diff options
author | Vijay Bellur <vbellur@redhat.com> | 2013-07-15 16:49:41 +0530 |
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committer | Vijay Bellur <vbellur@redhat.com> | 2013-07-15 06:36:15 -0700 |
commit | c25908538bd9d0c8b01d73f11f502829506a93e0 (patch) | |
tree | 4c6b564e43fdf3155c66eb53e24d8d932273b0e1 /doc | |
parent | b92b98ef9a2d912273aeb29a82ffd25831a8eec3 (diff) |
doc: release-notes for 3.4.0
Change-Id: I8245e35198b9c5990fa70dea2b2b03e1c227e411
BUG: 825906
Reviewed-on: http://review.gluster.org/5329
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/release-notes/3.4.0.md | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/doc/release-notes/3.4.0.md b/doc/release-notes/3.4.0.md new file mode 100644 index 00000000000..995a947417c --- /dev/null +++ b/doc/release-notes/3.4.0.md @@ -0,0 +1,161 @@ +## Major Changes and Features + +### Dual Licensing + +All of GlusterFS 3.4.0 is available under this dual License: + +- GNU Lesser General Public License, version 3 or any later version (LGPLv3 or + later), + + or + +- GNU General Public License, version 2 (GPLv2) + + +### libgfapi + + +libgfapi provides API access to data that is stored in gluster volumes. +Description of the API can be found [here] +(https://forge.gluster.org/glusterfs-core/glusterfs/blobs/release-3.4/api/src/glfs.h). + +qemu and samba are already integrated with libgfapi. You can now access gluster +volumes directly from qemu and samba without having to come through a +regular filesystem mount point. + +### Quorum enforcement from Trusted Storage Pool + +Quorum can now be enforced from the Trusted Storage Pool. Connectivity +information present in glusterd is used to determine quorum. Server Side quorum + can be enabled by: + +*\#gluster volume set <volname\> cluster.server-quorum-type server* + +*\#gluster volume set <volname\> cluster.server-quorum-ratio <percentage\>* + +More details about this feature can be found [here] +(http://www.gluster.org/community/documentation/index.php/Features/Server-quorum). + + +### Improvements for Virtual Machine Image Storage + +A number of improvements have been performed to let Gluster volumes provide +storage for Virtual Machine Images. Some of them include: + +- qemu - libgfapi integration. +- Causal ordering in write-behind translator. +- Tunables for a gluster volume in group-virt.example. + +The above result in significant improvements in performance for VM hosting. + + +### Synchronous Replication Improvements + +GlusterFS 3.4 features significant improvements in performance for the +replication (AFR) translator. This is in addition to bug fixes for volumes that +used replica 3. + + +### Open Cluster Framework compliant Resource Agents + +Resource Agents (RA) plug glusterd into Open Cluster Framework +(OCF) compliant cluster resource managers, like Pacemaker. + +The glusterd RA manages the glusterd daemon like any upstart or systemd job +would, except that Pacemaker can do it in a cluster-aware fashion. + +The volume RA starts a volume and monitors individual brick daemons in a +cluster aware fashion, recovering bricks when their processes fail. + + +### POSIX ACL support over NFSv3 + +setfacl and getfacl commands now can be used on a nfs mount that exports a +gluster volume to set or read posix ACLs. + +### 3.3.x compatibility + +The new op-version infrastructure provides compatibility with 3.3.x release of +GlusterFS. 3.3.x clients can talk to 3.4.x servers and the vice-versa is also +possible. + +If a volume option that corresponds to 3.4 is enabled, then 3.3 clients cannot +mount the volume. + +### Packaging changes + +New RPMs for libgfapi and OCF RA are present with 3.4.0. + +### Brick port changes + +Brick ports will now listen from 49152 onwards (instead of 24009 onwards as with +previous releases). The brick port assignment scheme is now compliant with IANA +guidelines. + +### Experimental Features + +The following features are experimental with this release: + +- RDMA-connection manager (RDMA-CM). +- Block Device translator. +- support for NUFA translator. + +## Minor Improvements: + +- The Ext4 file system change which affected readdir workloads for Gluster + volumes has been addressed. + +- More options for selecting read-child with afr available now. + +- Custom layouts possible with distribute translator. + +- No 32-aux-gid limit + +- SSL support for socket connections. + +- Known issues with replica count greater than 2 addressed. + +- quick-read and md-cache translators have been refactored. + +- open-behind translator introduced. + +- Ability to avoid glusterfs bind to reserved ports. + +- statedumps are now created in /var/run/gluster instead of /tmp by default. + +- UFO Rebased to Openstack Swift 1.8.0 (Grizzly). + +Note that UFO will be renamed G4S (Gluster For Swift) and decoupled from +GlusterFS in the next release. The UFO source in the GlusterFS ufo subdirectory +is deprecated following this release. +The G4S source is now in the separate git repository [here] +(ssh://git.gluster.com/gluster-swift.git). + +- glusterfs.spec.in mirrors the Fedora glusterfs.spec (delta UFO packages until + G4S packages land in Fedora.) + +- Gluster NFS server now listens by default on port 2049. This allows auto + negotiation with NFS clients. + + +### Known Issues: + +- The following configuration changes are necessary for qemu and samba + integration with libgfapi to work seamlessly: + + 1) gluster volume set <volname> server.allow-insecure on + + 2) Edit /etc/glusterfs/glusterd.vol to contain this line: + option rpc-auth-allow-insecure on + + Post 2), restarting glusterd would be necessary. + +- RDMA connection manager needs IPoIB for connection establishment. More + details can be found [here] +(https://github.com/gluster/glusterfs/blob/master/doc/rdma-cm-in-3.4.0.txt). + +- When NUFA is enabled, client mounts fail outside the trusted storage pool. + +- Quota enforcement does not work correct with NFS access. + +- replace-brick operation does not work fine in all cases in this release. |