On Mar 5, 2009, at 7:58 PM, LuKreme wrote:
> Ideas?
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.,
The following flags are interpreted by fsck.
-b Use the block specified immediately after the flag
as the
super block for the filesystem. Block 32 is
usually an
alternate super block.
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.
>
> On Mar 5, 2009, at 12:55, LuKreme <[email protected]> wrote:
> $ df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/ad0s1 140G 30G 99G 23% /
>> devfs 1.0K 1.0K 0B 100% /dev
>> /dev/ad1s1c 144G 107G 26G 80% /backup
>> devfs 1.0K 1.0K 0B 100% /var/named/dev
>> $ umount /backup
>> $ df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/ad0s1 140G 30G 99G 23% /
>> devfs 1.0K 1.0K 0B 100% /dev
>> devfs 1.0K 1.0K 0B 100% /var/named/dev
>> $ 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
>> $ df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/ad0s1 140G 30G 99G 23% /
>> devfs 1.0K 1.0K 0B 100% /dev
>> devfs 1.0K 1.0K 0B 100% /var/named/dev
>>
>> WTF?
>>
>> $ mount -a
>> $ df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/ad0s1 140G 30G 99G 23% /
>> devfs 1.0K 1.0K 0B 100% /dev
>> devfs 1.0K 1.0K 0B 100% /var/named/dev
>> /dev/ad1s1c 144G 107G 26G 80% /backup
>>
>> --
>> Hamburgers. The cornerstone of any nutritious breakfast.
Doughnuts and Mountain Dew -- because breakfast is the most important
meal of the day.
>>
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