Re: Partition IDs in the New World TM

Russell King (rmk@arm.linux.org.uk)
Mon, 22 Jan 2001 22:42:06 +0000 (GMT)

Andrew Clausen writes:
> Why is this necessary? Can't the RAID drivers probe the device for
> signatures, the same way file systems do?

One possible problem I can see here is to do with removal of RAID. Think
of a RAID-1 array (2 or more disks containing identical data). The
partition can be validly identified as an ext2 filesystem. But wait, it
has a RAID superblock at the end.

How do we know if this superblock is current or not? After all, a mke2fs
on the device won't remove it. Yes, you could fill the partition with
zeros and start again, or you could just change the partition ID.

--
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html


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