test: Snapshot creation failure

This at least runs through the reverter that gets built in case snapshot creation fails. Signed-off-by: Wesley Hershberger <[email protected]>
canonical · Jul 25, 2024 · 8527ebd · 8527ebd
1 parent b03cbf9
commit 8527ebd
Show file tree

Hide file tree

Showing 2 changed files with 25 additions and 0 deletions.
diff --git a/test/main.sh b/test/main.sh
@@ -317,6 +317,7 @@ if [ "${1:-"all"}" != "cluster" ]; then
     run_test test_snap_expiry "snapshot expiry"
     run_test test_snap_schedule "snapshot scheduling"
     run_test test_snap_volume_db_recovery "snapshot volume database record recovery"
+    run_test test_snap_fail "snapshot creation failure"
     run_test test_config_profiles "profiles and configuration"
     run_test test_config_edit "container configuration edit"
     run_test test_property "container property"

diff --git a/test/suites/snapshots.sh b/test/suites/snapshots.sh
@@ -415,3 +415,27 @@ test_snap_volume_db_recovery() {
   lxc start c1
   lxc delete -f c1
 }
+
+test_snap_fail() {
+  local lxd_backend
+  lxd_backend=$(storage_backend "$LXD_DIR")
+
+  ensure_import_testimage
+
+  if [ "${lxd_backend}" = "zfs" ]; then
+    # Containers should fail to snapshot when root is full (can't write to backup.yaml)
+    lxc launch testimage c1 --device root,size=3GiB
+    lxc exec c1 -- dd if=/dev/urandom of=/root/big.bin count=100 bs=100M || true
+
+    exitCode=0
+    timeout 30s lxc snapshot c1 || exitCode=$?
+
+    lxc ls
+
+    # If the timeout was reached, probably a deadlock
+    # https://github.com/canonical/lxd/issues/13466
+    [ "${exitCode}" -ne 124 ]
+
+    [ "$(lxc ls -c nS -f csv | awk -F ',' '/c1/{print $2}')" -eq 0 ]
+  fi
+}