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Operating Systems AIX Increase LUN size in AIX with VIOS and HACMP Post 302606639 by funksen on Monday 12th of March 2012 10:00:11 AM
Old 03-12-2012
we have almost the same configuration on some clusters, resizing luns (storage DS8300) works without problems, I think even without cfgmgr on both vio and lpar, at least it's not necessary on the vio server

as gito said, dynamic resizing of hdisks that belong to a concurrent vg working in concurrent active or concurrent passive mode is not supported, so you need to at least bring the resource group down once

just could imagine the problem in conjunction with your ds4xxx storage and the drivers on the vio servers

we have clusters with 80+ concurrent pvs, imagine remapping of every single one (we have a script for this, but anyways..), that must be a bug, I would open an IBM ticket in your case
 

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UML_MOUNT(1)						      General Commands Manual						      UML_MOUNT(1)

NAME
uml_mount -- allows to mount UMLFS file system using the fuse libraries SYNOPSIS
uml_mount [mount-point] [options] DESCRIPTION
This manual page documents briefly the uml_mount command. This command uses the FUSE (File system in USErspace) libraries and invokes the FUSE_MOUNT function which expects a mount point and some parameters as arguments. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. For a practi- cal example, please refer to the link below. uml_mount is used to mount UMLFS file system. ARGUMENTS
mount-point This is the mount point where to mount the UMLFS file system with. [options] These are the other options accepted by the 'fuse_mount' function. General options: -h The "-h" option prints the help. -V The "-V" option prints the version. -o opt,[opt...] The "-o" option allows to provide further mount (only, not un-mount) option(s) to the command line. FUSE options: -d -o debug The "-d" option enable the debug output. It implies "-f". -f The "-f" option foregrounds the operation. -s The "-s" options disable multi-threaded operation. -o allow_other The "-o allow_other" option allows access to other users. -o allow_root The "-o allow_root" option allows access to root. -o nonempty The "-o nonempty" option allows mounts over non-empty file/dir. -o default_permissions The "-o default_permissions" enables permission checking by kernel. -o fsname=NAME The "-o fsname=NAME" option sets file system name. -o large_read The "-o large_read" option issues large read requests (2.4 only). -o max_read=N The "-o max_read=N" option sets the maximum size of read requests. SEE ALSO
The HostFs (link to URL http://user-mode-linux.sourceforge.net/new/hostfs.html) usage explanation within the User-Mode-Linux Web Site AUTHOR
uml_mount was written by Jeff Dike. This manual page was written by Stefano Melchior (stefano.melchior@openlabs.it) for the Debian GNU/Linux system, based on material in the Official User Mode Linux Web Site. UML_MOUNT(1)
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