Red Hat DEVICE-MAPPER MULTIPATH 5.2 Bedienungsanleitung PDF herunterladen (Seite 28)

DotHill – Linux Device Mapper Multipath “How To” for Storage Revision 4

# #

# # 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

# # group_by_prio = 1 priority group per path

# # priority value

# # group_by_node_name = 1 priority group per target

# # node name

# # 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 : /sbin/scsi_id -g -u -s

# #

# getuid_callout "/sbin/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 algorithm to use to check path state

# # values : readsector0, tur

# # default : readsector0

# #

# path_checker readsector0

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Red Hat DEVICE-MAPPER MULTIPATH 5.2 Bedienungsanleitung Seite 28

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