Bash 5.0 changed 'wait' with no arguments to also wait for all
process substitutions. For example, with Bash 4.4 this completes,
after waiting for the sleep
(
sleep 1 &
wait
) > >(tee /dev/null)
but with Bash 5.0 it does not. The kvm-unit-tests (overly) complex
bash scripts have a 'run_migration ... 2> >(tee /dev/stderr)'
where the '2> >(tee /dev/stderr)' comes from 'run_qemu'. Since
'run_migration' calls 'wait' it will never complete with Bash 5.0.
Resolve by implementing our own wait; just a loop on job count.
Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
scripts/arch-run.bash | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index d3ca19d49952..da1a9d7871e5 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash
@@ -156,7 +156,11 @@ run_migration ()
echo > ${fifo}
wait $incoming_pid
ret=$?
- wait
+
+ while (( $(jobs -r | wc -l) > 0 )); do
+ sleep 0.5
+ done
+
return $ret
}
--
2.25.1
