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Full Discussion: How to resize filesystem by resizing the LUN without impact to applications.?
Operating Systems Linux Red Hat How to resize filesystem by resizing the LUN without impact to applications.? Post 302830249 by rbatte1 on Monday 8th of July 2013 11:04:42 AM
Old 07-08-2013
It would be simpler to add a LUN to the OS and then add that to the volume group. You can then work with the filesystems cleanly, even if they are mounted. Is there a reason you cannot allocate another LUN to the virtual server? I'm told by our VMWare man that we have a limited number of LUNs he can attach.

If you are trying to keep it simple for neatness, could you add a much larger LUN, add it to the volume group, use pvmove to migrate the data from the existing LUN to the new one and release the old LUN? That way you will end up with the same number of LUNs attached.




Robin
Liverpool/Blackburn
UK
 

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LEARN ABOUT CENTOS

sg_rdac

SG_RDAC(8)							     SG3_UTILS								SG_RDAC(8)

NAME

       sg_rdac - display or modify SCSI RDAC Redundant Controller mode page

SYNOPSIS

       sg_rdac [-a] [-f=LUN] [-v] [-V] DEVICE

DESCRIPTION

       sg_rdac	displays  or  modifies	the RDAC controller settings via the Redundant Controller mode page (0x2C). When modifying the settings it
       allows to transfer the ownership of individual drives to the controller the command was received on.

OPTIONS

       -a     Transfer all (visible) devices

       -f=LUN Transfer the device identified by LUN. This command will only work if the controller supports 'Dual Active Mode' (aka  active/active
	      mode).

       -v     be verbose

       -V     print version string then exit

EXIT STATUS

       The exit status of sg_rdac is 0 when it is successful. Otherwise see the sg3_utils(8) man page.

AUTHOR

       Written by Hannes Reinecke <hare at suse dot com>, based on sg_emc_trespass.

REPORTING BUGS

       Report bugs to <dgilbert at interlog dot com>.

COPYRIGHT

       Copyright (C) 2006-2012 Hannes Reinecke, Douglas Gilbert.
       This  software  is distributed under the GPL version 2. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR-
       POSE.

sg3_utils-1.35							   November 2012							SG_RDAC(8)
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