Loading a RAID array after OS crash Post: 302438454

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Homework and Emergencies Emergency UNIX and Linux Support Loading a RAID array after OS crash Post 302438454 by CRGreathouse on Monday 19th of July 2010 08:04:45 PM

07-19-2010

Registered User

Loading a RAID array after OS crash

One of my very old drive farm servers had an OS fault and can't boot now but I'd like to restore some files from it. I tried booting Ubuntu from a CD, but it couldn't see the drives -- possibly because they're RAIDed together. Is there a good way to get at my files?

The data in question is a series of old genotyping arrays (basically extremely high-res photos and some associated data files). The RAID level is just 1+0, I think. My predecessor's notes say that the system was Debian Sarge, but I think it's actually some version of Xubuntu (the OS was probably upgraded without the notes being changed). I have all the passwords as well as physical access to the system, but I don't know much about the original setup (it was all 'the last guy').

Any help would be appreciated. I don't think the lab would be willing to pay for a hard drive restoration service (16 RAID drives would presumably be fairly expensive), but anything short of that may be fair game.

CRGreathouse

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raidfile.conf

RAIDFILE.CONF(5)						    Box Backup							  RAIDFILE.CONF(5)

NAME

       raidfile.conf - Userland RAID for Box Backup

SYNOPSIS

       /etc/box/raidfile.conf

DESCRIPTION

       The raidfile.conf is usually generated by raidfile-config(8) but may be manually edited if the store locations move or if more than one
       disc set is required.

       discX
	   Specifies a set of discs.

	   SetNumber
	       The set number of the RAID disc, referenced by each account.

	   BlockSize
	       The block size of the file system (usually 2048). Under BSD with FFS, set this to your file system's fragment size (most likely an
	       8th of the block size).

	   Dir0
	       The first directory in the RAID array.

	   Dir1
	       The second directory in the RAID array. If you do not wish to use the built-in RAID functionality, this field should be set to the
	       same as Dir0. You should not use the built-in RAID if you have a hardware RAID solution or if you're using another type of software
	       RAID (like md on Linux).

	   Dir2
	       The third directory in the RAID array. The same notes that apply to Dir2 also apply to Dir3.

FILES

       /etc/box/raidfile.conf

SEE ALSO

       raidfile-config(8), bbstored.conf(5)

AUTHORS

       Ben Summers

       Per Thomsen

       James O'Gorman

Box Backup 0.11 						    10/28/2011							  RAIDFILE.CONF(5)