How did you delete the diskgroup ? (HP LVM uses volume groups, Veritas
Volume Manager uses diskgroups)

The correct way to do it is: vxdg -g destroy.

Once that has been done, you can "unsetup" the disk with the command :
/etc/vx/bin/vxdiskunsetup



Now, the loopback that you see in the vxdisklist, is the name of the
host (the machine) that has the diskgroup imported (the diskgroup name
is actually "vtvol") the "id" of the disk and the diskgroup will always
end in the name of the host on which it was created.


Hope that helps


jeff wrote:
> Platform: HPUX 11.23, veritas 3.5
> When I try to delete volume group, it became loopback group. The dynamic
> disk group and physical disk can not be removed from vea GUI. SAM shows the
> disk is still in vxvm. Any workaround for it? Thanks in advance
>
> vxdisk list c4t0d2
> Device: c4t0d2
> devicetag: c4t0d2
> type: simple
> hostid: loopback
> disk: name= id=1117559854.1171.loopback
> group: name=vtvol id=1117559855.1176.loopback
> flags: online ready private autoconfig autoimport
> pubpaths: block=/dev/vx/dmp/c4t0d2 char=/dev/vx/rdmp/c4t0d2
> version: 2.2
> iosize: min=1024 (bytes) max=256 (blocks)
> public: slice=0 offset=1280 len=7208208
> private: slice=0 offset=128 len=1024
> update: time=1117638192 seqno=0.9
> headers: 0 248
> configs: count=1 len=727
> logs: count=1 len=110
> Defined regions:
> config priv 000017-000247[000231]: copy=01 offset=000000 enabled
> config priv 000249-000744[000496]: copy=01 offset=000231 enabled
> log priv 000745-000854[000110]: copy=01 offset=000000 enabled
> lockrgn priv 000855-000919[000065]: part=00 offset=000000
> Multipathing information:
> numpaths: 1
> c4t0d2 state=enabled