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Linux
EMC, PowerPath and issue on using LUN
Post 302582027 by dude2cool on Wednesday 14th of December 2011 06:52:31 PM
12-14-2011
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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)