rsync read block size

[Matthias Schniedermeyer]

On 26.05.2009 02:17, Andrew Gideon wrote:
> On Sun, 24 May 2009 00:45:09 +0200, Matthias Schniedermeyer wrote:
> 
> > On the other hand the quiescent and device/filesystem snapshotting
> > results in a rsyncable copy.
> 
> Another possibility is to have the files on a volume or file system that 
> supports snapshots.  That won't guarantee "quiescent", but it will 
> guarantee consistency (in the sense that the entire copy will be from a 
> given moment in time).

The biggest differenct between "quiescent/snapshot" and "just snappshot" 
is that most databases have to do a recover-step. But that shouldn't be 
a real problem for any ACID-compliant Database (Which should be just 
about any, excluding MySQL with MyISAM-Backend). The important thing is 
that all the data is from the same point in time.

It's a simulation of: "Ups, my power just failed". And ACID-complient 
databases are supposed to recover from that. :-)




Bis denn

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