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Diffstat (limited to 'community-testing/multipath-tools/multipath.conf.annotated')
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1 files changed, 362 insertions, 0 deletions
diff --git a/community-testing/multipath-tools/multipath.conf.annotated b/community-testing/multipath-tools/multipath.conf.annotated new file mode 100644 index 000000000..b79488413 --- /dev/null +++ b/community-testing/multipath-tools/multipath.conf.annotated @@ -0,0 +1,362 @@ +## +## This is a template multipath-tools configuration file +## Uncomment the lines relevent to your environment +## +# +## +## name : defaults +## desc : multipath-tools default settings +## +#defaults { +# # +# # name : udev_dir +# # desc : directory where udev creates its device nodes +# # default : /dev +# # +# udev_dir /dev +# +# # +# # name : polling_interval +# # scope : multipathd +# # desc : interval between two path checks in seconds +# # default : 5 +# # +# polling_interval 10 +# +# # +# # name : selector +# # scope : multipath +# # desc : the default path selector algorithm to use +# # these algorithms are offered by the kernel multipath target +# # values : "round-robin 0" +# # default : "round-robin 0" +# # +# selector "round-robin 0" +# +# # +# # name : path_grouping_policy +# # scope : multipath +# # desc : the default path grouping policy to apply to unspecified +# # multipaths +# # default : multibus +# # +# path_grouping_policy multibus +# +# # +# # name : getuid_callout +# # scope : multipath +# # desc : the default program and args to callout to obtain a unique +# # path identifier. Absolute path required +# # default : /usr/lib/udev/scsi_id -g -u -s +# # +# getuid_callout "/usr/lib/udev/scsi_id -g -u -s /block/%n" +# +# # +# # name : prio_callout +# # scope : multipath +# # desc : the default program and args to callout to obtain a path +# # priority value. The ALUA bits in SPC-3 provide an +# # exploitable prio value for example. "none" is a valid value +# # default : (null) +# # +# #prio_callout "/bin/true" +# +# # +# # name : path_checker +# # scope : multipath & multipathd +# # desc : the default method used to determine the paths' state +# # values : readsector0|tur|emc_clariion|hp_sw|directio +# # default : directio +# # +# #path_checker directio +# +# # +# # name : rr_min_io +# # scope : multipath +# # desc : the number of IO to route to a path before switching +# # to the next in the same path group +# # default : 1000 +# # +# rr_min_io 100 +# +# # +# # name : rr_weight +# # scope : multipath +# # desc : if set to priorities the multipath configurator will assign +# # path weights as "path prio * rr_min_io" +# # values : priorities|uniform +# # default : uniform +# # +# rr_weight priorities +# +# # +# # 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 +# # default : immediate +# # +# failback manual +# +# # +# # 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) +# # default : (null) +# # +# #no_path_retry queue +# +# # +# # name : user_friendly_names +# # scope : multipath +# # desc : If set to "yes", using the bindings file +# # /var/lib/multipath/bindings to assign a persistent and +# # unique alias to the multipath, in the form of mpath<n>. +# # If set to "no" use the WWID as the alias. In either case +# # this be will be overriden by any specific aliases in this +# # file. +# # values : yes|no +# # default : no +# user_friendly_names no +# +#} +# +## +## name : blacklist +## scope : multipath & multipathd +## desc : list of device names to discard as not multipath candidates +## default : cciss, fd, hd, md, dm, sr, scd, st, ram, raw, loop +## +#blacklist { +# wwid 26353900f02796769 +# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" +# devnode "^hd[a-z][[0-9]*]" +# devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]" +# device { +# vendor DEC.* +# product MSA[15]00 +# } +#} +## +## name : blacklist_exceptions +## scope : multipath & multipathd +## desc : list of device names to be treated as multipath candidates +## even if they are on the blacklist. +## Note: blacklist exceptions are only valid in the same class. +## It is not possible to blacklist devices using the devnode keyword +## and to exclude some devices of them using the wwid keyword. +## default : - +## +#blacklist_exceptions { +# devnode "^dasd[c-d]+[0-9]*" +# wwid "IBM.75000000092461.4d00.34" +# wwid "IBM.75000000092461.4d00.35" +# wwid "IBM.75000000092461.4d00.36" +#} +# +## +## name : multipaths +## scope : multipath & multipathd +## desc : list of multipaths finest-grained settings +## +#multipaths { +# # +# # name : multipath +# # scope : multipath & multipathd +# # desc : container for settings that apply to one specific multipath +# # +# multipath { +# # +# # name : wwid +# # scope : multipath & multipathd +# # desc : index of the container +# # +# wwid 3600508b4000156d700012000000b0000 +# +# # +# # name : alias +# # scope : multipath +# # desc : symbolic name for the multipath +# # +# alias yellow +# +# # +# # name : path_grouping_policy +# # scope : multipath +# # desc : path grouping policy to apply to this multipath +# # values : failover, multibus, group_by_serial +# # default : failover +# # +# path_grouping_policy multibus +# +# # +# # name : path_checker +# # scope : multipathd +# # desc : path checking alorithm to use to check path state +# # values : readsector0|tur|emc_clariion|hp_sw|directio +# # default : directio +# # +# # path_checker directio +# +# # +# # name : path_selector +# # desc : the path selector algorithm to use for this mpath +# # these algo are offered by the kernel mpath target +# # values : "round-robin 0" +# # default : "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 +# # default : immediate +# # +# failback manual +# +# # +# # 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) +# # default : (null) +# # +# #no_path_retry queue +# +# # +# # name : rr_min_io +# # scope : multipath +# # desc : the number of IO to route to a path before switching +# # to the next in the same path group +# # default : 1000 +# # +# rr_min_io 100 +# } +# 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 +# # desc : path grouping policy to apply to multipath hosted +# # by this storage controller +# # 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 +# # default : failover +# # +# path_grouping_policy multibus +# +# # +# # name : getuid_callout +# # scope : multipath +# # desc : the program and args to callout to obtain a unique +# # path identifier. Absolute path required +# # default : /usr/lib/udev/scsi_id -g -u -s +# # +# getuid_callout "/usr/lib/udev/scsi_id -g -u -s /block/%n" +# +# # +# # name : prio_callout +# # scope : multipath +# # desc : the program and args to callout to obtain a path +# # weight. Weights are summed for each path group to +# # determine the next PG to use case of failure. +# # "none" is a valid value. +# # default : no callout, all paths equals +# # +# prio_callout "/sbin/mpath_prio_balance_units %d" +# +# # +# # name : path_checker +# # scope : multipathd +# # desc : path checking alorithm to use to check path state +# # values : readsector0|tur|emc_clariion|hp_sw|directio +# # default : directio +# # +# path_checker directio +# +# # +# # name : path_selector +# # desc : the path selector algorithm to use for this mpath +# # these algo are offered by the kernel mpath target +# # values : "round-robin 0" +# # default : "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 +# # default : immediate +# # +# failback 30 +# +# # +# # name : rr_min_io +# # scope : multipath +# # desc : the number of IO to route to a path before switching +# # to the next in the same path group +# # default : 1000 +# # +# rr_min_io 100 +# +# # +# # name : product_blacklist +# # scope : multipath & multipathd +# # desc : product strings to blacklist for this vendor +# # default : none +# # +# product_blacklist LUN_Z +# } +# device { +# vendor "COMPAQ " +# product "MSA1000 " +# path_grouping_policy multibus +# path_checker tur +# rr_weight priorities +# } +#} |