Unable to use native AIO: failed to create linux AIO context: Resource temporarily unavailable

[mstgeo]

HI!

I am facing a strange issue on Proxmox 6 with KVM machines. All was working well. But today, it occured, after a restart of a physical node I am getting and issue:

kvm: -drive file=/var/lib/vz-data/images/199/vm-199-disk-0.qcow2,if=none,id=drive-scsi0,format=qcow2,cache=none,aio=native,detect-zeroes=on: Unable to use native AIO: failed to create linux AIO context: Resource temporarily unavailable
TASK ERROR: start failed: QEMU exited with code 1

I have several VM machines based on KVM and what I discovered is when I switch off some dev ones, I can run the ones where I get an error.

What can be the cause and how to solve it quick ?

kernel: 5.4.174-2-pve #1 SMP PVE 5.4.174-2 (Thu, 10 Mar 2022 15:58:44 +0100) x86_64 GNU/Linux

proxmox 6 -- updated!

Guys, pls help me here... I dunno what can be the cause. I dig the internet, however there was no solution to this.

Thanks in advance !

regards,
G.

 

[LnxBil]

Please run

sysctl -a | grep aio

 

[mstgeo]

This is what sysctl shows for aio:

fs.aio-max-nr = 1048576
fs.aio-nr = 1048533


The problem is, we have a mixed env there LXC / KVM, 5 of 12 KVM machines can run, the rest is not able to start...

Thanks in advance!

 

[mstgeo]

Thx LnxBil, I owe you a beer Thx Mate !