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Tnx for answer. I will use such options only for non production setups. :-)

Try something like: qm migrate 31337 vps2 --targetstorage zfs1-vps2 --online --with-local-disks

Hi guys, i have two pools, one HDD and one SSD. I want to speedup HDD pool by using zfs special device. As there is no disk space on SSDs, to create new partitions, I wonder, can I just create a new ZVOL and use it as a special device for HDD pool. Something like: zfs create -s -V 42455040k...

Bump.

Raid controllers are not expensive now-a-days. Well at least not what I buy, on second hand market.

If you want performance with current setup and do not need VM (live) migration or quick migration or replication, just drop ZFS and go with thinLVM. It is much much faster. Otherwise, you can look into ZFS a bit more. Maybe add a mirrored special and striped log device via PCI U.2 or M.2 pair of...

Hi guys, i have a few different ZFS disk pools in the same server. Some are NVMe, some SSD, some HDD. I see the IOWAIT value in PVE graphs, as well as with top command. However I have no idea how to get it for certain ZFS pool, do you? The issue being, that I do not care for high IOWAIT on...

Hi. Looking at: ARC size (current): 100.2 % 20.0 GiB Target size (adaptive): 100.0 % 20.0 GiB Min size (hard limit): 95.3 % 19.1 GiB Max size (high water)...

Hi. How do you guys monitor backup system (with Nagios compatible plugins)? Now that we are switching to PBS, I monitor for failed backups by looking at the failed backup tasks with pvesh get /nodes/XXX/tasks --typefilter vzdump --errors or by parsing system logs for erros on PVE hosts. Is...

Because it is in BETA?

OK, there is a bug in Qemu Guest Agent or in kernel, that makes VMs lock up (IO operations are halted but not reported back or not all filesystems are halted). I noticed the error goes away once one stops using tmpfs (just unmounts it). Hopefully someone fixes it. You can edit the vm conf...

Please leave qemu agents disabled with VM options and let it run for a while, so we can confirm my assumption. Report back, if you get any more issues or if it works. Then we can find a suitable long term solution.

Looks like your VMs are freezing on: ERROR: VM 3019 qmp command 'guest-fsfreeze-thaw' failed - got timeout Sadly you did not answer my question about tmp or. i did not see it (have no time for detailed reading). Can you show me "df -h" from inside a Linux machine, that freezes on backup? As a...

I need live migration, so lvm is not an option. :-/

Hi, I did a few benchmarks on latest PM 6 with ZFS. I wonder why does a simple dd write inside KVM VM or on host eat 20% of E5-2690v2 CPU? NAME STATE READ WRITE CKSUM rpool...

No1 can help you when you do not provide enough detail. Are these Linux VMs with /tmp as tmpfs?

I like this backup system. It's a nice replacement for bash scripts (zfs snapshots and diff sends) I'm using. I would like to start using it in our new production cluster. Or must i go back to zfs sending snapshots bash scripts? :-) What do you guys think?

Tnx for hints. I do have only templates for VMs and PBS on PVE, so it's fine. And I get another quorum vote. :-)

Also I choose "DatastorePowerUser" instead of your suggestion as I believe PVE should have the ability to remove old backups and I think it will.

Than you for your answers. However last answer is not clear to me. Please confirm, that there is no issue, if a PVE and PBS run on the same host and PVE has this PBS as a backup target as well.