Query and Retrieve old gstore data

Data archives on tape written via Gstore can be retrieved via TSM commands, now wrapped in the scripts qgstore.sh and rgstore.sh.

Permissions

• Both scripts have to run under sudo
  • This means you have to be entered into the sudoers database by an admin!

Where does it work?

Due to the implementation of user/group ids and access rights in the original Gstore software, retrieval of these data does not work on NFS shares.

• You cannot do it in your normal /u - home directory
• You cannot do it directly from outside GSI.

Therefore, the scripts have been placed on the lustre.hpc.gsi.de nodes, where retrieval can be done onto Lustre.

Query

• Check out GsTore
• or run

$ ssh lustre.hpc.gsi.de
$ sudo /usr/local/bin/qgstore.sh /my-archive/

/my-archive/ could be something like /fopi/ or /cbm/ etc.

Retrieve

Go to lustre.hpc.gsi.de and create your target directory:

ssh lustre.hpc.gsi.de
$ cd /lustre/group/…
$ mkdir mytapedir

Run rgstore specifying that target directory with a trailing slash:

$ sudo /usr/local/bin/rgstore.sh /gstore_filespec mytapedir/

Example:

scientist@lustre.hpc:/lustre/fopi/scientist$ sudo /usr/local/bin/rgstore.sh /fopi/dstx/iqmd.geant.auau1000.zhm01.*   mytapedir/

scientist@lustre.hpc:/lustre/fopi/scientist$ ls -l mytapedir
total 4
drwxr-sr-x 2 scientist fopi 4096 Mar  5 10:08 dstx

scientist@lustre.hpx:/lustre/fopi/scientist$ ls -l mytapedir/dstx
total 787530
-rw-r--r-- 1 scientist fopi 395514000 Mar  5 10:08 iqmd.geant.auau1000.zhm01.v1
-rw-r--r-- 1 scientist fopi 411264000 Mar  5 10:08 iqmd.geant.auau1000.zhm01.v2
[…]

-- ThomasRoth, Christo - 2018-2020