Re: [libvirt-users] VM migration upon shutdown in centos 7

> Does this command alone succeed? Yes. I have used this command to migrate VMs successfully, without even knowing that spelling has changed. > I don't know enough about systemd but maybe it's not waiting for virsh to finish? Yes I also think virsh or libvirtd or related service does not wait before /root/vm_migrate.sh is called and hence live migration fails. If I replace Live Migration with a simple ping to peer node in the vPreShutdownHook.service, then ping goes thru successfully thus indicating network service was UP at that time. > Can you try to get any logs to see what is going on actually? Jan 8 15:30:58 desktop4 systemd: Stopping Session c1 of user gdm. Jan 8 15:30:58 desktop4 gdm: Freeing conversation 'gdm-launch-environment' with active job Jan 8 15:30:58 desktop4 systemd: Stopped target Sound Card. Jan 8 15:30:58 desktop4 systemd: Stopping Sound Card. Jan 8 15:30:58 desktop4 systemd: Stopping LVM2 PV scan on device 8:3... Jan 8 15:30:58 desktop4 systemd: Removed slice system-getty.slice. Jan 8 15:30:58 desktop4 systemd: Stopping system-getty.slice. Jan 8 15:30:58 desktop4 systemd: Stopping Authorization Manager... Jan 8 15:30:58 desktop4 systemd: Stopping Virtual Machine and Container Registration Service... Jan 8 15:30:58 desktop4 systemd: Stopping GlusterFS brick processes (stopping only)... Jan 8 15:30:58 desktop4 systemd: Removed slice system-selinux\x2dpolicy\x2dmigrate\x2dlocal\x2dchanges.slice. Jan 8 15:30:58 desktop4 systemd: Stopping system-selinux\x2dpolicy\x2dmigrate\x2dlocal\x2dchanges.slice. Jan 8 15:30:58 desktop4 systemd: Stopping Availability of block devices... Jan 8 15:30:58 desktop4 systemd: Stopping Virtual Machine qemu-1-GsmController. Jan 8 15:30:58 desktop4 alsactl[837]: alsactl daemon stopped Jan 8 15:30:58 desktop4 systemd: Stopping Session 1 of user root. Jan 8 15:30:58 desktop4 systemd: Stopping Manage Sound Card State (restore and store)...

On Wed, Jan 10, 2018 at 8:46 PM, Michal Privoznik <mprivozn(a)redhat.com&gt; wrote: > On 01/05/2018 12:00 PM, Raman Gupta wrote: >> Hi, >> >> I have CentOS 7, two node system which allows live VM migration between >> them. Live migration triggered from virsh is happily happening. I am > using >> GlusterFS for replicating VM disk files. >> >> Now I want to automatically do the live migration at the time of >> reboot/shutdown/halt of the host node and for this I have written a > systemd >> service unit [vPreShutdownHook.service] and placed the live migration >> command in a migrate script which is invoked from this service unit. The >> migrate script is invoked but migration does not happen. >> If someone has some idea please help me to migrate VM upon shutdown. >> >> >> ######## vPreShutdownHook.service ############### >> >> [Unit] >> Description=vPreShutdownHook >> Requires=network.target >> Requires=libvirtd.service >> Requires=dbus.service >> Requires=glusterd.service >> Requires=glusterfsd.service >> DefaultDependencies=no >> Before=shutdown.target reboot.target >> >> [Service] >> Type=oneshot >> RemainAfterExit=true >> ExecStart=/bin/true >> ExecStop=/root/vm_migrate.sh >> >> [Install] >> WantedBy=multi-user.target >> >> >> ########## Command to migrate ############ >> /usr/bin/virsh migrate --verbose --p2p --tunneled --live --compressed >> --comp-methods "mt" --comp-mt-level 5 --comp-mt-threads 5 >> --comp-mt-dthreads 5 MY_VM qemu+ssh://root@$node2/system > > Does this command alone succeed? > BTW: unless really needed --live will only make the migration take longer. > > I don't know enough about systemd but maybe it's not waiting for virsh > to finish? Can you try to get any logs to see what is going on actually? > > Michal >