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graphic: 0.753
device: 0.745
instruction: 0.687
socket: 0.662
other: 0.657
mistranslation: 0.647
vnc: 0.642
semantic: 0.606
network: 0.465
boot: 0.416
KVM: 0.289
assembly: 0.162
-device nec-usb-xhci (usb 3) breaks VM snapshots
Enabling the USB 3.0 controller apparently breaks "live" snapshotting.
To reproduce:
$ qemu-system-x86_64 -device nec-usb-xhci vm.qcow2
then, at the Monitor:
(qemu) savevm
Error -22 while writing VM
(qemu)
Instead, if I remove -device nec-usb-xhci from the cmdline, everything works fine.
Some QEMU and OS info:
$ qemu-system-x86_64 -version
QEMU emulator version 1.5.0, Copyright (c) 2003-2008 Fabrice Bellard
$ uname -a
Linux localhost 3.2.0-4-amd64 #1 SMP Debian 3.2.41-2 x86_64 GNU/Linux
The same also happens with 1.4.2. All compiled from source, not Debiabn package (btw, this *also* happens with distro packages/older versions).
Snapshotting for XHCI has been implemented after QEMU 1.5.0:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=37352df30fbc38d1de464db8
... i.e. this should be working since QEMU 1.6.0. So I'm setting the status to "Fix Released" - if you still have problems with the latest version of QEMU, please feel free to open this ticket again.
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