If you have a chance to try to reproduce this with upstream qemu, we
could get them involved in debugging this.
(Upstream qemu means:
git clone git://git.qemu.org/qemu.git
apt-get build-dep qemu-kvm
./configure --target-list="x86_64-softmmu i386-softmmu x86_64-linux-user
i386-linux-user"
make
./x86_64-softmmu/qemu-system-x86_64 -hda x.img <...>
Although, this reminds me, due to a known bug it may not build. Drat. If that
happens, please let me know and i'll raise that bug to critical priority. You
can work around it by applying the following patch:
diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
index f96d17a..38f45b1 100644
--- a/hw/9pfs/virtio-9p-handle.c
+++ b/hw/9pfs/virtio-9p-handle.c
@@ -22,6 +22,16 @@
#include "qemu-xattr.h"
#include <unistd.h>
#include <linux/fs.h>
+#define AT_FDCWD -100 /* Special value used to indicate
+ openat should use the current
+ working directory. */
+#define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */
+#define AT_REMOVEDIR 0x200 /* Remove directory instead of
+ unlinking file. */
+#define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */
+#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount
traversal */
+#define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
+#include <fcntl.h>
#ifdef CONFIG_LINUX_MAGIC_H
#include <linux/magic.h>
#endif
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/924247
Title:
KVM - reboot VM problem
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https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/924247/+subscriptions
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