File System

[System Dude_1]

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?

[Alan Riggs]

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

[System Dude_1]

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

[linuxfan]

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

[System Dude_1]

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

[Deshpande Prashant]

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.

[System Dude_1]

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

[MANOJ SRIVASTAVA]

Hi Jamaludin Bin Muhamad Yu

Try this link too

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

Manoj Srivastava

[Deshpande Prashant]

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.