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Date: Tue, 06 Jun 2006 14:57:08 +0200
From: Robin Elfrink <elfrink@introweb.nl>
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To: Eric Anderson <anderson@centtech.com>
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Cc: freebsd-isp@freebsd.org
Subject: Re: Recovery from disk+fs crash
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Eric Anderson wrote:

>>root@:~# fsck /dev/da0s1f
>>** /dev/da0s1f (NO WRITE)
>>cannot alloc 18446744067446403432 bytes for inphead


> Have you tried using fsck_ffs and specifying an alternate superblock? 
> (say 160)

Yes:

root@:~# fsck_ffs -b 160 /dev/da0s1f
Alternate super block location: 160
** /dev/da0s1f (NO WRITE)
cannot alloc 18446744067446403432 bytes for inphead

Same error. Something is so badly wrong that fsck wants to allocate a
very big amount of memory.

I more or less have given up on the illusion of getting data back (that
shows 'em, not letting me have a proper backup system), but still it's
annoying not knowing what is going on and how to fix it.


Robin