diff --git a/openstack/compute/v2/servers/errors.go b/openstack/compute/v2/servers/errors.go
new file mode 100644
index 0000000..ebfcdcd
--- /dev/null
+++ b/openstack/compute/v2/servers/errors.go
@@ -0,0 +1,65 @@
+package servers
+
+import (
+	"fmt"
+
+	"github.com/gophercloud/gophercloud"
+)
+
+// ErrNeitherImageIDNorImageNameProvided is the error when neither the image
+// ID nor the image name is provided for a server operation
+type ErrNeitherImageIDNorImageNameProvided struct{ *gophercloud.ErrMissingInput }
+
+func (e ErrNeitherImageIDNorImageNameProvided) Error() string {
+	return "One and only one of the image ID and the image name must be provided."
+}
+
+// ErrNeitherFlavorIDNorFlavorNameProvided is the error when neither the flavor
+// ID nor the flavor name is provided for a server operation
+type ErrNeitherFlavorIDNorFlavorNameProvided struct{ *gophercloud.ErrMissingInput }
+
+func (e ErrNeitherFlavorIDNorFlavorNameProvided) Error() string {
+	return "One and only one of the flavor ID and the flavor name must be provided."
+}
+
+// ErrInvalidHowParameterProvided is the error when an unknown value is given
+// for the `how` argument
+type ErrInvalidHowParameterProvided struct{ *gophercloud.ErrInvalidInput }
+
+// ErrNoAdminPassProvided is the error when an administrative password isn't
+// provided for a server operation
+type ErrNoAdminPassProvided struct{ *gophercloud.ErrMissingInput }
+
+// ErrNoImageIDProvided is the error when an image ID isn't provided for a server
+// operation
+type ErrNoImageIDProvided struct{ *gophercloud.ErrMissingInput }
+
+// ErrNoIDProvided is the error when a server ID isn't provided for a server
+// operation
+type ErrNoIDProvided struct{ *gophercloud.ErrMissingInput }
+
+// ErrServer is a generic error type for servers HTTP operations.
+type ErrServer struct {
+	*gophercloud.ErrUnexpectedResponseCode
+	ID string
+}
+
+func (se *ErrServer) Error() string {
+	return fmt.Sprintf("Error while executing HTTP request for server [%s]", se.ID)
+}
+
+// Error404 overrides the generic 404 error message.
+func (se *ErrServer) Error404(e *gophercloud.ErrUnexpectedResponseCode) error {
+	se.ErrUnexpectedResponseCode = e
+	return &ErrServerNotFound{se}
+}
+
+// ErrServerNotFound is the error when a 404 is received during server HTTP
+// operations.
+type ErrServerNotFound struct {
+	*ErrServer
+}
+
+func (e *ErrServerNotFound) Error() string {
+	return fmt.Sprintf("I couldn't find server [%s]", e.ID)
+}
diff --git a/openstack/compute/v2/servers/requests.go b/openstack/compute/v2/servers/requests.go
index 06db312..c6d3a8e 100644
--- a/openstack/compute/v2/servers/requests.go
+++ b/openstack/compute/v2/servers/requests.go
@@ -759,7 +759,7 @@
 // Metadatum requests the key-value pair with the given key for the given server ID.
 func Metadatum(client *gophercloud.ServiceClient, id, key string) GetMetadatumResult {
 	var res GetMetadatumResult
-	_, res.Err = client.Request("GET", metadatumURL(client, id, key), gophercloud.RequestOpts{
+	_, res.Err = client.Request("GET", metadatumURL(client, id, key), &gophercloud.RequestOpts{
 		JSONResponse: &res.Body,
 	})
 	return res