topic Re: File System in Operating System - HP-UX

File System

System Dude_1 — Tue, 28 Aug 2001 14:44:53 GMT

Currently we are running n4000 on EMC disk with HP-UX 11 64 bit and largefiles enable. We are planning to use the BCV functionality to copy the filesystem in n4000 and mount it over at T500. Unfortunately, the t500 is running on HP-UX 10.20. Could I mount the filesystem?

Re: File System

Alan Riggs — Tue, 28 Aug 2001 14:48:41 GMT

Yes.

You will want to make sure that you are running the same version of JFS on each system, but there should be no incompatability issues between a vxfs filesystem under 11.00 and 10.20

Re: File System

System Dude_1 — Tue, 28 Aug 2001 14:52:25 GMT

Could you elaborate on how to check JFS version on both system?

Re: File System

linuxfan — Tue, 28 Aug 2001 15:03:29 GMT

Hi Jamal,

Couple of things, make sure you are uptodate with patches on both the nodes. Also to check the version you could use
fstyp -v /dev/vg00/lvol??

If you just want to look at version
fstyp -v /dev/vg00/lvol?? |grep version

-HTH
Ramesh

Re: File System

System Dude_1 — Tue, 28 Aug 2001 15:10:22 GMT

The JFS version 3 for both server but i'm having error as below when try to do fsck :

invalid super-block
search for auxiliary super-block? (ynq)y
alternate super-block not found

Re: File System

Deshpande Prashant — Tue, 28 Aug 2001 15:23:14 GMT

HI
I guess you are using EMC Time Finder software to split the bcvs and mount on second machine.
Did you do vgchgid on all disks (bcv) on second machine before importing them.
Here are steps on second machine after split.
#vgchgid /dev/rdsk/cxtyd0 ....
(Do vgchgid on all disks on same vg at one-shot)
#mkdir /dev/vg01
#mknod /dev/vg01/group c 64 0x140000
#vgimport /dev/vg01 /dev/dsk/cxtyd0 ..
#vgchange -a y /dev/vg01
#fsck /dev/vg01/lvol1
#mount /dev/vg01/lvol1 /u01

Thanks.
Prashant Deshpande.

Re: File System

System Dude_1 — Tue, 28 Aug 2001 15:28:20 GMT

But I did not export the filesystem in the BCV disk when I run the timefinder, why should i import it?

Re: File System

MANOJ SRIVASTAVA — Tue, 28 Aug 2001 15:41:35 GMT

Hi Jamaludin Bin Muhamad Yu

Try this link too

http://163.18.14.55/datapro/16082-1.htm#TAG14

Manoj Srivastava

Re: File System

Deshpande Prashant — Tue, 28 Aug 2001 15:59:59 GMT

Hi
As far as I know, volume groups need to be exported before syncing. This how I do it in my machine.
# unmount file systems and export vgs (bcv)
# sync bcvs
# After sync is complete break
# Vgchgid on bcv disks on node2
# import disk
# fsck
# mount file system.

Take a look at man vgchgid for more details.

Thaks.
Prashant Deshpande.