Current Disk Drive Usage: 2004 Sept 27

Current Disk Drive Usage: Status unknown

/data1 Brian Jacoby /data2 Barney Rickett, Ingrid Stairs /data3 Joe Lazio /data4 Ingrid Stairs, Andrea Possenti

/data1 ?? /data2 ?? /data3 ?? /data4 ??

/mnt/ehd2 Barney Rickett

/mnt/ehd2 ??

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Pulsar Data Transfer

The GBT Pulsar Spigot is a power device for wide bandwidth pulsar observations. The Spigot also generates large volumns of data that must be quickly tranfered to external disks, and removed from the computer. This page provides a summary of the currently mounted disk drives on the Spigot and the names of the current owners of these drives.

Current Disk Drive Usage: 2004 Sept 27

Current Large Internal Drives on Spigot 2
DRIVE       MAIN USERS
/data1      Brian Jacoby
/data2      Barney Rickett, Ingrid Stairs
/data3      Joe Lazio
/data4      Ingrid Stairs, Andrea Possenti

Current External Drives mounted on Spigot 2
DRIVE       MAIN USERS
/mnt/ehd2   Barney Rickett

Mounting

The Linux operating system requires the person mounting the external hard drives to have "root" priveledge. Some members of the NRAO staff have been assigned this priveledge and will perform the mount/dismount operations for remote observers.

Please contact one of the following for pulsar data mount requests:

    Wolfgang Baudler :  wbaudler -at- nrao.edu
    Chris Clark      :  cclark   -at- nrao.edu
    Scott Ransom     :  sransom  -at- nrao.edu

Future authorized contacts include: ...
    GBT Operators    :  gbtops   -at- nrao.edu  (304) 456-2341

Steps for mounting a firewire/usb drive

The process of mounting a disk first requires plugging the disk into the spigot2 computer, located in the GBT Equipment room, then figuring out the unix drive name. This is accomplished with the following steps:

• su
  • obtain root priveledges
• rescan-scsi-bus.sh
  • identify the drives currently attached to computer
• dmesg
  • print list of drive names (ie /dev/sdr1)
• mount -t ext3 /dev/sdr2 /mnt/ehd2
  • actually mount the drive
• umount /mnt/ehd2
  • unmount the drive

-- GlenLangston - 27 Sep 2004