From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Philipp Reisner To: drbd-announce@lists.linbit.com Date: Mon, 9 May 2011 18:24:09 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201105091824.10153.philipp.reisner@linbit.com> Cc: drbd-user@lists.linbit.com Subject: [DRBD-announce] drbd-8.4.0rc1.tar.gz Reply-To: drbd-user@lists.linbit.com List-Id: Announcements of new releases and critical bugs found List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi, A new major release of DRBD is going into feature freeze mode! The most noticeable change is the support for multiple replicated volumes in a single DRBD connection. Write-ordering is obeyed among all writes in all volumes in a single connection. This feature is really important for users who DRBD for mirroring over longer distances. (Protocol A). Please see the changelog for all the other cherries ;) So far it is intended to build on debian-squeeze, ubuntu-lucid, RHEL6, SLES11 and SLES11SP1. (Basically kernel 2.6.27 or newer.) Support for older distributions will follow with future release candidates. Please note: This is a release candidate, not intended for production. Please help with testing! 8.4.0rc1 (api:genl1/proto:86-100) -------- * Fixed handling of read errors during online verify * Go into inconsistent disk state with on-io-error=pass-on policy * Timeouts for requests processing on the peer (previously that worked only if the data socket was congested) * Reworked Linux backward compatibility mechanism * Conflicting write detection is now based on an interval tree, removed the hash-tables (necessary for the unlimited BIO sizes) * Removed the tracing framework * Support for multiple volumes (minors, block devices) per connection; up to 65536 volumes per connection supported * Reduced IO latencies during some state changes (esp. start resync) * New on disk format for the AL: double capacity; 4k aligned IO; same space * Multiple AL changes in a single transaction (precondition for unlimited BIO sizes) * DRBD no longer imposes any limit on BIO sizes * Removed DRBD's limits on the number of minor devices * DRBD's minors can now be removed (not only unconfigured) * Switched the user space interface form connector to generic netlink * drbdadm, configuration changes: volume sections; syncer section removed; bool options got yes/no values, that improves option inheritance; resource options * drbdsetup: new commands for creating and removing connections and minors * drbdsetup: new commands for changing disk options while the disk is attached; ...for changing net options while the connection is established * drbdsetup/drbdadm the wire-protocol is now a regular connection option * IO freezing/thawing is done on connection (all volumes) level * fencing is done on connection (all volumes) level http://oss.linbit.com/drbd/8.4/drbd-8.4.0rc1.tar.gz http://git.drbd.org/?p=drbd-8.4.git;a=tag;h=drbd-8.4.0rc1 Best, Phil -- : Dipl-Ing Philipp Reisner : LINBIT | Your Way to High Availability : Tel: +43-1-8178292-50, Fax: +43-1-8178292-82 : http://www.linbit.com DRBD(R) and LINBIT(R) are registered trademarks of LINBIT, Austria.