642 lines
20 KiB
Plaintext
642 lines
20 KiB
Plaintext
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##
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## This is a template multipath-tools configuration file
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## Uncomment the lines relevent to your environment
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##
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#
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##
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## name : defaults
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## desc : multipath-tools default settings
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##
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#defaults {
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# #
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# # name : polling_interval
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# # scope : multipathd
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# # desc : interval between two path checks in seconds. For
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# # properly functioning paths, the interval between checks
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# # will gradually increase to (4 * polling_interval).
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# # values : n > 0
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# # default : 5
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# #
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# polling_interval 10
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#
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# #
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# # name : path_selector
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# # scope : multipath & multipathd
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# # desc : the default path selector algorithm to use
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# # these algorithms are offered by the kernel multipath target
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# # values : "round-robin 0" = Loop through every path in the path group,
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# # sending the same amount of IO to each.
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# # "queue-length 0" = Send the next bunch of IO down the path
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# # with the least amount of outstanding IO.
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# # "service-time 0" = Choose the path for the next bunch of IO
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# # based on the amount of outstanding IO to
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# # the path and its relative throughput.
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# # default : "service-time 0"
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# #
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# path_selector "service-time 0"
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#
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# #
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# # name : path_grouping_policy
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# # scope : multipath & multipathd
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# # desc : the default path grouping policy to apply to unspecified
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# # multipaths
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# # values : failover = 1 path per priority group
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# # multibus = all valid paths in 1 priority group
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# # group_by_serial = 1 priority group per detected serial
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# # number
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# # group_by_prio = 1 priority group per path priority
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# # value
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# # group_by_node_name = 1 priority group per target node name
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# # default : failover
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# #
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# path_grouping_policy multibus
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#
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# #
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# # name : uid_attribute
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# # scope : multipath & multipathd
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# # desc : the default udev attribute from which the path
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# # identifier should be generated.
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# # default : ID_SERIAL
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# #
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# uid_attribute "ID_SERIAL"
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#
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# #
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# # name : getuid_callout
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# # scope : multipath & multipathd
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# # desc : the default program and args to callout to obtain a unique
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# # path identifier. This parameter is deprecated.
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# # This parameter is deprecated, superseded by uid_attribute
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# # default : /lib/udev/scsi_id --whitelisted --device=/dev/%n
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# #
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# getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
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#
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# #
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# # name : prio
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# # scope : multipath & multipathd
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# # desc : the default function to call to obtain a path
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# # priority value. The ALUA bits in SPC-3 provide an
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# # exploitable prio value for example.
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# # default : const
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# #
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# prio "alua"
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#
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# #
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# # name : prio_args
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# # scope : multipath & multipathd
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# # desc : The arguments string passed to the prio function
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# # Most prio functions do not need arguments. The
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# # datacore prioritizer need one.
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# # default : (null)
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# #
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# prio_args "timeout=1000 preferredsds=foo"
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#
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# #
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# # name : features
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# # scope : multipath & multipathd
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# # desc : The default extra features of multipath devices.
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# # Syntax is "num[ feature_0 feature_1 ...]", where `num' is the
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# # number of features in the following (possibly empty) list of
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# # features.
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# # values : queue_if_no_path = Queue IO if no path is active; consider
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# # using the `no_path_retry' keyword instead.
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# # no_partitions = Disable automatic partitions generation via
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# # kpartx.
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# # default : "0"
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# #
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# features "0"
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# features "1 queue_if_no_path"
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# features "1 no_partitions"
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# features "2 queue_if_no_path no_partitions"
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#
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# #
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# # name : path_checker, checker
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# # scope : multipath & multipathd
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# # desc : the default method used to determine the paths' state
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# # values : readsector0|tur|emc_clariion|hp_sw|directio|rdac|cciss_tur
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# # default : directio
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# #
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# path_checker directio
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#
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# #
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# # name : rr_min_io
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# # scope : multipath & multipathd
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# # desc : the number of IO to route to a path before switching
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# # to the next in the same path group for the bio-based
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# # multipath implementation. This parameter is used for
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# # kernels version up to 2.6.31; newer kernel version
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# # use the parameter rr_min_io_rq
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# # default : 1000
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# #
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# rr_min_io 1000
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#
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# #
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# # name : rr_min_io_rq
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# # scope : multipath & multipathd
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# # desc : the number of IO to route to a path before switching
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# # to the next in the same path group for the request-based
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# # multipath implementation. This parameter is used for
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# # kernels versions later than 2.6.31.
