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Operating Systems Linux Red Hat Cannot remove root Filesystem from the Multipath configuration Post 302885307 by ikn3 on Friday 24th of January 2014 01:39:27 PM
Old 01-24-2014
Have you tried. Removing the wwid from /etc/multipath.conf
And reload multipathd

Not sure if /etc/multipath/wwid is updated automatically. But when we had to bring a new LUN into multipath. The steps were to add WWID to multipath.conf and reload multipathd. This was in RHEL 5.5 though. Now if we consider going backwards the earlier steps would work. Not tried and tested
 

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MP_DeregisterPlugin(3MPAPI)			   Common Multipath Management Library Functions		       MP_DeregisterPlugin(3MPAPI)

NAME
MP_DeregisterPlugin - deregister a plugin SYNOPSIS
cc [ flag... ] file... -lMPAPI [ library... ] #include <mpapi.h> MP_STATUS MP_DeregisterPlugin(MP_WCHAR *pPluginId); PARAMETERS
pPluginId A pointer to a Plugin ID previously registered using the MP_RegisterPlugin(3MPAPI) API. DESCRIPTION
The MP_DeregisterPlugin() function deregisters a plugin from the common library. The plugin will no longer be invoked by the common library. This API does not dynamically remove the plugin from a running library instance. Instead, it prevents an application that is currently not using a plugin from accessing the plugin. This is generally the behav- ior expected from dynamically loaded modules. RETURN VALUES
MP_STATUS_INVALID_PARAMETER The pPluginId parameter is null or specifies a memory area that is not executable. MP_STATUS_UNKNOWN_FN The pPluginId parameter is not the same as a previously registered function. MP_STATUS_SUCCESS The pPluginId parameter is deregistered successfully. MP_STATUS_FAILED The pPluginIdparameter deregistration is not possible at this time FILES
/etc/mpapi.conf MPAPI library configuration file ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard: ANSI INCITS 412 | | |Multipath Management API | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
libMPAPI(3LIB), MP_RegisterPlugin(3MPAPI), mpapi.conf(4), attributes(5) Multipath Management API Version 1.0 SunOS 5.11 15 Feb 2006 MP_DeregisterPlugin(3MPAPI)
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