| This driver is for Compaq's SMART2 Intelligent Disk Array Controllers. |
| |
| Supported Cards: |
| ---------------- |
| |
| This driver is known to work with the following cards: |
| |
| * SMART (EISA) |
| * SMART-2/E (EISA) |
| * SMART-2/P |
| * SMART-2DH |
| * SMART-2SL |
| * SMART-221 |
| * SMART-3100ES |
| * SMART-3200 |
| * Integrated Smart Array Controller |
| * SA 4200 |
| * SA 4250ES |
| * SA 431 |
| * RAID LC2 Controller |
| |
| It should also work with some really old Disk array adapters, but I am |
| unable to test against these cards: |
| |
| * IDA |
| * IDA-2 |
| * IAES |
| |
| Installing: |
| ----------- |
| |
| You need to build a new kernel to use this device, even if you want to |
| use a loadable module. |
| |
| Apply the patch to a 2.2.x kernel: |
| |
| # cd linux |
| # patch -p1 <smart2.patch |
| |
| Then build a new kernel and turn on Compaq SMART2 Disk Array support. |
| Create device nodes for the diskarray device: |
| |
| # mkdev.ida [ctlrs] |
| |
| Where ctlrs is the number of controllers you have (defaults to 1 if not |
| specified). |
| |
| EISA Controllers: |
| ----------------- |
| |
| If you want to use an EISA controller you'll have to supply some |
| insmod/lilo paramaters. If the driver is compiled into the kernel, must |
| give it the controller's IO port address at boot time (it is no longer |
| necessary to specifiy the IRQ). For example, if you had two SMART-2/E |
| controllers, in EISA slots 1 and 2 you'd give it a boot argument like |
| this: |
| |
| smart2=0x1000,0x2000 |
| |
| If you were loading the driver as a module, you'd give load it like this: |
| |
| insmod cpqarray.o eisa=0x1000,0x2000 |
| |
| You can use EISA and PCI adapters at the same time. |
| |
| Booting: |
| -------- |
| |
| You'll need to use a modified lilo if you want to boot from a disk array. |
| Its simply a version of lilo with some code added to tell it how to |
| understand Compaq diskarray devices. |
| |
| Device Naming: |
| -------------- |
| |
| You need some entries in /dev for the ida device. The mkdev.ida script |
| can make device nodes for you automatically. Currently the device setup |
| is as follows: |
| |
| Major numbers: |
| 72 ida0 |
| 73 ida1 |
| 74 ida2 |
| etc... |
| |
| Minor numbers: |
| b7 b6 b5 b4 b3 b2 b1 b0 |
| |----+----| |----+----| |
| | | |
| | +-------- Partition ID (0=wholedev, 1-15 partition) |
| | |
| +-------------------- Logical Volume number |
| |
| The suggested device naming scheme is: |
| /dev/ida/c0d0 Controller 0, disk 0, whole device |
| /dev/ida/c0d0p1 Controller 0, disk 0, partition 1 |
| /dev/ida/c0d0p2 Controller 0, disk 0, partition 2 |
| /dev/ida/c0d0p3 Controller 0, disk 0, partition 3 |
| |
| /dev/ida/c1d1 Controller 1, disk 1, whole device |
| /dev/ida/c1d1p1 Controller 1, disk 1, partition 1 |
| /dev/ida/c1d1p2 Controller 1, disk 1, partition 2 |
| /dev/ida/c1d1p3 Controller 1, disk 1, partition 3 |