[SunRescue] HELP!!! My /opt slice just died!

[Pullig]

Use your numbers.  You can get the correct backup superblock by running
newfs with a switch.(-N?) Read the man pages carefully or you will rebuild
your filesystem.  If I get a chance I'll look in the man pages for the
correct switch.

-
Bruce Pullig
UNIX/NetWare Support
CSC Midland, Texas 
(915) 686-5517
ETN: 644-5517
bruce.a.pullig at usa.conoco.com
bpullig at csc.com


> -----Original Message-----
> From:	Mike Hebel [SMTP:druaga at pmail.net]
> Sent:	Friday, October 20, 2000 10:59 AM
> To:	rescue at sunhelp.org
> Subject:	RE: [SunRescue] HELP!!! My /opt slice just died!
> 
> Thanks!
> 
> I do have a question though - you said a random base-2 number (64, 128,
> etc.) but the newfs -Nv came up with numbers listed as super-block backups
> at 32, 97376, 194720, etc. in that exact order. Does this mean that my
> slice
> is slightly different and I should use those numbers?  (32 does not work
> BTW.)
> 
> (A slightly calmer)
> Mike Hebel
> 
> -----Original Message-----
> From: rescue-admin at sunhelp.org [mailto:rescue-admin at sunhelp.org]On
> Behalf Of Jonathan Katz
> Sent: Friday, October 20, 2000 10:50 AM
> To: Rescue at Sunhelp. Org
> Subject: Re: [SunRescue] HELP!!! My /opt slice just died!
> 
> 
> Hey dude, it isn't the end of the world:
> 
> # fsck -F ufs -o b=(random base-2 number) -y /dev/rdsk/c0t1d0s3
> 
> Simply put, the base superblock died. Good thing UFS provides for
> backups.
> 
> Try these numbers:
> 
> 32, 64, 128, 32768, 65536, etc....
> 
> On Fri, 20 Oct 2000, Mike Hebel wrote:
> 
> :Just a few minutes ago I rebooted my SS5 and the /opt slice didn't come
> up.
> :(Solaris 2.6)
> :fsck gives me:
> :** /dev/rdsk/c0t1d0s3
> :BAD SUPER BLOCK: MAGIC NUMBER WRONG
> :USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
> :eg. fsck [-F ufs] -o b=# [special ...]
> :where # is the alternate super block. SEE fsck_ufs(1M)
> :
> :I looked at the man(1) page for fsck_ufs and followed the newfs -Nv
> :instructions and now have a whole buttload (still no definition yet) of
> :super-block numbers on the screen.
> :
> :Where the heck do I go from here?
> :
> :Needless to say I'm panicing just a little.  It's not that I would have
> to
> :re-load the machine it's just that I would like to not have to go through
> :the CAD software validation crap again.
> :
> :Any help would be appreciated.
> :
> :Signed,
> :
> :Chicken with it's head cut off.  (Mike Hebel)
> :
> :_______________________________________________
> :Rescue maillist  -  Rescue at sunhelp.org
> :http://www.sunhelp.org/mailman/listinfo/rescue
> :
> 
> --
> Jonathan Katz
> e-mail: jon at jonworld.com
> website: http://jonworld.com
> proprietor: http://bachelor-cooking.com
> Cell: 317-698-4023 * Pager: 800-759-8888 1770869 * FAX: 530-688-5347
> 
> _______________________________________________
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> http://www.sunhelp.org/mailman/listinfo/rescue
> 
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