snapshot rsync dump/restore
I want to clone a FreeBSD system on another system. Say, Mondaymorning I use the dump(8) to make dumpfiles of all filesystems (dumpofroot.dmp, dumpofvar.dmp, ...tmp.dmp, ...usr.dmp, ...home.dmp ) on an external USB disk. The original system keeps running. Then Wednesday I setup FreeBSD on the new system, and use restore(8) to put the contents of my dumpfiles in the filesystems of that clone system. Then I still need to have the changes occured during Mondaymorning till Wednesdayafternoon on the original system, to be put in some way on the clone system, so that these are not lost. I was told one could do this using rsync and by using a snapshot it would even be faster (?) Is rsync save regarding soft-links ? How exactly would one best proceed? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: snapshot rsync dump/restore
n dhert wrote: I want to clone a FreeBSD system on another system. Say, Mondaymorning I use the dump(8) to make dumpfiles of all filesystems (dumpofroot.dmp, dumpofvar.dmp, ...tmp.dmp, ...usr.dmp, ...home.dmp ) on an external USB disk. The original system keeps running. Then Wednesday I setup FreeBSD on the new system, and use restore(8) to put the contents of my dumpfiles in the filesystems of that clone system. Then I still need to have the changes occured during Mondaymorning till Wednesdayafternoon on the original system, to be put in some way on the clone system, so that these are not lost. I was told one could do this using rsync and by using a snapshot it would even be faster (?) Is rsync save regarding soft-links ? How exactly would one best proceed? Presumably you did a level 0 dump to make your initial copy? Did you happen to use the -u flag to dump? ie. update /etc/dumpdates? If so, then you can just do an incremental dump of everything that has changed since. (This is standaard dump(1) functionality). So long as the filesystems on the second machine haven't changed in the meantime, you should be able to just restore the incremental dump on top of the original full backup to get things pretty much in synch. (Although watch out for files that were deleted between the full and the incremental dumps). If you didn't update /etc/dumpdates, then you can manually edit /etc/dumpdates to achieve the same result. Failing that, yes, you can use rsync to synchronise the filesystem state. You don't have to snapshot the original system, but it will help to get you a consistent point-in-time copy of the original server. To create a snapshotted and mounted directory tree see the section on 'snapshot' in mount(8). If you have several filesystems to rsync to the other machine, you should snapshot all of them and mount them one over the other in the same relation as the original filesystems. Then you can rsynch the whole snapshotted directory tree to your new server in one command. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW signature.asc Description: OpenPGP digital signature
Re: snapshot rsync dump/restore
On Thu, Dec 17, 2009 at 09:03:50AM +0100, n dhert wrote: I want to clone a FreeBSD system on another system. Say, Mondaymorning I use the dump(8) to make dumpfiles of all filesystems (dumpofroot.dmp, dumpofvar.dmp, ...tmp.dmp, ...usr.dmp, ...home.dmp ) on an external USB disk. Dumping /tmp is usually not necessary. The original system keeps running. Then Wednesday I setup FreeBSD on the new system, and use restore(8) to put the contents of my dumpfiles in the filesystems of that clone system. If the new system has different hardware, do not forget to adjust /boot/loader.conf, or build a custom kernel. And you should definitely edit /etc/rc.conf if even for the hostname. Then I still need to have the changes occured during Mondaymorning till Wednesdayafternoon on the original system, to be put in some way on the clone system, so that these are not lost. snip How exactly would one best proceed? I would recommend rsync. Is rsync save regarding soft-links ? Yes, if you use the '-a' flag. Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) pgpXk89WkOmYO.pgp Description: PGP signature
Re: snapshot rsync dump/restore
n dhert wrote: I was told one could do this using rsync and by using a snapshot it would even be faster (?) Also try http://rdiff-backup.nongnu.org/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
