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Appendix A Restoration Procedure for when a Path Degrades in a VERITAS Volume
Manager Environment
>
ETERNUS DX Disk storage systems Server Connection Guide (Fibre Channel) for Linux
36
Copyright 2010 FUJITSU LIMITED
P3AM-3842-05ENZ0
1-2 Check the status of volume paths connected to each Fibre Channel card using the
controller numbers that were checked in Step 1-1
.
In this step, check the controller number corresponding to the volume for which
"DISABLED" is displayed.
Example (for ETERNUS DX410)
In this example, "DISABLED" is displayed for the "sde" volume.
The controller number of the Fibre Channel card in which the volume cannot be recog-
nized is "c7".
2 Obtain and apply the Change LUN State Utility.
2-1 Obtain the Change LUN State Utility provided by each Fibre Channel card vendor.
- For QLogic Fibre Channel cards
Obtain the Change LUN State Utility from the QLogic web-site
(http://www.qlogic.com/).
- For Emulex Fibre Channel cards
Obtain the Change LUN State Utility from the Emulex web-site
(http://www.emulex.com/).
Refer to each vendor web-site for details about the Change LUN State Utility.
2-2 Apply the Change LUN State Utility that is obtained in Step 2-1 according to the proce-
dure specified by each vendor to change the state of the LUN to recognized.
Refer to each vendor web-site for details about how to apply the Change LUN State
Utility.
3 Enable VERITAS Volume Manager.
Enable VERITAS Volume Manager using the "vxdctl" command.
# vxdmpadm getsubpaths ctlr=c<controller number>
# vxdmpadm getsubpaths ctlr=c6
NAME STATE PATH-TYPE DMPNODENAME ENCLR-TYPE ENCLR-NAME
=========================================================================
sdb ENABLED - sdb FJ_DX400 fj_dx400
sdc ENABLED - sdc FJ_DX400 fj_dx400
sdd ENABLED - sdd FJ_DX400 fj_dx400
# vxdmpadm getsubpaths ctlr=c7
NAME STATE PATH-TYPE DMPNODENAME ENCLR-TYPE ENCLR-NAME
=========================================================================
sde DISABLED - sdb FJ_DX400 fj_dx400
sdf ENABLED - sdc FJ_DX400 fj_dx400
sdg ENABLED - sdd FJ_DX400 fj_dx400
# vxdctl enable