Actually, I only get the error when using cache='none' -- writethrough and writeback both work, and default works also but the cache parameter is gone from the driver element if I do a dumpxml.

i also forgot to include versions: cloud1:~# qemu --version QEMU PC emulator version 0.12.5 (Debian 0.12.5+dfsg-3), Copyright (c) 2003-2008 Fabrice Bellard cloud1:~# virsh --version 0.8.6 --Igor On Sat, Jan 22, 2011 at 12:49:55AM -0600, Igor Serebryany wrote: > hi, > > i tried to add a 'cache' argument to the 'driver' element in my > domainxml for qemu/kvm. i tried adding cache="none" as well as > "writethrough" and "writeback", but every time i get these errors: > > libvirtError: internal error process exited while connecting to monitor: char device redirected to /dev/pts/1 > qemu: could not open disk image /vms/test.img: Invalid argument > > the full driver line looks like this: > <driver name="qemu" type="raw" cache="none"/> > > the same domainxml works just fine without the cache parameter. does > anyone know what i'm doing wrong? is there some other way to set the > default cache policy on qemu/kvm? i didn't see anything in the > config file... > > > --igor > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users

What filesystem type is /vms ? I've seen this error message when the filesystem did not support O_DIRECT, which cache=none enables