How to mount a F.S. from a LUN that was moved from one site to DR site

[NDO]

Hi

I have a system running HP-UX 11.31 that has all of its file systems mounted on a NetApp storage. But the NetApp admin wants to move one LUN/File System/Volume group from current NetApp storage to DR site where there is another NetApp. But the new presented LUN it will not have associated to it the "/dev/vgxx/lvolxx" in which I have to mount, but only something like /dev/rdsk/cxtydz.

So how do I mount this F.S.

[Bill Hassell]

You must create a volume group and then use vgimport to import the LUN.
This assumes that the original volume group consists of just one LUN. 

[Torsten.]

Yes, you vgexport the LUN from storage1 and vgimport it from storage2.

You may also consider to LVM mirror the VG from storage1 to storage2, then un-mirror from storage1.

No downtime is needed for that.

[NDO]

Hi Bill!

You said that I must create a VG, but the syntax for creating a VG has:

# vgcreate /dev/<vgname> /dev/dsk/c#t#d# ...

so can I use the copied LUN presented from the NetApp admin which is:

disk     68  0/0/0/5/0/0/1.9.4.0.0.11.0   sdisk   CLAIMED     DEVICE       NETAPP  LUN
                      /dev/dsk/c7t11d0   /dev/rdsk/c7t11d0

so can I use vgcreate /dev/vg09 /dev/dsk/c7t11d0  ?? After mknod.... mkdir -p /dev/vg09.... 

[Torsten.]

Assuming you run 11.31 just do a vgimport, see man page for details.

[NDO]

a vgimport would imply that you have to use vgexport , vgchange, them  umount. That is not what we want to do, because that will wipeout current vg that we are exporting. The purpose of this exercise, is only to veryfy that a snap mirror from the NetApp admin of one of the VG will work in case of disaster.

[Torsten.]

you wrote:

>> But the NetApp admin wants to move one LUN/File System/Volume group from current NetApp storage to DR site where there is another NetApp. 

My understanding of "move" is "move", not "copy" or "clone" ...

OK; vgexport the VG in PREVIEW mode using a map file, then vgimport it, don't forget "vgchgid".