Release 2015_055 (2015-12-17)

Configuration

  • Use control groups on storage servers to prevent starvation (#18803).

  • Improve I/O scheduler settings for RAID filesystems (#18803).

  • Speed up Ceph OSD daemon startup by pre-reading files into the virtual file system cache (#18803).

  • Improve consistency of Ceph MON filesystem backups (#18803).

Monitoring

  • Directory/Nagios synchronization check (#19421, #19425).