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Re: bad primary superblock - bad magic number !!!

To: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Subject: Re: bad primary superblock - bad magic number !!!
From: Leo Davis <leo1783@xxxxxxxxx>
Date: Thu, 13 May 2010 01:38:25 -0700 (PDT)
Cc: xfs@xxxxxxxxxxx
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>Uh, you should try the other way around to avoid breaking the
>filesystem :

>dd if=/dev/cciss/c0d2 of=/dev/null bs=131072

>If no error occurs it should be OK.

i did that on all 4 luns
#dd if=/dev/cciss/c0d2 of=/dev/null bs=131072
796+1 records in
796+1 records out

#dd if=/dev/cciss/c0d0 of=/dev/null bs=131072
796+1 records in
796+1 records out

# dd if=/dev/cciss/c0d1 of=/dev/null bs=131072
68675509+1 records in
68675509+1 records out

## dd if=/dev/cciss/c0d3 of=/dev/null bs=131072
68675509+1 records in
68675509+1 records out

I also had a serial cable attached to my P800 controller to capture any traces..this is what that picked up:

/dev/cciss/c0d0: [05/12 13:38:28]Int13 BIOS unit 0x81 = CISS LUN 0x0000004000000
000
/dev/cciss/c0d0: [05/12 13:38:28]Int13 BIOS unit 0x82 = CISS LUN 0x0100004000000
000
/dev/cciss/c0d0: [05/12 13:38:28]Int13 BIOS unit 0x83 = CISS LUN 0x0200004000000
000
/dev/cciss/c0d0: [05/12 13:38:28]Int13 BIOS unit 0x84 = CISS LUN 0x0300004000000
000
/dev/cciss/c0d0: [05/13 09:13:03]PR=030fefb8h D245 Op=1c PLErr=04 IopErr=30 S=00
 STag=0x018d Has/dev/cciss/c0d0: hAddr=0x00e59c6c PLLog=0x31190000
/dev/cciss/c0d0: [05/13 09:21:04]Ctlr SCSI Request, Illegal CDB Opcode=0x3c
/dev/cciss/c0d0: [05/13 09:21:08]BadReq:CDB0-15=260008000000A200A000000000000000
,LUN=00000000L00/dev/cciss/c0d0: 000000H
/dev/cciss/c0d0: [05/13 09:21:08]BadReq:CDB0-15=260009000000A200A000000000000000
,LUN=00000000L00/dev/cciss/c0d0: 000000H
/dev/cciss/c0d0: [05/13 09:21:08]BadReq:CDB0-15=26000A000000A200A000000000000000
,LUN=00000000L00/dev/cciss/c0d0: 000000H
/dev/cciss/c0d0: [05/13 09:21:08]BadReq:CDB0-15=26000B000000A200A000000000000000
,LUN=00000000L00/dev/cciss/c0d0: 000000H
/dev/cciss/c0d0: [05/13 09:21:08]BadReq:CDB0-15=26000C000000A200A000000000000000
..the spew continues..


Any thoughts here?



From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
To: Leo Davis <leo1783@xxxxxxxxx>
Cc: xfs@xxxxxxxxxxx
Sent: Wed, May 12, 2010 1:29:02 PM
Subject: Re: bad primary superblock - bad magic number !!!

Le Wed, 12 May 2010 02:19:16 -0700 (PDT)
Leo Davis <leo1783@xxxxxxxxx> écrivait:

> havent had much success with testing the hard drives, tried mhdd &
> seatools with no luck yet.

What do you mean? Does the tools report any problem with the drives?

> So is I do a - dd if=/dev/random of=dev/cciss/c0d2 , that should fail
> and therby confirm that the drive or array has issues...do i make any
> sense here?

Uh, you should try the other way around to avoid breaking the
filesystem :

dd if=/dev/cciss/c0d2 of=/dev/null bs=131072

If no error occurs it should be OK.

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