QEMU boot from snapshot giving error

Question

I am trying to boot QEMU from its snapshotted image. I use the following command on QEMU Monitor

stop savevm new cont

I then exit from QEMU Montor.

Then I look at the list of snapshots that have been created for the QCOW2 base file:

:~/qemu-2.0.0-rc0$ qemu-img snapshot -l ~/ubuntu-kvm/ubuntu.qcow2 Snapshot list: ID TAG VM SIZE DATE VM CLOCK 1 new 85M 2014-04-14 20:31:07 00:06:01.902

I now want to boot the Guest VM from the snapshot "new".

For this I did:

./x86_64-softmmu/qemu-system-x86_64 --enable-kvm -hda ~/ubuntu-kvm/ubuntu.qcow2 -loadvm new

however I got this error:

Program received signal SIGSEGV, Segmentation fault. 0x00007ffff5751fb6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt 0 0x00007ffff5751fb6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 1 0x00007ffff7e07ec9 in tlb_flush (cpu=, flush_global=) at /usr/include/x86_64-linux-gnu/bits/string3.h:85 2 0x00007ffff7e0ca2c in cpu_common_post_load (opaque=, version_id=) at /home/manan/qemu-2.0.0-rc0/exec.c:423 3 0x00007ffff7e00d2d in vmstate_load_state (f=0x7ffff8ad1400, vmsd=0x7ffff82c9660, opaque=0x7ffff8971570, version_id=1) at vmstate.c:87 4 0x00007ffff7e719d7 in vmstate_load (version_id=, se=0x7ffff89821e0, f=0x7ffff8ad1400) at /home/manan/qemu-2.0.0-rc0/savevm.c:435 5 qemu_loadvm_state (f=0x7ffff8ad1400) at /home/manan/qemu-2.0.0-rc0/savevm.c:805 6 0x00007ffff7e7227a in load_vmstate (name=) at /home/manan/qemu-2.0.0-rc0/savevm.c:1091 7 0x00007ffff7c5ab5c in main (argc=, argv=, envp=) at vl.c:4457

Am I missing some step during creating / loading the snapshot?

Answer 1

I came to know from one of the posts that the problem lies with qemu-2.0.rc version itself. The segfault does not appear with qemu-1.7.0 version.