06-21-2012
Linux os clustering
Hi,
I have done the OS clustering in linux redhat 5.6, my one node is down and when i am trying to reboot the other node it is not coming up. any pointer to this would be helpful.
the SAN storage luns are not coming as mounted
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---------- Post updated at 01:07 PM ---------- Previous update was at 12:48 PM ----------
linuxvirtualserver dot org
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LEARN ABOUT OPENSOLARIS
ng_device
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