On Saturday, June 18, 2011 10:00:25 PM Stephen Harris wrote:
> But space is running out; I wondering if the new 3Tb disks would work
> in this scenario; most importantly will 2.6.18-238.9.1.el5PAE see the
> whole disk? And also whether I need to be worried about 4Kbyte sectors.
You'll have to change to GPT partitioning to use >2TB; for instance:
++++++++++
[root@www ~]# uname -srvmpio
Linux 2.6.32-131.2.1.el6.i686 #1 SMP Wed May 18 07:07:27 EDT 2011 i686 i686 i386 GNU/Linux
[root@www ~]# parted /dev/sdn print
Model: DGC RAID 5 (scsi)
Disk /dev/sdn: 6893GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 1049kB 6893GB 6893GB ext4 lomover
[root@www ~]#
+++++++++++
You will need to align your partitions to the 4KB sector boundaries; parted is doing this automatically these days; not sure about C5, though, as I don't currently have a LUN on a storage group with a hardware (non-VMware) C5 i686 box (using VMware ESX 3.5U5 limits LUNs to 2TB, so can't test there). The above machine is a real RHEL 6.1 box on an i686 processor system (dual Intel Xeon 2.8GHz; generation prior to EM64T's introduction). Works fine, just have to remember to partition GPT.
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