Emergency UNIX and Linux Support

If you use truecopy or similar storage cloning methods ...

You have situation that source VG and destination VG have the same LVM id (that's why vgimport will fail), and the disks are presented on all nodes of SG.
Because of the same LVM id, HPUX will not import, but will warn you there are same ID's on multiple sets of disk.

That's where vgchgid comes into play, allowing you to have 'same/cloned' volume group on any of the SG cluster member.

So you clone the disks via storage method, then vgexport the cloned volume group, change the LVM ID and import.

If you just want to extend the SG clustered volume group with new luns (your case), you just extend on the node where the package is (as you did), export preview of that volume group ( -p -m -s switches, easy to remember , then on secondary node you make vgexport of that group (plain and simple no switches),mknod, vgimport using map file from primary node.

Code:

vgimport -m yourmapfile -N -s /dev/yourvolumegroup

No downtime is required for these operations.

If you are adding additional LVOLS you will need to modify the /etc/cmcluster/package/package.sh script (where package is the name of the package you are modifying).

If those luns were used on any of the cluster nodes before the above action (extending on the primary node), you will need to run pvremove on every node for specifed disk(s) (to remove LVM information).

Hope that clears things out.
Regards
Peasant.

Thanks Peasant.

Code:

vgimport -m yourmapfile -N -s /dev/yourvolumegroup

Am getting below error ..saying that -N option is not available ..

Code:

#  vgimport -p  -m /tmp/vg01.2.map -N -s /dev/VGT
Usage: vgimport
        [-p]
        [-v]
        [-s]
        [-m MapFile]
        VolumeGroupName PhysicalVolumePath...
"N": Illegal option.

Code:

# uname -a
HP-UX pbup1s B.11.11 U 9000/800 112434670 unlimited-user license

# swlist -l product | grep -i lvm
  LVM                   B.11.11        LVM
  PHCO_29379            1.0            LVM commands cumulative patch
  PHKL_26743            1.0            LVM Cumulative Patch

# As I read on various forum, have to perform vgchgid but am not sure can we perform vgchgid on all LUN's with on active VG ..as this is production server and I can't take any risk ..

---------- Post updated at 08:54 AM ---------- Previous update was at 05:39 AM ----------

Have solved the issue .. we can use below command to import map file ..

1# Varify corresponding luns on secondary server .. and pass the data path discovered disk as args to vgimport as below ..
2# ensure pass both primary and alternate disk path without -s option ..

Code:

# vgimport  -v -m  /tmp/vg01.map /dev/vgpsdp1vg01  dev/dsk/c19t1d1 /dev/dsk/c19t1d2 /dev/dsk/c21t1d1 /dev/dsk/c21t1d2 /dev/dsk/c19t1d0 /dev/dsk/c21t1d0

Thanks all for valuable Help !!

Thanks,
Shirish Shukla