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Operating Systems HP-UX Mount FIle systems from node-1 onto node-2 Post 302907508 by prvnrk on Saturday 28th of June 2014 10:16:38 PM
Old 06-28-2014
Mount FIle systems from node-1 onto node-2

Hi,

We have HP UX service guard cluster on OS 11.23. Recently 40+ LUNs presented to both nodes by SAN team but I was asked to mount them on only one node. I created required VGs/LVs, created VxFS and mounted all of them and they are working fine. Now client requested those FS on 2nd node as well.

My queries:

1. Is it possible to mount a VxFS on both nodes at the same time? If yes, what do I need to replicate the VG and LV info from node-1 to node-2?
If no, then we may plan to mount them manually onto 2nd node when 1st node goes down. I guess, for this also, I need to replicate all the VG and LV info from node-1 to node-2?

2. How to configure all the Volumes in cluster mode? There's already one SG package running, can we add these new LVs onto it or should I configure NEW Package to include these volumes? If new package then do I need another IP address to it? what are the tasks would I have to do?

I'm no expert so I would greatly appreciate any help with more details.

Many thanks!!
 

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NG_DEVICE(4)						   BSD Kernel Interfaces Manual 					      NG_DEVICE(4)

NAME
ng_device -- device netgraph node type SYNOPSIS
#include <netgraph/ng_device.h> DESCRIPTION
A device node is both a netgraph node and a system device interface. When a device node is created, a new device entry appears which is accessible via the regular file operators such as open(2), close(2), read(2), write(2), etc. The first node is created as /dev/ngd0, all subsequent nodes /dev/ngd1, /dev/ngd2, etc. HOOKS
A device node has a single hook with an arbitrary name. All data coming in over the hook will be presented to the device for read(2). All data coming in from the device entry by write(2) will be forwarded to the hook. CONTROL MESSAGES
The device node supports one non-generic control message: NGM_DEVICE_GET_DEVNAME Returns device name corresponding to a node. SHUTDOWN
This node shuts down upon receipt of a NGM_SHUTDOWN control message, or upon hook disconnection. The associated device entry is removed and becomes available for use by future device nodes. SEE ALSO
netgraph(4), ngctl(8) HISTORY
The device node type was first implemented in FreeBSD 5.0. AUTHORS
Mark Santcroos <marks@ripe.net> Gleb Smirnoff <glebius@FreeBSD.org> BSD
October 19, 2004 BSD
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