Unknown switch: (null) multipath-tools v0.15.1 (08/27, 2026) Usage: /usr/bin/multipath [-v level] [-B|-d|-i|-q|-r] [-b file] [-p policy] [device] /usr/bin/multipath [-v level] [-R retries] -f device /usr/bin/multipath [-v level] [-R retries] -F /usr/bin/multipath [-v level] [-l|-ll] [device] /usr/bin/multipath [-v level] [-a|-w] device /usr/bin/multipath [-v level] -W /usr/bin/multipath [-v level] [-i] [-c|-C] device /usr/bin/multipath [-v level] [-i] [-u|-U] /usr/bin/multipath [-h|-t|-T] Where: -h print this usage text -l show multipath topology (sysfs and DM info) -ll show multipath topology (maximum info) -e enable foreign libraries with -l/-ll -f flush a multipath device map -F flush all multipath device maps -a add a device wwid to the wwids file -c check if a device should be a path in a multipath device -C check if a multipath device has usable paths -q allow queue_if_no_path when multipathd is not running -d dry run, do not create or update devmaps -t display the currently used multipathd configuration -T display the multipathd configuration without builtin defaults -r force devmap reload -i ignore wwids file -B treat the bindings file as read only -b fil bindings file location -w remove a device from the wwids file -W reset the wwids file include only the current devices -R num number of times to retry removes of in-use devices -u check if the device specified in the program environment should be a path in a multipath device -U check if the device specified in the program environment is a multipath device with usable paths, see -C flag -p pol force all maps to specified path grouping policy: . failover one path per priority group . multibus all paths in one priority group . group_by_serial one priority group per serial . group_by_prio one priority group per priority lvl . group_by_node_name one priority group per target node . group_by_tpg one priority group per ALUA target port group -v lvl verbosity level: . 0 no output . 1 print created devmap names only . 2 default verbosity . 3 print debug information device action limited to: . multipath named 'device' (ex: mpath0) . multipath whose wwid is 'device' (ex: 60051...) . multipath including the path named 'device' (ex: /dev/sda or /dev/dm-0) . multipath including the path with maj:min 'device' (ex: 8:0)