(original article)

Re: Converting RAID5 to RAID6 and other shape changing in md/raid

29 November 2010, 03:17 UTC

Is there any reason why a chunk-size change would be significantly slower than a resync or grow command? I am changing from a chunk of 128 to 256 on a 10TB array. It's going at about 3MB/s versus my usually speed of at least 30MB/s. It's using a backup file which is only 41MB, but it is saved on a 300GB 10k Raptor drive, so it should be able to do faster than 3MB/s, I'd think.