On Wednesday November 9, andy@xxxxxxxxxx wrote: > > But what's the easiest way to do this? I can't start creating > partitions at the end can I? Or maybe I can, in something other > than fdisk. You can create partitions in any way you like. cfdisk is quite good at making this ... not trivial, but not hard. Create a tiny "1s" partition at the Beginning of the device. This will be sdb1. Create another tiny partition - sdb2 Change the Units to 'sectors'. Create another partition - sdb3 of the desired size at the End. - put an 's' at the end of the number to indicate sectors 218837432s Then delete sdb2 and create a new sdb2 using all the space. Then add sdb3 to the raid5, and make a new raid0 array with sd[abcd]2. This will use all of the space of all those partitions even though they aren't the same size. > > Oh, and, will I need to do anything special (like shrink sd[acd]2) > when trying to rebuild the stripe (md1) with the smaller patition > from sdb? No. raid0 (like linear) does not need all the devices to be the same size - it makes use of all available space. > > Cheers, > Andy > > [1] Did it like that because I wanted /boot on a RAID 1, but I keep it > read only most of the time and didn't see the point in having it > a 4-way RAID 1. But then, there isn't much to do with two > 70-odd MB disk partitions so I made them hot spares. You could have included them in the raid0, but having a least one hot-spare for boot is a good idea. 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
