large disk > 8 TB

[Michael Fuckner]

Lan Tran wrote:
> I have a Dell PERC 6/E controller connected to an external Dell MD1000
> storage, which I set up RAID 6 for.  The RAID BIOS reports 8.5 TB.  I
> installed 7BETA4 amd64 and Sysinstall/dmesg.boot detects this correctly:
> mfid1: <MFI Logical Disk> on mfi1
> mfid1: 8578560MB (17568890880 sectors) RAID volume 'raid6' is optimal"
> 
> However, after I created a zfs zpool on this device it only shows 185
> GB. # zpool create tank /dev/mfid1s1d
> # zpool list
> NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
> tank                    185G    111K    185G     0%  ONLINE     -
> 
> also with 'dh':
> # df -h tank
> Filesystem    Size    Used   Avail Capacity  Mounted on
> tank          182G      0B    182G     0%    /tank
> 

The main purpose of ZFS is doing Software raid (which is even faster
than HW Raid nowadays).

You should export all disks seperately to the OS- and then you don't
have the 4GB limit wrapping the size to 185GB.

Regards,
  Michael