BladeSystem Forums have moved here
To make BladeSystem information easier to find, we have moved the BladeSystem forums here, to Servers and Operating Systems.
Showing results for 
Search instead for 
Do you mean 

VxVM 5.0.1 and Mirror UX

Go to Solution
Frequent Advisor

VxVM 5.0.1 and Mirror UX



So i recently did a fresh install of 11.31 on one of our servers, it is noted that the default it is to use VxVM 5.0.1 and i just toniced some changes on the device files used in LVM.


Before we would use device files like: /dev/dsk/c2t0d0 to create PVs and so on. However, when i was inspecting the already created VG00 i noticed that it showed:

--- Physical volumes ---
PV Name /dev/disk/disk3


So my question is, in order to mirror my boot disk, do i just need to follow the same old documentation and just change the device file used from /dev/dsk/cXtXdX to /dev/disk/diskX...? Or are there other considerations i need to take before doing this?


Anyone care to share some ideas or documentation on this matter?



Honored Contributor

Re: VxVM 5.0.1 and Mirror UX

The /dev/disk/disk# vs /dev/dsk/c?t?d? device files are due to the I/O stack on HP-UX 11.31.  


There are multiple white-papers on the new I/O stack available here:



As far as mirroring goes -- Yes, you can substitute the new /dev/disk/disk# device file for the old /dev/dsk/c?t?d? device files.  Other than that, you mirroring procedures are exactly the same.

Trusted Contributor

Re: VxVM 5.0.1 and Mirror UX

You can have vxvm use the agile device files by doing

vxddladm set naming_scheme=osn mode=new

You say you use VxVM 5.01 but you mention lvm.. If your system is using a VXVM boot disk you should mirror using vxvm vxrootmir command in /opt/VRTS/bin

Emil Velez
Certified HP Instructor, ATP and ASE Server Solutions
ATP Storage

Master ASE Superdome Solutins

HPE Education Services

Ask me about training on HP-UX, Proliant, ServiceGuard, StoreAll, StoreOnce, StoreServ, StoreEasy and High Availability