diff --git a/.github/workflows/scripts/qemu-6-tests.sh b/.github/workflows/scripts/qemu-6-tests.sh
index fac953c8fa56..5d511a7cf65a 100755
--- a/.github/workflows/scripts/qemu-6-tests.sh
+++ b/.github/workflows/scripts/qemu-6-tests.sh
@@ -85,17 +85,34 @@ case "$1" in
     sudo mv -f /tmp/*.txt /var/tmp
     sudo -E modprobe zfs
     TDIR="/usr/share/zfs"
+
+    sudo fallocate -l 16G /swapfile || true
+    sudo chmod 600 /swapfile || true
+    sudo mkswap /swapfile || true
+    sudo swapon /swapfile || true
     ;;
 esac
 
 # run functional testings and save exitcode
 cd /var/tmp
-TAGS=$2/$3
+# TAGS=$2/$3
+TAGS=raidz
 sudo dmesg -c > dmesg-prerun.txt
 mount > mount.txt
+
+echo "--- Swap info ---"
+# sudo bash -c 'echo 1 > /sys/module/zswap/parameters/enabled' || true
+echo "SWAPON:"
+sudo swapon --show || true
+cat /proc/swaps  || true
+cat /proc/meminfo || true
+echo "---"
 df -h > df-prerun.txt
 $TDIR/zfs-tests.sh -vK -s 3GB -T $TAGS
 RV=$?
+
+echo "-- zswap-post --"
+# grep -r . /sys/kernel/debug/zswap || true
 df -h > df-postrun.txt
 echo $RV > tests-exitcode.txt
 sync
diff --git a/.github/workflows/zfs-qemu.yml b/.github/workflows/zfs-qemu.yml
index 67d915adfef5..08e2ec27d2f4 100644
--- a/.github/workflows/zfs-qemu.yml
+++ b/.github/workflows/zfs-qemu.yml
@@ -17,7 +17,7 @@ jobs:
         # all:
         # os:  [almalinux8, almalinux9, archlinux, centos-stream9, fedora39, fedora40, debian11, debian12, freebsd13, freebsd13r, freebsd14, freebsd14r, freebsd15, ubuntu20, ubuntu22, ubuntu24]
         # openzfs:
-        os: [almalinux8, almalinux9, centos-stream9, debian11, debian12, fedora39, fedora40, freebsd13, freebsd13r, freebsd14, freebsd14r, ubuntu20, ubuntu22, ubuntu24]
+        os: [fedora40]
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4