why you zeroing hdd ?  should you clear sdd?

On 10/26/07, Greg Cormier <[EMAIL PROTECTED]> wrote:
> Can someone help me understand superblocks and MD a little bit?
>
> I've got a raid5 array with 3 disks - sdb1, sdc1, sdd1.
>
> --examine on these 3 drives shows correct information.
>
>
> However, if I also examine the raw disk devices, sdb and sdd, they
> also appear to have superblocks with some semi valid looking
> information. sdc has no superblock.
>
> How can I clear these? If I unmount my raid, stop md0, it won't clear it.
>
> [EMAIL PROTECTED] ~]# mdadm --zero-superblock /dev/hdd
> mdadm: Couldn't open /dev/hdd for write - not zeroing
>
> I'd like to rule out these oddities before I start on my next
> troubleshooting of why my array rebuilds every time I reboot :)
>
> Thanks,
> Greg
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-- 
Raz
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