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# # default : 1
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# #
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# rr_min_io_rq 1
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#
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# #
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# # name : flush_on_last_del
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# # scope : multipathd
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# # desc : If set to "yes", multipathd will disable queueing when the
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# # last path to a device has been deleted.
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# # values : yes|no
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# # default : no
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# #
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# flush_on_last_del yes
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#
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# #
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# # name : max_fds
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# # scope : multipathd
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# # desc : Sets the maximum number of open file descriptors for the
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# # multipathd process.
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# # values : max|n > 0
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# # default : None
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# #
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# max_fds 8192
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#
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# #
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# # name : rr_weight
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# # scope : multipath & multipathd
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# # desc : if set to priorities the multipath configurator will assign
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# # path weights as "path prio * rr_min_io"
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# # values : priorities|uniform
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# # default : uniform
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# #
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# rr_weight priorities
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#
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# #
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# # name : failback
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# # scope : multipathd
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# # desc : tell the daemon to manage path group failback, or not to.
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# # 0 means immediate failback, values >0 means deffered
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# # failback expressed in seconds.
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# # values : manual|immediate|n > 0
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# # default : manual
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# #
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# failback immediate
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#
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# #
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# # name : no_path_retry
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# # scope : multipath & multipathd
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# # desc : tell the number of retries until disable queueing, or
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# # "fail" means immediate failure (no queueing),
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# # "queue" means never stop queueing
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# # values : queue|fail|n (>0)
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# # default : (null)
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# #
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# no_path_retry queue
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#
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# #
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# # name : queue_without_daemon
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# # scope : multipathd
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# # desc : If set to "no", multipathd will disable queueing for all
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# # devices when it is shut down.
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# # values : yes|no
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# # default : yes
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# queue_without_daemon no
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#
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# #
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# # name : user_friendly_names
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# # scope : multipath & multipathd
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# # desc : If set to "yes", using the bindings file
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# # /etc/multipath/bindings to assign a persistent and
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# # unique alias to the multipath, in the form of mpath<n>.
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# # If set to "no" use the WWID as the alias. In either case
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# # this be will be overriden by any specific aliases in this
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# # file.
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# # values : yes|no
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# # default : no
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# user_friendly_names no
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#
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# #
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# # name : mode
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# # scope : multipath & multipathd
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# # desc : The mode to use for the multipath device nodes, in octal.
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# # values : 0000 - 0777
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# # default : determined by the process
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# mode 0644
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#
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# #
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# # name : uid
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# # scope : multipath & multipathd
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# # desc : The user id to use for the multipath device nodes. You
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# # may use either the numeric or symbolic uid
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# # values : <user_id>
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# # default : determined by the process
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# uid 0
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#
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# #
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# # name : gid
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# # scope : multipath & multipathd
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# # desc : The group id to user for the multipath device nodes. You
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# # may use either the numeric or symbolic gid
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# # values : <group_id>
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# # default : determined by the process
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# gid disk
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#
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# #
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# # name : checker_timeout
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# # scope : multipath & multipathd
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# # desc : The timeout to use for path checkers that issue scsi
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# # commands with an explicit timeout, in seconds.
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# # values : n > 0
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# # default : taken from /sys/block/sd<x>/device/timeout
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# checker_timeout 60
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#
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# #
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# # name : fast_io_fail_tmo
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# # scope : multipath & multipathd
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# # desc : The number of seconds the scsi layer will wait after a
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# # problem has been detected on a FC remote port before failing
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# # IO to devices on that remote port.
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# # values : off | n >= 0 (smaller than dev_loss_tmo)
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# # default : determined by the OS
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# fast_io_fail_tmo 5
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#
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# #
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# # name : dev_loss_tmo
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# # scope : multipath & multipathd
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# # desc : The number of seconds the scsi layer will wait after a
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# # problem has been detected on a FC remote port before
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# # removing it from the system.
