[CentOS] Software RAID complete drives or individual partitions
Les Mikesell
lesmikesell at gmail.comWed Mar 6 21:12:26 UTC 2013
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On Wed, Mar 6, 2013 at 2:42 PM, John R Pierce <pierce at hogranch.com> wrote: >> AFAIK you need to use a GPT for partitions with >2TB ... > > you need GPT to partition devices larger than 2TB, regardless of the > parittion size. > > me, I use parted.... > > # parted /dev/sdc "label gpt" > # parted /dev/sdc -a none "mkpart primary 512s -1s" > > to make a single full disk partition that starts at sector 512, which is > 256K bytes, which is usually a decent boundary for SSDs, large raids, > and other such devices. Large drives often have 4k sectors - don't you want a 1M offset to make sure the partition start is aligned? Gparted seems to do that by default. Also, is it possible to make the raid auto-assemble at boot like smaller ones do? I had to put an ARRAY entry into /etc/mdadm.conf with the devices but I think someone advised doing "set <partition number> raid on" in parted. -- Les Mikesell lesmikesell at gmail.com
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