1. Emil Knezo PPARC-LCG-Fellow CERN IT-DS-HSM August 2002
CASTOR and GridFTP
Emil Knezo
PPARC-LCG-Fellow
CERN IT-DS-HSM
August 2002

2. CASTOR & GridFTP / Emil Knezo
Agenda
Current CASTOR connection to the outside world
GridFTP status/plans
GSI-CASTOR code integration status
August 2002
CASTOR & GridFTP / Emil Knezo

3. CASTOR & GridFTP / Emil Knezo
CASTOR layout
TMS
VDQM
server
VDQM
server
NAME
server
RFIO
Client
NAME
server
STAGER
RTCPD
TPDAEMON
(PVR)
RTCPD
(TAPE
MOVER)
RFIOD
(DISK
MOVER)
MSGD
VOLUME
manager
DISK POOL
August 2002
CASTOR & GridFTP / Emil Knezo

4. CASTOR and outside world
Current CASTOR connection to the outside world:
ftp
bbftp
sftp (from mid. September)
CERN
CASTOR
WACDR
(disk-server)
- wuftpd; bbftpd; (sftp-server)
2.5Gbit/s DataTAG link
1Gbit/s
ftp, bbftp, (sftp)
rfio
August 2002
CASTOR & GridFTP / Emil Knezo

5. CASTOR & GridFTP / Emil Knezo
GridFTP plans
GridFTP access to CASTOR via “wacdr”
GSI authentication in wacdr
Make GT2GridFTP server CASTOR-compliant
GT2GridFTP core is wuftpd (CASTOR-compliant)
Not clear yet if all GridFTP extensions to vanilla FTP will be supported
Delivery time -- mid-October
August 2002
CASTOR & GridFTP / Emil Knezo

6. Restrictions & known problems
Users without CERN-account can access CASTOR only via pool-accounts.
No CASTOR-to-CASTOR copy via GridFTP
Problems:
Connection timeout for not-staged file
Staging time can reach up to 2hrs.
No instrumentation in GridFTP/Ftp protocol to prevent this timeout
August 2002
CASTOR & GridFTP / Emil Knezo

7. CASTOR & GridFTP / Emil Knezo
GSI-CASTOR code
GSI-CASTOR version-2 (April 2002)
Not tested with CASTOR yet and therefore not in production
Based on CASTOR
meanwhile -- changes in CASTOR
To do:
Make it CASTOR-1.5 compliant
Test & put into production
Not before Christmas
August 2002
CASTOR & GridFTP / Emil Knezo