Hub/Switch Installation Guide

Chapter 2 HPSS Planning

HPSS Installation Guide September 2002 75

Release 4.5, Revision 2

2.6.10.2.2 Solaris

For Solaris, the method used to enable variable block sizes for a tape device is dependent on the

typeofdriver used.SupporteddevicesincludeSolarisSCSI TapeDriver andIBMSCSITapeDriver.

For the IBM SCSI Tape Driver, set the block_size parameter in the /opt/IBMtape/IBMtape.conf

conﬁguration ﬁleto 0 and performa rebootwith the reconﬁgurationoption. The SolarisSCSI Tape

Driver has a built-in conﬁguration table for all HPSS supported tape drives. This conﬁguration

provides variable block size for most HPSS supported drives. In order to override the built-in

conﬁguration, device information can be supplied in the /dev/kernel/st.conf as global properties

that apply to each node.

Consult the tape device driver documentation for instructions on installation and conﬁguration.

2.6.10.2.3 IRIX

Variable blocksizescan beenabledfor theIRIXnativetape devicedriverbyconﬁguring theMover

to use the tape device special ﬁle with a “v” in the name (e.g. /dev/rmt/tps5d5nsvc).

2.6.10.2.4 Linux

HPSS supports tape devices on Linux with the use of the native SCSI tape device driver (st). To

enable the loading of the Linux native tape device, uncomment the following lines in the ".conﬁg"

ﬁle and follow the procedure for rebuilding your Linux kernel.

CONFIG_SCSI=y

CONFIG_CHR_DEV_ST=y

In Linux, tape device ﬁles are dynamically mapped to SCSI IDs/LUNs on your SCSI bus. The

mapping allocates devices consecutively for each LUN of each device on each SCSI bus found at

the time of the SCSI scan, beginning at the lower LUNs/IDs/buses. The tape device ﬁle will be in

this format: /dev/st[0-31]. This will be the device name to use when conﬁguring your HPSS

device.

2.6.10.3 Disk Devices

All locally attached magnetic disk devices (e.g., SCSI, SSA) should be conﬁgured using the

pathname of the raw device (i.e., character special ﬁle).

For Linux systems, this may involve special consideration.

HPSSsupportsdiskdevice onLinux with theuseofthe nativeSCSI disk device driver(sd)and the

raw device driver (raw).

The Linux SCSI Disk Driver presents disk devices to the user as device ﬁles with the following

naming convention: /dev/sd[a-h][0-8]. The ﬁrst variable is a letter denoting the physical

drive,and thesecond isanumberdenotingthepartitionon thatphysical drive.Often, thepartition

number, will be left off when the devicecorrespondsto the whole drive. Drives can be partitioned

using the Linux fdisk utility.