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Full Discussion: Using AIX HACMP and NFS together
Operating Systems AIX Using AIX HACMP and NFS together Post 302136393 by kapilraj on Monday 17th of September 2007 02:49:48 PM
Old 09-17-2007
My answers right after your questions.

1) Server A and B both are assigned same VG from SAN storage.

ANS: This is possible but then only one of them can have exclusive access. I think you could use concurrent VG, not too sure if that works with HACMP, that forms another cluster.

2) Server A takes possession of resources /TEST and is active (HACMP)

ANS: I would keep the share on another server if you have one OR a NAS share.

3) Server B using NFS shares the /TEST from Server A.

ANS: That is possible. Don't put the entries in /etc/filesystems but manually mount it as part of a cluster start script

Cluster WAS Application (active:active) in Server A & B concurrently writes to /TEST.

4) When Server A crashes or goes offline, HACMP auto swing resources /TEST over to Server B and becomes active.

ANS: This /TEST filesystem must be in the /etc/filesystems and the cluster start script must export it as soon as it gets access to the VG and mounted it.

Server B NFS connection to Server A is lost when Server A becomes offline but empty mountpoint remains. When HACMP swing resources over (same mountpoint name), will there be problems?

ANS: That could be a problem. Why don't you mount the filesystem with a different name and then link it to a specific directory for WAS to write ?.
 

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LEARN ABOUT DEBIAN

gentest

GENTEST(1)							  [FIXME: manual]							GENTEST(1)

NAME

       gentest - Run random generic SMB operations against two SMB servers and show the differences in behavior

SYNOPSIS

       gentest {//server1/share1} {//server2/share2} {-U user%pass} {-U user%pass} [-s seed] [-o numops] [-a] [-A] [-i FILE] [-O] [-S FILE] [-L]
	       [-F] [-C] [-X]

DESCRIPTION

       gentest is a utility for detecting differences in behaviour between SMB servers. It will run a random set of generic operations against
       //server1/share1 and then the same random set against //server2/share2 and display the differences in the responses it gets.

       This utility is used by the Samba team to find differences in behaviour between Samba and Windows servers.

OPTIONS

       -U user%pass
	   Specify the user and password to use when logging on on the shares. This parameter is mandatory and has to be specified twice.

       -s seed
	   Seed the random number generator with the specified value.

       -o numops
	   Set the number of operations to perform.

       -a
	   Print the operations that are performed.

       -A
	   Backtrack to find minimal number of operations required to make the response to a certain call differ.

       -i FILE
	   Specify a file containing the names of fields that have to be ignored (such as time fields). See below for a description of the file
	   format.

       -O
	   Enable oplocks.

       -S FILE
	   Set preset seeds file. The default is gentest_seeds.dat.

       -L
	   Use preset seeds

       -F
	   Fast reconnect (just close files)

       -C
	   Continuous analysis mode

       -X
	   Analyse even when the test succeeded.

VERSION

       This man page is correct for version 4.0 of the Samba suite.

SEE ALSO

       Samba

AUTHOR

       This utility is part of the Samba[1] suite, which is developed by the global Samba Team[2].

       gentest was written by Andrew Tridgell.

       This manpage was written by Jelmer Vernooij.

NOTES

	1. Samba
	   http://www.samba.org/

	2. Samba Team
	   http://www.samba.org/samba/team/

[FIXME: source] 						    04/16/2014								GENTEST(1)
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