An additional note is that, qemu-img snapshot -l <snapshot_file>
shows VM_Size = 0 Has anyone observed this issue before? Regards -- On Tue, Oct 19, 2010 at 9:18 AM, Ubuntu Explorer <ubuntuexplo...@gmail.com>wrote: > I also read the following > > VM snapshots currently have the following known limitations: > They cannot cope with removable devices if they are removed or inserted > after a snapshot is done. > A few device drivers still have incomplete snapshot support so their state > is not saved or restored properly (in particular USB). > > I am using an ide0-hd0 device option with removable=0 and ro=0. > Are there any additional options to be set? > -- > > > On Tue, Oct 19, 2010 at 8:51 AM, Ubuntu Explorer <ubuntuexplo...@gmail.com > > wrote: > >> Thanks for your help. >> >> But, after commenting out snapshot option, I still cannot save the VM >> state into the ide0-hd0 block device. >> >> Here is some more information about the problem. >> >> I am trying to do the following >> a. info block >> shows virtio, ide0-hd0 >> b. savevm snapshot_name >> c. info snapshots >> Shows snapshot_name under virtio >> d. commit ide0-hd0 >> e. quit >> f. Check timestamp of ide0 file - no change. ( I assume that qemu would >> write something to this file) >> g. restart qemu. >> h. info snapshots >> i. No snapshots in "virtio" >> >> I will try to run qemu in gdb mode to see why commit is not committing the >> changes to the ide0-hd0 block device. >> But any other information will be helpful as well. I have googled a lot >> without much luck. >> >> Regards >> UE. >> >> >> On Mon, Oct 18, 2010 at 3:17 PM, Stefan Hajnoczi <stefa...@gmail.com>wrote: >> >>> On Mon, Oct 18, 2010 at 12:37 AM, Ubuntu Explorer >>> <ubuntuexplo...@gmail.com> wrote: >>> > I am trying to implement snapshot saving and loading from command line >>> using >>> > qemu. I am using both the drive and disk options as follows. >>> > <qemu exe> \ >>> > --disk <path to disk file> \ >>> > ...other options \ >>> > -drive file=<path to drive file>, >>> > index=0,media=disk,snapshot=on,if=ide,type=drive,cache=writethrough >>> >>> Remove snapshot=on. See the documentation about -snapshot versus >>> savevm snapshots: >>> >>> http://wiki.qemu.org/download/qemu-doc.html#vm_005fsnapshots >>> >>> "When using the (unrelated) -snapshot option (Snapshot mode), you can >>> always make VM snapshots, but they are deleted as soon as you exit >>> QEMU." >>> >>> Stefan >>> >> >> >
