>>> "Ulrich Windl" <ulrich.wi...@rz.uni-regensburg.de> schrieb am 01.07.2011 um
16:32 in Nachricht <4e0df69b020000a100006...@gwsmtp1.uni-regensburg.de>:
> Hi!
> 
> I don't know if this is an isse of mdadm in SLES11 SP1, but we had the 
> situation where a RAID1 ended up with one leg, when a manual "mdadm --re-add 
> /dev/mdX /dev/disk/..." worked.
> 
> Inspecting the RA, I guess it also should have tried that (a bit 
> differently):
> 
>                 ocf_log info "Attempting recovery sequence to re-add devices 
> on
> $MDDEV:"
>                 $MDADM $MDDEV --fail detached
>                 $MDADM $MDDEV --remove failed
>                 $MDADM $MDDEV --re-add missing
>                 # TODO: At this stage, there's nothing to actually do
>                 # here. Either this worked or it did not.
> 
> How was the problem created? One of the RAID legs had been presented to only 
> one of three cluster nodes (because nobody expected the software to activate 
> the RAID elsewhere). Obviously the cluster tried to activate the RAID on any 
> node, where if failed in 2 of 3 cases. But when the RAID came back to the 
> boog node, the RAID remained incomplete.
 ^good^ I wanted to write (time to go home)

> 
> I thought, I'd let you know. I have fixed the presentation in the meantime.
> 
> Regards,
> Ulrich
> 
> 
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> 

 
 

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