[PATCH] Add readonly disks to the ignored list (#772977)

[Jesse Keating]

If your disk is read-only, we're just going to flat out ignore it and
not offer it to you for anything.
---
 pyanaconda/storage/devicetree.py |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pyanaconda/storage/devicetree.py b/pyanaconda/storage/devicetree.py
index 4cd16cf..4db162e 100644
--- a/pyanaconda/storage/devicetree.py
+++ b/pyanaconda/storage/devicetree.py
@@ -596,6 +596,13 @@ class DeviceTree(object):
                 self.addIgnoredDisk(name)
                 return True

+        # Ignore any readonly disks
+        if udev_device_is_disk(info):
+            if iutil.get_sysfs_attr(info["sysfs_path"], 'ro') == '1':
+                log.debug("Ignoring read only device %s" % name)
+                self.addIgnoredDisk(name)
+                return True
+
         # FIXME: check for virtual devices whose slaves are on the ignore list

def addUdevLVDevice(self, info):