Installation guide

group. T he default value is 1000.
rr_weight If set to priorities, then instead of sending rr_min_io
requests to a path before calling selector to choose the next
path, the number of requests to send is determined by rr_m in_io
times the path's priority, as determined by the prio_callout
program. Currently, there are priority callouts only for devices that
use the group_by_prio path grouping policy, which means that
all the paths in a path group will always have the same priority.
If set to uniform , all path weights are equal. T he default value is
uniform.
no_path_retry
A numeric value for this attribute specifies the number of times the
system should attempt to use a failed path before disabling
queueing.
A value of fail indicates immediate failure, without queuing.
A value of queue indicates that queuing should not stop until the
path is fixed.
The default value is (null).
flush_on_last_del (RHEL 4.7 and later) If set to yes, the m ultipathd daemon will
disable queueing when the last path to a device has been deleted.
The default value is no.
The following example shows a device entry in the multipath configuration file.
# }
# device {
# vendor "COMPAQ "
# product "MSA1000 "
# path_grouping_policy multibus
# path_checker tur
# rr_weight priorities
# }
#}
Chapter 4. The DM-Multipath Configuration File
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