Display status and characteristics of the PV:
#lspv hdisk69
Display PP usage of hdisk69 and allocation by region on the disk:
#lspv -p hdisk69
To list all logical volumes on PV hdisk69:
#lspv -l hdisk69
Close the PV (Used while removing PV without varyon):
#chpv -v r hdisk69
Open the PV:
#chpv -v a hdisk69
Clear the master boot record on PV hdisk69:
#chpv -c hdisk69
Clear the VGDA off the PV hdisk69:
#chpv -C hdisk69
To move PPs from PV hdisk69 to hdisk96:
#migratepv hdisk69 hdisk96
To migrate LV testlv from PV hdisk69 to hdisk96:
#migratepv -l testlv hdisk69 hdisk96
To modify ALLOCATABLE to NO:
#chpv -an hdisk69
To modify ALLOCATABLE to YES:
#chpv -ay hdisk69
To add PVID to disk:
#chdev -l hdisk69 -a pv=yes
To remove PVID of disk:
#chdev -l hdisk69 -a pv=clear
To check PVID of the disk:
#lqueryvg -h /dev/hdisk69
#od -x /dev/hdisk69 | head
To give details of the volume group info for the hard disk:
#lqueryvg -Atp /dev/hdisk69
As a side note, in specific configurations (like SSD multipathing or EMC PowerPath) it is common to see hdiskX devices without PVID and not belonging to any volume group. Pay attention, this doesn't mean they are free to use. It is perfectly normal in these configurations and the "free" disks are actually the paths of the "real" ones.
For example in case of:
- SSD multipathing, the usable disk name is: vpathX
- EMC PowerPath, the disk name is hdiskpowerX
Below you have an example of SSD multipathing configuration as shown in lspv
command:
#lspv hdisk0 00987ss9d9sds923 rootvg hdisk1 none None hdisk2 none None hdisk3 none None hdisk4 none None vpath0 00cb3e924851ar12 lamevg2
In the example above, vpath0 is the real disk and hdisk1, hdisk2, hdisk3 and hdisk4 are the paths:
vpath0 Available Data Path Optimizer Pseudo Device Driver hdisk1 Available 01-01-02 U789D.001.DQD35BK-P1-C2-T2-W5005076801402F1D-L22000000000000 FC 2145 hdisk3 Available 01-01-02 U789D.001.DQD35BK-P1-C2-T2-W5005076801402F2D-L22000000000000 FC 2145 hdisk3 Available 03-00-02 U789D.001.DQD35PG-P1-C6-T1-W5005076801302F2D-L22000000000000 FC 2145 hdisk4 Available 03-00-02 U789D.001.DQD35PG-P1-C6-T1-W5005076801302F1D-L22000000000000 FC 2145