Better errors for mkdirp failure in mirror.

1 files changed, 10 insertions, 2 deletions

diff --git a/lib/spack/spack/mirror.py b/lib/spack/spack/mirror.py
index 1d9b0e7ef2..d4f1bb89fe 100644
--- a/lib/spack/spack/mirror.py
+++ b/lib/spack/spack/mirror.py
@@ -147,7 +147,11 @@ def create(path, specs, **kwargs):
     # Get the absolute path of the root before we start jumping around.
     mirror_root = os.path.abspath(path)
     if not os.path.isdir(mirror_root):
-        mkdirp(mirror_root)
+        try:
+            mkdirp(mirror_root)
+        except OSError as e:
+            raise MirrorError(
+                "Cannot create directory '%s':" % mirror_root, str(e))
 
     # Things to keep track of while parsing specs.
     present  = []
@@ -164,7 +168,11 @@ def create(path, specs, **kwargs):
             # create a subdirectory for the current package@version
             archive_path = os.path.abspath(join_path(mirror_root, mirror_archive_path(spec)))
             subdir = os.path.dirname(archive_path)
-            mkdirp(subdir)
+            try:
+                mkdirp(subdir)
+            except OSError as e:
+                raise MirrorError(
+                    "Cannot create directory '%s':" % subdir, str(e))
 
             if os.path.exists(archive_path):
                 tty.msg("Already added %s" % spec.format("$_$@"))