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92 Administering disks
Changing the disk-naming scheme
Alternatively, you can change the naming scheme from the command line. The
following commands select enclosure-based and operating system-based
naming respectively:
# vxddladm set namingscheme=ebn [persistence={yes|no}]
# vxddladm set namingscheme=osn [mode={default|legacy|new}] \
[persistence={yes|no}]
The optional persistence argument allows you to select whether the
DDL-assigned names of disk devices that are displayed by VxVM remain
unchanged after disk hardware has been reconfigured and the system rebooted.
By default, both enclosure-based naming and operating system-based naming
are persistent.
The following examples illustrate the use of
vxddladm set namingscheme
command:
# vxddladm set namingscheme=osn mode=default
# vxdmpadm getlungroup dmpnodename=c1t65d0
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
c1t65d0 ENABLED Disk 2 2 0 Disk
# vxdmpadm getlungroup dmpnodename=disk25
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
disk25 ENABLED Disk 2 2 0 Disk
# vxddladm set namingscheme=osn mode=legacy
# vxdmpadm getlungroup dmpnodename=c1t65d0
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
c1t65d0 ENABLED Disk 2 2 0 Disk
# vxdmpadm getlungroup dmpnodename=disk25
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
c1t65d0 ENABLED Disk 2 2 0 Disk
# vxddladm set namingscheme=osn mode=new
# vxdmpadm getlungroup dmpnodename=c1t65d0
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
disk25 ENABLED Disk 2 2 0 Disk
# vxdmpadm getlungroup dmpnodename=disk25
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
disk25 ENABLED Disk 2 2 0 Disk
# vxddladm set namingscheme=ebn
# vxdmpadm getlungroup dmpnodename=c1t65d0
VxVM vxdmpadm ERROR V-5-1-10910 Invalid da-name