(RHSA-2015:1845) Moderate: Red Hat Gluster Storage 3.1 update

Red Hat Gluster Storage is a software only scale-out storage solution that
provides flexible and affordable unstructured data storage. It unifies data
storage and infrastructure, increases performance, and improves
availability and manageability to meet enterprise-level storage challenges.

Red Hat Gluster Storage’s Unified File and Object Storage is built on
OpenStack’s Object Storage (swift).

A flaw was found in the metadata constraints in Red Hat Gluster Storage’s
OpenStack Object Storage (swiftonfile). By adding metadata in several
separate calls, a malicious user could bypass the max_meta_count
constraint, and store more metadata than allowed by the configuration.
(CVE-2014-8177)

This update also fixes numerous bugs and adds various enhancements. Space
precludes documenting all of these changes in this advisory. Users are
directed to the Red Hat Gluster Storage 3.1 Technical Notes, linked to in
the References section, for information on the most significant of these
changes.

This advisory introduces the following new features:

• Gdeploy is a tool which automates the process of creating, formatting,
  and mounting bricks. When setting up a fresh cluster, gdeploy could be the
  preferred choice of cluster set up, as manually executing numerous commands
  can be error prone. The advantages of using gdeploy includes automated
  brick creation, flexibility in choosing the drives to configure (sd, vd,
  etc.), and flexibility in naming the logical volumes (LV) and volume groups
  (VG). (BZ#1248899)

• The gstatus command is now fully supported. The gstatus command provides
  an easy-to-use, high-level view of the health of a trusted storage pool
  with a single command. It gathers information about the health of a Red Hat
  Gluster Storage trusted storage pool for distributed, replicated,
  distributed-replicated, dispersed, and distributed-dispersed volumes.
  (BZ#1250453)

• You can now recover a bad file detected by BitRot from a replicated
  volume. The information about the bad file will be logged in the scrubber
  log file located at /var/log/glusterfs/scrub.log. (BZ#1238171)

• Two tailored tuned profiles are introduced to improve the performance for
  specific Red Hat Gluster Storage workloads. They are: rhgs-sequential-io,
  which improves performance of large files with sequential I/O workloads,
  and rhgs-random-io, which improves performance of small files with random
  I/O workloads (BZ# 1251360)

All users of Red Hat Gluster Storage are advised to apply this update.