RepoMirrors/ceph
1
0
Fork 0
mirror of https://github.com/ceph/ceph synced 2025-02-21 01:47:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

doc/release-notes: 9.1.0

Browse Source 
Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2015-10-13 08:24:11 -04:00
parent 7f80bfc3c0
commit 8e59595ffc
1 changed files with 59 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
doc/release-notes.rst
View File

@ -2,13 +2,70 @@
Release Notes
===============
v9.1.0
======
v9.1.0 Infernalis release candidate
===================================
This is the first Infernalis release candidate. There have been some
major changes since hammer, and the upgrade process is non-trivial.
Please read carefully.
Known issues
------------
* librbd and librados ABI compatibility is broken. Be careful
installing this RC on client machines (e.g., those running qemu).
* rgw: the get location API has a known bug
Major Changes from Hammer
-------------------------
* *General*:
* Ceph daemons are now managed via systemd (with the exception of
Ubuntu Trusty, which still uses upstart).
* Ceph daemons run as 'ceph' user instead root.
* On Red Hat distros, there is also an SELinux policy.
* *RADOS*:
* The RADOS cache tier can now proxy write operations to the base
tier, allowing writes to be handled without forcing migration of
an object into the cache.
* The SHEC erasure coding support is no longer flagged as
experimental. SHEC trades some additional storage space for faster
repair.
* There is now a unified queue (and thus prioritization) of client
IO, recovery, scrubbing, and snapshot trimming.
* There have been many improvements to low-level repair tooling
(ceph-objectstore-tool).
* The internal ObjectStore API has been significantly cleaned up in order
to faciliate new storage backends like NewStore.
* *RGW*:
* The Swift API now supports object expiration.
* There are many Swift API compatibility improvements.
* *RBD*:
* The ``rbd du`` command shows actual usage (quickly, when
object-map is enabled).
* The object-map feature has seen many stability improvements.
* Object-map and exclusive-lock features can be enabled or disabled
dynamically.
* You can now store user metadata and set persistent librbd options
associated with individual images.
* The new deep-flatten features allows flattening of a clone and all
of its snapshots. (Previously snapshots could not be flattened.)
* The export-diff command command is now faster (it uses aio). There is also
a new fast-diff feature.
* The --size argument can be specified with a suffix for units
(e.g., ``--size 64G``).
* There is a new ``rbd status`` command that, for now, shows who has
the image open/mapped.
* *CephFS*:
* You can now rename snapshots.
* There have been ongoing improvements around administration, diagnostics,
and the check and repair tools.
* The caching and revocation of client cache state due to unused
inodes has been dramatically improved.
* The ceph-fuse client behaves better on 32-bit hosts.
Distro compatibility
--------------------