Re: [CentOS] mdadm size issues

Nathan Norton wrote:

Hi,

I am trying to create a 10 drive raid6 array. OS is Centos 5.3 (64 Bit)

thats way too big of a single raid stripe set. rebuilding that when a drive fails will take days, maybe even weeks.

a volume that big (8*2TB == 16TB) will need to be partitioned as GPT rather than MBR.

a 16TB file system will be unwieldy when something goes sideways and it requires a FSCK or similar.

your output *looks* like its built and its busy striping. I'd wait about 12 hours and check the status again, then whatever % its done, take (1 / that fraction) times the number of hours so far, and thats how long it will take to complete, eg, if its 5% done after 12 hours, it will take (1/.05)*12 hours = 10 days to complete