Skip to main content

CADC VOSpace Filesystem

Project description

+++++++++++++++++++++++++ DOCUMENTATION ++++++++++++++++++++++++++

cadcVOFS is a set of python modules and scripts for access VOSpace.

The default installation of cadcVOFS is tuned for accessing the
VOSpace provided by the Canadian Astronomy Data Centre

VOSpace is a Distrbuted Cloud storage service for use in Astronomy.

There are three ways to use cadcVOFS:

1) access VOSpace from the command-line

2) make VOSpace appear as mounted filesystem

3) use the vos module inside a Python script

All of these methods require the user to have a pre-existing VOSpace
account with the CADC.

Authentication to the CADC VOSpace service is performed using security
certificates which are managed by the CADC Group Management Service
(GMS). The certificates can be retrieved from the CADC using the
'getCert' script and users CADC account and password information.



+++++++++++++++++++++++ REQUIREMENTS +++++++++++++++++++++++++++++++

A CADC VOSpace account
fuse OR OS-FUSE (see additional documentation)
python2.6 or newer

+++++++++++++++++++++++++ INSTALLATION +++++++++++++++++++++++++++

python install

+++++++++++++++++++++++++ USAGE ++++++++++++++++++++++++++++++++++

1) Get a CADC account <>

2) Retrieve a SSL certificate from the CADC servers.

> getCert

retrieves a certificate from the CADC servers, these certifcates are
valid for 2 days (be default) but can be valid for upto 30 days (see
the getCert help). The cerificate is stored in ${HOME}/.ssl by

3a) For filesystem usage:

> mountvofs

mounts the CADC VOSpace root Container Node at /tmp/vospace and
initiates a 5GB cache in the users home directory (${HOME}/vos_)

**** Since the VOSpace does not have a mapping of your unix users
IDs all files appear to be owned by the user who issued the
'mountvofs' command. Only that user can see the mount point.

3b) Commandline usage:

> vls -l vos:

Lists the contents of the CADC root VOSpace Container Node.

> vcp vos:jkavelaars/test.txt ./

copys the files 'test.txt' from the the vospace container jkavelaars
to your local directory.

See --help for the commands: vmkdir, vrm, vrmdir, vsync

Project details

Release history Release notifications

This version
History Node


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
vos-1.5.6.tar.gz (45.4 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page