The Ceph Blog

Ceph blog stories provide high-level spotlights on our customers all over the world

  • September 12, 2013
    Distributed storage and thinking inside the box

    I usually try to ignore all of the silly things that people say on the internet, but every once in a while there is something from a reputable source that is sufficiently misleading that I feel obliged to respond.  Cloudscaling CEO Randy Bias’s whitepaper Converged Storage, Wishful Thinking & Reality is an example of the […]

  • September 10, 2013
    Monitors and Paxos, a chat with Joao

    This is a dialog where Joao Luis, Ceph core developer with an intimate knowledge of the monitor, answers Loïc Dachary’s questions who discovers this area of the Ceph code base. Many answers are covered in Joao’s article Ceph’s New Monitor Changes (March 2013), with a different angle. Loic: My line of questions will be from […]

  • September 10, 2013
    v0.67.3 Dumpling released

    This point release fixes a few important performance regressions with the OSD (both with CPU and disk utilization), as well as several other important but less common problems. We recommend that all production users upgrade. Notable changes since v0.67.2 include: ceph-disk: partprobe after creation journal partition ceph-disk: specify fs type when mounting ceph-post-file: new utility […]

  • September 4, 2013
    Diffusing the Ink – September

    If you have ventured out under the bright lights of a convention hall in recent months there is a good chance you have had a close encounter with one of the Inktankians spreading the Ceph gospel. From OSCON to a Ceph Day in NYC and Dreamcon to the largest Boston OpenStack meetup to date, we […]

  • September 4, 2013
    v0.68 released

    Our first development release after Dumpling has arrived!  It includes a lot of small cleanups and documentation improvements, as well as the first blueprint from the Emperor CDS to land (support for ZFS).  There are also new sample implementations for RADOS classes (cls_hello) and a sample librados application (hello_world) to help developers and users get […]

  • August 29, 2013
    Clustering the office

    Ceph community member Loic Dachary posted a fun entry this week about using the hardware you already have in the office, your desktops, to make a cluster. Turns out it’s a pretty easy setup, and it can handle if random machines disappear for reboots. Take a look. July 1st 2013, Heinlein set up a Ceph […]

  • August 28, 2013
    v0.56.7 Bobtail released

    We have another bugfix update for bobtail. Most of these fixes have been sitting in the bobtail branch (and were run by various users) for some time now. The newest patches fix a problem with multi-delete on rgw. We recommend that production bobtail clusters upgrade, especially if they are using the radosgw. Notable changes: ceph-fuse: create finisher flags after […]

  • August 23, 2013
    v0.67.2 Dumpling released

    This is an imporant point release for Dumpling. Most notably, it fixes a problem when upgrading directly from v0.56.x Bobtail to v0.67.x Dumpling (without stopping at v0.61.x Cuttlefish along the way). It also fixes a problem with the CLI parsing of the CEPH_ARGS environment variable (which causes problems with older releases of OpenStack), high CPU […]

  • August 19, 2013
    v0.61.8 Cuttlefish released

    We’ve made another point release for Cuttlefish.  This release contains a number of fixes that are generally not individually critical, but do trip up users from time to time, are non-intrusive, and have held up under testing. Notable changes include: librados: fix async aio completion wakeup librados: fix aio completion locking librados: fix rare deadlock […]

  • August 17, 2013
    v0.67.1 Dumpling released

    This is a bug fix release for Dumpling that resolves a problem with the librbd python bindings (triggered by OpenStack) and a hang in librbd when caching is disabled. Notable changes: librados, librbd: fix constructor for python bindings with certain usages (in particular, that used by OpenStack) librados, librbd: fix aio_flush wakeup when cache is […]

  • August 14, 2013
    v0.67 Dumpling released

    Another three months have gone by, and the next stable release of Ceph is ready: Dumpling!  Thank you to everyone who has contributed to this release (42 authors in all)! This release focuses on a few major themes since v0.61 Cuttlefish: rgw: global namespace and region support for S3/Swift object storage new RESTful API endpoint […]

  • July 25, 2013
    v0.61.7 Cuttlefish update released

    This release fixes another regression preventing monitors to start after undergoing certain upgrade sequences, as well as some corner cases with Paxos and unusual device names in ceph-disk/cephde-loy. Notable changes: mon: fix regression in latest full osdmap retrieval mon: fix a long-standing bug with a paxos corner case ceph-disk: improved support for unusual device names […]