On Fri, Mar 18, 2011 at 4:06 PM, Guido Winkelmann <guido-kvml@xxxxxxxxxxxxxxxxx> wrote: > Am Wednesday 16 March 2011 schrieb Stefan Hajnoczi: >> On Tue, Mar 15, 2011 at 1:20 PM, Guido Winkelmann >> >> <guido-kvml@xxxxxxxxxxxxxxxxx> wrote: >> > Am Tuesday 15 March 2011 schrieben Sie: >> >> On Mon, Mar 14, 2011 at 10:57 PM, Guido Winkelmann >> >> >> >> <guido-kvml@xxxxxxxxxxxxxxxxx> wrote: >> >> > On Monday 14 March 2011 20:32:23 Stefan Hajnoczi wrote: >> >> >> On Mon, Mar 14, 2011 at 6:05 PM, Guido Winkelmann >> >> >> >> >> >> <guido-kvml@xxxxxxxxxxxxxxxxx> wrote: >> >> >> > Does anybody have an idea what might cause this or what might be >> >> >> > done about it? >> >> >> >> >> >> The lsi_scsi emulation code is incomplete. It does not handle some >> >> >> situations like the ORDERED commands or message 0x0c. >> >> >> >> >> >> There is a patch to address the message 0xc issue, it has not been >> >> >> applied to qemu.git or qemu-kvm.git yet: >> >> >> http://patchwork.ozlabs.org/patch/63926/ >> >> >> >> >> >> Basically there is no one actively maintaining or reviewing patches >> >> >> for the lsi53c895a SCSI controller. >> >> > >> >> > Does that mean that using the SCSI transport for virtual disks is >> >> > officially unsupported or deprecated or that it should be? >> >> >> >> The LSI SCSI emulation in particular has not seen much attention. As >> >> for the wider SCSI emulation there has been work over the past few >> >> months so it's alive and being used. >> > >> > Well, I cannot find any other HBAs than LSI when I run "qemu -device ?" - >> > or at least nothing I would recognize as a SCSI HBA. As far as I can >> > see, that pretty much means I cannot use SCSI disks in KVM at all, >> > unless I'm prepared to live with the problems described earlier... >> >> The LSI controller is the only available PCI SCSI HBA. Are you able >> to try the patch I linked? >> http://patchwork.ozlabs.org/patch/63926/ > > I haven't tried the patch yet. At work, it was decided that we are not going to > use a manually patch version of qemu-kvm unless absolutely necessary, and at > home, I'm unlikely to ever want to virtualize an OS without virtio-drivers. > > I can still try the patch on my home machine, if you want me to. Don't worry about it if you're going virtio-blk already. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
