Site has been  running well

Testing CVMFS 2.2.1

• Installed on all nodes
• So far no problems seen
• CVMFS 2.2.2 will be released soon (bug fixes for server, no client changes)

Disk pledge

• dCache
  • Found dark space in dCache (space not allocated to any token)
  • Found dark space on backing store pools (let dCache autosize pools)
  • Add two new servers with 260TB
  • Time sync problem on dCache head nodes prevented allocation of free space to tokens
  • Net of 750TB added to DATADISK
  • Brings MWT2 up to 2015 pledge of 3300TiB on DATADISK, GROUPDISK, USERDISK
• To meet our remaining 2016 pledge of 4500TiB attacking on three fronts
  • Bringing up S3 object store on Ceph system (can be 1200TiB on day one)
  • Add RDB block devices on Ceph to be used on dCache
    • Appears as a disk device which dCache uses as a pool
    • Can immediately add to all space tokens
    • Use all dCache doors (srm, webdav, xrootd)
    • Performance needs to be monitored
    • Future - dCache will directly support Ceph objects
  • Migrate all space tokens except DATADISK from dCache to Ceph
    • DATADISK will occupy all dCache space of 3654TiB
    • GROUPDISK (812TiB) and USERDISK (400TiB) will put us over pledge
  • As dCache RDB or space tokens migrate, S3 size can be reduced

dCache to Ceph migration

• The plan to migrate a space token from dCache to Ceph
  • Bestman SRM server (ceph-srm.mwt2.org:8443/srm/v2/server?SFN=)
  • gfal-sync to synhronize backing store copy of space token on dCache to a copy on Ceph
  • disable current spacetoken
  • final sync
  • enable space token with new SRM server
• Still need webdav and xrootd doors on Ceph