diff --git a/lib/errors.py b/lib/errors.py
index 062b6583b49d6474e93a94787635183636da9c96..ca3050f756b5a5078b8ec092428dba9804faf0d9 100644
--- a/lib/errors.py
+++ b/lib/errors.py
@@ -63,14 +63,6 @@ class GenericError(Exception):
   """
 
 
-class LVMError(GenericError):
-  """LVM-related exception.
-
-  This exception codifies problems with LVM setup.
-
-  """
-
-
 class LockError(GenericError):
   """Lock error exception.
 
@@ -272,12 +264,6 @@ class TypeEnforcementError(GenericError):
   """
 
 
-class SshKeyError(GenericError):
-  """Invalid SSH key.
-
-  """
-
-
 class X509CertError(GenericError):
   """Invalid X509 certificate.
 
@@ -357,15 +343,6 @@ class JobQueueFull(JobQueueError):
   """
 
 
-class ConfdRequestError(GenericError):
-  """A request error in Ganeti confd.
-
-  Events that should make confd abort the current request and proceed serving
-  different ones.
-
-  """
-
-
 class ConfdMagicError(GenericError):
   """A magic fourcc error in Ganeti confd.