Device Drivers (file system)

keelee

  when we study the solaris disks system,we must understand the three words(Physical device name, Instance name,logical device name)!
   

Physical device name
Represents the full device pathname in the device information hierarchy.

Instance name
Represents the kernel's abbreviation name for every possible device on the system.

Logical device name
Used by system administrators with most file system commands to refer to devices

1）Physical device name：
v880：
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789a1d,0
Ultra450:
/pci@1f,4000/scsi@3/disk@0,0
The command demsg showes the disk devices:
Apr 19 00:28:45 s10one genunix: [ID 936769 kern.info] ssd1 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789a1d,0
Apr 19 00:28:45 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789a1d,0 (ssd1) online
Apr 19 00:28:45 s10one scsi: [ID 799468 kern.info] ssd0 at fp1: name w21000004cf789761,0, bus address e1
Apr 19 00:28:45 s10one genunix: [ID 936769 kern.info] ssd0 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789761,0
Apr 19 00:28:45 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789761,0 (ssd0) online
Apr 19 00:28:46 s10one scsi: [ID 799468 kern.info] ssd3 at fp1: name w2100002037f89ca1,0, bus address e2
Apr 19 00:28:46 s10one genunix: [ID 936769 kern.info] ssd3 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f89ca1,0
Apr 19 00:28:46 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f89ca1,0 (ssd3) online
Apr 19 00:28:46 s10one scsi: [ID 799468 kern.info] ssd5 at fp1: name w2100002037f8a786,0, bus address e0
Apr 19 00:28:46 s10one genunix: [ID 936769 kern.info] ssd5 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f8a786,0
Apr 19 00:28:46 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f8a786,0 (ssd5) online
Apr 19 00:28:46 s10one scsi: [ID 243001 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0 (fcp1):
This same information is also available in the /var/adm/messages file.
Apr 19 00:28:45 s10one genunix: [ID 936769 kern.info] ssd1 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789a1d,0
Apr 19 00:28:45 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789a1d,0 (ssd1) online
Apr 19 00:28:45 s10one genunix: [ID 936769 kern.info] ssd0 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789761,0
Apr 19 00:28:45 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w21000004cf789761,0 (ssd0) online
Apr 19 00:28:46 s10one genunix: [ID 936769 kern.info] ssd3 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f89ca1,0
Apr 19 00:28:46 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f89ca1,0 (ssd3) online
Apr 19 00:28:46 s10one genunix: [ID 936769 kern.info] ssd5 is /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f8a786,0
Apr 19 00:28:46 s10one genunix: [ID 408114 kern.info] /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f8a786,0 (ssd5) online



本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/9710/showart_101338.html