Thanks for the link. It's a good idea and should certainly reduce the client impact. On the client side in V4 it should provide the same benefits. I'll look at whether I can include this on the server side (but probably not for 4.0.0).
Craig Barratt wrote: > - rsync-bpc-3.0.9.1.tar.gz: a modified rsync that
> runs on the server that has a shim layer that
> interfaces directly to the BackupPC file system.
Not sure where this modified rsync version will be used, but do you know rsync's fadvise patch?
We are currently testing the patched rsync version with BPC and the results are very good. Without the patch, backing up a server every night will cause some performance penalty to the backed up server, because rsync will fill up the server's page cache with the backed up data, but this will blow out the application's data.
With the patch, we don't notice the backup job on most servers, because the application data is all in memory and I/O is free for rsync.
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