On Monday January 24, rfu@xxxxxxxxxxxxxxxxxxxxxxxx wrote: > how can the existing raid setup be moved to the new disks > without data loss ? > > I guess it must be something like this: > > 1) physically remove first old drive > 2) physically add first new drive > 3) re-create partitions on new drive > 4) run raidhotadd for each partition > 5) wait until all partitions synced > 6) repeat with second drive Sounds good. > > the big question is: since the drive geometry will definitely different > between old 60GB and new 80GB drive(s), how do the new partitions > have to be created on the new drive ? > - do they have to have exactly the same amount of blocks ? No. > - may they be bigger ? Yes (they cannot be smaller). However making the partitions bigger will not make the arrays bigger. If you are using a recent 2.6 kernel and mdadm 1.8.0, you can grow the array with mdadm --grow /dev/mdX --size=max You will then need to convince the filesystem in the array to make use of the extra space. Many filesystems do support such growth. Some even support on-line growth. NeilBrown - 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
