[Pacemaker] How to live migrate the kvm vm

[Qiu Zhigang]

Hi, 

Thank you, you are right, I correct the 'allow-migrate="true"', but now I found another problem when migrate, migrate failed.
The following is the log.

Dec 13 12:10:03 h10_151 kernel: type=1400 audit(1323749403.251:623): avc:  denied  { search } for  pid=27201 comm="virsh" name="libvirt" dev=dm-0 ino=2098071 scontext=unconfined_u:system_r:corosync_t:s0 tcontext=system_u:object_r:virt_var_run_t:s0 tclass=dir
Dec 13 12:10:04 h10_151 kernel: type=1400 audit(1323749404.067:624): avc:  denied  { search } for  pid=27218 comm="VirtualDomain" name="" dev=0:1c ino=13825028 scontext=unconfined_u:system_r:corosync_t:s0 tcontext=system_u:object_r:nfs_t:s0 tclass=dir
Dec 13 12:10:04 h10_151 kernel: type=1400 audit(1323749404.252:625): avc:  denied  { read } for  pid=27242 comm="virsh" name="random" dev=devtmpfs ino=3585 scontext=unconfined_u:system_r:corosync_t:s0 tcontext=system_u:object_r:random_device_t:s0 tclass=chr_file

[root at h10_145 ~]# crm
crm(live)# status
============
Last updated: Tue Dec 13 12:09:06 2011
Stack: openais
Current DC: h10_145 - partition with quorum
Version: 1.1.2-f059ec7ced7a86f18e5490b67ebf4a0b963bccfe
2 Nodes configured, 2 expected votes
2 Resources configured.
============

Online: [ h10_151 h10_145 ]

 test2	(ocf::heartbeat:VirtualDomain):	Started h10_151 (unmanaged) FAILED
 test1	(ocf::heartbeat:VirtualDomain):	Started h10_145 (unmanaged) FAILED

Failed actions:
    test1_stop_0 (node=h10_145, call=19, rc=1, status=complete): unknown error
    test2_stop_0 (node=h10_151, call=14, rc=1, status=complete): unknown error

Best Regards,

> -----Original Message-----
> From: Arnold Krille [mailto:arnold at arnoldarts.de]
> Sent: Monday, December 12, 2011 7:52 PM
> To: The Pacemaker cluster resource manager
> Subject: Re: [Pacemaker] How to live migrate the kvm vm
> 
> Hi,
> 
> On Monday 12 December 2011 11:22:51 邱志刚 wrote:
> > I have 2-node cluster of pacemaker,I want to migrate the kvm vm with
> > command "migrate", but I found the vm isn't migrated, actually it is
> > shutdown and then start on other node. I checked the log and found the
> > vm is stopped but not migrated.
> 
> > How could I live migrate the vm ? The configuration :
> > crm(live)configure# show
> > primitive test1 ocf:heartbeat:VirtualDomain \
> > 	params config="/etc/libvirt/qemu/test1.xml"
> > hypervisor="qemu:///system" \
> > 	meta allow-migrate="ture" priority="100" target-role="Started"
> > is-managed="true" \
> > 	op start interval="0" timeout="120s" \
> > 	op stop interval="0" timeout="120s" \
> > 	op monitor interval="10s" timeout="30s" depth="0" \
> > 	op migrate_from interval="0" timeout="120s" \
> > 	op migrate_to interval="0" timeout="120"
> 
> I hope that "ture" is only a typo when writing the email. Otherwise its probably
> the reason why your machine stop-start instead of a nice migration.
> Try with 'allow-migrate="true"' and see if that helps.
> 
> Have fun,
> 
> Arnold