Recommended update for multipath-tools

Knowledgebase

(Last modified: 05DEC2005)

solutions Recommended update for multipath-tools SuSE Linux Maintenance Web (35ad18e615b6b56f08e115094e1c1c02)

Applies to

Package: multipath-tools
Product(s): SUSE CORE 9 for x86
SUSE CORE 9 for Itanium Processor Family
SUSE CORE 9 for IBM POWER
SUSE CORE 9 for IBM S/390 31bit
SUSE CORE 9 for IBM zSeries 64bit
SUSE CORE 9 for AMD64 and Intel EM64T
Open Enterprise Server
Novell Linux Desktop 9 for x86
Novell Linux Desktop 9 for x86_64
Patch: patch-10641
Release: 20051205
Obsoletes: none

Indications

All users of multipath-tools should update.

Contraindications

None.

Problem description

This update provides consolidates new features and bugfixes:

proactive path group re-enable, as soon as one path goes up
a Command Line Interface to drive and inspect the daemon
remove the multipath(8) cache file logic in favour of a multipathd<->multipath unix socket request/reply design
split multipath(8) listing option into
- short-list (-l): don't fetch wwid, path checker status, priorities, which is fast
- detailed-list (-ll): refetch all info
the daemon asynchronous logger is now solid and avoids sending empty critical messages
daemon CLI command to reload the config file
path checking interval gets longer when the path is reliably up, resets to short as soon as a problem occur
daemon implements 3 path group failback methods:
- manual
- immediate: failback as soon as an (enabled && !active) PG gets the highest priority
- defered: failback to the highest priority (enabled && !active) PG n seconds after the last PG priority order change
remove over-complicated and thread-confusing daemon initial clone() w/ private namespace
prioritizers official prefix is now mpath_prio_
multipath(8) displays PG priorities when available
new hp_sw checker. It's a tri-state UP/DOWN/GHOST
new directio checker. Useful with DASD devices.
stricter default blacklist regexps
new '-f' multipath(8) flag to selectively suppress a multipath map, and its device-mapped partitions
alua prioritizer update, should work on x86
support for >2TB multipaths
claimed device detection: no more warning/error messages with paths pinned by mounted FS
option to use priorities as weights in the round-robin scheduler: for people who can't wait for a qlen-based scheduler

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:


rpm -Fvh multipath-tools.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.

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