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Full Discussion: Reuse a LUN
Homework and Emergencies Emergency UNIX and Linux Support Reuse a LUN Post 302689379 by Shirishlnx on Tuesday 21st of August 2012 08:35:37 AM
Old 08-21-2012
Yes.. there's serviceguard cluster and each LUN (from HP Storage VA7110) having true copy and business copy ..

- Have check business copy is taken but is of 0MB size .. (AM not sure why..)

- Have added a LUN on Primary cluster server and are able to see the extended space in VG and both path ..

< ON Server-1 >
Code:
# strings /etc/lvmtab
/dev/vg00
/dev/dsk/c1t2d0
/dev/dsk/c2t2d0
/dev/vg01
/dev/dsk/c5t0d2
/dev/dsk/c5t0d3
/dev/dsk/c4t0d2
/dev/dsk/c4t0d3
/dev/dsk/c5t0d1
/dev/dsk/c4t0d1



# vgdisplay -v vg01
..
..
      --- Physical volumes ---
   PV Name                     /dev/dsk/c5t0d2
   PV Name                     /dev/dsk/c4t0d2  Alternate Link
   PV Status                   available
   Total PE                    5631
   Free PE                     0
   Autoswitch                  On

   PV Name                     /dev/dsk/c5t0d3
   PV Name                     /dev/dsk/c4t0d3  Alternate Link
   PV Status                   available
   Total PE                    5631
   Free PE                     1
   Autoswitch                  On

   PV Name                     /dev/dsk/c5t0d1
   PV Name                     /dev/dsk/c4t0d1  Alternate Link
   PV Status                   available
   Total PE                    5119
   Free PE                     1279
   Autoswitch                  On

Now I want same to be updated on secondary node vg01 .

?? Do vgchgid requires any downtime .. on primary cluster
Last edited by Shirishlnx; 08-21-2012 at 09:51 AM..
 

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LEARN ABOUT DEBIAN

sg_emc_trespass

SG_EMC_TRESPASS(8)						     SG3_UTILS							SG_EMC_TRESPASS(8)

NAME

       sg_emc_trespass - Changes ownership of a LUN from another Service-Processor to this one.

SYNOPSIS

       sg_emc_trespass [-d] [-hr] [-s] [-V] DEVICE

DESCRIPTION

       sg_emc_trespass	sends  an EMC-specific Trespass Command to the DEVICE with the selected options. This Mode Select changes the ownership of
       the LUN of the device from another Service-Processor to the one the command was received on.

OPTIONS

       Arguments to long options are mandatory for short options as well.

       -d     outputs some extra debug information associated with executing this command

       -hr    Sets the 'Honor Reservation' bit in the command. If set, the trespass will only succeed to change the ownership from the Peer SP	if
	      the Peer SP does not have an outstanding SCSI reservation for the LUN. By default, the reservation state will be ignored.

       -s     Send the short version of the trespass command instead of the long version. The short version is supported on the EMC FC5300, FC4500
	      and FC4700. The long version (default) is supported on the CLARiiON CX and AX family arrays.

       -V     print out version string then exit.

       In the 2.4 series of Linux kernels the DEVICE must be a SCSI generic (sg) device. In the 2.6 series block devices (e.g. SCSI disks and  DVD
       drives) can also be specified. For example "sg_start 0 /dev/sda" will work in the 2.6 series kernels.

EXIT STATUS

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

AUTHOR

       Written by Lars Marowsky-Bree, based on sg_start.

REPORTING BUGS

       Report bugs to <dgilbert at interlog dot com>.

COPYRIGHT

       Copyright (C) 2004 Lars Marowsky-Bree, 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-1.23							   January 2007 						SG_EMC_TRESPASS(8)
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