The Ceph Blog

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

  • October 29, 2014
    v0.87 Giant released

    This release will form the basis for the stable release Giant, v0.87.x. Highlights for Giant include: RADOS Performance: a range of improvements have been made in the OSD and client-side librados code that improve the throughput on flash backends and improve parallelism and scaling on fast machines. CephFS: we have fixed a raft of bugs …Read more

  • October 29, 2014
    Teuthology docker targets hack (1/3)

    teuthology runs jobs testing the Ceph integration on targets that can either be virtual machines or bare metal. The container hack adds support for docker containers as a replacement. … Running task exec… Executing custom commands… Running commands on role … Continue reading

  • October 29, 2014
    Remove Pool Without Name

    For exemple :

    # rados lspools
    data
    metadata
    rbd
    <—- ?????
    .eu.rgw.root
    .eu-west-1.domain.rgw
    .eu-west-1.rgw.root
    .eu-west-1.rgw.control
    .eu-west-1.rgw.gc
    .eu-west-1.rgw.buckets.index
    .eu-west-1.rgw.buckets
    .eu-west-1.l…

  • October 28, 2014
    Ceph Developer Summit 2014 – Hammer

    The Ceph Developer Summit (CDS) for the next major Ceph release called Hammer started today some hours ago (2014/10/28). It’s again a virtual summit via video conference calls.I’ve submitted three blueprints:Ceph Security hardening [pad]How t…

  • October 27, 2014
    Ceph: monitor store taking up a lot of space

    During some strange circonstances, the levelDB monitor store can start taking up a substancial amount of space.
    Let quickly see how we can workaround that.

    The result is basically overgrown SSTS file from levelDB.
    SST stands for Sorted String Tab…

  • October 26, 2014
    Interested in Ceph? Join us at the OpenStack summit in Paris!

    The next OpenStack summit is just around the corner and as usual Josh Durgin and I will lead the Ceph and OpenStack design session.
    This session is scheduled for November 3 from 11:40 to 13:10, find the description link here.
    The etherpad is already …

  • October 19, 2014
    Ceph make -j8 check in less than 3mn

    The Ceph sources contain tests that can be run with make check. As of v0.85 then can only be run sequentially because some tests bind the same ports and use the same files. It takes around 18 minutes on a … Continue reading

  • October 16, 2014
    Using git bisect with Ceph

    When investingating a a problem using the latest Ceph sources, it was discovered that the problem only shows in the master branch and appeared after the v0.85 tag. The following script reproduces the problem and logs the result: $ cat … Continue reading

  • October 16, 2014
    v0.80.7 Firefly released

    This release fixes a few critical issues with v0.80.6, particularly with clusters running mixed versions. We recommend that all v0.80.x Firefly users upgrade to this release. For more detailed information, see the complete changelog. NOTABLE CHANGES osd: fix invalid memory reference in log trimming (#9731 Samuel Just) osd: fix use-after-free in cache tiering code (#7588 Sage Weil) osd: …Read more

  • October 14, 2014
    Manual bootstrap of a Ceph MON on Ubuntu 14.04

    A Ceph MON can be created and run manually for test purposes on Ubuntu-14.04 with: $ sudo apt-get install ceph $ cat > /etc/ceph/ceph.conf <<EOF [global] fsid = $(uuidgen) mon_host = 127.0.0.1 auth_cluster_required = none auth_service_required = none auth_client_required = … Continue reading

  • October 14, 2014
    See you at the CephDay London 2!

    {% img center https://sebastien-han.fr/images/cephday.png See you at the CephDays in Paris %}

    This second edition of the CephDay London looks really promising.
    You should definitely look at the agenda! Talks go from OpenStack to deep performance studi…

  • October 11, 2014
    Manual bootstrap of a Ceph MON on RHEL7

    A Ceph MON can be created and run manually for test purposes on RHEL7 with: $ sudo yum install ceph $ cat > /etc/ceph/ceph.conf <<EOF [global] fsid = $(uuidgen) mon_host = 127.0.0.1 auth_cluster_required = none auth_service_required = none auth_client_required = … Continue reading

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