6/11/06, Rakhesh Sasidharan <rakheshster (AT) gmail (DOT) comwrote:
/dev/wd0g 4786774 4294886268 4628464 188894% /mnt/nbsd

Any ideas why /dev/wd0g is showing up with that weird capacity and sizes?

Here's the relevant entry for it from my disklabel:

g: 9724176 21430710 4.2BSD 2048 16384 27968 # Cyl 21260*- 30907*

The file system is fine -- I can do "ls -al /mnt/nbsd" and it gives me
all the files. Its my NetBSD root partition, and was formatted through
that.

I thought maybe something's corrupt, and so tried doing an "fsck -f
/dev/wd0g". I get the following:

** /dev/rwd0g
** File system is already clean
cannot alloc 4294966956 bytes for inphead

I figure doing an fsck might set things right, but the above error stops me.

The partition sizes show up fine under NetBSD btw. I even tried doing
an "fsck -f" from NetBSD in single user mode, it said everything's
fine. =/

various bsds have changed the superblock over time. they are no
longer the same. running fsck on a different filesystem is a good way
to break it.

I thought maybe something's corrupt, and so tried doing an "fsck -f
/dev/wd0g". I get the following:

** /dev/rwd0g
** File system is already clean
cannot alloc 4294966956 bytes for inphead

I figure doing an fsck might set things right, but the above error stops me.

The partition sizes show up fine under NetBSD btw. I even tried doing
an "fsck -f" from NetBSD in single user mode, it said everything's
fine. =/

BTW, this weird output from df, is it something I can ignore and go
on? As in, if I mount that filesystem read-write and use it, could it
result in some data corruption happening?

Its my NetBSD root partition, and NetBSD shows it fine ("df" output,
"fsck", general usage, etc etc). BSD too mounts it fine read-write
and I've successfully written data to it without any corruption
so its safe to ignore the weird df sizes and assume things will be ok
right? :)

Thanks,
Rakhesh

Please read again what Ted wrote.
-p.

He also said the superblocks are different, so you can't expect anything
(df, mount, fsck) to work.
-p.