From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabio Fantoni Subject: Re: Qemu upstream bugs with xen Date: Fri, 18 Jan 2013 15:44:57 +0100 Message-ID: <50F95FE9.2030104@heliman.it> References: <50F91A25.5080408@heliman.it> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Stefano Stabellini Cc: xen-devel , Ian Jackson , Ian Campbell List-Id: xen-devel@lists.xenproject.org Il 18/01/2013 14:00, Stefano Stabellini ha scritto: > On Fri, 18 Jan 2013, Fabio Fantoni wrote: >> 1) Both linux and windows domU with qemu upstream have an additional >> empty floppy and cdrom. >> Is there a way to remove these additionals block devices? > the best way would be to pass a device or a global command line option > to QEMU to change the default for isa-fdc > > >> 2) xl cd-eject and cd-insert are not working: >> >> xl -vvv cd-eject W7 hdb >> libxl: debug: libxl.c:2389:libxl_cdrom_insert: ao 0x1b95990: create: >> how=(nil) callback=(nil) poller=0x1b95930 >> libxl: debug: libxl_device.c:229:libxl__device_disk_set_backend: Disk >> vdev=hdb spec.backend=phy >> libxl: debug: libxl_device.c:175:disk_try_backend: Disk vdev=hdb, >> backend phy unsuitable as phys path not a block device >> libxl: error: libxl_device.c:269:libxl__device_disk_set_backend: no >> suitable backend for disk hdb > cd-eject should work by trying to insert an empty cdrom. > In particular the disk format should be LIBXL_DISK_FORMAT_EMPTY, but I > think this is not the case here. > I guess it is a bug in parse_disk_config. > > >> libxl: debug: libxl_event.c:1482:libxl__ao_abort: ao 0x1b95990: abort >> libxl: debug: libxl_event.c:1472:libxl__ao__destroy: ao 0x1b95990: destroy >> xc: debug: hypercall buffer: total allocations:4 total releases:4 >> xc: debug: hypercall buffer: current allocations:0 maximum allocations:2 >> xc: debug: hypercall buffer: cache current size:2 >> xc: debug: hypercall buffer: cache hits:1 misses:2 toobig:1 >> >> xl -vvv cd-insert W7 hdb raw:/mnt/vm/iso/QUANTAL.iso >> libxl: debug: libxl.c:2389:libxl_cdrom_insert: ao 0x1d07990: create: >> how=(nil) callback=(nil) poller=0x1d079f0 >> libxl: debug: libxl_device.c:229:libxl__device_disk_set_backend: Disk >> vdev=hdb spec.backend=phy >> libxl: error: libxl_device.c:243:libxl__device_disk_set_backend: Disk >> vdev=hdb failed to stat: raw:/mnt/vm/iso/QUANTAL.iso: No such file or >> directory > It looks like it is trying to stat "raw:/mnt/vm/iso/QUANTAL.iso" instead > of "/mnt/vm/iso/QUANTAL.iso". The format parsing must be wrong. > > >> libxl: debug: libxl_event.c:1482:libxl__ao_abort: ao 0x1d07990: abort >> libxl: debug: libxl_event.c:1472:libxl__ao__destroy: ao 0x1d07990: destroy >> xc: debug: hypercall buffer: total allocations:4 total releases:4 >> xc: debug: hypercall buffer: current allocations:0 maximum allocations:2 >> xc: debug: hypercall buffer: cache current size:2 >> xc: debug: hypercall buffer: cache hits:1 misses:2 toobig:1 >> >> Seem there is parsing error about backend and device/iso path, for now I >> not found solution for fix it on code. I've added -nodefaults option to qemu upstream to remove empty floppy and cdrom with success. Please could this be added by default on libxl on qemu upstream starting? About cd-eject cd-insert parsing bug can you solve please?