Enter vmmHEADmaster

A QEMU/KVM virtual machine manager in one POSIX shell script. Each
VM is a directory of plain files under $VMMDIR, configured by a
hand-edited KEY=VALUE file that is parsed rather than sourced, so
nothing in it can inject a raw QEMU argument.

Control is a QMP FIFO pair inside that directory, guarded by its
permissions alone; nothing binds a TCP port. The tests are TAP
without a framework and boot real guests where the host allows.

1 files changed, 46 insertions, 0 deletions

diff --git a/tests/clone b/tests/clone
new file mode 100644
index 0000000..b1ffb92
--- /dev/null
+++ b/tests/clone
@@ -0,0 +1,46 @@
+# clone and delete.
+
+"$VMM" create cl1 64M >/dev/null 2>&1
+cfg cl1 <<EOF
+HOSTFWD="2222:22"
+EOF
+
+exits 0 "clone copies a stopped VM" clone cl1 cl2
+holds "clone copies config byte for byte" \
+	cmp -s "$VMMDIR/cl1/config" "$VMMDIR/cl2/config"
+holds "clone owns a separate fixed disk" \
+	test -f "$VMMDIR/cl2/disk.qcow2"
+holds "clone copies the source disk contents" \
+	cmp -s "$VMMDIR/cl1/disk.qcow2" "$VMMDIR/cl2/disk.qcow2"
+holds "clone gets a new uuid" \
+	test "$(cat "$VMMDIR/cl1/uuid")" != "$(cat "$VMMDIR/cl2/uuid")"
+# The uuid feeds the MAC, so a copy that kept either would collide with
+# its source on the first network it joined.
+m1=$("$VMM" dryrun cl1 2>/dev/null | sed -n 's/.*mac=\([0-9a-f:]*\).*/\1/p')
+m2=$("$VMM" dryrun cl2 2>/dev/null | sed -n 's/.*mac=\([0-9a-f:]*\).*/\1/p')
+holds "the clone's MAC differs from its source's" \
+	test -n "$m1" -a "$m1" != "$m2"
+
+exits 1 "clone refuses an existing destination" clone cl1 cl2
+
+# Copy failures leave an incomplete destination without committing config.
+mv "$VMMDIR/cl1/disk.qcow2" "$WORK/cl1.qcow2"
+exits 1 "clone reports a disk copy failure" clone cl1 clf
+holds "a failed clone leaves an incomplete directory" test -d "$VMMDIR/clf"
+holds "a failed clone does not commit a config" test ! -e "$VMMDIR/clf/config"
+mv "$WORK/cl1.qcow2" "$VMMDIR/cl1/disk.qcow2"
+
+# A partial destination is preserved for manual inspection.
+mkdir -p "$VMMDIR/clx"
+printf 'partial\n' > "$VMMDIR/clx/junk"
+exits 1 "clone refuses an incomplete destination" clone cl1 clx
+holds "the refused clone leaves the partial contents alone" \
+	test -f "$VMMDIR/clx/junk"
+unlink "$VMMDIR/clx/junk"
+rmdir "$VMMDIR/clx"
+
+exits 0 "delete -f removes a stopped VM" delete -f cl2
+holds "delete really removes the directory" test ! -e "$VMMDIR/cl2"
+holds "deleting a clone leaves the source disk alone" \
+	test -f "$VMMDIR/cl1/disk.qcow2"
+exits 1 "delete without -f and without a tty refuses" delete cl1