Hello Fiona,
Thanks for the feedback and for the bugzilla post.
Ok, I understand that there are missing things upstream for it to be implemented in Proxmox. Hopefully it will maybe be added :)
I have a question about on-cbw-error and cbw-timeout...
I can see that many people are facing this issue and some are suggesting to use fleecing, supported by qemu.
https://www.mail-archive.com/pve-devel@lists.proxmox.com/msg09294.html
https://bugzilla.proxmox.com/show_bug.cgi?id=3086
Is that something on the roadmap ?
Really in the current state...
Once again, thank you.
It starts happening during the backup so I would guess it's more likely to be linked to the first issue you suggested, but as some VMs seems to sometimes be not able to recover after the backup, it might be worth a try to disable iothreads yes.
We use iothread for all of...
It seems this happens to almost every VM we backup this way, but others are Linux VMs and it seems they are a bit more robust about it.
I see hung tasks in the VMs dmesgs though but in the end it can recover and continue operations.
What I dont understand is that we have some VM that are using...
Oh, thank you. A very interresting read.
Especially this recent part about backups to PBS
https://github.com/virtio-win/kvm-guest-drivers-windows/issues/623#issuecomment-1880928878
Also reading that this could be a workaround:
Any idea if these options can be activated somehow ? Other than...
Hello,
I'm trying to troubleshoot an issue we have win a windows VM which periodically has trouble accessing disks.
In the windows system log, I can see that some attached disks (not always the same) starts being resetted by the vioscsi driver.
The result is that in the VM the mounted disk...
Hello,
I have what it looks to be the exact same issue.
Usually when we create a snapshot before doing some updates in a VM and then remove the snapshot if everything went well, it took a few seconds to do so.
Today I did the same routine again but when deleting the snapshot, the VM froze...
Hello Mira,
Thank you for your feedback. That's exactly what we were about to test.
So we went ahead with this setup and everything looked good, until our test VM started to show corruption on the file system.
One of the disk of the VM was a ZFS pool (an inside the VM ZFS pool) and running a...
Hello community,
We have recently bought a SAN that provides NVMeOF (NVMe Over Fabric) and we can now export "LUNs" as NVMe disks.
The SAN and the Proxmox nodes are linked through Ethernet controller: Mellanox Technologies MT27800 Family [ConnectX-5].
After installing all the required...
Okay, for now after having cleaned all the conf files and recreated a conf for the 0 byte one. It seems ok with pve-cluster-6.0.7.
I did some changes to some vm and they seems to stay clean.
Knocking wood.
Hello,
I was about to open a ticket about this. Yesterday I did by error updated our 4 proxmox 6 lab nodes with pvetest repository. It trashed almost every .conf files heading with garbage like this:
root@pm04:/etc/pve/local/qemu-server# cat 107.conf...
I had tried it on proxmox 5.x, I remember the bridge-pvid setting. If I'm not wrong it's supposed to be the primary vlan, but with no luck.
After switching to openvswitch everything worked like a charm (until update to pm 6.x and it's new kernel).
It's maybe worth a try, but still the problem we...
Hmm, I don't remember 100%. I think it is/was something about having a native vlan (untagged) mixed with tagged vlans, on the same interface.
Like for example native untagged VLAN on the interface or bridge is vlan 10, for management and on the same interface you can use tagged vlan for other...
Hello @t.lamprecht,
Thank you for the info. I will try to change the OS version and see where it goes.
By the way, the node i had restarted with 5.x kernel also lost the connection in the host for ceph and management interface and went in fenced mode. So the net issue also affects the host...
Hello,
We are also suffering networking problems with kernel 5.x like this original poster and also in another thread and bugzilla i've opened
https://bugzilla.proxmox.com/show_bug.cgi?id=2296
Booting with 4.x kernel from proxmox 5 resolves the problem. But now we wanted to create a windows VM...
Hello, what do you mean with instabilities ? VM losing network connection ?
Just asking because i have the same setup but without mellanox cards (chelsio 10G on some boxes and broadcom 10G on others). Two of the boxes have active-passive bonding, two others use LACP bonding. Same issue on both...
Hello, I am somehow happy that I'm not the only one on this boat. I also can confirm that since we falled back to a 4.x kernel, the situation is stable.
I made an attempt at opening a ticket on the bugzilla, but no feedback so far :)
https://bugzilla.proxmox.com/show_bug.cgi?id=2296
For having used XenServer for that many years you should be aware of differents possible modes for VMs:
This could shed some light on it and help you understand why the question was asked: https://xen-orchestra.com/blog/xen-virtualization-modes/
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