wiki:manuals/SpaceReservationDetails
Last modified 13 years ago Last modified on 05/26/08 10:44:28

Space Reservation in Detail

More details.

Overview

When does Explicit Space Reservation happen ?

  • SRM 2.2 transfers, specifying a space token.
  • SRM 2.2 transfers, where the destination directory holds a Token Tag.
  • SRM 1.1 transfers, where the destination directory holds a Token Tag.

Implicit Space Reservation if (srmImplicitSpaceManagerEnabled=yes)

  • SRM 1.1 & 2.2 Access Latency and Retention Policy taken from
    • Commmand Line
    • Directory Tag
    • Global Defaults in config/dCacheSetup file.

Implicit Space Reservation if (SpaceManagerReserveSpaceForNonSRMTransfers=true)

  • gsiFtp Access Latency and Retention Policy taken from
    • Directory Tag
    • Global Defaults in config/dCacheSetup file.

NO Space Reservation

  • (gsi)dCap, xroot

Details

Implicit/Explicit? Space Reservation for SRM transfers

 Implicit Space Reservation
 OFFON
SRM 2.2 
Token in SRM command uses specified token
AL/RP in SRM command Uses a Link, not member of any Link Group Uses LG, matching AL/RP for implicit reservation
SRM 1.1 & 2.2 
Token as a tag in destination directory Uses this token for Explicit Reservation
AL/RP as tags in destination directory Uses a Link, not member of any Link Group Uses LG matching specified AL/RP for Implicit Reservation
Nothing specified, no directory tags Uses a Link, not member of any Link Group Uses LG matching specified AL/RP in dCacheSetup for Implicit Reservation

Implicit/Explicit? Space Reservation for NON SRM transfers

 Implicit Space Reservation For Non SRM Transfers
 OFFON
gsiFtp 
Token as a tag in destination directory Uses this token for Explicit Reservation
AL/RP as tags in destination directory Uses a Link, not member of any Link Group Uses LG matching specified AL/RP for Implicit Reservation
Nothing specified, no directory tags Uses a Link, not member of any Link Group Uses LG matching specified AL/RP in dCacheSetup for Implicit Reservation
dCap, gsiDcap, xRoot 
Token as a tag in destination directory Uses this token for Explicit Reservation
Unconditional Uses a Link, not member of any Link Group

Last modified by patrick @ Sat Feb 27 01:46:13 2021