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