From: Stefano Brivio <sbrivio(a)redhat.com>
PCAP=1 ./run migrate/basic is oddly satisfying.
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
Message-ID: <20250205230919.205302-7-sbrivio(a)redhat.com>
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
test/lib/layout | 55 +++++++++++++++++++-
test/lib/setup | 127 +++++++++++++++++++++++++++++++++++++++++++++
test/lib/test | 3 ++
test/migrate/basic | 54 +++++++++++++++++++
test/run | 4 ++
5 files changed, 242 insertions(+), 1 deletion(-)
create mode 100644 test/migrate/basic
diff --git a/test/lib/layout b/test/lib/layout
index 4d035728..fddcdc4a 100644
--- a/test/lib/layout
+++ b/test/lib/layout
@@ -134,6 +134,54 @@ layout_two_guests() {
get_info_cols
+ pane_watch_contexts ${PANE_GUEST_1} "guest #1 in namespace #1" qemu_1 guest_1
+ pane_watch_contexts ${PANE_GUEST_2} "guest #2 in namespace #1" qemu_2 guest_2
+
+ tmux send-keys -l -t ${PANE_INFO} 'while cat
'"$STATEBASE/log_pipe"'; do :; done'
+ tmux send-keys -t ${PANE_INFO} -N 100 C-m
+ tmux select-pane -t ${PANE_INFO} -T "test log"
+
+ pane_watch_contexts ${PANE_HOST} host host
+ pane_watch_contexts ${PANE_PASST_1} "passt #1 in namespace #1" pasta_1
passt_1
+ pane_watch_contexts ${PANE_PASST_2} "passt #2 in namespace #1" pasta_1
passt_2
+
+ info_layout "two guests, two passt instances, in namespaces"
+
+ sleep 1
+}
+
+# layout_migrate() - Two guest panes, two passt panes, two passt-repair panes,
+# plus host and log
+layout_migrate() {
+ sleep 1
+
+ tmux kill-pane -a -t 0
+ cmd_write 0 clear
+
+ tmux split-window -v -t passt_test
+ tmux split-window -h -l '33%'
+ tmux split-window -h -t passt_test:1.1
+
+ tmux split-window -h -l '35%' -t passt_test:1.0
+ tmux split-window -v -t passt_test:1.0
+
+ tmux split-window -v -t passt_test:1.4
+ tmux split-window -v -t passt_test:1.6
+
+ tmux split-window -v -t passt_test:1.3
+
+ PANE_GUEST_1=0
+ PANE_GUEST_2=1
+ PANE_INFO=2
+ PANE_MON=3
+ PANE_HOST=4
+ PANE_PASST_REPAIR_1=5
+ PANE_PASST_1=6
+ PANE_PASST_REPAIR_2=7
+ PANE_PASST_2=8
+
+ get_info_cols
+
pane_watch_contexts ${PANE_GUEST_1} "guest #1 in namespace #1" qemu_1 guest_1
pane_watch_contexts ${PANE_GUEST_2} "guest #2 in namespace #2" qemu_2 guest_2
@@ -141,11 +189,16 @@ layout_two_guests() {
tmux send-keys -t ${PANE_INFO} -N 100 C-m
tmux select-pane -t ${PANE_INFO} -T "test log"
+ pane_watch_contexts ${PANE_MON} "QEMU monitor" mon mon
+
pane_watch_contexts ${PANE_HOST} host host
+ pane_watch_contexts ${PANE_PASST_REPAIR_1} "passt-repair #1 in namespace #1"
repair_1 passt_repair_1
pane_watch_contexts ${PANE_PASST_1} "passt #1 in namespace #1" pasta_1
passt_1
+
+ pane_watch_contexts ${PANE_PASST_REPAIR_2} "passt-repair #2 in namespace #2"
repair_2 passt_repair_2
pane_watch_contexts ${PANE_PASST_2} "passt #2 in namespace #2" pasta_2
passt_2
- info_layout "two guests, two passt instances, in namespaces"
+ info_layout "two guests, two passt + passt-repair instances, in namespaces"
sleep 1
}
diff --git a/test/lib/setup b/test/lib/setup
index 580825f1..36aa0c41 100755
--- a/test/lib/setup
+++ b/test/lib/setup
@@ -305,6 +305,110 @@ setup_two_guests() {
context_setup_guest guest_2 ${GUEST_2_CID}
}
+# setup_migrate() - Set up two namespace, run qemu, passt/passt-repair in both
+setup_migrate() {
+ context_setup_host host
+ context_setup_host mon
+ context_setup_host pasta_1
+ context_setup_host pasta_2
+
+ layout_migrate
+
+ # Ports:
+ #
+ # guest #1 | guest #2 | ns #1 | host
+ # --------- |-----------|-----------|------------
+ # 10001 as server | | to guest | to ns #1
+ # 10002 | | as server | to ns #1
