dmmp_path_status_get(3)           Device Mapper Multipath API - libdmmp Manual

NAME
       dmmp_path_status_get - Retrieve the path status.

SYNOPSIS
       uint32_t dmmp_path_status_get (struct dmmp_path *dmmp_p);

ARGUMENTS
       dmmp_p      Pointer of 'struct dmmp_path'.  If this pointer is NULL,
                   your program will be terminated by assert.

DESCRIPTION
       The valid path statuses are:

       * DMMP_PATH_STATUS_UNKNOWN

       * DMMP_PATH_STATUS_DOWN

       Path is down and you shouldn't try to send commands to it.

       * DMMP_PATH_STATUS_UP

       Path is up and I/O can be sent to it.

       * DMMP_PATH_STATUS_SHAKY

       Only emc_clariion checker when path not available for "normal"
       operations.

       * DMMP_PATH_STATUS_GHOST

       Only hp_sw and rdac checkers.  Indicates a "passive/standby" path on
       active/passive HP arrays. These paths will return valid answers to
       certain SCSI commands (tur, read_capacity, inquiry, start_stop), but
       will fail I/O commands.  The path needs an initialization command to be
       sent to it in order for I/Os to succeed.

       * DMMP_PATH_STATUS_PENDING

       Available for all async checkers when a check IO is in flight.

       * DMMP_PATH_STATUS_TIMEOUT

       Only tur checker when command timed out.

       * DMMP_PATH_STATUS_DELAYED

       If a path fails after being up for less than delay_watch_checks checks,
       when it comes back up again, it will not be marked as up until it has
       been up for delay_wait_checks checks. During this time, it is marked as
       "delayed".

RETURN
       uint32_t.

March 2018                   dmmp_path_status_get      dmmp_path_status_get(3)