Re: swraid problem

On 14.12.2006, at 14:51, Ariën Huisken wrote:
...
>
> Looks like sdc3 is not used by md0, so I add it like:
> root@server ~# mdadm --add /dev/md0 /dev/sdc3
> Segmentation fault
>
> Now mdstat shows:
> root@server ~# cat /proc/mdstat
> Personalities : [raid1] [raid5]
> read_ahead 1024 sectors
> md0 : active raid1 sdc3[-1] sdb3[1] sda3[0]
>        2939776 blocks [3/2] [UU_]

-1, great stuff,
nope never seen before, but from the segfault I would guess mdadm  
neither ;)

check all hardware (drives/controller/ram/cpu) for hardware fault, I  
guess (as such fishy things happened here as well) that the box is  
slowly fading to death.

or, if the machine is important, make backups, and leave it alone.

my personal curiosity approach would be to wipe the sdc3 partition  
with zeros, to test the drive and get rid of a probably faulty  
signature (this could be done fast with mdadm as well (fix  
superblock)) and again trying to add the drive.

but that might be a bit too hard in the direction of
trial-n-error-trial-n-error-trial-n-error-trial-n-error-t....


matthias