Re: naming of md devices

[Daniel Pittman <daniel@rimspace.net>]

Nix <nix@esperi.org.uk> writes:
> On 22 Mar 2006, Dan Christensen prattled cheerily:

[...]

> Last I heard the Debian initramfs constructs RAID arrays by explicitly
> specifying the devices that make them up. This is, um, a bad idea: the
> first time a disk fails or your kernel renumbers them you're in
> *trouble*.

The initrd tool, which was the default option, does this, and it is a
bad idea.

The initramfs tool, which is mostly shared with Ubuntu, is less stupid.
It uses mdadm and a loop to scan through the devices found on the
machine and find what RAID levels are required, then builds the RAID
arrays with mdrun.

Unfortunately, it still doesn't transfer /etc/mdadm.conf to the
initramfs, resulting in arrays changing position when constructed, to my
annoyance.   So, stupid, but not as stupid as the oldest tools.

	Daniel
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