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*SOLVED* Live-Migration and SYSV message queues [message #13069] Fri, 18 May 2007 12:21 Go to next message
sebastian.esser is currently offline  sebastian.esser
Messages: 9
Registered: May 2007
Junior Member
Hi,

the live migration fails for one of my VEs, because of an existent IPC message queue:

[root@openvz~]# vzctl chkpnt 101 --suspend
Setting up checkpoint...
        suspend...
Can not suspend VE: Device or resource busy
SYSV msgqueues are not supported, found 1
Checkpointing failed
[root@openvz~]# vzctl enter 101
entered into VE 101
[root@ve101 /]# ipcs

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      

------ Semaphore Arrays --------
key        semid      owner      perms      nsems     
0x00000000 32768      apache    600        1         
0x00000000 65537      apache    600        1         
0x00000000 98306      apache    600        1         

------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages    
0x31103f48 0          root       666        0            0           

[root@ve101 /]#


Is there any way to workaround this issue?


Thanks in advance

Sebastian

[Updated on: Mon, 21 May 2007 06:17] by Moderator

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Re: Live-Migration and SYSV message queues [message #13072 is a reply to message #13069] Fri, 18 May 2007 12:57 Go to previous messageGo to next message
Andrey Mirkin is currently offline  Andrey Mirkin
Messages: 193
Registered: May 2006
Senior Member
Hello,

Currently we don't support message queues in CPT.

Unfortunately there is no way to workaround this.

We plan to add support for message queues, but we can't estimate time when this will be implemented.


Andrey Mirkin
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Re: Live-Migration and SYSV message queues [message #13073 is a reply to message #13072] Fri, 18 May 2007 13:28 Go to previous messageGo to next message
sebastian.esser is currently offline  sebastian.esser
Messages: 9
Registered: May 2007
Junior Member
It's a pity.
Thank you Andrey for your quick reply.

Sebastian
Re: Live-Migration and SYSV message queues [message #13114 is a reply to message #13073] Mon, 21 May 2007 06:23 Go to previous messageGo to next message
Vasily Tarasov is currently offline  Vasily Tarasov
Messages: 1345
Registered: January 2006
Senior Member
Hello,

I've created a bug report at bugzilla (http://bugzilla.openvz.org/show_bug.cgi?id=583)
in order not to forget about implementing message queues migration.
Sebastian, you can add youself to CC and you'll be notifiedm when it'll be implemented.

Thank you,
Vasily.
Re: *SOLVED* Live-Migration and SYSV message queues [message #22944 is a reply to message #13069] Wed, 07 November 2007 18:33 Go to previous message
dev is currently offline  dev
Messages: 1693
Registered: September 2005
Location: Moscow
Senior Member

FYI, sysv5 msg queues are supported by checkpointing starting from 2.6.18-028stab046 kernels.


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