Hi,
using GRASS on a cluster, I have troubles with very fast mini-jobs run
in parallel:
ERROR: Unable to make mapset element .tmp/blade07
(/home/neteler/grassdata/patUTM32/terra_lst1km20020730.LST_Day_1km.filt2.139412/.tmp/blade07):
File exists
Each job is running in an own mapset and taking the process ID as part of the
mapset name. Still above problem appears.
Source:
lib/gis/mapset_msc.c
43 /* now append element, one directory at a time, to path */
44 while (1) {
45 if (*element == '/' || *element == 0) {
46 *p = 0;
47 if (access(path, 0) != 0) { /* directory not yet created */
48 if (G_mkdir(path) != 0)
49 G_fatal_error(_("Unable to make mapset
element %s (%s): %s"),
50 p_element, path,
strerror(errno));
51 }
52 if (access(path, 0) != 0) /* directory not
accessible */
53 G_fatal_error(_("Unable to make mapset element
%s (%s): %s"),
54 p_element, path,
strerror(errno));
55 if (*element == 0)
56 return 1;
57 }
58 *p++ = *element++;
59 }
60 }
I wonder if G_warning() wouldn't be sufficient here in the "File exists" case.
Currently G_fatal_error() simply breaks the job.
Markus