How to mount a NetApp Volume currently being used on another host

[NDO]

Hi All

I have a 11.23 server with the following file system from a NetApp:

/dev/vg05/lvol1    1551695872 1240285583 291947159   81% /xyz

 I need to unmount this file system , and mount this on another server running 11.31.

The unmounting bit is easy, them I might have to lvreduce/lvremove that lvol, them the NetApp admin will unmap this and map it onto another server.

But because this LUN has already data on it and I want to be able to see this data on another server, HOW do I set it up?

regards

FR

[Patrick Wallek]

Do NOT lvreduce or lvremove on the current server.  That WILL wipe out any data that is there.

On the current server do the following:

# vgexport -p -v -s -m /tmp/vg05.map /dev/vg05

# umount /xyz

# vgchange -a n vg05

Now have your Netapp admin present that storage / LUN to your other server.

On the 2nd server:

# ioscan -fnC disk

to see if you see the storage.

# insf -e

to create the disk device files.

Now create the /dev/vg05 (or whatever you want to name it) directory and then use mknod to create the group file.

# mkdir /dev/vg05

# mknod /dev/vg05/group c 64 0x050000

Use whatever minor number is available and appropriate.

Copy the /tmp/vg05.map from you other server to this server.

Now vgimport the vg.

# vgimport -s -v -m /tmp/vg05.map /dev/vg05

# mount /dev/vg05/lvol1 /xyz

Now your data should be available.

Don't forget to update /etc/fstab on this server so it mounts automatically.

[NDO]

What if the luns were previuosly mounted on a solaris system, How can I mount on an HP-UX server 11.31?

[Dennis Handly]

>What if the luns were previously mounted on a solaris system?

What type of filesystem?  I doubt they are compatible?

[NDO]

Hi

Thanks for your reply, I guess is not going to work, because in solaris there were a UFS file system but on HP-UX, they will be vxfs....

So its not going to work right?

FR

[Dennis Handly]

I suppose you could mount it as read only HFS and see?

Consult the tag cloud:

http://h30499.www3.hp.com/t5/tag/ufs/tg-p/category-id/itrc-117

http://h30499.www3.hp.com/t5/General/If-HFS-is-HP-UX-s-version-of-UFS-does-this-mean-the-UFS-fs-type/m-p/5527101/

http://h30499.www3.hp.com/t5/System-Administration/Add-UFS-SCSI-disk-to-a-HP-UX-11i-system/m-p/5608243/

[NDO]

Hi

From one the links you provide, it says that HFS its only being used on a PA-RISC systems, so I am using an itanium rx4640 system, so nothing I ca do right?

[Dave Olker]

How does the NetApp filer see the volume?  Is this presented via Fibre Channel?  iSCSI?  I'm wondering if the NetApp filer could present the volume to the HP-UX via NFS and have the HP-UX box make sense of the data.

Dave

[NDO]

Its presented via fiber

[Dennis Handly]

>it says that HFS its only being used on a PA-RISC systems, so I am using an integrity rx4640 system

I think that was for /stand.  You still may be able to choose when you create them.