IBM TS2340 User Guide - Page 118
Configuring Tape and Medium Changer Devices on IBM System p Models, Configuring Tape and Medium
UPC - 883436006873
View all IBM TS2340 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 118 highlights
Linux Device Driver (lin_tape) Configuring Tape and Medium Changer Devices on IBM System p Models Follow the same instructions as documented in the previous section. You need to configure the Emulex Linux device driver if you have fibre channel tape devices attached to your System p (also known as pSeries) system. For instructions on how to configure the Emulex device driver, refer to the lin_tape_359X_pSeries.ReadMe at ftp://ftp.software.ibm.com/storage/devdrvr/Linux. Configuring Tape and Medium Changer Devices on IBM System z Models The fibre channel topology supported for System z is point-to-point and fabric. Please refer to the Linux on System z fibre channel documents for more details on the supported configurations for fibre channel device attachment. The Linux fibre channel adapter device driver zfcp is available in the kernel that supports zSeries Fibre Channel Protocol. The zfcp device configuration methods in 2.6 and 2.4 kernels are different. For 2.6 kernels, refer to appropriate chapter in the Linux on System z document entitled ″Linux on System z: Device Drivers, Features, and Commands″. For 2.4 kernels, there are three ways to load the zfcp device driver in order to see the attached tape devices. 1. Create a /etc/zfcp.conf file and make a ramdisk to statically attach tape devices into your system. You can use this method only if you have a persistent mapping in a SAN environment. Every time you reboot the system, the zfcp is automatically loaded and the tape devices can be seen from the system. First you need to add the device map into this file. The following is an example of zfcp.conf: 0xf1c0 0x1:0x5005076300402733 0x0:0x0000000000000000;\ 0xf1c1 0x1:0x5005076300402733 0x0:0x0001000000000000 The zfcp device driver uses the ″map″ module parameter to recognize a physically attached tape device. ″map″ takes the following format: map="::;...." Where: devno The device number of the host bus adapter (16 bits, see /proc/subchannels). It is ″0xf1c0″ or ″0xf1c1″ in the previous example. port scsi-id Linux internal SCSI ID assigned to the Fibre Channel port of the SCSI target device (32-bit, must not be 0, must be a unique one-to-one mapping for each World Wide Port Name. It is ″0x1″ in the previous example. wwpn World Wide Port Name identifying the Fibre Channel port of the SCSI target device (64-bit). It is ″0x5005076300402733″ in the previous example. unit scsi-lun Linux internal SCSI Logical Unit Number (32-bit). It is ″0x0″ in the previous example. fcp-lun Logical Unit Number associated with the SCSI target device (64-bit). In 100 IBM Tape Device Drivers Installation and User's Guide