Business Copy and HP-UX mounting

[Didier Honore]

Hello,

what is the right method to mounted a Business Copy lun on HP-UX?

I have created the Business Copy lun.
Then I have copy the parent lun to the Business Copy lun.
I have defined the permission on the Business Copy lun.

Now how can I mount it?

Each time I try I get an error: file system corrupted. I must do a fsck before to mount it.

What is the right way?

thanks

Didier

[Ian Dennison_1]

Unless you unmount the source disks before doing the Business Copy split, you will need to perform an fsck on the disks. As long as the database on the disks is down, there should not be a problem.

BTW, are you using the same Volume Group ID on both systems?

Share and Enjoy! Ian

[Ross Zubritski]

Are you able to mount after the fsck? I use BCV's here (EMC) and have built fsck login into my sync/split/mount scripts.

Regards,

RZ

[Ross Zubritski]

"fsck login"=fsck logic

Fat fingers....

[Bryan D. Quinn]

Hey Didier,

Here is what we do to make a "snapshot" of our PRD server to mount on another server as TestPRD.

1. vgchgid pv's
2. mkdir
3. mknod
4. vgimport pv's
5. vgchange -c n vg
6. vgchange -a y -q n vg
7. mount lvols to corresponding mount points

Hope this helps!
-Bryan

[Didier Honore]

Hi,


It works after the fsck.

If I have a correct understanding, if I don't umount the parent LUN, I must do a fsck on the BC LUN.

Is it right?

thanks

Didier

[Ross Zubritski]

Correct

[Stuart Abramson_2]

1. You must quiesce the primary LUN before you split the disks. Otherwise the copy will be corrupt.

1'. you must ensure that the copy is fully synchronized with the primary before you split it. I forget how to do that with BC (pairdisplay -someoption)

2. You must vgchgid the copy before you mount it on the same host or on a host in a cluster with the primary PV. Otherwise you will hve two PVs with the same VGID.

3. You must fsck the copy before you mount it.