new : "show map $map topology", mimics the "multipath -ll $map" output. new : "show topology", mimics the "multipath -ll" output. new : "show maps stats" drops some statistics about multipaths events. new : "show config" drops a config file as seen by the live daemon. enh : the CLI parser now accept unambiguous shortcuts, like "sho topo" for "show topology". udev rules deprecation, as events are acted upon directly through uevent in the daemon. DM driving directly from the daemon, without resorting to multipath(8). checkers: Checkers attached to different paths of a same multipath can share information through a context pointer in "struct multipath". lib: fix user_friendly_names race leading to a mpathX being served multiple times. lib: listen events from udev socket instead of netlink : proper serialization allows to remove wait_for_devnode_appearance() hacks. lib: we keep stale paths in multipaths in case they get back online, but multipathd had trouble dealing with device name change in this situation : fixed. lib: support newer kernels sysfs layout (remove libsysfs dependency). checkers: handling CLARiiON I/O to inactive snapshot logical units. checkers: read buffer size bumped to 4096 bytes (Infiniband). checkers: add a timeout to SG_IO ioctls. kpartx: handling for extended partitions. kpartx: c-slice handling for BSD partition tables. kpartx: handling for SUN partition tables. lib: pick up existing alias (if any) from current dm config. checkers: EMC checker support for ALUA EMC arrays. Means no more checking loop blocking (while holding lock the cli tries to acquire for example). checkers: asynchronous checker framework. prio: add a prioritizer for HDS modular arrays. prio: add a prioritizer for HP storageworks arrays. Blacklist entries and other strings in the config file are true regular expressions, not shell expansion syntax. 
We support matching by SCSI revision now, in addition to Vendor and Product.Almost every vendor updated the internal defaults for their hardware ("show config" cli command is your friend).Add path group timeout handling (pg_timeout keyword).Move id callouts to standardized /lib/udev.pp_sgi renamed to pp_rdac : no behaviour change otherwise.Proliant owners should add it to your config file if you don't want surprises. seed cciss multipathing support for recent MSA hardware : warning, the cciss blacklist is not hardcoded anymore.allow arguments passing to prioritizers.so to avoid having to cache the callouts. leaks plugged (virtualiron, suse, redhat work).add "enablequeueing" and "disablequeueing" cli commands.add '-r' multipath arg to force maps reload.create read-only multipath if rw try failed.'show config' output usable as a config file replacement.support multipath-capable cciss hardware, add cciss_tur checker.fail/reinstate CLI commands disable/enable path checker.make kpartx deal with more than 256 minor numbers.add 'checker' keyword as alias to 'path_checker'.add 'fast_io_fail' and 'dev_loss_tmo' keywords.
deprecated prio_callout keyword: now use prio/prio_args.directio is now the default checker (async).Changes that may require your altering your config file :.tons of bugfixes and stability improvements.
#MAP IN USE MULTIPATH OFFLINE#
handle offline paths and quiesced rports. multipathd maintenance of important kernel tunable like oom_score_adj, dev_loss_tmo and fast_io_fail. kpartx support for non-512b blocksize disks. better udev integration (get device events and ids from udev). scsi3 persistent reservations on multipaths. 0.4.5+ changes are tracked through the git repository : here
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