Date: Thu, 22 Jan 2015 09:38:12 -0800 From: Chris Maness <chris@chrismaness.com> To: markham breitbach <markhamb@corp.ssimicro.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Dump/Restore for system migration Message-ID: <CANnsUMEBg4svfTOySaPEOweExQ9h-j6dWgyCiTiaBiuFO-X8uQ@mail.gmail.com> In-Reply-To: <54C120E6.5090301@corp.ssimicro.com> References: <CANnsUMESEWsEXyyKwqyrnTMiEEYuExTgD0Z4NBuJF0cYSWDChQ@mail.gmail.com> <20150120010551.c17d9f50.freebsd@edvax.de> <54C120E6.5090301@corp.ssimicro.com>
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On Thu, Jan 22, 2015 at 8:10 AM, markham breitbach < markhamb@corp.ssimicro.com> wrote: > > On 2015-01-19 5:05 PM, Polytropon wrote: > >> Is there a better way to do this? > > Usually not, because dump + restore is _the_ way to do it. > > Except of course you're using ZFS. :-) > I have often done system migrations using rsync over ssh something like > > rsync -aHv / root@targethost:/ > > The great thing about rsync is that is will only transfer what it needs > to, so the first run will take a while to get pretty much everything > over. I then run a second time with a --delete switch to catch anything > that changed while the first run was going (A full sync of my mail store > can take well over 24 hours!). The second run will go much faster, > depending on the size of the initial run. Finally, I will mount RO, so > I know nothing is changing and run a final sync, which usually only > takes a couple of minutes, then light up the new system. > > If you already have a system dump/restore you could also just use rsync > as the final step to catch the stragglers. > > -Markham > > > That actually sounds pretty good. The target system has been running for a few days source system powered off. I am not sure if a rsync right now would do more harm than good. However, I do understand that rsync will ignore files that have already changed. I use rsync -vaur flags on most of my backups. Thanks, Chris
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