[pve-devel] proxmox 4.0 : "Could not set AIO state: File descriptor in bad state" qemu error with more than 129 kvm (129 disks)

[Alexandre DERUMIER]

I have tried to shutodown apparmor service, doesn't help.

setting aio=threads fix the problem.


----- Mail original -----
De: "aderumier" <aderumier at odiso.com>
À: "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Lundi 12 Octobre 2015 18:53:48
Objet: [pve-devel] proxmox 4.0 : "Could not set AIO state: File descriptor in bad state" qemu error with more than 129 kvm (129 disks)

Hi, 

I have upgraded a server with a lot of vm (160vms), 

each vms is a clone of a template and they are 1 disk by vm 

When I started the 130th vm, I have this error 

kvm: -drive file=/var/lib/vz/images/104/vm-104-disk-1.qcow2,if=none,id=drive-virtio0,format=qcow2,cache=none,aio=native,detect-zeroes=on: Could not set AIO state: File descriptor in bad state 


Stopping another vm, and start the 130th is working. 


Seem to be a system limit. 

Could it be related to apparmor ? 

(starting the vm manually with commandline without systemd does the same thing) 


# ulimit -a 
core file size (blocks, -c) 0 
data seg size (kbytes, -d) unlimited 
scheduling priority (-e) 0 
file size (blocks, -f) unlimited 
pending signals (-i) 1031398 
max locked memory (kbytes, -l) 64 
max memory size (kbytes, -m) unlimited 
open files (-n) 65536 
pipe size (512 bytes, -p) 8 
POSIX message queues (bytes, -q) 819200 
real-time priority (-r) 0 
stack size (kbytes, -s) 8192 
cpu time (seconds, -t) unlimited 
max user processes (-u) 1031398 
virtual memory (kbytes, -v) unlimited 
file locks (-x) unlimited 
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