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Re: [Qemu-discuss] gentoo linux, vanilla 3.10.23, l ibvirt 1.1.4, libvir


From: Marko Weber | 8000
Subject: Re: [Qemu-discuss] gentoo linux, vanilla 3.10.23, l ibvirt 1.1.4, libvirt-glibc 0.1.7 , qemu 1.6.0- r1 problem with cache =none
Date: Thu, 12 Dec 2013 09:01:44 +0100
User-agent: Roundcube zbfmail Webmail/0.8.5


Hi Fam,

Am 2013-12-12 03:01, schrieb Fam Zheng:
On 2013年12月11日 22:44, Marko Weber | 8000 wrote:


hello list,

on gentoo with the subject listed components, i cant start my virtual
machines
when cache=none is set on disk settings

when i set cache=default, the machine starts.

the partition where the disk-images lies is mounted with xfs with these
settings':


(rw,noatime,nodiratime,attr2,largeio,nobarrier,logbsize=256k)


any ideas ?

any further information needed ?


virt-manager 0.10.0-r1  used here.



Hi Marko,

What is your command like to start qemu and what error message do you
see? cache=none should work with xfs.

yeah, thats what make wondering with my good old xfs that machines with cache=none dont start anymore. i cant find out what update caused this. even go back to earlier kernels dont fix this.
maybe a worth info is, that my disk-images are lying on raid6
the mount options for that xfs partition on the raid6 are like shown above: (rw,noatime,nodiratime,attr2,largeio,nobarrier,logbsize=256k)

i sue virt-manager, so i dont how to tell you the command to start qemu, but virt-manager show this when i try to fire up the machine:


Fehler beim Starten der Domain: Interner Fehler: Prozess während der Verbindungsaufnahme zum Monitor beendet :qemu-system-x86_64: -drive file=/raid6/virtual/debian-kaspersky.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native: could not open disk image /raid6/virtual/debian-kaspersky.img: Invalid argument

and in the "more info" box:

ehler beim Starten der Domain: Interner Fehler: Prozess während der Verbindungsaufnahme zum Monitor beendet :qemu-system-x86_64: -drive file=/raid6/virtual/debian-kaspersky.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native: could not open disk image /raid6/virtual/debian-kaspersky.img: Invalid argument


Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 100, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 122, in tmpcb
    callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1210, in startup
    self._backend.create()
File "/usr/lib64/python2.7/site-packages/libvirt.py", line 708, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: Interner Fehler: Prozess während der Verbindungsaufnahme zum Monitor beendet :qemu-system-x86_64: -drive file=/raid6/virtual/debian-kaspersky.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native: could not open disk image /raid6/virtual/debian-kaspersky.img: Invalid argument


thats all.

do you need any further info?


thanks,
marko



Thanks,
Fam



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