On Wednesday 23 May 2012 14.23.31 Alan McKay wrote: > Hey folks, ... > I used 'arcconf' to create a big RAID60 out of (see below). > > But then I mount it and it is way too small > This should be about 20TB : ... > /dev/sdb1 186G 60M 176G 1% /mnt/J4400-1 ... > Here is how I created it : > > ./arcconf create 1 logicaldrive name J4400-1-RAID60 max 60 0 0 0 1 0 2 ... > Make 1 big partition : > > sfdisk /dev/sdb <<EOF > ,,L > EOF This is the problem, various filesystems issues are irrelevant. sfdisk only uses "the old" msdos type partition table and this does not support >2T devices. It is unfortunate that it lacks proper error checking and warnings... You should do one of: 1) don't use partitioning (mkfs directly on /dev/sdb) 2) use LVM (pvcreate /dev/sdb ...) 3) use a GPT type partition table (parted /dev/sdb or similar) After this you'll have to tackle the current 16T limit for ext4 and other filesystem related oddities.. /Peter -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: <http://lists.centos.org/pipermail/centos/attachments/20120525/eba54ec0/attachment-0005.sig>