shared spare

shared spare

[Bill Davidsen]

One of the things I like about the IBM ServeRAID controller is spare 
drive shared between two RAID groups. First to fail gets it. For 
software RAID is this at all in the future?

-- 
bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979

Re: shared spare

[Ross Vandegrift]

On Fri, Feb 10, 2006 at 05:49:13PM -0500, Bill Davidsen wrote:
> One of the things I like about the IBM ServeRAID controller is spare 
> drive shared between two RAID groups. First to fail gets it. For 
> software RAID is this at all in the future?

Nope, it's in the present!

Check through the man page for information on spare-groups.

-- 
Ross Vandegrift
ross@lug.udel.edu

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
	--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37

Re: shared spare

[Richard Scobie]

Bill Davidsen wrote:
> One of the things I like about the IBM ServeRAID controller is spare 
> drive shared between two RAID groups. First to fail gets it. For 
> software RAID is this at all in the future?

Hi Bill,

Unless I am misunderstanding something, software RAID has this already.
I have not used it but reading from the mdadm man page in the "Monitor
Mode" section:

"As  well  as  reporting  events, mdadm may move a spare drive from one
array to another if they are in the same spare-group and if the
destination array has a failed drive but not spares."

Regards,

Richard