于 2011年01月22日 14:57, Igor Serebryany 写道: > 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. >
Hi, Igor, Could you check the disk cache support of your qemu? [root@Osier libvirt]# qemu-kvm --help | grep cache [,cache=writethrough|writeback|none|unsafe][,format=f] And, also the qemu command line for your guest? /var/log/libvirt/qemu/$guest.log Regards Osier > 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@redhat.com >> https://www.redhat.com/mailman/listinfo/libvirt-users > > > > _______________________________________________ > libvirt-users mailing list > libvirt-users@redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users