Description
When Dynamic Multi-Pathing (DMP) is installed on linux, Native device support is enabled by default for non-root devices.
To enable root support in DMP, the following command can be used:
Note: A reboot will be required.
# vxdmpadm settune dmp_native_support=on
As part of enabling root device support, this command will update the grub configuration with a new entry (Title: vxdmp_root) which allows the system to boot off a root device managed by DMP. This entry will be the default boot option.
Example:
# vxdmpadm settune dmp_native_support=on
VxVM vxdmpadm INFO V-5-1-15866 DMP Native Support is enabled/disabled for root LVM volume. Please reboot the system for changes to take effect.
To check if dmp native support is enabled, run the following command.
# vxdmpadm gettune all
Tunable Current Value Default Value
------------------------------ ------------- -------------
dmp_native_support on off
To view the disks under native control:
# vxdmpadm native ls
DMPNODENAME POOL NAME
=============================================
disk_0 -
emc0_02bf symc13
emc0_02c0 symc13
emc0_02c1 -
emc0_02c2 -
emc0_02c3 -
emc0_02c4 -
emc0_02c5 -
emc0_02c6 -