Overview: The Next Generation Mass Storage Stack (September 2009)
Table Of Contents
- Abstract
- Background
- Features of the Next Generation Mass Storage Stack
- Impact
- Background
- Impact
- Background
- Impact
- Background
- Impact
- Impact
- Introduction to the Agile View
- Changes to I/O and Mass Storage Subsystems
- Changes to Other Subsystems
- Migrating to the Agile View
- Conclusion
- Glossary
- Appendix A: Summary of Changes
- Appendix B: Using ioscan
- Appendix C: Using scsimgr
- Appendix D: Interpreting Lunpath Hardware Paths
- For more information
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To show the mapping of a persistent DSF to its equivalent legacy paths, and vice versa, use ioscan with the –m
dsf option. For example:
# ioscan -m dsf /dev/disk/disk43
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk43 /dev/dsk/c9t0d1
/dev/dsk/c11t0d1
/dev/dsk/c7t0d1
/dev/dsk/c5t0d1
/dev/dsk/c13t0d1
/dev/dsk/c17t0d1
/dev/dsk/c15t0d1
/dev/dsk/c19t0d1
# ioscan -m dsf /dev/dsk/c19t0d1
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk43 /dev/dsk/c19t0d1
To show the mapping of a LUN hardware path to its equivalent lunpath and legacy hardware paths, and vice
versa, use ioscan with the –m hwpath option. For example:
# ioscan -m hwpath -H 64000/0xfa00/0x1
Lun H/W Path Lunpath H/W Path Legacy H/W Path
====================================================================
64000/0xfa00/0x1
0/4/1/1.0x50001fe15008a738.0x4001000000000000 0/4/1/1.124.2.0.0.0.1
0/4/1/1.0x50001fe15008a739.0x4001000000000000 0/4/1/1.124.3.0.0.0.1
0/4/1/1.0x50001fe15008a73d.0x4001000000000000 0/4/1/1.124.5.0.0.0.1
0/4/1/1.0x50001fe15008a73c.0x4001000000000000 0/4/1/1.124.4.0.0.0.1
0/4/1/0.0x50001fe15008a73c.0x4001000000000000 0/4/1/0.124.4.0.0.0.1
0/4/1/0.0x50001fe15008a73d.0x4001000000000000 0/4/1/0.124.5.0.0.0.1
# ioscan -m hwpath -H 0/4/1/1.124.2.0.0.0.1
Lun H/W Path Lunpath H/W Path Legacy H/W Path
====================================================================
64000/0xfa00/0x1
0/4/1/1.0x50001fe15008a738.0x4001000000000000 0/4/1/1.124.2.0.0.0.1
# ioscan -m hwpath -H 0/4/1/1.0x50001fe15008a738.0x4001000000000000
Lun H/W Path Lunpath H/W Path Legacy H/W Path
====================================================================
64000/0xfa00/0x1
0/4/1/1.0x50001fe15008a738.0x4001000000000000 0/4/1/1.124.2.0.0.0.1
To show the health property of all disks, use ioscan with the –P option. For example:
# ioscan –P health –C disk
Class I H/W Path health
=====================================
disk 43 64000/0xfa00/0x1 online
disk 44 64000/0xfa00/0x2 online
disk 45 64000/0xfa00/0x3 online
disk 46 64000/0xfa00/0x4 online
disk 47 64000/0xfa00/0x5 online
disk 48 64000/0xfa00/0x6 online
disk 49 64000/0xfa00/0x7 online
disk 50 64000/0xfa00/0x8 online