On Wed, Dec 08, 2010 at 11:28:13AM -0500, Stefan Monnier wrote: > > Neither will do Lotus Domino "live" backup, unless you can disable "writes" > > to the DB while the file is being copied. > > Not sure what is Lotus Domino, but to do live backups of a DB the > generic solution is to run the DB on top of something like LVM, so you > can create a snapshot of that partition and then backup the snapshot > without having to worry about concurrent writes.
Yeah. The trouble is that the data base changes during backup, and the backud-up data base needs to be as consistent as the live one. So you either have to find a way to stop writes to the data base (by, perhaps, shutting down the server) or use some mechanism within the data base software itself to accomplish the backup. It's hard to concieve of a professional-grade data base system that doesn't have some mechanism for this; if I had to deal with it, I'd look for the documentation of the data base software and find out what it is. Possibly it has a dumprestore mechanism, or an export/import mechanism. If there isn't one, and you can't shut down the server for backup, you may need to use a different data base system. If the data base system is not running, almost any backup software should be able to back it up ... unless the data base puts things like absolute disk addresses (as oposed to byte offsets within the file, or some such) into the data base. As for a linux solution, you might be able to boot a Linux system containing a backup program (such as rdiff-backup) from a USB thumb drive. -- hendrik _______________________________________________ mlug mailing list [email protected] https://listes.koumbit.net/cgi-bin/mailman/listinfo/mlug-listserv.mlug.ca
