Janek Kozicki wrote: > Hello, > > I just created a new array /dev/md1 like this: > > mdadm --create --verbose /dev/md1 --chunk=64 --level=raid5 \ > --metadata=1.1 --bitmap=internal \ > --raid-devices=3 /dev/hdc2 /dev/sda2 missing > > > But later I changed my mind, and I wanted to use chunk 128. Do I need > to delete this array somehow first, or can I just create an array > again (overwriting the current one)? How much later? This will, of course, destroy any data on the array (!) and you'll need to mkfs again... To answer the question though: just run mdadm again to create a new array with new parameters. I think the only time you need to 'delete' an array before creating a new one is if you change the superblock version since it quietly writes different superblocks to different disk locations you may end up with 2 superblocks on the disk and then you get confusion :) (I'm not sure if mdadm is clever about this though...) Also, if you don't mind me asking: why did you choose version 1.1 for the metadata/superblock version? David - 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
