-warning-129-locking-up-data-drive.121936/ Possible Bug from qemu ?.

I updated it to 6.2. My impression is a speed-up to the VM. The hv-tlbflush back to work. Tomorrow I will see how is working when will be busy. If everything ok, at the end of the week I will give the feedback.

Hi. I installed 7.4 and all updates are installed. Some problems were found. Windows virtual machines don´t start anymore when using hv-tlbflush. Today I experienced a Windows 2012r2 vm freeze (crtl+alt+del don´t give me a prompt to log in but the mouse was working ok). Qemu Agent stopped...

But it is a sign that virtual memory is not being returned when no longer used. My server has just 24% of ram memory usage. Is not make sense to have such a larger size.

pmap 2318967| tail -n 1 total 14259156K

But how about the resources ? I have a vm with 8GB ram. The qemu running this virtual machine is occupying 13.9GB (81 days up). Is almost 73% more. My impression is fragmentation.

Yes, o look at it. Some windows virtual machines (big ones like 30-40 cpus) the BALLOON/guest service stop. Another thing is about some database virtual machines: the recommendation is to turn off the ballon, fixing to a static memory size. For last, in a reboot, the KSM needs some time to...

The pointed problem was solved. The VM allocates more memory than expected and in some way is unpredictable when we need to partition the ram memory resource. A suggestion is in apt install have the qemu-jemalloc version. The jemalloc libs can be redistributed without any problems in the...

Hi. Have some way to active jemalloc to qemu on proxmox ?. Best regards.

Hi. The answer is cpu * 100. Best regards.