1This driver is for Compaq's SMART2 Intelligent Disk Array Controllers. 2 3Supported Cards: 4---------------- 5 6This driver is known to work with the following cards: 7 8 * SMART (EISA) 9 * SMART-2/E (EISA) 10 * SMART-2/P 11 * SMART-2DH 12 * SMART-2SL 13 * SMART-221 14 * SMART-3100ES 15 * SMART-3200 16 * Integrated Smart Array Controller 17 * SA 4200 18 * SA 4250ES 19 * SA 431 20 * RAID LC2 Controller 21 22It should also work with some really old Disk array adapters, but I am 23unable to test against these cards: 24 25 * IDA 26 * IDA-2 27 * IAES 28 29Installing: 30----------- 31 32You need to build a new kernel to use this device, even if you want to 33use a loadable module. 34 35Apply the patch to a 2.2.x kernel: 36 37# cd linux 38# patch -p1 <smart2.patch 39 40Then build a new kernel and turn on Compaq SMART2 Disk Array support. 41Create device nodes for the diskarray device: 42 43# mkdev.ida [ctlrs] 44 45Where ctlrs is the number of controllers you have (defaults to 1 if not 46specified). 47 48EISA Controllers: 49----------------- 50 51If you want to use an EISA controller you'll have to supply some 52insmod/lilo parameters. If the driver is compiled into the kernel, must 53give it the controller's IO port address at boot time (it is no longer 54necessary to specify the IRQ). For example, if you had two SMART-2/E 55controllers, in EISA slots 1 and 2 you'd give it a boot argument like 56this: 57 58 smart2=0x1000,0x2000 59 60If you were loading the driver as a module, you'd give load it like this: 61 62 insmod cpqarray.o eisa=0x1000,0x2000 63 64You can use EISA and PCI adapters at the same time. 65 66Booting: 67-------- 68 69You'll need to use a modified lilo if you want to boot from a disk array. 70Its simply a version of lilo with some code added to tell it how to 71understand Compaq diskarray devices. 72 73Device Naming: 74-------------- 75 76You need some entries in /dev for the ida device. The mkdev.ida script 77can make device nodes for you automatically. Currently the device setup 78is as follows: 79 80Major numbers: 81 72 ida0 82 73 ida1 83 74 ida2 84 etc... 85 86Minor numbers: 87 b7 b6 b5 b4 b3 b2 b1 b0 88 |----+----| |----+----| 89 | | 90 | +-------- Partition ID (0=wholedev, 1-15 partition) 91 | 92 +-------------------- Logical Volume number 93 94The suggested device naming scheme is: 95/dev/ida/c0d0 Controller 0, disk 0, whole device 96/dev/ida/c0d0p1 Controller 0, disk 0, partition 1 97/dev/ida/c0d0p2 Controller 0, disk 0, partition 2 98/dev/ida/c0d0p3 Controller 0, disk 0, partition 3 99 100/dev/ida/c1d1 Controller 1, disk 1, whole device 101/dev/ida/c1d1p1 Controller 1, disk 1, partition 1 102/dev/ida/c1d1p2 Controller 1, disk 1, partition 2 103/dev/ida/c1d1p3 Controller 1, disk 1, partition 3 104