Developer Forum

ello

I have a problem with setting up
raid array 0 on Linux slackware kernel 2.6.11.
I'm doing it for the first time so
i ask for patiance.

Should an array created in scsi controler bios
(scsi select) be seen by a linux driver aic7902
as one device for example /dev/sda (double capacity
of one disc) ?

My hardware is: mainboard intel se7501hg2 with the
two channel scsi adaptec aic7902 controller. On
channel A 3 hard discs . From disc (id 0 and id 2)
i create array 0 (in scsi select). 3 disc i leave
for the system.

Whether i build the driver aic790xx into kernel
or load it as a module the result is the same:
(under) the driver detects 3 discs (sda,sdb,sdc).

Jun 14 08:03:48 gerda kernel: ACPI: PCI interrupt 0000:03:04.0[A] -> GSI 30
(level, low) -> IRQ 30
Jun 14 08:03:48 gerda kernel: ACPI: PCI interrupt 0000:03:04.1[B] -> GSI 31
(level, low) -> IRQ 31
Jun 14 08:03:48 gerda kernel: scsi0 : Adaptec AIC79XX PCI-X SCSI HBA
DRIVER, Rev
1.3.11
Jun 14 08:04:06 gerda kernel: Vendor: FUJITSU Model: MAU3036NC
Rev: 0102
Jun 14 08:04:06 gerda kernel: Type: Direct-Access
ANSI
SCSI revision: 03
Jun 14 08:04:07 gerda kernel: SCSI device sda: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sda: drive cache: write back
Jun 14 08:04:07 gerda kernel: Vendor: FUJITSU Model: MAU3036NC
Rev: 0102
Jun 14 08:04:07 gerda kernel: Type: Direct-Access
ANSI
SCSI revision: 03
Jun 14 08:04:07 gerda kernel: SCSI device sda: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sda: drive cache: write back
Jun 14 08:04:07 gerda kernel: sda: unknown partition table
Jun 14 08:04:07 gerda kernel: Attached scsi disk sda at scsi0, channel
0, id 0,
lun 0
Jun 14 08:04:07 gerda kernel: SCSI device sdb: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sdb: drive cache: write back
Jun 14 08:04:07 gerda udev[3106]: creating device node '/dev/sda'
Jun 14 08:04:07 gerda kernel: SCSI device sdb: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sdb: drive cache: write back
Jun 14 08:04:07 gerda kernel: sdb: unknown partition table
Jun 14 08:04:07 gerda kernel: Attached scsi disk sdb at scsi0, channel
0, id 2,
lun 0
Jun 14 08:04:07 gerda kernel: Vendor: FUJITSU Model: MAU3036NC
Rev: 0102
Jun 14 08:04:07 gerda kernel: Type: Direct-Access
ANSI
SCSI revision: 03
Jun 14 08:04:07 gerda kernel: SCSI device sdc: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sdc: drive cache: write back
Jun 14 08:04:07 gerda kernel: SCSI device sdc: 71819496 512-byte hdwr
sectors
(36772 MB)
Jun 14 08:04:07 gerda kernel: SCSI device sdc: drive cache: write back
Jun 14 08:04:07 gerda kernel: sdc: sdc1
Jun 14 08:04:07 gerda kernel: Attached scsi disk sdc at scsi0, channel
0, id 3,
lun 0
Jun 14 08:04:07 gerda udev[3155]: creating device node '/dev/sdb'
Jun 14 08:04:07 gerda udev[3163]: creating device node '/dev/sdc'
Jun 14 08:04:07 gerda udev[3165]: creating device node '/dev/sdc1'
Jun 14 08:04:07 gerda kernel: Vendor: ESG-SHV Model: SCA HSBP M15
Rev: 0.11
Jun 14 08:04:07 gerda kernel: Type: Processor
ANSI
SCSI revision: 02
Jun 14 08:04:09 gerda kernel: scsi1 : Adaptec AIC79XX PCI-X SCSI HBA
DRIVER, Rev
1.3.11


I have a quastion:
if these two disc (t

The aic79xx driver is for non-RAID operation. AFAICT, you need
Adaptec's a320raid driver to use their HostRAID features. (You can
dowload it from their support pages.)

Note that there will be very little difference between using the
a320raid driver vs. using the kernel's aic79xx driver with Linux
software RAID.