From 841da7540f4397b0cac5f47537d2a39aca9ec3cf Mon Sep 17 00:00:00 2001
From: Arthur Hanson Rasmusson <arthur@vgpu.io>
Date: Wed, 23 Sep 2026 01:10:40 -0400
Subject: tools: keep all guest-diag artifacts in-tree (push helper, runtime
 launch script, README)

---
 tools/guest-diag/vmcycle.sh | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

(limited to 'tools/guest-diag/vmcycle.sh')

diff --git a/tools/guest-diag/vmcycle.sh b/tools/guest-diag/vmcycle.sh
index 08eb4ea..6faaa75 100755
--- a/tools/guest-diag/vmcycle.sh
+++ b/tools/guest-diag/vmcycle.sh
@@ -1,19 +1,29 @@
 #!/bin/bash
 # vmcycle.sh - reload cycle for the emulated vGPU stack:
 #   stop QEMU -> remove mdevs -> rmmod/insmod open-iov-vfio.ko -> create a
-#   fresh mdev -> patch its UUID into the QEMU launch script -> relaunch.
+#   fresh mdev -> patch its UUID into the runtime launch script -> relaunch.
+#
+# ALL artifacts stay inside this directory (tools/guest-diag/) so nothing is
+# lost on reboot:
+#   launch_qemu_rootport.sh     - template QEMU command line (root-port fix)
+#   launch_qemu_rootport.run.sh - runtime copy with the current mdev UUID
+#   run/qemu.log                - QEMU stderr/stdout of the last launch
 #
 # Usage:  tools/guest-diag/vmcycle.sh
-# Env:    QEMU_SCRIPT (default: ./launch_qemu_rootport.sh next to this script)
-#         MDEV_PARENT (default: 0000:01:00.0)
+# Env:    MDEV_PARENT (default: 0000:01:00.0)
 #         MDEV_TYPE   (default: nvidia-nvidia-vgpu-turing)
 set -e
 
 HERE="$(cd "$(dirname "$0")" && pwd)"
-QEMU_SCRIPT="${QEMU_SCRIPT:-$HERE/launch_qemu_rootport.sh}"
+TEMPLATE="$HERE/launch_qemu_rootport.sh"
+QEMU_SCRIPT="${QEMU_SCRIPT:-$HERE/launch_qemu_rootport.run.sh}"
 MODULE="${MODULE:-$HERE/../../kernel/open-iov-vfio.ko}"
 MDEV_PARENT="${MDEV_PARENT:-0000:01:00.0}"
 MDEV_TYPE="${MDEV_TYPE:-nvidia-nvidia-vgpu-turing}"
+RUNDIR="$HERE/run"
+
+mkdir -p "$RUNDIR"
+[ -f "$QEMU_SCRIPT" ] || cp "$TEMPLATE" "$QEMU_SCRIPT"
 
 pkill -f qemu-system-x86_64 2>/dev/null || true
 sleep 4
@@ -27,10 +37,10 @@ echo "$U" | sudo tee "/sys/class/mdev_bus/$MDEV_PARENT/mdev_supported_types/$MDE
 sed -i "s|/sys/bus/mdev/devices/[0-9a-f-]*|/sys/bus/mdev/devices/$U|" "$QEMU_SCRIPT"
 mkdir -p /tmp/sockets/e726ba0b-204f-4ec9-91da-983ed7f41d06
 rm -f /tmp/qemu-guest-agent.sock /tmp/qemu-qmp.sock
-(setsid nohup "$QEMU_SCRIPT" > /tmp/opencode-qemu.log 2>&1 &)
+(setsid nohup "$QEMU_SCRIPT" > "$RUNDIR/qemu.log" 2>&1 &)
 sleep 6
 if pgrep -f qemu-system-x86_64 >/dev/null; then
-    echo "VM up (mdev $U)"
+    echo "VM up (mdev $U)  [qemu log: $RUNDIR/qemu.log]"
 else
-    echo "VM FAILED"; tail -3 /tmp/opencode-qemu.log; exit 1
+    echo "VM FAILED"; tail -3 "$RUNDIR/qemu.log"; exit 1
 fi
-- 
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