[Users] Problems doing live migration

[Marc Olive]

Hello,

I'm trying to do a manual live migration on a Linux 2.6.32-5-openvz-amd64 and 
openvz 3.0.24, but I'm getting some troubles:

.- Container's suspend seems OK.
.- But I'm not able to dump the container:
"Can not dump container: Invalid argument
Error: iptables-save exited with 255
Checkpointing failed"
.- I can issue iptables-save command with no problem.
.- Also, I'm not able to resume the container:
"Can not resume container: No such file or directory"
.- After this happens, vzctl complains about quota issues.

Here's is a session log:

~# vzctl chkpnt 114 --suspend
Setting up checkpoint...
        suspend...
        get context...
Checkpointing completed succesfully
~# vzctl chkpnt 114 --dump --dumpfile /tmp/114.dump
Setting up checkpoint...
        join context..
        dump...
Can not dump container: Invalid argument
Error: iptables-save exited with 255
Checkpointing failed
~# vzctl chkpnt 114 --dump --dumpfile /tmp/114.dump
Setting up checkpoint...
        join context..
        dump...
Cannot set linkdir in kernel: Too many links
Checkpointing failed
~#  vzctl chkpnt 114 --resume
Resuming...
Can not resume container: No such file or directory
~# ls -ld /var/lib/vz/*/114
drwxr-xr-x 21 root root 4096 12 gen 12:13 /var/lib/vz/private/114
drwxr-xr-x  2 root root 4096 10 gen  2011 /var/lib/vz/root/114
~# vzctl stop 114
Stopping container ... 
Container was stopped  
vzquota : (error) Quota off syscall for id 114: Device or resource busy
vzquota : (error)       Possible reasons:
vzquota : (error)       - Container's root is not unmounted
vzquota : (error)       - there are opened files inside container's 
root/private area
vzquota : (error)       - your current working directory is inside a container 
directory
vzquota : (error)         root/private area
vzquota off failed [3] 
~# vzctl start 114
Starting container ... 
vzquota : (warning) Quota is running for id 114 already
Container is mounted   
Adding IP address(es): 10.81.53.15
Setting CPU units: 1000
Container start in progress...
~# vzctl exec 114 reboot                                           
~# vzctl stop 114
Stopping container ... 
Container was stopped  
vzquota : (error) Quota off syscall for id 114: Device or resource busy
vzquota : (error)       Possible reasons:
vzquota : (error)       - Container's root is not unmounted
vzquota : (error)       - there are opened files inside container's 
root/private area
vzquota : (error)       - your current working directory is inside a container 
directory
vzquota : (error)         root/private area
vzquota off failed [3] 

If I use the "vzmigrate" command, the result is similar, here's the last logs, 
the command issued is "vzmigrate -v -r no --keep-dst --online linux-01 117":

Checkpointing completed succesfully
   Dumping container
Setting up checkpoint...
        join context..
        dump...
Can not dump container: Invalid argument
Error: iptables-save exited with 255
Checkpointing failed
Error: Failed to dump container
Resuming...
Can not resume container: No such file or directory

Why I can not dump the container? iptables-save is there on my system and I 
can execute it, why is that command needed after all?

Thanks,

-- 

Marc Olivé
Blau Advisors

marc.olive at blauadvisors.com

C/ Molí de Guasch, 10 baixos 1a,
43440 L’Espluga de Francolí (Tarragona)
Tel. +34 977 870 702
Tel i Fax. + 34 977 870 507

www.blauadvisors.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 490 bytes
Desc: This is a digitally signed message part.
Url : http://openvz.org/pipermail/users/attachments/20120112/e1f9ce1c/attachment.bin