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Operating Systems AIX Sysmirror 7.1.3 Resource Group NFS mounts Post 303001238 by MichaelFelt on Monday 31st of July 2017 07:03:13 AM
Old 07-31-2017
Something else to look into (bakunin please verify still possible - I do not have a PowerHA/SystemMirror config to review) would be to remove the mount/unmount from the start/stop scripts.

Instead, make the mounts part of the resource group - and the resource group makes sure the mounts are active before calling the start script and the unmounts are called after the stop script.

Or, create a resource group parent-child relationship (e.g., you want the NFS mounts active across the cluster, but the application is active on only one node.) With this setup - to activate the current application (call this appA) it would only start if the NFS mounts are already active (appMounts).

As Bakunin says - PowerHA/SystemMirror can make things worse if you do not understand it. If you need short term assistance I would recommend contacting IBM Lab Services for a healthcheck and/or workshop (on-site)
Or, contact an education center for SystemMirror/PowerHA class schedule and prices - and go with at least two admins (or you become the SPOF - single point of failure) Smilie
 

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AUTOMOUNT(8)						    BSD System Manager's Manual 					      AUTOMOUNT(8)

NAME
automount -- update autofs mounts SYNOPSIS
automount [-D name=value] [-L] [-c] [-f] [-o options] [-v] [-u] DESCRIPTION
When called without options, the automount command parses the auto_master(5) configuration file and any direct maps that it references, and mounts or unmounts autofs(4) filesystems to match. These options are available: -D Define a variable. It is only useful with -L. -L Do not mount or unmount anything. Instead parse auto_master(5) and any direct maps, then print them to standard output. When specified more than once, all the maps, including indirect ones, will be parsed and shown. This is useful when debugging configuration problems. -c Flush caches, discarding possibly stale information obtained from maps and directory services. -f Force unmount, to be used with -u. -o Specify mount options to be used along with the ones specified in the maps. It is only useful with -L. -u Try to unmount filesystems mounted by automountd(8). autofs(5) mounts are not unmounted. To unmount all autofs mounts, use umount -At autofs. -v Increase verbosity. EXIT STATUS
The automount utility exits 0 on success, and >0 if an error occurs. EXAMPLES
Unmount all filesystems mounted by automountd(8): automount -u SEE ALSO
auto_master(5), autofs(5), automountd(8), autounmountd(8) HISTORY
The automount command appeared in FreeBSD 10.1. AUTHORS
The automount was developed by Edward Tomasz Napierala <trasz@FreeBSD.org> under sponsorship from the FreeBSD Foundation. BSD
November 22, 2014 BSD
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