[GRASSLIST:7121] Re: GRASS 6 problem

Glynn Clements glynn at gclements.plus.com
Sat Jun 11 00:11:28 EDT 2005

Thomas Adams wrote:

> We recently had a disk failure, fortunately our GRASS database data was 
> backed up. We are now pointed to the backup until things are restored. 
> The problem is, in GRASS 6 that when the dialog comes up to select a 
> location and mapset, the locations are selectable but no mapsets are 
> listed ... they are there. Since the files are on a different machine, 
> is this a Linux group permissions issue that prevent the mapset from 
> being listed in the dialog? How do I get around this without creating 
> new mapsets?

Alexandra Miller wrote:

> We've just encountered the same problem while attempting to install Grass,
> on a PC, in a multi-user format.  We have yet to figure out exactly how to
> fix it, but the problem seems to be related to permissions to write to the
> location (however just changing permission settings is not working) when
> multiple users attempt to use Grass.  It seems especially strange that we
> can create new mapsets within locations (and set the search path to the
> originals), but not enter any created mapsets.  If anyone has this figured
> out, we'd love to know.

In both cases, it sounds as if your mapset directories have incorrect
ownership information.

You can only select a mapset as the current mapset (where any new maps
will be created) if you own the mapset directory; having write
permission isn't sufficient.

OTOH, you can read maps from other mapsets so long as you have the
necessary permissions, i.e. read permission on files, read and execute
permission on directories.

Glynn Clements <glynn at gclements.plus.com>

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