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364 DS8000 Series: Concepts and Architecture
2787 2 Gigabit Fibre Channel Disk Controller PCI-X
For more information on OS/400 support for DS8000, please see Appendix B, “Using DS8000
with iSeries” on page 373.
More information on running Linux in an iSeries partition can be found in the iSeries
Information Center at:
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm
For running Linux in an i5 partition check, the i5 Information Center at:
http://publib.boulder.ibm.com/infocenter/iseries/v1r2s/en_US/info/iphbi/iphbi.pdf
Troubleshooting and monitoring
The /proc pseudo file system
The /proc pseudo file system is maintained by the Linux kernel and provides dynamic
information about the system. The directory /proc/scsi contains information about the
installed and attached SCSI devices.
The file /proc/scsi/scsi contains a list of all attached SCSI devices, including disk, tapes,
processors, and so on. Example A-16 shows a sample /proc/scsi/scsi file.
Example: A-16 Sample /proc/scsi/scsi file
knox:~ # cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM-ESXS Model: DTN036C1UCDY10F Rev: S25J
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 08 Lun: 00
Vendor: IBM Model: 32P0032a S320 1 Rev: 1
Type: Processor ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi2 Channel: 00 Id: 00 Lun: 01
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi2 Channel: 00 Id: 00 Lun: 02
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 01
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 02
Vendor: IBM Model: 2107921 Rev: .545
Type: Direct-Access ANSI SCSI revision: 03
There also is an entry in /proc for each HBA, with driver and firmware levels, error counters,
and information about the attached devices. Example A-17 on page 365 shows the
condensed content of the entry for a QLogic Fibre Channel HBA.