Provided by: fence-agents_4.4.0-2_amd64 bug

NAME

       fence_scsi - Fence agent for SCSI persistent reservation

DESCRIPTION

       fence_scsi  is  an  I/O  fencing agent that uses SCSI-3 persistent reservations to control
       access  to  shared  storage  devices.  These  devices  must  support   SCSI-3   persistent
       reservations  (SPC-3  or  greater)  as  well  as  the "preempt-and-abort" subcommand.  The
       fence_scsi agent works by having each node in the cluster register a unique key  with  the
       SCSI  device(s).  Once  registered,  a  single  node will become the reservation holder by
       creating a "write exclusive, registrants only" reservation on the device(s). The result is
       that  only  registered  nodes  may write to the device(s). When a node failure occurs, the
       fence_scsi agent will remove the key belonging to the failed node from the device(s).  The
       failed node will no longer be able to write to the device(s). A manual reboot is required.

       When  used as a watchdog device you can define e.g. retry=1, retry-sleep=2 and verbose=yes
       parameters in /etc/sysconfig/stonith if you have issues with it failing.

       fence_scsi accepts options on the command  line  as  well  as  from  stdin.  Fenced  sends
       parameters  through  stdin  when  it execs the agent. fence_scsi can be run by itself with
       command line options.  This is useful for testing and for turning outlets on or  off  from
       scripts.

       Vendor URL:

PARAMETERS


       -o, --action=[action]
              Fencing action (Default Value: off)

       -a, --aptpl
              Use the APTPL flag for registrations. This option is only used for the 'on' action.

       -d, --devices=[devices]
              List of devices to use for current operation. Devices can be  comma-separated  list
              of  raw  devices  (eg.  /dev/sdc).  Each  device  must  support  SCSI-3  persistent
              reservations.

       -k, --key=[key]
              Key to use for the current operation. This key should be unique to a node. For  the
              "on"  action,  the  key  specifies  the key use to register the local node. For the
              "off" action, this key specifies the key to be removed from the device(s).

       -n, --plug=[nodename]
              Name of the node to be fenced. The node name is used to generate the key value used
              for  the  current  operation.  This  option  will  be ignored when used with the -k
              option. This parameter is always required.

       -f, --logfile
              Log output (stdout and stderr) to file

       -q, --quiet
              Disable logging to stderr. Does not affect --verbose or --debug-file or logging  to
              syslog.

       -v, --verbose
              Verbose mode

       -D, --debug-file=[debugfile]
              Write debug information to given file

       -V, --version
              Display version information and exit

       -h, --help
              Display help and exit

       --delay=[seconds]
              Wait X seconds before fencing is started (Default Value: 0)

       --login-timeout=[seconds]
              Wait X seconds for cmd prompt after login (Default Value: 5)

       --power-timeout=[seconds]
              Test X seconds for status change after ON/OFF (Default Value: 20)

       --power-wait=[seconds]
              Wait X seconds after issuing ON/OFF (Default Value: 0)

       --shell-timeout=[seconds]
              Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       --retry-on=[attempts]
              Count of attempts to retry power on (Default Value: 1)

       --corosync-cmap-path=[path]
              Path to corosync-cmapctl binary (Default Value: /usr/sbin/corosync-cmapctl)

       --sg_persist-path=[path]
              Path to sg_persist binary (Default Value: /usr/bin/sg_persist)

       --sg_turs-path=[path]
              Path to sg_turs binary (Default Value: /usr/bin/sg_turs)

       --vgs-path=[path]
              Path to vgs binary (Default Value: /sbin/vgs)

ACTIONS


       on     Power on machine.

       off    Power off machine.

       status This returns the status of the plug/virtual machine.

       monitor
              Check the health of fence device

       metadata
              Display the XML metadata describing this resource.

       manpage
               The operational behavior of this is not known.

       validate-all
              Validate if all required parameters are entered.

STDIN PARAMETERS


       action Fencing action (Default Value: off)

       aptpl  Use the APTPL flag for registrations. This option is only used for the 'on' action.

       devices
              List of devices to use for current operation. Devices can be  comma-separated  list
              of  raw  devices  (eg.  /dev/sdc).  Each  device  must  support  SCSI-3  persistent
              reservations.

       key    Key to use for the current operation. This key should be unique to a node. For  the
              "on"  action,  the  key  specifies  the key use to register the local node. For the
              "off" action, this key specifies the key to be removed from the device(s).

       plug   Name of the node to be fenced. The node name is used to generate the key value used
              for  the  current  operation.  This  option  will  be ignored when used with the -k
              option. This parameter is always required. Obsoletes: port

       logfile
              Log output (stdout and stderr) to file

       quiet  Disable logging to stderr. Does not affect --verbose or --debug-file or logging  to
              syslog.

       verbose
              Verbose mode

       debug_file
              Write debug information to given file Obsoletes: debug

       version
              Display version information and exit

       help   Display help and exit

       delay  Wait X seconds before fencing is started (Default Value: 0)

       login_timeout
              Wait X seconds for cmd prompt after login (Default Value: 5)

       power_timeout
              Test X seconds for status change after ON/OFF (Default Value: 20)

       power_wait
              Wait X seconds after issuing ON/OFF (Default Value: 0)

       shell_timeout
              Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       retry_on
              Count of attempts to retry power on (Default Value: 1)

       corosync_cmap_path
              Path to corosync-cmapctl binary (Default Value: /usr/sbin/corosync-cmapctl)

       sg_persist_path
              Path to sg_persist binary (Default Value: /usr/bin/sg_persist)

       sg_turs_path
              Path to sg_turs binary (Default Value: /usr/bin/sg_turs)

       vgs_path
              Path to vgs binary (Default Value: /sbin/vgs)