[Xen-devel] [xm save --checkpoint problem]

[박은병 <peb1611@xxxxxxxxx>]

I posted 'xm save --checkpoint' problem in the past. 

just snapshot with 'xm save' works well. 

but live checkpoint 'xm save --checkpoint' command doesn't work well.
As you know, 
'-c' option means "leaving domain running after creating snapshot"

but after checkpointing, domU state is bad 

xm console [domain] 
after checkpointing,

WARNING: g.e. still in use!
WARNING: g.e. 
still in use!
WARNING: g.e. still in use!
WARNING: g.e. still in 
use!

domU login prompt following this message appeared.
And, I try to login my guest domU, domU does not show any responses.

after destroy
 domU, I try to restore by snapshoted file and it seems to work well.

I have tested xen 3.4.2 with pvops 2.6.31.6,
and now, xen-unstable 4.1 with pvops 2.6.32.15 also have same problem
my disribution is ubuntu 9.10 karmic server

I snapshoted the guest disk image (lvm) by applying following scripts
http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00732.html

my /var/log/xen/xend.log 

[2010-06-22 02:33:06 3161] INFO (DevController:361) Calling external migration tool for step 1
[2010-06-22 02:33:07 3161] INFO (DevController:365) Calling VBD migration script: /root/xen/domainU/ubuntu1-0622023306 ubuntu1 1
[2010-06-22 02:33:07 3161] INFO (DevController:361) Calling external migration tool for step 1
[2010-06-22 02:33:07 3161] INFO (DevController:365) Error: Could not find script '/etc/xen/scripts/vif-migration.sh'
[2010-06-22 02:33:07 3161] DEBUG (XendCheckpoint:124) [xc_save]: /usr/lib/xen/bin/xc_save 37 8 0 0 0
[2010-06-22 02:33:07 3161] INFO (XendCheckpoint:408) xc_save: failed to get the suspend evtchn port
[2010-06-22 02:33:07 3161] INFO (XendCheckpoint:408)
[2010-06-22 02:33:07 3161] DEBUG (XendCheckpoint:379) suspend
[2010-06-22 02:33:07 3161] DEBUG (XendCheckpoint:127) In saveInputHandler suspend
[2010-06-22 02:33:07 3161] DEBUG (XendCheckpoint:129) Suspending 8 ...
[2010-06-22 02:33:07 3161] DEBUG (XendDomainInfo:521) XendDomainInfo.shutdown(suspend)
[2010-06-22 02:33:07 3161] DEBUG (XendDomainInfo:1877) XendDomainInfo.handleShutdownWatch
[2010-06-22 02:33:07 3161] DEBUG (XendDomainInfo:1877) XendDomainInfo.handleShutdownWatch
[2010-06-22 02:33:07 3161] INFO (XendDomainInfo:2074) Domain has shutdown: name=migrating-ubuntu1 id=8 reason=suspend.
[2010-06-22 02:33:07 3161] INFO (DevController:361) Calling external migration tool for step 2
[2010-06-22 02:33:08 3161] INFO (DevController:365) Calling VBD migration script: /root/xen/domainU/ubuntu1-0622023306 ubuntu1 2
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 3 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 18 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 19 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 20 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 21 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 22 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 23 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 24 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 25 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 26 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 27 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 28 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 29 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 36 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 37 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 40 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 41 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365) File descriptor 43 left open
[2010-06-22 02:33:08 3161] INFO (DevController:365)   Logical volume "ubuntu1-0622023306" created
[2010-06-22 02:33:08 3161] INFO (DevController:361) Calling external migration tool for step 2
[2010-06-22 02:33:08 3161] INFO (DevController:365) Error: Could not find script '/etc/xen/scripts/vif-migration.sh'
[2010-06-22 02:33:08 3161] INFO (XendCheckpoint:135) Domain 8 suspended.
[2010-06-22 02:33:08 3161] INFO (DevController:361) Calling external migration tool for step 3
[2010-06-22 02:33:08 3161] INFO (DevController:365) Calling VBD migration script: /root/xen/domainU/ubuntu1-0622023306 ubuntu1 3
[2010-06-22 02:33:08 3161] INFO (DevController:361) Calling external migration tool for step 3
[2010-06-22 02:33:09 3161] INFO (DevController:365) Error: Could not find script '/etc/xen/scripts/vif-migration.sh'
[2010-06-22 02:33:09 3161] DEBUG (XendCheckpoint:144) Written done
[2010-06-22 02:33:28 3161] DEBUG (XendDomainInfo:3131) XendDomainInfo.resumeDomain(8)
[2010-06-22 02:33:28 3161] DEBUG (XendDomainInfo:3172) XendDomainInfo.resumeDomain: completed

what is the problem??
'xm save --checkpoint' is works well to you??

-- 
Eunbyung Park
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