Les Mikesell wrote:
Rich Rauenzahn wrote:
Rob Owens wrote:
My understanding is that with tar and smb, all files are downloaded (and
then discarded if they're already in the pool). Rsync is smart enough,
though, not to download files already in the pool.
-Rob
I was about to post the same thing. I moved/renamed some directories
around on the server I am backing up, and it is downloading the entire
file(s) again. Is there any interest in having BackupPC w/ rsync check
the pool first before downloading? Is there a reason behind not doing
it, or is it just something that hasn't been gotten to yet?
I don't think the remote rsync passes enough information to match the
pool hashes. The check is done against files of the same name/location
from the last backup and when matches are found there, only file
differences are transferred.
I'm looking through the sources now.. I assumed that somehow the
interface to File::RsyncP could return a checksum to BackupPC... can't
tell if they are that tightly bound or not. How/when does compression
occur? Ah, I see. It passes an I/O object into RsyncP. I think I'll
move this to the devel list =-).
Rich
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