## page was renamed from Computing/LIP_Lisbon_Farm/Data_Management
## page was renamed from Computing/LIP_Farm/Data_Management
<<TableOfContents()>>

= 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
se63:/user            /user                 LIP groups
}}}

== NFS Data directories ==

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

{{{
FILESYSTEM            MOUNTED ON            SCOPE
se34:/sno             /n/sno                SNO+ data
se51:/sno             /s/sno                SNO+ 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:

{{{
FILESYSTEM            MOUNTED ON            SCOPE
mdt02@tcp:/t3atlas    /gstore/t3atlas       ATLAS Tier-3
mdt02@tcp:/T3CMS      /gstore/t3cms         CMS Tier-3
mdt04@tcp:/auger      /lstore/auger         AUGER
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
mds22@tcp:/titan      /lstore/titan         ATLAS
mds-feno@tcp:/feno    /lstore/feno          Phenomenology
mds-share@tcp:/share  /share                Shared with Atlas, Auger, CMS, Compass, NUCRIA, SPAC and SWGO
}}}

== CVMFS Software provision ==

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

{{{
FILESYSTEM            MOUNTED ON            SCOPE
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

}}}