initial commit, add our four patches and a README

README.md

+# Patches for Ganeti
+
+This repository contains our patches for ganeti which we apply on top of the already patched debian package.
+
+In the near future it shall also contain a guide on how to build ganeti with those patches and maybe some tooling for that.
+See ticket #13 on RT.
+
+## Patch Details
+
+### `fix_ceph_showmap.patch`
+
+Fixes an incompatibility with current ceph versions.
+
+### `increase_max_disk_count.patch`
+
+*sigh*
+
+There is a constant number of allowed disks that may be attached to a VM. We increase this limit.
+
+### `remove_blockdev_from_mirrored_list.patch` and `remove_blockdev_from_movable_list.patch`
+
+Removes block devices from lists of mirrored and movable devices. This prevents such VMs from being migrated.
+
+This may not solve the general case, but is makes it compatible with our usage.
+

fix_ceph_showmap.patch

+--- a/lib/storage/bdev.py
++++ b/lib/storage/bdev.py
+@@ -1020,8 +1020,6 @@ class RADOSBlockDevice(base.BlockDev):
+       showmap_cmd = [
+         constants.RBD_CMD,
+         "showmapped",
+-        "-p",
+-        pool,
+         "--format",
+         "json"
+         ]

increase_max_disk_count.patch

+--- a/src/Ganeti/HTools/Types.hs	2015-12-16 14:34:43.000000000 +0100
++++ b/src/Ganeti/HTools/Types.hs	2017-11-03 21:42:53.486742240 +0100
+@@ -215,7 +215,7 @@
+                     }
+ 
+ maxDisks :: Int
+-maxDisks = 16
++maxDisks = 64
+ 
+ maxNics :: Int
+ maxNics = 8

remove_blockdev_from_mirrored_list.patch

+--- a/src/Ganeti/Constants.hs	2015-12-16 14:34:43.000000000 +0100
++++ b/src/Ganeti/Constants.hs	2017-11-03 20:42:28.489477592 +0100
+@@ -942,7 +942,7 @@
+ dtsExtMirror =
+   ConstantUtils.mkSet $
+   map Types.diskTemplateToRaw
+-  [DTDiskless, DTBlock, DTExt, DTSharedFile, DTRbd, DTGluster]
++  [DTDiskless, DTExt, DTSharedFile, DTRbd, DTGluster]
+ 
+ -- | The set of non-lvm-based disk templates
+ dtsNotLvm :: FrozenSet String

remove_blockdev_from_movable_list.patch

+--- a/src/Ganeti/HTools/Instance.hs	2015-12-16 14:34:43.000000000 +0100
++++ b/src/Ganeti/HTools/Instance.hs	2017-11-03 18:34:37.562544893 +0100
+@@ -168,7 +168,6 @@
+ movableDiskTemplates :: [T.DiskTemplate]
+ movableDiskTemplates =
+   [ T.DTDrbd8
+-  , T.DTBlock
+   , T.DTSharedFile
+   , T.DTGluster
+   , T.DTRbd