From: grog@lemis.com (Greg 'groggy' Lehey)
Subject: [TUHS] dump(8) compatibility (was: Backup software (was: Irwin 285))
Date: Mon, 15 Feb 2010 12:19:14 +1100 [thread overview]
Message-ID: <20100215011914.GZ62998@dereel.lemis.com> (raw)
In-Reply-To: <201001282027.o0SKRBIs001465@anduin.eldar.org>
On Thursday, 28 January 2010 at 15:27:11 -0500, Brad Spencer wrote:
>
> On Thursday, 21 January 2010 at 12:44:49 -0800, Corey Lindsly wrote:
>>
>>> Sure. I know. Big SATA drives are cheap over here as well, like
>>> 1.5T for 110 EURO or somesuch. I just happen to own a LTO3 and
>>> enough tapes already, so the economics are not the issue. Just need
>>> to have a proper piece of open source backup software that runs on
>>> FreeBSD.
>>
>> And what, precisely, is the problem with using dump?
>> It will span multiple tapes.
>
> dump is non-portable. In general, you can only restore to the same
> kind of system as you write to.
>
> Not entirely true... dump and restore in NetBSD seems to be portable
> among NetBSD systems at least.
>
> I don't know how far this goes, if it is just NetBSD, or something
> inherent to all 4.4BSD derived systems.
I've just tried to list a FreeBSD 7.2 dump on NetBSD 5.0.1:
Extract directories from tape
Mangled directory: reclen less than DIRSIZ (12 < 16)
(many repetitions)
Mangled directory: reclen less than DIRSIZ (12 < 16)
. is not on the tape
Root directory is not on tape
abort? [yn] y
Interestingly, FreeBSD restore can understand the NetBSD dump. But
it's not even backwards compatible between major releases of FreeBSD
even, so this might be the same issue as with FreeBSD. Either way, I
don't think it's a good idea to count on it for NetBSD in the future.
Greg
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next prev parent reply other threads:[~2010-02-15 1:19 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-21 10:26 [TUHS] Irwin 285 Sergey Lapin
2010-01-21 10:51 ` Brantley Coile
2010-01-21 11:19 ` Jochen Kunz
2010-01-21 11:32 ` Wilko Bulte
2010-01-21 12:07 ` Sergey Lapin
2010-01-21 12:37 ` Jason Stevens
2010-01-21 13:02 ` Wilko Bulte
2010-01-21 16:50 ` Jochen Kunz
2010-01-21 17:11 ` Jochen Kunz
2010-01-21 17:37 ` M. Warner Losh
2010-01-21 17:41 ` Sergey Lapin
2010-01-21 19:00 ` Jochen Kunz
2010-01-21 19:10 ` Al Kossow
2010-01-21 19:36 ` Jochen Kunz
2010-01-21 19:41 ` Wilko Bulte
2010-01-21 19:45 ` John Cowan
2010-01-21 18:59 ` Wilko Bulte
2010-01-21 19:48 ` Jochen Kunz
2010-01-21 19:56 ` Wilko Bulte
2010-01-21 19:58 ` Larry McVoy
2010-01-21 20:00 ` Wilko Bulte
2010-01-21 20:11 ` Larry McVoy
2010-01-21 20:26 ` Jason Stevens
2010-01-21 20:41 ` Wilko Bulte
2010-01-21 20:44 ` Larry McVoy
2010-01-21 21:00 ` Wilko Bulte
2010-01-21 21:01 ` Larry McVoy
2010-01-21 21:36 ` lyricalnanoha
2010-01-21 22:15 ` Larry McVoy
2010-01-21 22:22 ` M. Warner Losh
2010-01-22 9:14 ` Jochen Kunz
2010-01-22 9:34 ` Wilko Bulte
2010-01-22 10:15 ` Jochen Kunz
2010-01-22 10:46 ` Wilko Bulte
2010-01-22 11:06 ` Jochen Kunz
2010-01-22 11:12 ` Wilko Bulte
2010-01-22 15:38 ` Larry McVoy
2010-01-22 16:52 ` Jochen Kunz
2010-01-22 16:55 ` Wilko Bulte
2010-01-21 20:46 ` Jason Stevens
2010-01-21 22:15 ` Aaron J. Grier
2010-01-21 22:57 ` Wilko Bulte
2010-01-21 20:36 ` Wilko Bulte
2010-01-21 20:44 ` Corey Lindsly
2010-01-21 21:45 ` Wilko Bulte
2010-01-22 0:36 ` [TUHS] Backup software (was: Irwin 285) Greg 'groggy' Lehey
2010-01-22 0:48 ` Jason Stevens
2010-01-28 20:27 ` Brad Spencer
2010-02-12 17:03 ` Tim Bradshaw
2010-02-15 1:19 ` Greg 'groggy' Lehey [this message]
2010-02-15 1:24 ` [TUHS] dump(8) compatibility (was: Backup software (was: Irwin 285)) Jason Stevens
2010-02-15 1:30 ` [TUHS] dump(8) compatibility M. Warner Losh
2010-02-15 2:27 ` Larry McVoy
2010-02-15 5:05 ` Warner Losh
2010-02-15 5:18 ` Jason Stevens
2010-01-21 20:33 ` [TUHS] Irwin 285 Jochen Kunz
2010-01-21 20:44 ` Wilko Bulte
2010-01-21 20:47 ` Larry McVoy
2010-01-22 9:23 ` Jochen Kunz
2010-01-22 9:32 ` Wilko Bulte
2010-01-22 0:38 ` [TUHS] Tape backups? (was: Irwin 285) Greg 'groggy' Lehey
2010-01-21 20:18 ` [TUHS] Irwin 285 Jochen Kunz
2010-01-21 12:05 ` Andrzej Popielewicz
2010-01-21 12:12 ` Sergey Lapin
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