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# # values : infinity | n > 0
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# # default : determined by the OS
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# dev_loss_tmo 600
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#
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# # name : bindings_file
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# # scope : multipath
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# # desc : The location of the bindings file that is used with
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# # the user_friendly_names option.
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# # values : <full_pathname>
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# # default : "/var/lib/multipath/bindings"
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# bindings_file "/etc/multipath/bindings"
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#
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# # name : wwids_file
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# # scope : multipath
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# # desc : The location of the wwids file multipath uses to
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# # keep track of the created multipath devices.
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# # values : <full_pathname>
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# # default : "/var/lib/multipath/wwids"
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# wwids_file "/etc/multipath/wwids"
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#
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# # name : reservation_key
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# # scope : multipath
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# # desc : Service action reservation key used by mpathpersist.
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# # values : <key>
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# # default : (null)
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# reservation_key "mpathkey"
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#
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#}
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#
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##
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## name : blacklist
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## scope : multipath & multipathd
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## desc : list of device names to discard as not multipath candidates
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## Devices can be identified by their device node name "devnode",
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## their WWID "wwid", or their vender and product strings
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## "device"
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## default : fd, hd, md, dm, sr, scd, st, ram, raw, loop, dcssblk
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##
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#blacklist {
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# wwid 26353900f02796769
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# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
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# devnode "^hd[a-z]"
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# devnode "^dcssblk[0-9]*"
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# device {
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# vendor DEC.*
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# product MSA[15]00
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# }
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#}
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##
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## name : blacklist_exceptions
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## scope : multipath & multipathd
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## desc : list of device names to be treated as multipath candidates
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## even if they are on the blacklist.
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## Note: blacklist exceptions are only valid in the same class.
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## It is not possible to blacklist devices using the devnode keyword
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## and to exclude some devices of them using the wwid keyword.
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## default : -
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##
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#blacklist_exceptions {
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# devnode "^dasd[c-d]+[0-9]*"
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# wwid "IBM.75000000092461.4d00.34"
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# wwid "IBM.75000000092461.4d00.35"
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# wwid "IBM.75000000092461.4d00.36"
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#}
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#
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##
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## name : multipaths
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## scope : multipath & multipathd
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## desc : list of multipaths finest-grained settings
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##
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#multipaths {
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# #
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# # name : multipath
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# # scope : multipath & multipathd
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# # desc : container for settings that apply to one specific multipath
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# #
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# multipath {
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# #
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# # name : wwid
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# # scope : multipath & multipathd
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# # desc : index of the container
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# #
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# wwid 3600508b4000156d700012000000b0000
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#
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# #
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# # name : alias
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# # scope : multipath & multipathd
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# # desc : symbolic name for the multipath. If you are using
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# # user_friendly_names, do not set the alias to
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# # mpath<n>. This may conflict with an automatically
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# # assigned user friendly name, and give you
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# # incorrect device node names.
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# #
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# alias yellow
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#
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# #
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# # name : path_grouping_policy
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# # scope : multipath & multipathd
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# # desc : path grouping policy to apply to this multipath
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# # values : failover, multibus, group_by_serial
|
||
|
|
# # values : failover = 1 path per priority group
|
||
|
|
# # multibus = all valid paths in 1 priority
|
||
|
|
# # group
|
||
|
|
# # group_by_serial = 1 priority group per detected
|
||
|
|
# # serial number
|
||
|
|
# # group_by_prio = 1 priority group per path
|
||
|
|
# # priority value
|
||
|
|
# # group_by_node_name = 1 priority group per target
|
||
|
|
# # node name
|
||
|
|
# #
|
||
|
|
# path_grouping_policy failover
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : path_selector
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : the path selector algorithm to use for this mpath
