On Monday November 17, bluca@comedia.it wrote: > > Really weird idea: please do not do it on real data. > You will probably shoot yourself doing this > - Switch the disks one by one. > - When you are over create a new raid5 over the existing one (keeping the > same settings for stripe size and parity algo) > - Resize the filesystem. > Not so weird - it is exactly what I was going to suggest. Providing you get the chunk size, parity algoithm and device order right, and use "--force" to make sure mdadm doesn't re-arrange the devices on on it should work perfectly. Somewhere low-down on my todo list for raid is allowing this to be done on-line (mdadm /dev/md0 --size=max). It is right along side allowing the number of live devices in a raid1 to be changed (mdadm /dev/md1 --devices=3) and adding devices to a linear array (mdadm /dev/md2 --add /dev/sdd). NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
