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This exposes information about disk sizes to OS install scripts. instance-guix
uses this if available to determine the size of the VM image.
Submitted upstream:
https://github.com/ganeti/ganeti/pull/1503
diff --git a/lib/backend.py b/lib/backend.py
--- a/lib/backend.py
+++ b/lib/backend.py
@@ -4305,6 +4305,7 @@ def OSEnvironment(instance, inst_os, debug=0):
uri = _CalculateDeviceURI(instance, disk, real_disk)
result["DISK_%d_ACCESS" % idx] = disk.mode
result["DISK_%d_UUID" % idx] = disk.uuid
+ result["DISK_%d_SIZE" % idx] = str(disk.size)
if real_disk.dev_path:
result["DISK_%d_PATH" % idx] = real_disk.dev_path
if uri:
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