Hello Daniel, Am 2013-12-10 11:23, schrieb Daniel P. Berrange: >On Tue, Dec 10, 2013 at 11:20:35AM +0100, Marko Weber | ZBF wrote: >> >>hello mailinglist, >> >>on gentoo system with qemu-1.6.1, libvirt 1.1.4, libvirt-glib-0.1.7, >>virt-manager 0.10.0-r1 >> >>when i set on virtual machine "cache=none" in the disk-menu, the >>machine faults to start with: >> >><< >>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 >> >> >>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 >>>> >> >>when i switch back to cache=default, the machine start like a charm. >> >>any ideas why? i cant find anything in logs, only this "invalid >>argument". > >cache=none uses O_DIRECT flag. if you get "Invalid argument" it usually >means that your filesystem is bad and does not support O_DIRECT i use vanilla-kernel 3.10.23 and xfs on the partition where the vm .img is lying. the mount options i use: /raid6 type xfs (rw,noatime,nodiratime,largeio,nobarrier,logbsize=256k) any wrong here?