[CentOS] Software RAID1 Failure Help

Fri Feb 7 23:51:46 UTC 2014
John R Pierce <pierce at hogranch.com>

On 2/7/2014 3:47 PM, Chris Stone wrote:
> Sure, replace the bad drive and rebuild build the mirror. Or add 2 drives,
> using one to replace the bad one and the other as a hot spare. Then if one
> of the 2 drives in the mirror fails again, the hot spare will take over for
> it.

one thing thats always bugged me about md raid when its mirrored per 
partition...     say you have /dev/sda{1,2,3} mirrored with 
/dev/sdb{1,2,3} ... if /dev/sdb2 goes south with too many errors and 
mdraid fails it, will it know that b{1,3} are also on the same physical 
drive and should be failed, or will it wait til it gets errors on them, too?

john r pierce                                      37N 122W
somewhere on the middle of the left coast