Re: Unable to mount XFS (3Ware).

["Ken D'Ambrosio" <kend@xanoptix.com>]

On Mon, 2002-03-11 at 07:59, Eric Sandeen wrote:
> On 11 Mar 2002, Ken D'Ambrosio wrote:
> 
> > Howdy, all.  I created a 1 TB 3Ware RAID today, and everything works
> > like a charm... until I try to mount it:
[...]
> What does your syslog say?  That will have the real error information.

Wow -- hadn't known that!  Here's what it shows:
Mar 11 09:03:05 nebula kernel: XFS: SB sanity check 2 failed
Mar 11 09:03:05 nebula kernel: XFS: SB validate failed

I found this link on Google:
http://oss.sgi.com/projects/xfs/mail_archive/0107/msg00884.html

So, as a pre-emptive strike, here's the output of 
"xfs_db -c sb -c p /dev/sda1":

magicnum = 0x58465342
blocksize = 4096
dblocks = 240123904
rblocks = 0
rextents = 0
uuid = 236ac92d-d4ca-446a-83da-800f2edf0d0a
logstart = 120586244
rootino = 128
rbmino = 129
rsumino = 130
rextsize = 16
agblocks = 1048576
agcount = 230
rbmblocks = 0
logblocks = 29312
versionnum = 0x2084
sectsize = 512
inodesize = 256
inopblock = 16
fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
blocklog = 12
sectlog = 9
inodelog = 8
inopblog = 4
agblklog = 20
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 64
ifree = 61
fdblocks = 240093668
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 0
width = 0
dirblklog = 0

There's absolutely -no- data on this drive, so I'll gladly do whatever
you ask me to.  In desperation, prior to my most recent attempt to mkfs
it, I did a "dd if=/dev/zero of=/sda bs=1024 count=1024", and it still
failed in exactly the same manner, so I don't think it's anything in the
partition table or the like...

Thanks much,

-Ken