Re: data replication how to
From: Yohann Desquerre (yohann.desquerre_at_wanadoo.fr)
Date: 07/31/04
- Previous message: Leif W: "Re: debian-installer: partman, limited; base-install failed, grave error?"
- In reply to: Ioannou Ioannis: "Re: data replication how to"
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Date: Sat, 31 Jul 2004 01:04:22 +0200 To: Ioannou Ioannis <iik1@hellespont.com>
Ioannou Ioannis wrote:
>On Thursday 29 July 2004 19:09, Yohann Desquerre wrote:
>
>
>>i think i would plug the 2 storage product and the debian into the
>>switch and then use unison to replicate the data (or do a snapshot)...
>>
>>
>
>unison is good for bidirectional replication (i.e. changes are happening in
>both storage devices).
>The other alternative (for unidirectional replication only) is rsync.
>The speed depends on the size (and the H/W). Sometime rsync is faster, but I
>think in your case unison may be better, it is amazing how fast it can check
>huge directories for changes.
>
>But mind also that unison has a problem with huge directories and zillions of
>files the first time (until the initial database is created). You have to do
>the replication part by part at least once, and the everything is ok. What I
>had to do in a similar situation was to use something like :
>
>root=/path/to/first/root
>root=/path/to/second/root
>
>path=firstDir
># path=secondDir
># path=thirdDir
># path=fourthDir
>
>etc, and sync segment by segment (each somethingDir small enough so that
>unison had no memory problems).
>As soon the database is created and unison went through of all the files at
>least once, you could trust it to do the job fast (depending of the H/W
>setup, maybe faster than your time contrains)
>
>
>
>
thanks for that i will try it !
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- Previous message: Leif W: "Re: debian-installer: partman, limited; base-install failed, grave error?"
- In reply to: Ioannou Ioannis: "Re: data replication how to"
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