On 5-Mar-2009, at 19:22, Milo Velimirović wrote:
> After you unmount /dev/backup run an fsck against it. You may need to
> tell it to use an alternate superblock if the default one is
> corrupted or unavailable. i.e.,
$ fsck /dev/ad1s1c
** /dev/ad1s1c (NO WRITE)
** Last Mounted on /backup
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
2095403 files, 55964850 used, 19719503 free (114975 frags, 2450566
blocks, 0.2% fragmentation)
$ tunefs -m 1 -o space /dev/ad1s1c
tunefs: minimum percentage of free space changes from 8% to 1%
tunefs: should optimize for space with minfree < 8%
tunefs: optimization preference changes from time to space
tunefs: /dev/ad1s1c: failed to write superblock
$
I will try dropping to single-user mode this weekend and see if that
makes a difference.
> The following flags are interpreted by fsck.
>
> -b Use the block specified immediately after the flag
Not on FreeBSD 6.2-RELEASE they aren't.
> Or take a look at it with Disk Utility. It should pick the right
> utilities to run on the partition appropriate to the filesystem on it.
See above, TINAM (this is not a Mac); OS X doesn't do this crap:
/dev/disk4s2 465Gi 101Gi 364Gi 22% /Volumes/Cerebus
101+364=465, no missing 8%, 5%, or even 1%.
--
Clarke's Law: Sufficiently advanced technology is indistinguishable
from magic
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