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Backup / restore /migrate tasks [message #6106]

Fri, 08 September 2006 10:32

dagr
Messages: 83
Registered: February 2006

Member

1 . I tried migrate tool , wasnt able to make online migration because of checkpoints . I just want to understand how much is it onlne. For instance - does it acts like hibernate , ie process keeps running without restart? Also what about network connections? Say i made telnet connection to smtp before migration - typed rcpt to:<... , etc , during migration i dont loose connection and after migrating i can continue mail session without any data losses . Is it possible ?

2. Also is there exist online backup tool? In case i dont need to migrate , but i want to have working current copy on another machine to start it when original node suddenly crushes. Is it possible or the only way to install heartbeat with drbd , so on ?

Also im interested what advantages does virtuozzo have against openvz in these terms ?

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Re: Backup / restore /migrate tasks [message #6107 is a reply to message #6106]

Fri, 08 September 2006 10:43

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

Hello,

Quote:

I tried migrate tool , wasnt able to make online migration because of checkpoints .

What was the actual problem? Describe what do you do,
what fails?

As concerns

Quote:

I just want to understand how much is it onlne

Quote from http://wiki.openvz.org/Checkpointing_and_live_migration:

Quote:

CPT allows to migrate a VE in a way, essentially invisible both for users of this VE and for external clients, using network services located inside VE. It still introduces a short delay in service, required for actual checkpoint/restore of the processes, but this delay is indistinguishable from a short interruption of network connectivity.

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Re: Backup / restore /migrate tasks [message #6189 is a reply to message #6107]

Mon, 11 September 2006 14:10

dagr
Messages: 83
Registered: February 2006

Member

thanks - that helped

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