why you zeroing hdd ? should you clear sdd? On 10/26/07, Greg Cormier <gcormier@xxxxxxxxx> 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. > > [root@zeus ~]# 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 > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Raz - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