|
||
|
|
# # these algo are offered by the kernel mpath target
|
||
|
|
# # values : "round-robin 0"
|
||
|
|
# #
|
||
|
|
# path_selector "round-robin 0"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : failback
|
||
|
|
# # scope : multipathd
|
||
|
|
# # desc : tell the daemon to manage path group failback, or
|
||
|
|
# # not to. 0 means immediate failback, values >0 means
|
||
|
|
# # deffered failback expressed in seconds.
|
||
|
|
# # values : manual|immediate|n > 0
|
||
|
|
# #
|
||
|
|
# failback manual
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : rr_weight
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : if set to priorities the multipath configurator will
|
||
|
|
# # assign path weights as "path prio * rr_min_io"
|
||
|
|
# # values : priorities|uniform
|
||
|
|
# #
|
||
|
|
# rr_weight priorities
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : no_path_retry
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : tell the number of retries until disable queueing,
|
||
|
|
# # or "fail" means immediate failure (no queueing),
|
||
|
|
# # "queue" means never stop queueing
|
||
|
|
# # values : queue|fail|n (>0)
|
||
|
|
# #
|
||
|
|
# no_path_retry queue
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : rr_min_io
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : the number of IO to route to a path before switching
|
||
|
|
# # to the next in the same path group
|
||
|
|
# #
|
||
|
|
# rr_min_io 100
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : flush_on_last_del
|
||
|
|
# # scope : multipathd
|
||
|
|
# # desc : If set to "yes", multipathd will disable queueing
|
||
|
|
# # when the last path to a device has been deleted.
|
||
|
|
# # values : yes|no
|
||
|
|
# # default : no
|
||
|
|
# #
|
||
|
|
# flush_on_last_del yes
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : mode
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The mode to use for the multipath device nodes, in
|
||
|
|
# # octal.
|
||
|
|
# # values : 0000 - 0777
|
||
|
|
# # default : determined by the process
|
||
|
|
# mode 0644
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : uid
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The user id to use for the multipath device nodes.
|
||
|
|
# # You may use either the numeric or symbolic uid
|
||
|
|
# # values : <user_id>
|
||
|
|
# # default : determined by the process
|
||
|
|
# uid 0
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : gid
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The group id to user for the multipath device nodes.
|
||
|
|
# # You may use either the numeric or symbolic gid
|
||
|
|
# # values : <group_id>
|
||
|
|
# # default : determined by the process
|
||
|
|
# gid 0
|
||
|
|
#
|
||
|
|
# }
|
||
|
|
# multipath {
|
||
|
|
# wwid 1DEC_____321816758474
|
||
|
|
# alias red
|
||
|
|
# rr_weight priorities
|
||
|
|
# }
|
||
|
|
#}
|
||
|
|
#
|
||
|
|
##
|
||
|
|
## name : devices
|
||
|
|
## scope : multipath & multipathd
|
||
|
|
## desc : list of per storage controller settings
|
||
|
|
## overrides default settings (device_maps block)
|
||
|
|
## overriden by per multipath settings (multipaths block)
|
||
|
|
##
|
||
|
|
#devices {
|
||
|
|
# #
|
||
|
|
# # name : device
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : settings for this specific storage controller
|
||
|
|
# #
|
||
|
|
# device {
|
||
|
|
# #
|
||
|
|
# # name : vendor, product
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : index for the block
|
||
|
|
# #
|
||
|
|
# vendor "COMPAQ "
|
||
|
|
# product "HSV110 (C)COMPAQ"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : path_grouping_policy
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : path grouping policy to apply to this multipath
|
||
|
|
# # values : failover, multibus, group_by_serial
|
||
|
|
# # values : failover = 1 path per priority group
|
||
|
|
# # multibus = all valid paths in 1 priority
|
||
|
|
# # group
|
||
|
|
# # group_by_serial = 1 priority group per detected
|
||
|
|
# # serial number
|
||
|
|
# # group_by_prio = 1 priority group per path
|
||
|
|
# # priority value
|
||
|
|
# # group_by_node_name = 1 priority group per target
|
||
|
|
# # node name
|
||
|
|
# #
|
||
|
|
# path_grouping_policy failover
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : getuid_callout
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : the program and args to callout to obtain a unique
|
||
|
|
# # path identifier. Absolute path required
|
||
|
|
# #
|
||
|
|
# getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : prio
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : the function to call to obtain a path
