Disk Write Privileges

To obtain disk space allocations on the D0 Unix machines you need to go through a few steps.
Note, this page isn't relevant for ClueD0.

1. To find out what disks are available and their assignments:
   • Login to a machine at Fermilab, or start a Fermilab VPN session. You need an FNAL.GOV domain address because the URL below is blocked from offsite.
   • Start a web browser
   • check: http://d0srv096.fnal.gov/d0_project_disks/
   • find a disk owned by your group, note the number following "/projects/" = <number>.
   • note the "owner" = <group-name>.
     BUT: the group owner is usually xxx_write. The listing often omits the "_write" part. To make sure of the real owner
     • on a ClueD0 or d0mino0* machine:
       ls -ld /prj_root/<number>
     • note the group name = <group-name>. The name is sometimes truncated if it's too long. So beware.
2. To determine if you already hold the group id:
   • login to d0me.fnal.gov
   • setup systools (if you have problems, see:
     http://www-d0.fnal.gov/cgi-bin/d0news?read__COMPUTING-SOFTWARE__472)
   • ypcat group | grep <group-name>
     If you are listed, you are done. Go ahead and create a directory using the your group's conventions. You should also check:
     http://www-d0.fnal.gov/d0disks/disk-management.html
     for instructions on keeping ownerships and permissions correct.
3. If you are not listed then, determine the group id manager by
   • cmd gldr <group-name>
4. ask one of the people listed to add you to the group list.

5. To obtain additional space for an existing project, create a new project, etc. contact
   Erich Varnes and/or Qizhong Li.

15 April 1999
rev. 9 May 2001
rev. 28 April 2004
rev. 4 Sept 2008

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Last modified: September 12, 2008 10:19:09 AM CDT