File systems available

• The users have at there disposal three types of filesystem:

  • A common NFS filesystem for homes not shared with workernodes

  • A lustre filesystem for some groups shared filesystem with the workernodes

  • A CVMFS read-only filesystem for software provision

• Groups involved in WLCG transfer data using grid technologies can also use the Tier-3 storage areas and dedicated software areas (CVMFS) made available by there communities.

Access Policy

• By default both lustre and nfs individual group areas can be accessed (read only) by users of the same group.

Directories and filesystems

The pauli machines provide a wide set of filesystems so that users can access their data and applications.

NFS Home directories

Users home mounts are not shared with workernodes, they can be found only on submission nodes:

FILESYSTEM            MOUNTED ON            SCOPE
se16:/exports/advcmpt /home/advcmpt         Advance Computing
se16:/ams             /home/ams             Alpha Magnetic Spectromete
se16:/comp            /home/comp            COMPASS and AMBER
se16:/cosmo           /home/cosmo           AUGER
se16:/csys            /home/csys            CSYS
se16:/exports/dm      /home/dm              Dark Matter  
se16:/feno            /home/feno            Phenomenology
se16:/exports/lattes  /home/lattes          Gamma Observatory in the Southern Hemisphere
se16:/nucria          /home/nucria          Experimental Nuclear Astrophysics
se16:/pet             /home/pet             PET
se16:/exports/ship    /home/ship            Search for Hidden Particles
se16:/sno             /home/sno             Neutrino Physics
se16:/exports/spac    /home/spac            Social Physics and Complexity
se16:/t3atlas         /home/t3atlas         ATLAS experiment at CERN
se16:/t3cms           /home/t3cms           CMS experiment at CERN

NFS Data directories

Projects specific data NFS mounts are not shared with workernodes and are found only on submission nodes:

se17:/x               /x                         ATLAS data
se27:/ams             /z/ams                     AMS data
se27:/comp            /z/comp                    COMPASS data

LUSTRE Data directories

Projects specific data LUSTRE mounts are shared with workernodes:

mdt02@tcp:/t3atlas    /gstore/t3atlas            ATLAS Tier-3
mdt02@tcp:/T3CMS      /gstore/t3cms              CMS Tier-3
mdt04@tcp:/auger      /lstore/auger              AUGER
mdt10@tcp:/atlasloc   /lstore/atlas              ATLAS Coimbra
mdt04@tcp:/calo       /lstore/calo               ATLAS Lisboa
mdt02@tcp:/cmslocal   /lstore/cms                CMS
mdt03@tcp:/comp       /lstore/comp               COMP
mdt04@tcp:/lattes     /lstore/lattes             LATTES
mdt04@tcp:/nucria     /lstore/nucria             NUCRIA
mdt04@tcp:/pet        /lstore/pet                PET
mdt10@tcp:/sno        /lstore/sno                SNO PLUS

CVMFS Software provision

The CVMFS is a read-only filesystem with cache local to clients optimal for software provision:

cvmfs2                /cvmfs/cms.cern.ch         CMS VO
cvmfs2                /cvmfs/atlas.cern.ch       ATLAS VO
cvmfs2                /cvmfs/sw.el7              LIP

Important Disclaimer

• Manipulating huge sets of small files generates performance degradation issues in /lustre due to the lock management. Therefore, you should not

  • Compile anything under /lustre

  • Store and access databases under /lustre

Access your data by SSHFS

Install sshfs package

On Ubuntu/debian:

# sudo apt-get install sshfs

On RHEL/CentOS/Fedora:

# sudo yum install fuse-sshfs

Create a local directory

# mkdir ~/homeNCG

Mount your remote folder

# sshfs martinsj@fermi.ncg.ingrid.pt: ~/homeNCG

When you're done, you can unmount it

# fusermount -u ~/homeNCG

.bashrc tunning

In case you're dealing with very long paths, as a suggestion, you can add to your ~/.bashrc file the following:

alias mfermi='f(){ dir=$1 ; [ -n "$dir" ] || dir=homeNCG ; [ -d ~/$dir ] || mkdir -p ~/$dir ; sshfs fermi.ncg.ingrid.pt: ~/$dir ;  unset -f f; }; f'
alias ufermi='f(){ dir=$1 ; [ -n "$dir" ] || dir=homeNCG ; [ -d ~/$dir ] && fusermount -u ~/$dir ; [ -d ~/$dir ] && rmdir ~/$dir ;  unset -f f; }; f'

alias mncg='f(){ dir=$1 ; [ -n "$dir" ] && ldir=`basename $dir` ; [ -d ~/$ldir ] || mkdir -p ~/$ldir ; [ -n "$dir$ldir" ] && sshfs fermi.ncg.ingrid.pt:$dir ~/$ldir ;  unset -f f; }; f'
alias uncg='f(){ dir=$1 ; [ -n "$dir" ] && ldir=`basename $dir` ; ldir=`echo $ldir ; [ -d ~/$ldir ] && fusermount -u ~/$ldir ; [ -d ~/$ldir ] && rmdir ~/$ldir ;  unset -f f; }; f'

alias mcalo='f(){ [ -d lcalo ] || mkdir ~/lcalo ; sshfs fermi.ncg.ingrid.pt:/lstore/calo ~/lcalo ;  unset -f f; }; f'
alias ucalo='f(){ [ -d ~/lcalo ] && fusermount -u ~/lcalo ; [ -d ~/$ldir ] && rmdir ~/lcalo ;  unset -f f; }; f'

This is how you can use it:

$ mfermi homeNCG
$ df
Filesystem           1K-blocks    Used Available Use% Mounted on
fermi.ncg.ingrid.pt: 209612800 3504112 206108688   2%
/home/martinsj/homeNCG
$ ufermi homeNCG

$ mncg /lstore/calo
...
$ uncg /lstore/calo