Hello,
here goes multipath-tools-0.4.4
This release seems sane enough to enter enterprise distros, thanks to
all reviewers for their hard work.
Worth noting :
* 2 new path prioritizers : pp_alua and pp_emc
* devmap_name can now filter by target_type (-t flag).
For example, no output if not "multipath" type.
* the daemon sets /proc/self/oom_adj to -17, hence is
protected from the oom killer. Watch out for leaks.
* libdevmapper 1.01.01 or newer is now recquired
* blacklist synthax is now regex based. Update your config
files. The packaged templates are up to date.
* you can now set wwid in the blacklist
* multipathd gained a "-v" flag to tune verbosity
* daemon logging is now staged and asynchronous to avoid
syslogd possible hangs
* droped local klibc, libsysfs and libdevmapper
* multipath caches path info. Cache expire in 5sec.
* "multipath -l" accepts a devname or dev_t filter
Full ChangeLog for the release :
* [path_prio] clarify pp_alua licensing. Stefan Bader, IBM.
* [devmap_name] add a target_type filter (suggested by Hannes)
and set DM task device by major:minor rather than parsing
the full map list.
* [libmultipath] propagate an error on getprio callout
failures, so that multipath can mark the map as immutable.
Reported by Lars Marowsky-BrÃ, Suse.
* [libmultipath] move push_callout() from dict.c to config.c
Use it in store_hwe() to get in multipathd's ramfs the
callout defined in hwtable.c when no config file is used.
Reported by Lars Marowsky-BrÃ, Suse.
* [checkers] zero sense buffers before use in EMC checker.
Lars Marowsky-BrÃ, Suse.
* [all] pre-release bugfixing effort from Alasdair, Hannes,
Lars, Benjamin Marzinski
* [multipathd] set oom_adj to -17 when kernel permits.
Immune to OOM killer ? agk says : watch out for mem
leaks :/
* [multipathd] safety nets from udevd : exit early if
not root, chdir to / to avoid pining a mount.
* [multipathd] multipathd could loose events coming from
sighup or DM waitev. Add a pending_event counter to
track that.
* [path_prio] add pp_emc from Lars M Bree, Suse.
* [path_prio] add pp_alua from Stefan Bader, IBM.
* [libmultipath] add config.c:load_config(), which sucks
a big chunk of code out of multipath/main.c.
* [libmultipath] don't allocate memory in :
* devmapper.c:dm_get_map()
* devmapper.c:dm_get_status()
* [libmultipath] devinfo() a la carte fetching
* [libmultipath] merge keepalived memory audit framework
(Thanks again, M. Cassen). Already found and fixed a
couple of leaks.
* [libmultipath] flatten/optimize dm_map_present() and
dm_mapname(). Inspired by Alasdair Kergon, RedHat.
* [kpartx] dm_map_name() free before use bugfix. Kiyoshi
Ueda, NEC
* [kpartx] add hotplug mode. To enable name the binary
"kpartx.dev". Kiyoshi Ueda, NEC
* [multipathd] don't loose events in event waiter thread.
Suggested and prototyped by Edward Goggin, EMC
* [libmultipath] add return values to vector manipulation
fonctions. Mem alloc return code audit.
* [libmultipath] Use "config->udev_dir + path->dev" as
a path devnode to open instead of mknod'ing for each
one. Fix some DoS issues regarding usage of /tmp in
libmultipath/discovery.c:opennode(). Kill unlinknode()
* [multipathd] merged the redhat init script and stop
installing one on "make install"
* [libmultipath] fold safe_sprintf.h into util.h
* [libmultipath] move blacklist to a real regex matcher
Example config files updated : check yours !!
* [multipath] fix path group compare logic to not stop
comparing at first path in each PG.
* [multipathd] check if pidfile is a dead remnent of a
crashed daemon. If so, overwrite it. Suggested by
Alasdair Kergon, RedHat. Code heavily based on work
by Andrew Tridgell, Samba Fame.
* [build] dropped libdevmapper/ and libsysfs/ from the
package. klibc build is now broken until distributors
provide klibc compiled static libraries in their
respective packages.
* [libmultipath] dm_task_no_open_count() before each DM
ioctl. Not doing that is reported to cause deadlocks
in kernel-space. Reported by Edward Goggin, EMC, fix
suggested by Alasdair Kergon, RedHat
Note minimal libdevmapper version bumped up to 1.01.
* [multipath] switched to condlog(). "make DEBUG=N" is
deprecated. Debug is spat with "-v3" or more.
* [multipathd] "multipathd -vN" cmdline arg to control
daemon verbosity. 0 < N < 4. "make LOGLEVEL=N" is
deprecated.
* [libmultipath] provide a common condlog() primitive to
switch lib messages to syslog or stdout depending on
who uses the lib (daemon or tool).
* [kpartx] give kpartx a private, slim copy of devmap.[ch]
* [multipath] allow wwid in blacklist{} config section.
Kiyoshi Ueda, NEC.
* [multipathd] set mode value before use (S_IRWXU). Fixes
RedHat Bugzilla Bug 150665.
* [all] add ->fd to "struct path *". remove fd from all
checker context declaration. remove lots of duplicate
logic. Now a fd is opened only once for path. It should
also bring a bit safety in contended memory scenarii
* [libcheckers] remove redundant sg_include.h
* [libmultipath] merge multipath:dict.[ch] with
multipathd:dict.[ch] into libmultipath/. move config.h
there too, add some helper functions to alloc/free
"struct config *" in a new config.c. Start using a
config in the daemon.
* [libmultipath] move dm_geteventnr(), dm_get_maps() and
dm_switchgroup() in devmapper.[ch]
* [libmultipath] move path discovery logic in
libmultipath. merge devinfo.[ch] and sysfs_devinfo.[ch]
into discovery.[ch]
* [libmultipath] move config.h in libmultipath. Move
find_[mp|hw]e in a new config.c. Move "struct hwtable"
declaration in config.h. Move propsel.[ch] in the
lib too.
* [multipathd] use libmultipath:dm_type() instead of
duplacate and bogus devmap discovery code.
* [multipathd] asynchronous & non-blocking logger
thread. Implementation split into a generic log
lib and a pthread wrapper for locking and events.
An ipc wrapper could be easily created by
interested parties.
* [multipath] add "multipath -l -v2 [devname|devt]"
support in complement to [mapname|wwid]
* [kpartx] suppress loop.h private copy. Should fix
the reported build problems
* [multipath] do sysfs_get_mnt_path() only one time
and store in a global var.
* [multipath] further path discovery optimzation
* [multipath] purge superfluous includes in main.c
* [libmultipath] introduce a cache file. expiry set
to 5 secondes to covert the hotplug event storms.
* [multipath] split get_pathvec_sysfs(). Introduce
get_refwwid() and filter_pathvec()
As usual, doc and download at :
http://christophe.varoqui.free.fr/
Archive mirror at ftp://sources.redhat.com/pub/dm/multipath-tools/
regards,
--
christophe varoqui <christophe.varoqui@xxxxxxx>
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