Date: Tue, 20 Jan 2015 18:41:40 -0800 From: Chris Maness <chris@chrismaness.com> To: Chris Maness <chris@chrismaness.com>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Dump/Restore for system migration Message-ID: <CANnsUMEEm-qNRx7v5OZwjigvV4zP0GsO%2Bm_ONx_56jrRSyVPkQ@mail.gmail.com> In-Reply-To: <20150120190321.GB57651@slackbox.erewhon.home> References: <CANnsUMESEWsEXyyKwqyrnTMiEEYuExTgD0Z4NBuJF0cYSWDChQ@mail.gmail.com> <20150120190321.GB57651@slackbox.erewhon.home>
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On Tue, Jan 20, 2015 at 11:03 AM, Roland Smith <rsmith@xs4all.nl> wrote: > On Mon, Jan 19, 2015 at 10:50:28AM -0800, Chris Maness wrote: > > I have used dump/restore for system migration a couple of time and > noticed > > it is pretty good, but every once in a while it will miss or corrupt a > > file. Is there a better way to do this? I would imagine having a system > > mounted r/o would help, but this is not always possible. > > Nevertheless this is the best way to go. Especially if you use UFS with > journaled soft-updates (which is the default now, IIRC) where you cannot > use > snapshots. > > If I want to dump the filesystems on a machine, I use init(8) to go so > runlevel 1 (single user mode), where the root fs is mounted r/o and the > rest > is unmounted. I mount /tmp, and dump the rest of the filesystems to files > in > /tmp. That procedure has never failed for me. > > > Is there a way to > > check the deltas between systems manually after migration to see if any > > files need to be merged or copied. I would imagine the files that are in > > jeopardy are ones that are being written to while the dump is taking > > place. I had a file the keeps track of rss feeds end up missing on the > > target system. > > For copying files between running systems, I tend to use rsync(1). > If anything was being modified during the first run, a second run will > usually > fix it. > > Roland > -- > R.F.Smith http://rsmith.home.xs4all.nl/ > [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] > pgp: 5753 3324 1661 B0FE 8D93 FCED 40F6 D5DC A38A 33E0 (keyID: A38A33E0) > Awesome, Roland. That is perfect. That would definitely get all of the missed files. However, I have never been able to setup a direct login with root. I think I would need that to use rsync as root. Thanks, Chris
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