[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 aderumier at odiso.com
Tue Oct 13 08:54:46 CEST 2015


>>but 128*128 = 16384, so why do you reach the limit 65536? You have
>>more than one disk per VM?

as I said, I see 256 aio nr by disk with proxmox 3  (128*256=32768) and  1024 aio nr by disk with proxmox 4 (128*1024 = 131072)

Same version of qemu.

some maybe it's a kvm change in kernel, I really don't known.


----- Mail original -----
De: "dietmar" <dietmar at proxmox.com>
À: "aderumier" <aderumier at odiso.com>, "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Mardi 13 Octobre 2015 06:44:09
Objet: Re: [pve-devel] proxmox 4.0 : "Could not set AIO state: File descriptor in bad state" qemu error with more than 129 kvm (129 disks)

> On October 13, 2015 at 3:03 AM Alexandre DERUMIER <aderumier at odiso.com> wrote: 
> 
> 
> Hi, 
> 
> increasing /proc/sys/fs/aio-max-nr fix the problem. 

but 128*128 = 16384, so why do you reach the limit 65536? You have 
more than one disk per VM? 


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