1 / 6

Control System Status Time Meeting 12/1/09 John Morris

Control System Status Time Meeting 12/1/09 John Morris. Operations File Server NAS(Network Attached Storage) supports 6 file systems. cfse: logger data cfsf: other run data cfsb: op user areas cfsx: op software cfsy: general app config/storage, petTree archives, process archives

chase
Download Presentation

Control System Status Time Meeting 12/1/09 John Morris

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Control System Status Time Meeting 12/1/09 John Morris

  2. Operations File Server NAS(Network Attached Storage) supports 6 file systems • cfse: logger data • cfsf: other run data • cfsb: op user areas • cfsx: op software • cfsy: general app config/storage, petTree archives, process archives • cfsz: http docs, acc phys storage areas

  3. Operations File Server NAS(Network Attached Storage) containing 5 file subsystems • cfse: logger data • cfsf: other run data • cfsb: op user areas • cfsx: op software • cfsy: general app config/storage, petTree archives, process archives • cfsz: http docs, acc phys storage areas Thanksgiving Day 5pm: disk full 8pm: disk unavailable

  4. First Response • Work with NAS vendor (Hitachi) to recover cfsy file system • Devoted significant time to recovery effort since accelerators were off • Ultimately unsuccessful, so... • Export cfsy file system from our hot backup file server • Reboot key server machines and restart Controls servers

  5. Hot Backup Timing Hot backups of critical ops areas are made daily • 11/25 22:30 cfsy hot backup updated • 11/26 17:00 cfsy full Data saved to cfsy (general app_store, pet tree archives, process tree archives) between 11/25 22:30 and 11/26 17:00 is NOT present on cfsy now. Important question – how important is data saved during that time?

  6. Our goals now • Understand reason for the failure and for difficulty in recovery • Recover Thanksgiving Day data from cfsy • Get system into preferred configuration for operations There is a limit (2 days?) to how long we will delay #3.

More Related