Re: Care and feeding of RAID?

[Paul Waldo <pwaldo@waldoware.com>]

Gordon Henderson wrote:
> On Tue, 5 Sep 2006, Steve Cousins wrote:
[snip]
> and my weekly badblocks script looks like:
> 
> #!/bin/csh
> 
> echo "`uname -n`: Badblocks test starting at [`date`]"
> 
> foreach disk ( a c )
>   foreach partition ( 1 2 3 5 6 )
>     echo -n "hd$disk${partition}: "
>     badblocks -c 128 /dev/hd$disk$partition
>   end
>   echo ""
> end
> 
> echo "`uname -n`: Badblocks test   ending at [`date`]"
[snip]

Maybe I'm missing something, but are these partitions mounted?  Here's what I 
get when I do this on a mounted partition:

[root@paul ~]# badblocks -nsv /dev/md0
/dev/md0 is mounted; it's not safe to run badblocks!

If you are running RAID, is it safe to run badblocks on the underlying partition?