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=== Description (from pull-request) ===
There's a few more tests to add, but this adds most of them:
- VM create.
- VM grow on next reboot.
- VM shrink prevented.
- VM create after storage volume.size changed.
- VM create after storage volume.block.filesystem changed.
- VM create from profile with disk smaller than default VM volume size.
- VM migrate across pools with disk size larger than volume.size.
- VM migrate across pools with disk size smaller than volume.size.
Signed-off-by: Thomas Parrott <thomas.parr...@canonical.com>
From 9e7f5e431d73348d67d1f1a643d8f29c9bead2dd Mon Sep 17 00:00:00 2001
From: Thomas Parrott <thomas.parr...@canonical.com>
Date: Mon, 7 Dec 2020 20:57:38 +0000
Subject: [PATCH] Adds test for LXD VMs
Signed-off-by: Thomas Parrott <thomas.parr...@canonical.com>
---
bin/test-lxd-vm | 152 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 152 insertions(+)
create mode 100755 bin/test-lxd-vm
diff --git a/bin/test-lxd-vm b/bin/test-lxd-vm
new file mode 100755
index 0000000..7c51b65
--- /dev/null
+++ b/bin/test-lxd-vm
@@ -0,0 +1,152 @@
+#!/bin/sh
+set -eux
+
+cleanup() {
+ echo ""
+ if [ "${FAIL}" = "1" ]; then
+ echo "Test failed"
+ exit 1
+ fi
+
+ echo "Test passed"
+ exit 0
+}
+
+poolDriverList="${1:-dir btrfs lvm zfs}"
+FAIL=1
+trap cleanup EXIT HUP INT TERM
+
+# Wait for snapd seeding
+sleep 1m
+
+# Configure to use the proxy
+curl -s http://canonical-lxd.stgraber.org/config/snapd.sh | sh
+
+# Install LXD
+while :; do
+ [ ! -e /usr/bin/lxd ] && break
+ apt remove --purge lxd lxd-client --yes && break
+done
+snap install lxd --edge
+snap install jq
+snap refresh lxd --channel=latest/edge
+lxd waitready --timeout=300
+
+# Configure LXD
+lxc network create lxdbr0
+lxc profile device add default eth0 nic network=lxdbr0
+
+for poolDriver in $poolDriverList
+do
+ echo "==> Create storage pool using driver ${poolDriver}"
+ if [ "${poolDriver}" = "dir" ]; then
+ lxc storage create vmpool "${poolDriver}"
+ else
+ lxc storage create vmpool "${poolDriver}" size=20GB
+ fi
+
+ echo "==> Create VM and boot"
+ lxc init images:ubuntu/20.04/cloud v1 --vm -s vmpool
+ lxc start v1
+ sleep 60
+ lxc info v1
+
+ echo "==> Checking VM root disk size is 10GB"
+ lxc exec v1 -- df -B1000000000 | grep sda2 | grep 10
+
+ echo "==> Increasing VM root disk size for next boot"
+ lxc config device set v1 root size=11GB
+ lxc config get v1 volatile.root.apply_quota | grep 11GB
+ lxc stop -f v1
+ lxc start v1
+ sleep 60
+
+ echo "==> Checking VM root disk size is 11GB"
+ lxc exec v1 -- df -B1000000000 | grep sda2 | grep 11
+
+ echo "==> Check VM shrink is blocked"
+ ! lxc config device set v1 root size=10GB || false
+
+ echo "==> Deleting VM"
+ lxc delete -f v1
+
+ echo "==> Change volume.size on pool and create VM"
+ lxc storage set vmpool volume.size 6GB
+ lxc init images:ubuntu/20.04/cloud v1 --vm -s vmpool
+ lxc start v1
+ sleep 60
+ lxc info v1
+
+ echo "==> Checking VM root disk size is 6GB"
+ lxc exec v1 -- df -B1000000000 | grep sda2 | grep 6
+
+ echo "==> Deleting VM and reset pool volume.size"
+ lxc delete -f v1
+ lxc storage unset vmpool volume.size
+
+ if [ "${poolDriver}" = "lvm" ]; then
+ echo "==> Change volume.block.filesystem on pool and create VM"
+ lxc storage set vmpool volume.block.filesystem xfs
+ lxc init images:ubuntu/20.04/cloud v1 --vm -s vmpool
+ lxc start v1
+ sleep 60
+ lxc info v1
+
+ echo "==> Checking VM config disk filesyste is XFS"
+ serverPID="$(lxc query /1.0 | jq .environment.server_pid)"
+ nsenter -m -t "${serverPID}" stat -f -c %T
/var/snap/lxd/common/lxd/virtual-machines/v1 | grep xfs
+
+ echo "==> Deleting VM"
+ lxc delete -f v1
+ lxc storage unset vmpool volume.block.filesystem
+ fi
+
+ echo "==> Create VM from profile with small disk size"
+ lxc profile copy default vmsmall
+ lxc profile device add vmsmall root disk pool=vmpool path=/ size=7GB
+ lxc init images:ubuntu/20.04/cloud v1 --vm -p vmsmall
+ lxc start v1
+ sleep 60
+ lxc info v1
+
+ echo "==> Checking VM root disk size is 7GB"
+ lxc exec v1 -- df -B1000000000 | grep sda2 | grep 7
+ lxc stop -f v1
+
+ echo "==> Copy to different storage pool and check size"
+ dstPoolDriver=zfs # Use ZFS storage pool as that fixed volumes not
files.
+ if [ "${poolDriver}" = "zfs" ]; then
+ dstPoolDriver=lvm # Use something different when testing ZFS.
+ fi
+
+ lxc storage create vmpool2 "${dstPoolDriver}" size=20GB
+ lxc copy v1 v2 -s vmpool2
+ lxc start v2
+ sleep 60
+ lxc info v2
+
+ echo "==> Checking copied VM root disk size is 7GB"
+ lxc exec v2 -- df -B1000000000 | grep sda2 | grep 7
+ lxc delete -f v2
+
+ echo "==> Grow above default voume size and copy to different storage
pool"
+ lxc config device override v1 root size=11GB
+ lxc copy v1 v2 -s vmpool2
+ lxc start v2
+ sleep 60
+ lxc info v2
+
+ echo "==> Checking copied VM root disk size is 11GB"
+ lxc exec v2 -- df -B1000000000 | grep sda2 | grep 11
+ lxc delete -f v2
+
+ echo "==> Deleting VM and vmsmall profile"
+ lxc delete -f v1
+ lxc profile delete vmsmall
+
+ echo "==> Deleting storage pool"
+ lxc storage delete vmpool2
+ lxc storage delete vmpool
+done
+
+FAIL=0
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