Re: [CentOS] fixing partition alignment ?

On Wed, Dec 12, 2012 at 9:36 AM, Laurent Wandrebeck l.wandrebeck@gmail.com wrote:

I've discovered that most of the hard drives used in our cluster got misaligned partitions, thus crippling perfs. Is there any way to fix that without having to delete/recreate properly aligned partitions, then format it and refill disks ? I'd be glad not to have to toy with moving several 10s of TB disk by disk :D (most disks are JBOD as we're using a fault tolerant network FS, moosefs not to name it). <insert your favorite search engine> wasn't helpful, unfortunately. Drives are ext4, driven by C6 x86_64.

Hmmm, might be a fun test of your fault-tolerance to remove disks one at a time and add them back empty with the partitions properly aligned. Maybe...