On 7/21/2011 12:07 PM, Pol Hallen wrote: > Hello again :-) > > I removed all partitions of my disks and do: > > dd if=/dev/zero of=/dev/sdb bs=512 count=1 for all disks.. > > next, I created a new partition (non-fs data) starting of 64 like below (for > every devices) Why did you create partitions? The whole point of zeroing the first 512 bytes was to *eliminate* all the partitions... > Device Boot Start End Blocks Id System > /dev/sdb1 64 3907029167 1953514552 da Non-FS data > > created a new raid5 array: > > mdadm --create --verbose /dev/md0 --level=raid5 --raid-devices=5 /dev/sdb > /dev/sdc /dev/sdd /dev/sde /dev/sdf And now you create your array without using partitions... > cat /proc/mdstat > > md0 : active raid5 sdf[5] sde[3] sdd[2] sdc[1] sdb[0] > 7814051840 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/4] > [UUUU_] > [>....................] recovery = 0.3% (6625324/1953512960) > finish=971.1min speed=33411K/sec You created aligned partitions on all disks, and then did not use those partitions... > Now, I've 5 identical disks (2Tb WD) > > I've to wait rebuilding time after do new tests performance. > > The procedure that I've done is correct? No, you did not. It seems you merged bits and pieces from each array creation method. The array may still function properly. I've never tried what you've done here. Maybe others have the correct answer. -- Stan -- 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
