How to map bad blocks on a scsi disk?

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3 total messages Started by Larry Fahnoe Fri, 14 Aug 1992 02:20

#736

Author: Larry Fahnoe
Date: Fri, 14 Aug 1992 02:20

15 lines
1149 bytes

I've recently run into my first disk errors on my cube's scsi disk and am
looking for ways to map them to a bad block area on the drive and out of
the file system.  I've looked at disk(8) but this does not seem to offer a
means to do what I wish unless the verify option would work--since this is
my only disk, I'd rather not learn about this by experimentation. 

Any other utilities out there to help me out here?  NeXT's sysadmin manual
and the various NeXT answers that I have do not seem to point out anything.

--Larry

-- 
Larry Fahnoe                        Cellular One
612/832-7616                        7900 S. Xerxes Ave, Suite 301
lfahnoe@kegworks.mn.org             Bloomington, MN  55431

Re: How to map bad blocks on a scsi disk?

#764

Author: Larry Fahnoe
Date: Sat, 15 Aug 1992 00:51

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1519 bytes

Last eve I wrote about disk problems:
>I've recently run into my first disk errors on my cube's scsi disk and am
>looking for ways to map them to a bad block area on the drive and out of
>the file system.  I've looked at disk(8) but this does not seem to offer a

Vince DeMarco <vince@whatnxt.cuc.ab.ca> sent me mail suggesting the reasb
utility that he'd ftp'd from NeXT; I got it and it worked.  Not being the
trusting sort, I did recompile before running it.

My system is still running OS 2.0, and the drive in question is a Segate
Wren VI.  Robert Lutwak <robert@neon.mit.edu> wrote me saying that he had
tried the same program on his Wren VII, but with no luck.  Robert did not
say what version of the OS he was running, and I'm not sure that it matters.

FTP information:
   Host: next.com
   Location: /pub/Misc/Utilities/reasb/*

--Larry

-- 
Larry Fahnoe                        Cellular One
612/832-7616                        7900 S. Xerxes Ave, Suite 301
lfahnoe@kegworks.mn.org             Bloomington, MN  55431

Re: How to map bad blocks on a scsi disk?

#798

Author: Jiro Nakamura
Date: Sat, 15 Aug 1992 03:32

24 lines
1410 bytes

In article <1992Aug14.022045.3738@kegworks.mn.org> lfahnoe@kegworks.mn.org  
(Larry Fahnoe) writes:
> I've recently run into my first disk errors on my cube's scsi disk and  
am
> looking for ways to map them to a bad block area on the drive and out of
> the file system.  

Larry -
	We've been developing an application that does exactly what you  
want. It's called SCSI Reassign Blocks and it does SCSI level bad block  
reassignment. It only works on drives that have allocated spare blocks  
during the initialization process.
	Unfortunately, we were burned very badly by our beta testers who  
did not return any evaluations on our software so we have decided to not  
continue further beta testing.
	Hopefully the product should be out by the end of the year, if  
that's any consolence...

	Jiro Nakamura
	NeXT R&D / Focal Point Computer, Inc.
-- 
Jiro Nakamura				jiro@shaman.com (NeXTmail)
NeXTwatch / Technical Editor		76711,542 (CIS)
The Shaman Group			+1 607 277-1440 (Voice/Fax)

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