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Last modified Thu Feb 18 20:54:01 CET 2010
On Coraid devices, access is possible via the usual PC keyboard, mouse and video, or the serial port, or cec(8). Typically, invoking
cec /net/ether0
or
cec '#l1/ether1'
will produce a menu of Coraid devices by MAC address, and you choose one.
You may have to (once only) first type this on your Coraid console:
cecon /net/ether0 cecon /net/ether1 cecon /net/ether2
Once connected to the console, you can partition the available disks into Logical Units (LUNs). We'll assume a shelf number of 1 in these examples. If yours is different, use it in place of `1'.
First declare some drives to be used as hot spares:
spare 1.13-14
To create a big RAID 5 LUN, you would type something like this:
make 0 raid5 1.0-1.10 online 0
which will create LUN 1.0 from drives 0 through 10 of shelf 1. This may take hours to finish, but you can use the LUN immediately.
For single-drive LUNs, you would type something like this:
make 1 raidl 1.11 online 1
which creates an un-RAIDed LUN of drive 11 of shelf 1.
The stock kernels all include devaoe and sdaoe, so you shouldn't need to build a new kernel.
Adding these lines to your plan9.ini or /cfg/pxe file should cause AoE to be enabled automagically at boot time, per sdaoe(3):
aoeif=ether0 aoedev=e!#æ/aoe/1.0
This assumes that your Plan 9 system has a single Ethernet interface. If you have several, choose the one that your AoE device is on. `1' is the shelf number of the AoE device. `1.0' is the logical unit you're interested in. `æ' is Unicode 00e6. `e' is the controller letter you'd like to use for logical unit 1.0.
After your next boot, you should see a lightly populated /dev/sde0. Running `diskparts' should make any partitions visible.
An AoE LUN appears to be a single large disk, often too large for the usual Microsoft partition table to address because it would require sector numbers greater than 2^32, so we skip the Microsoft partition table (the one maintained with disk/fdisk) and just lay down a Plan 9 partition table with
disk/prep /dev/sde0/data
