From 6929cae97a36b0196d0fa97f41bb3d0e4bea5c9a Mon Sep 17 00:00:00 2001
From: Ian Jackson <iwj@xenproject.org>
Date: Mon, 4 Oct 2021 17:55:48 +0100
Subject: [PATCH] mg-repro-setup: Check allocation feasibility at the start

Signed-off-by: Ian Jackson <iwj@xenproject.org>
---
 mg-repro-setup | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/mg-repro-setup b/mg-repro-setup
index 56d27d4..895f299 100755
--- a/mg-repro-setup
+++ b/mg-repro-setup
@@ -260,6 +260,17 @@ if [ "${alloc_idents[*]}" ]; then
                 echo >&2 'cannot hand-allocate in a way that will free'
                 exit 1
         fi
+
+	set +e
+	alloc_output=$(
+		./mg-allocate --dry-run $duration "${alloc_specs[@]}" 2>&1
+	)
+	alloc_rc=$?
+	set -e
+	test $alloc_rc = 0 ||
+	fail "requested allocation(s) infeasible:
+$alloc_output
+"
 fi
 
 flight=$(./cs-adjust-flight new:$blessing)
-- 
2.39.5