Termix: step through 2.9.2 when updating from 2.8 or older (#18158)

ct/termix.sh

@@ -108,6 +108,12 @@ EOF
   fi
 
   if check_for_gh_release "termix" "Termix-SSH/Termix"; then
+    TERMIX_RELEASE="latest"
+    if [[ "$CS_PREVIOUS_VERSION" =~ ^(release-)?([0-9]+)\.([0-9]+)\. ]] && ((BASH_REMATCH[2] * 100 + BASH_REMATCH[3] < 209)); then
+      TERMIX_RELEASE="release-2.9.2-tag"
+      msg_warn "Termix ${CS_PREVIOUS_VERSION} has to run 2.9.2 once before newer releases accept its database"
+    fi
+
     msg_info "Stopping Termix"
     systemctl stop termix
     msg_ok "Stopped Termix"
@@ -165,7 +171,7 @@ EOF
 
     create_backup /opt/termix/.env
 
-    CLEAN_INSTALL=1 CLEAN_INSTALL_KEEP="db/data data uploads" fetch_and_deploy_gh_release "termix" "Termix-SSH/Termix" "tarball"
+    CLEAN_INSTALL=1 CLEAN_INSTALL_KEEP="db/data data uploads" fetch_and_deploy_gh_release "termix" "Termix-SSH/Termix" "tarball" "$TERMIX_RELEASE"
 
     restore_backup
 
@@ -258,12 +264,24 @@ EOF
 
     msg_info "Starting Termix"
     systemctl daemon-reload
+    TERMIX_START=$(date +%s)
     if ! systemctl start termix; then
       msg_error "Termix failed to start"
       journalctl -u termix -n 30 --no-pager || true
       exit 1
     fi
     msg_ok "Started Termix"
+    if [[ "$TERMIX_RELEASE" != "latest" ]]; then
+      msg_info "Waiting for Termix 2.9.2 to migrate the database"
+      if ! timeout 300 bash -c "until journalctl -u termix --since @${TERMIX_START} --no-pager | grep -q 'Termix backend started successfully'; do sleep 2; done"; then
+        msg_error "Termix 2.9.2 did not finish starting, so the database was not migrated"
+        journalctl -u termix -n 30 --no-pager || true
+        exit 1
+      fi
+      msg_ok "Migrated the database with Termix 2.9.2"
+      msg_warn "Run update again to continue to the current Termix release"
+      exit
+    fi
     msg_ok "Updated successfully!"
   fi
   exit