http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1059

Summary: Live-Migrating leads to a dom0 Oops and leaves a Zombie VM Product: Xen Version: 3.0.3 Platform: Other OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: Hypervisor AssignedTo: xen-...@lists.xensource.com ReportedBy: xe...@flonatel.org

During live-migration of a domU while running

(see: http://pyropus.ca/software/memtester/) a kernel Oops occurred. Afterwards there was a Zombie - VM -- no way to kill, shutdown or remove it.

System (dom0): 2*Intel(R) Pentium(R) III CPU - S 1400MHz 2GByte RAM Debian 4.0 Linux 2.6.20-1-xen-686 #1 SMP Wed Apr 25 02:12:58 UTC 2007 i686 GNU/Linux

System (domU): Debian 4.0 Linux 2.6.18-4-xen-686 #1 SMP Mon Mar 26 21:49:04 UTC 2007 i686 GNU/Linux

Attachments: syslog: excerpt from /var/log/syslog xend.log: excerpt from /var/log/xen/xend.log

# xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 1497 2 r----- 4410.3 Zombie-migrating-vm02 36 512 1 ---s-d 1389.6 # xm destroy 36 # xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 1497 2 r----- 4413.1 Zombie-migrating-vm02 36 512 1 ---s-d 1389.6

(Note: I tested what happens, if the RAM change-rate is faster than the network. Some hundred times it worked well - but once I run in the error described here.)

Kind regards & happy debugging

Andreas Florath