Re: trouble adding spare

On Wed, Jan 21, 2009 at 10:21 AM, Max Waterman
[off-list ref] wrote:

Someone else's post prompted me to try :

$ sudo /sbin/mdadm --detail --scan
ARRAY /dev/md2 level=raid5 num-devices=6 metadata=00.90 spares=2
UUID=15bfec75:595ac793:0914f8ee:862effd8

and use that in mdadm.conf instead of the output of :

~$ sudo /sbin/mdadm --examine --scan
ARRAY /dev/md2 level=raid5 num-devices=6
UUID=15bfec75:595ac793:0914f8ee:862effd8
 spares=2

This fixes my problem of the second spare drive not being added. I'm not
sure why.

However, mdadm now gives me a 'message' :

mdadm: metadata format 00.90 unknown, ignored.

What's this about? Anything to worry about?

Change it to metadata=0.90 instead of metadata=00.90 & it should work
w/out the error message.  It would probably be good if mdadm.conf
and/or mdadm --detail --scan dropped leading zeros.


Conway S. Smith