Date: Sun, 24 Feb 2002 16:38:34 -0800 (PST) From: David Wolfskill <david@catwhisker.org> To: freebsd-stable@FreeBSD.ORG, grg@ridley.unimelb.edu.au Subject: Re: Problem with dump and NFS Message-ID: <200202250038.g1P0cYS88766@bunrab.catwhisker.org> In-Reply-To: <20020225112022.F26357-100000@genesis.ridley.unimelb.edu.au>
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>Date: Mon, 25 Feb 2002 11:27:44 +1100 (EST) >From: Glen Gibb <grg@ridley.unimelb.edu.au> >I'm having problems backing up a file system mounted over NFS using dump. Ummm... to the best of my knowledge and belief, "problems" would be expected; indeed, I wouldn't expect it to work at all. Essentially, dump is tied (as I understand it) pretty much to the way UFS filesystems are constructed, and it accesses the raw filesystem. NFS does not present anything sufficiently close enough to a raw UFS filesystem for dump to work -- and since the underlying filesystem for an NFS-mounted filesystem need not be UFS at all, that should be expected. You have a couple of choices for doing a backup of a filesystem that physically resides on another system: * Go ahead and use dump, but run it on the system where the filesystem is local. Note that it is dump's standard output that is the backup image, so that is something that you can redirect as appropriate. * Use something that does not depend on UFS constructs, such as tar, pax, or cpio. This could be run on either the system where the filesystem is local, or on the NFS client. There may also be various proprietary backup programs that do the job to a greater or lesser extent, but it's been years since I dealt with those. Where I last worked, I set up Amanda (using "dump"); at home, I just use a home-grown Perl script (that also uses dump). Cheers, david (links to my resume at http://www.catwhisker.org/~david) -- David H. Wolfskill david@catwhisker.org I believe it would be irresponsible (and thus, unethical) for me to advise, recommend, or support the use of any product that is or depends on any Microsoft product for any purpose other than personal amusement. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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