Date: Fri, 27 Apr 2012 16:35:10 +0200 From: Frank Staals <frank@fstaals.net> To: FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Synchronising jails Message-ID: <m2ehr9tf8h.fsf@fstaals.net>
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Hey Everyone, I'm looking for a way to synchronise two jails. More specifically, I would like to keep/maintain an exact copy of a given jail. As an example: Suppose I build a jail A on some system (in my particular case build with ezjail) , and I copy the jail into jail B on some other system (using tar, as is mentioned here: http://forums.freebsd.org/showthread.php?t=17813). Now stuff happens in Jail A, e.g. files change, new stuff is installed etc. I would like to propagate these changes to jail B, but since the transfer is over WAN I would like not to have to copy the entire jail again, just the stuff that has changed since the last backup. It is safe to assume nothing in Jail B changes: I basically want to maintain the exact copy so if something would happen to the system running Jail A I can immediately switch to jail B without much hassle. Normally I would say this a perfect use case for rsync. But as the aforementioned thread mentions ``scp or similar wont work to copy a jail'', and I consider rsync similar to scp, I am under the impression that rsync would not be usable in this situation. Can anyone shed some light on this, or suggest an alternative to synchronise the jails? Regards, -- - Frank
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