[lorax 1/2] Check if /proc is mounted (#741722)

[Martin Gracik]

Needed for proper functionality in chroot,
so if it is not there, exit before doing anything.
---
 src/pylorax/__init__.py |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/src/pylorax/__init__.py b/src/pylorax/__init__.py
index 8eb6c7f..85a7567 100644
--- a/src/pylorax/__init__.py
+++ b/src/pylorax/__init__.py
@@ -170,6 +170,13 @@ class Lorax(BaseLoraxClass):
             logger.critical("no root privileges")
             sys.exit(1)

+        # check if /proc is mounted
+        logger.info("checking /proc")
+        if (not os.path.isdir("/proc") and not os.path.exists("/proc/mounts")
+                and not os.path.exists("/proc/devices")):
+            logger.critical("missing required /proc files (not mounted?)")
+            sys.exit(1)
+
         # do we have all lorax required commands?
         self.lcmds = constants.LoraxRequiredCommands()

[lorax 2/2] Ignore remove errors

[Martin Gracik]

On some nfs mounts the shutil.rmtree may traceback
when removing some files. This is not such a problem
so we can ignore these errors and continue.
---
 src/pylorax/yumhelper.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/pylorax/yumhelper.py b/src/pylorax/yumhelper.py
index 04ad140..904fdc2 100644
--- a/src/pylorax/yumhelper.py
+++ b/src/pylorax/yumhelper.py
@@ -117,7 +117,7 @@ class LoraxYumHelper(object):
                     if os.path.islink(fname) or os.path.isfile(fname):
                         os.unlink(fname)
                     else:
-                        shutil.rmtree(fname)
+                        shutil.rmtree(fname, ignore_errors=True)

logger.debug("removed {0}".format(fname))
                     count += 1