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
–P property_name
Displays the value of the given property for all entries. Use the –d, -C, -I or –H options or a
device file name to limit the ioscan output to particular entries. In HP-UX 11i v3, the following
properties are defined:
• health
• bus_type
• cdio
• is_block
• is_char
• is_pseudo
• b_major
• c_major
• minor
• class
• driver
• hw_path
• id_bytes
• instance
• module_name
• sw_state
• hw_type
• description
• error_recovery
• is_inst_replaceable (requires patches PHKL_37458 and PHCO_37479 for releases
prior to March 2008)
These fields are defined in ioscan(1M).
The health property is new in HP-UX 11i v3. Note that this property may not be updated until the device
is accessed. The following table lists values for health:
online
Device is online and functional.
offline
Device has gone offline and is inaccessible.
limited
Device is online but performance is degraded due to links, paths, or connections
being offline.
unusable
An error condition occurred that requires manual intervention.
disabled
Device has been disabled or suspended.
standby
Device is functional but not in use.
–m dsf [dsf_name]
Displays the mappings between a persistent DSF and its equivalent legacy DSFs. Either type of DSF
can be specified. If no DSF name is specified, the mappings are displayed for all valid character
DSFs. For example:
# ioscan -m dsf /dev/dsk/c19t0d1
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk43 /dev/dsk/c19t0d1
# ioscan -m dsf /dev/disk/disk43
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk43 /dev/dsk/c9t0d1
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