Low Level Storage in the ACM

The ACM stores all of our terabytes (excluding backups) the four Sun machines at the bottom of the cluster rack. This section discusses the workings of the software they run and the machines themselves. Each sunfire machine has 40 drives, of which two are root, one is an ssd for cache, and the other 37 are data.

• Ceph Storage System
  • Configuration
  • Authentication
    • Creating a New Ceph User
  • Maintenance Tasks
    • Getting Cluster Status
    • Identifying RBD Objects
    • Rebalancing Scrubs
    • What’s On An OSD
    • Slowly Easing In or Out OSDs
    • Quickly Removing an OSD
    • Creating a New Mon
    • Removing a Mon
  • ZFS and Ceph
  • Miscellany
• Setting up the Sunfires, a.k.a. thumpers
  • Using Serial Console on a Sunfire
  • Drive Enumeration Order
  • Booting from USB Mass Storage Devices
  • Installing a Sunfire, the Debian Way