|
||
|
|
# # weight. Weights are summed for each path group to
|
||
|
|
# # determine the next PG to use case of failure.
|
||
|
|
# # default : no callout, all paths equals
|
||
|
|
# #
|
||
|
|
# prio "hp_sw"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : prio_args
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The arguments string passed to the prio function
|
||
|
|
# # Most prio functions do not need arguments. The
|
||
|
|
# # datacore prioritizer need one.
|
||
|
|
# # default : (null)
|
||
|
|
# #
|
||
|
|
# prio_args "timeout=1000 preferredsds=foo"
|
||
|
|
#
|
||
|
|
# # name : path_checker, checker
|
||
|
|
# # scope : multipathd & multipathd
|
||
|
|
# # desc : path checking algorithm to use to check path state
|
||
|
|
# # values : readsector0|tur|emc_clariion|hp_sw|directio|rdac|
|
||
|
|
# # cciss_tur
|
||
|
|
# #
|
||
|
|
# path_checker directio
|
||
|
|
#
|
||
|
|
# # as already described
|
||
|
|
# path_selector "service-time 0"
|
||
|
|
#
|
||
|
|
# # as already described
|
||
|
|
# features "0"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : hardware_handler
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : If set, it specifies a module that will be used to
|
||
|
|
# # perform hardware specific actions when switching
|
||
|
|
# # path groups or handling IO errors
|
||
|
|
# # values : "0"|"1 emc"
|
||
|
|
# # default : "0"
|
||
|
|
# #
|
||
|
|
# hardware_handler "1 emc"
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : failback
|
||
|
|
# # scope : multipathd
|
||
|
|
# # desc : tell the daemon to manage path group failback, or
|
||
|
|
# # not to. 0 means immediate failback, values >0 means
|
||
|
|
# # deffered failback expressed in seconds.
|
||
|
|
# # values : manual|immediate|n > 0
|
||
|
|
# #
|
||
|
|
# failback 30
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : rr_weight
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : if set to priorities the multipath configurator will
|
||
|
|
# # assign path weights as "path prio * rr_min_io"
|
||
|
|
# # values : priorities|uniform
|
||
|
|
# #
|
||
|
|
# rr_weight priorities
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : no_path_retry
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : tell the number of retries until disable queueing,
|
||
|
|
# # or "fail" means immediate failure (no queueing),
|
||
|
|
# # "queue" means never stop queueing
|
||
|
|
# # values : queue|fail|n (>0)
|
||
|
|
# #
|
||
|
|
# no_path_retry queue
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : rr_min_io
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : the number of IO to route to a path before switching
|
||
|
|
# # to the next in the same path group
|
||
|
|
# #
|
||
|
|
# rr_min_io 100
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : flush_on_last_del
|
||
|
|
# # scope : multipathd
|
||
|
|
# # desc : If set to "yes", multipathd will disable queueing
|
||
|
|
# # when the last path to a device has been deleted.
|
||
|
|
# # values : yes|no
|
||
|
|
# #
|
||
|
|
# flush_on_last_del yes
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : product_blacklist
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : product strings to blacklist for this vendor
|
||
|
|
# #
|
||
|
|
# product_blacklist LUN_Z
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : fast_io_fail_tmo
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The number of seconds the scsi layer will wait after
|
||
|
|
# # a problem has been detected on a FC remote port
|
||
|
|
# # before failing IO to devices on that remote port.
|
||
|
|
# # values : off | n >= 0 (smaller than dev_loss_tmo)
|
||
|
|
# fast_io_fail_tmo 5
|
||
|
|
#
|
||
|
|
# #
|
||
|
|
# # name : dev_loss_tmo
|
||
|
|
# # scope : multipath & multipathd
|
||
|
|
# # desc : The number of seconds the scsi layer will wait after
|
||
|
|
# # a problem has been detected on a FC remote port
|
||
|
|
# # before removing it from the system.
|
||
|
|
# # values : n > 0
|
||
|
|
# dev_loss_tmo 600
|
||
|
|
# }
|
||
|
|
# device {
|
||
|
|
# vendor "COMPAQ "
|
||
|
|
# product "MSA1000 "
|
||
|
|
# path_grouping_policy multibus
|
||
|
|
# path_checker tur
|
||
|
|
# rr_weight priorities
|
||
|
|
# }
|
||
|
|
#}
|