Troubleshooting And Monitoring - IBM TotalStorage DS6000 Series Redbooks
Concepts and architecture
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Also See for TotalStorage DS6000 Series:
- Redbook (578 pages) ,
- Attachment manual (298 pages) ,
- Introduction and planning manual (119 pages)
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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:
Host: scsi0 Channel: 00 Id: 08 Lun: 00
Vendor: IBM
Type:
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: IBM
Type:
Host: scsi2 Channel: 00 Id: 00 Lun: 01
Vendor: IBM
Type:
Host: scsi2 Channel: 00 Id: 00 Lun: 02
Vendor: IBM
Type:
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: IBM
Type:
Host: scsi3 Channel: 00 Id: 00 Lun: 01
Vendor: IBM
Type:
Host: scsi3 Channel: 00 Id: 00 Lun: 02
Vendor: IBM
Type:
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 shows the condensed content of
the entry for a QLogic Fibre Channel HBA.
Example: A-17 Sample /proc/scsi/qla2300/x
knox:~ # cat /proc/scsi/qla2300/2
QLogic PCI to Fibre Channel Host Adapter for ISP23xx:
Entry address = c1e00060
HBA: QLA2312 , Serial# H28468
Request Queue = 0x21f8000, Response Queue = 0x21e0000
320
DS6000 Series: Concepts and Architecture
Direct-Access
Model: 32P0032a S320 1 Rev: 1
Processor
Model: 1750511
Direct-Access
Model: 1750511
Direct-Access
Model: 1750511
Direct-Access
Model: 1750511
Direct-Access
Model: 1750511
Direct-Access
Model: 1750511
Direct-Access
Firmware version: 3.01.18, Driver version 6.05.00b9
ANSI SCSI revision: 03
ANSI SCSI revision: 02
Rev: .545
ANSI SCSI revision: 03
Rev: .545
ANSI SCSI revision: 03
Rev: .545
ANSI SCSI revision: 03
Rev: .545
ANSI SCSI revision: 03
Rev: .545
ANSI SCSI revision: 03
Rev: .545
ANSI SCSI revision: 03
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