Red Hat Bugzilla – Bug 704409
guest's snapshot got kernel panic after dd a big file then shutdown
Last modified: 2011-08-01 12:26:19 EDT
Created attachment 498679 [details]
Description of problem:
Guest(rhel4.9-64) kernel panic during shutdown.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. create a snapshot
#qemu-img create -b RHEL-4.9-64.raw -f qcow2 sn1.qcow2
2. boot up new created sn1.qcow2 with cmd
******** cmd line ********
#/usr/libexec/qemu-kvm -drive file='sn1.qcow2',index=0,if=ide,media=disk,cache=none,format=qcow2 -net nic,vlan=0,model=e1000,macaddr='9a:ee:93:df:01:06' -net tap,vlan=0,ifname='t0-091953-J5dh',script='qemu-ifup-switch',downscript='no' -m 32768 -smp 8,cores=1,threads=1,sockets=8 -cpu qemu64,+sse2 -soundhw ac97 -spice port=8000,disable-ticketing -qxl 1 -rtc-td-hack -M rhel5.6.0 -boot c -usbdevice tablet -no-kvm-pit-reinjection
3. create big file in guest
#dd if=/dev/zero of=/tmp/file_sn1 bs=1M count=1000
4. shutdown guest
#shutdown -h now
guest kernel panic
guest shutdown normally
Tested 20 times, hit this bug only once.
Doesn't look related to the snapshot at all. I suspect this was only a coincidence.
Golita, did you experience the problem again since then?
No response, so I'm assuming that it really happened only once and is most likely unrelated to qemu. Closing.