I can't say if this config is safe because I don't have any exper ieince with it. But, I can say that I use rsync to sync filesystems on two = boxes. They are ftp servers running openbsd using carp for auto failo= ver. The backup runs a script to sync a portion of it's filesyst= em with the master after checking to make sure it's still the backup. = The sync happens every 5 seconds over a Gbit private network between the t= wo. The data that is being synced is normally fairly small. = ; Has been working very well in production for about 9 or 10 months. = You might want to look into rsync as an alternative if it is practical for = the data you are wanting to replicate.
Colin [EMAIL PROTECTED] wrote: --= --- To:= freebsd-stable@freebsd.org From: Brian Candler <[EMAIL PROTECTED]&= gt; Sent by: [EMAIL PROTECTED] Date: 09/24/2005 09:21A= M Subject: geom_mirror and ggatec/d safe for filesystem replication? Consider the following scenario: - Machine 1 has a UFS filesy= stem on a block device. - It is mirrored to a block device on machine 2,= using geom_mirror and ggatec/ggated - Machine 2 mounts this = filesystem read only. My question is: is this last step safe? When an update occurs on machine 1, certain disk blocks will change "under the nose" of machine 2's mounts. Will all necessary caches be invalidat= ed? (e.g. block caches, inode caches) Or could this result in nasty beha= viour, up to and including panics? If so, is there a safer or bet= ter way of performing real-time filesystem replication? Thanks, Brian Candler. _________________ ______________________ 5F__= _____ freebsd-stable@freebsd.org mailing list [1]ht= tp://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscrib= e, send any mail to "[EMAIL PROTECTED]" References 1. file://localhost/tmp/3D"ht_______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"