Date: Wed, 18 Apr 2007 19:03:03 -0500 From: CyberLeo Kitsana <cyberleo@cyberleo.net> To: Jerry McAllister <jerrymc@msu.edu>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: dump/restore corrupted filesystems Message-ID: <4626B1CE.4080904@cyberleo.net> In-Reply-To: <20070418212243.GA59177@gizmo.acns.msu.edu> References: <4623843B.40006@cyberleo.net> <20070416170825.GA91459@slackbox.xs4all.nl> <462449C2.9000302@cyberleo.net> <20070416222437.GA1924@slackbox.xs4all.nl> <46268919.1080301@cyberleo.net> <20070418212243.GA59177@gizmo.acns.msu.edu>
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Jerry McAllister wrote: >> Smart says that the drives are fine, as does the manufacturer's disk >> fitness tools. All the files that are readable contain correct data, but >> the files that are corrupt are totally not readable, and cannot even be >> removed manually: > > Given that, I would try to make a dump(8) of it. If dump dies on > a particular file, try to exclude that file from the dump either by > rm-ing it or setting a nodump flag and try again. You may not > actually be able to do the rm or nodump flag though if you cannot > mount it with write permission. You might be able to force it > mounted without doing the fsck in single user. > > Note that tar allows you to specify exclusions. I usually don't > suggest using tar for mass moves because it has weaknesses with > hard links and might also not transfer flags and permissions > correctly. But, if tar is what it takes, then use it. Force-mounting the filesystem works just fine. It's when I try to modify any munged file that it panics the box, with ufs_dirbad or somesuch. I have been using rsync to recover readable data, which handles hard-links, permissions, sparse files, and et cetera. I figure it's best, as that's what is used to drop the differential backups onto the box in the first place. -- Fuzzy love, -CyberLeo Technical Administrator CyberLeo.Net Webhosting http://www.CyberLeo.Net <CyberLeo@CyberLeo.Net> Furry Peace! - http://www.fur.com/peace/
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