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Service Port Command Reference
mapCompressDatabase
Occasionally, it may be necessary to eliminate inactive entries and reorder the active entries in the
Persistent Device Map database. The
mapCompressDatabase
command removes entries for devices that
are no longer present and reassigns existing device entries to new addresses. The devices will be assigned
new addresses immediately and hosts must rescan for devices or be rebooted.
This may be required when a host system has a limited number of logical units that may be supported, and
changing devices on the SNC 4000 has caused the logical unit numbers to increase beyond the host’s
supported level.
When you run this command you will be given the option of also clearing the SFM access settings. Because
devices will be assigned new addresses, clearing the SFM database ensures that hosts will not have access
to the wrong LUNs. Accepting this option requires that the system administrator must reassign SFM access
permissions between the hosts and LUNs.
SNC4000 > mapCompressDatabase
CAUTION: This command will compress the Persistent Device Map.
Existing SFM Access Settings may become invalid and should be cleared
because LUN assignments may change!
Do you want to compress the Device Map? (y or n) y
0xc1689ac0 (tShell): Wrote 23 device maps to file 'nvfs:config/device.map'
Device Map Compressed
- Do you want to clear SFM Access Settings? (y or n) y
SFM Access Cleared
value = 23 = 0x17
If you have not been using SFM, the output of this command will not reference SFM.
SNC4000 > mapCompressDatabase
This command will compress the Persistent Device Map.
Do you want to compress the Device Map? (y or n) y
0xc1689ac0 (tShell): Wrote 23 device maps to file 'nvfs:config/device.map'
Device Map Compressed
value = 23 = 0x17
mapHelp
The
mapHelp
command displays a list of the persistent address map database commands.
SNC4000 > mapHelp
mapCompressDatabase - Compress Device Map Database
(reboot required)
mapRebuildDatabase - Rebuild Device Map Database (reboot required)
mapShowDatabase - Show the Map Database
mapShowDevs - Show currently attached devices
mapWinnowDatabase - Remove unattached devices from database
See User’s Guide for more information
value = 0 = 0x0
SNC >
CAUTION
Compressing the map database will cause device addresses to
change unpredictably. Use this command only when no host systems
are expecting devices to remain at their current addresses.
Summary of Contents for SNC 4000
Page 1: ...www adic com ADICSNC 4000User sGuide ADVANCED DIGITAL INFORMATION CORPORATION...
Page 10: ...4 SNC 4000 Introduction...
Page 40: ...34 Removal and Replacement Procedures...
Page 140: ...134 Service Port Command Reference...
Page 147: ...SNC 4000 User s Guide 141 fcConnPortModeGet...
Page 148: ...142 Diagnostic Command Reference...