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dmmp_path_status_get(3)     Device Mapper Multipath API - libdmmp Manual     dmmp_path_status_get(3)



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  ar‐
       rays. These paths will return valid answers to certain SCSI commands (tur, read_capacity, in‐
       quiry, 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)