The common folder of the Core filesystem (/asap3/<facility|research group>/gpfs/common) is accessible via several protocols.

If you want to mount the common folder on the beamline for read-only access, follow this guide.

For modifying content in the common folder, please see Data Access: Core FS. Common can only be modified by accessing the Core filesystem directly.

Access Methods

SMB - For Windows and macOS users

For Windows and macOS users, the common folder can be mounted via an SMB share.

Each individual facility or research group has its own share:

FacilityPath on GPFSSMB Share Name

PETRA III

/asap3/petra3/gpfs/common

\\asap3.desy.de\petra3-common

FLASH

/asap3/flash/gpfs/common\\asap3.desy.de\flash-common
Special Instruments/asap3/spec.instruments/gpfs/common\\asap3.desy.de\spec.instruments-common
Research Group
FS-FLASH-O/asap3/fs-flash-o/gpfs/common\\asap3.desy.de\fs-flash-o-common
FS-DS-AGIPD/asap3/fs-ds-agipd/gpfs/common\\asap3.desy.de\fs-ds-agipd-common
FS-DS-Percival/asap3/fs-ds-percival/gpfs/common\\asap3.desy.de\fs-ds-percival-common

For a pictured manual to map network drives, please refer to Data Access: Core FS. The steps are the same, just different share names have to be used for common.

Windows 7 EOL

Windows 7 will reach end of life on 2020-01-14, no security updates will be available after that point in time.
Access via SMB from Windows 7 hosts is therefore no longer supported.

NFSv4 - For Linux users

For Linux users on the beamline, common folder can be mounted read-only via NFSv4 without kerberos.

FacilityPath on GPFSNFS Export

PETRA III

/asap3/petra3/gpfs/common

asap3.desy.de:/common/petra3

FLASH

/asap3/flash/gpfs/commonasap3.desy.de:/common/flash
Special Instruments/asap3/spec.instruments/gpfs/commonasap3.desy.de:/common/spec.instruments
Research Group
FS-FLASH-O/asap3/fs-flash-o/gpfs/commonasap3.desy.de:/common/fs-flash-o
FS-DS-AGIPD/asap3/fs-ds-agipd/gpfs/commonasap3.desy.de:/common/fs-ds-agipd
FS-DS-Percival/asap3/fs-ds-percival/gpfs/commonasap3.desy.de:/common/fs-ds-percival

Restricted Mount Access

Access to the NFSv4 exports are restricted by IP subnet.

For PETRA III, the following subnets are allowed to mount the read-only common folder filesystem without kerberos:

 Click to show subnet list
  • 131.169.38.0/24
  • 131.169.39.0/24
  • 131.169.45.0/24
  • 131.169.66.0/24
  • 131.169.221.0/24
  • 131.169.225.0/24
  • 131.169.232.0/24
  • 131.169.33.0/24
  • 192.168.138.0/24
  • 131.169.65.0/24
  • 192.168.132.0/22
  • 192.168.37.0/24
  • 192.168.56.0/22

Mounting via NFSv4 without Kerberos

Mounting the common folder requires root privileges. On Linux installations at the beamline, common is usually already mounted.
Please contact FS-EC (fs-ec@desy.de) in case of problems.

mount without krb5

mount -o ro,nfsvers=4.0,sec=sys,hard <NFS Export> <local mountpoint>

Example

mount -o ro,nfsvers=4.0,sec=sys,hard asap3.desy.de:/common/flash /common

Additional configuration is required on the client machine, the setup for this is out of scope for this documentation.

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