Shachar Shemesh wrote:
>Galed Friedmann wrote: > >>I know that the DB files are being touched all the time and their last >>modification time is being >>changed, so maybe that is why rsync thinks the file has been changed, >>but it still supposed to >>transfer the deltas only ... > > >While you said it right, I believe you may have misunderstood what you >just said. rsync *transfers* the deltas. It needs both files, in their >entirety, to do that. > >In particular, when rsync transfers between two local files, it's just a >file copy. I think we can conclude that rsync is the wrong tool for this >job. > you're wrong. When you use rsync between 2 local files checksums are always calculated. > >>Does somebody have an idea of what I'm doing wrong? Has somebody ever >>experienced a transfer >>of a really large database (I'm speaking of few TBs)? > > >Use a snapshot filesystem. There is one inside LVM. This way, you shut >the server down, take the snapshot, put the server back up, and then >backup from the taken snapshot. This should be an almost instantaneous >operation, and you get the file at the time of the snapshot visible as >long as you want. > >Of course, the longer you keep it visible, the more space it's going to >take, but that's a tradeoff you can decide on as you wish. > > Shachar > >================================================================= >To unsubscribe, send mail to [EMAIL PROTECTED] with >the word "unsubscribe" in the message body, e.g., run the command >echo unsubscribe | mail [EMAIL PROTECTED] > > > ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