+ # 10003 | | to init | as server
+ # 10004 | as server | to guest | to ns #1
+
+ __opts=
+ [ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/pasta_1.pcap"
+ [ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
+ [ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
+ # Option 1: send stuff via spliced path in pasta
+ # context_run_bg pasta_1 "./pasta ${__opts} --trace -l /tmp/pasta1.log -P
${STATESETUP}/pasta_1.pid -t 10001,10002 -T 10003 -u 10001,10002 -U 10003 --config-net
${NSTOOL} hold ${STATESETUP}/ns1.hold"
+ # Option 2: send stuff via tap (--map-guest-addr) instead (useful to see capture of full
migration)
+ context_run_bg pasta_1 "./pasta ${__opts} --trace -l /tmp/pasta1.log -P
${STATESETUP}/pasta_1.pid -t 10001,10002,10004 -T 10003 -u 10001,10002,10004 -U 10003
--map-guest-addr 169.254.1.1 --config-net ${NSTOOL} hold ${STATESETUP}/ns1.hold"
+ context_setup_nstool passt_1 ${STATESETUP}/ns1.hold
+ context_setup_nstool passt_repair_1 ${STATESETUP}/ns1.hold
+
+ context_setup_nstool passt_2 ${STATESETUP}/ns1.hold
+ context_setup_nstool passt_repair_2 ${STATESETUP}/ns1.hold
+
+ context_setup_nstool qemu_1 ${STATESETUP}/ns1.hold
+ context_setup_nstool qemu_2 ${STATESETUP}/ns1.hold
+
+ __ifname="$(context_run qemu_1 "ip -j link show | jq -rM '.[] |
select(.link_type == \"ether\").ifname'")"
+
+ sleep 1
+
+ __opts="--vhost-user"
+ [ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_1.pcap"
+ [ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
+ [ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
+
+ context_run_bg passt_1 "./passt -s ${STATESETUP}/passt_1.socket -P
${STATESETUP}/passt_1.pid -f ${__opts} -t 10001 -u 10001"
+ wait_for [ -f "${STATESETUP}/passt_1.pid" ]
+
+ context_run_bg passt_repair_1 "./passt-repair
${STATESETUP}/passt_1.socket.repair"
+
+ __opts="--vhost-user"
+ [ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_2.pcap"
+ [ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
+ [ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
+
+ context_run_bg passt_2 "./passt -s ${STATESETUP}/passt_2.socket -P
${STATESETUP}/passt_2.pid -f ${__opts} -t 10004 -u 10004"
+ wait_for [ -f "${STATESETUP}/passt_2.pid" ]
+
+ context_run_bg passt_repair_2 "./passt-repair
${STATESETUP}/passt_2.socket.repair"
+
+ __vmem="512M" # Keep migration fast
+ __qemu_netdev1=" \
+ -chardev socket,id=c,path=${STATESETUP}/passt_1.socket \
+ -netdev vhost-user,id=v,chardev=c \
+ -device virtio-net,netdev=v \
+ -object memory-backend-memfd,id=m,share=on,size=${__vmem} \
+ -numa node,memdev=m"
+ __qemu_netdev2=" \
+ -chardev socket,id=c,path=${STATESETUP}/passt_2.socket \
+ -netdev vhost-user,id=v,chardev=c \
+ -device virtio-net,netdev=v \
+ -object memory-backend-memfd,id=m,share=on,size=${__vmem} \
+ -numa node,memdev=m"
+
+ GUEST_1_CID=94557
+ context_run_bg qemu_1 'qemu-system-'"${QEMU_ARCH}" \
+ ' -M accel=kvm:tcg' \
+ ' -m '${__vmem}' -cpu host -smp '${VCPUS} \
+ ' -kernel '"${KERNEL}" \
+ ' -initrd '${INITRAMFS}' -nographic -serial stdio' \
+ ' -nodefaults' \
+ ' -append "console=ttyS0 mitigations=off apparmor=0" ' \
+ " ${__qemu_netdev1}" \
+ " -pidfile ${STATESETUP}/qemu_1.pid" \
+ " -device vhost-vsock-pci,guest-cid=$GUEST_1_CID" \
+ " -monitor unix:${STATESETUP}/qemu_1_mon.sock,server,nowait"
+
+ GUEST_2_CID=94558
+ context_run_bg qemu_2 'qemu-system-'"${QEMU_ARCH}" \
+ ' -M accel=kvm:tcg' \
+ ' -m '${__vmem}' -cpu host -smp '${VCPUS} \
+ ' -kernel '"${KERNEL}" \
+ ' -initrd '${INITRAMFS}' -nographic -serial stdio' \
+ ' -nodefaults' \
+ ' -append "console=ttyS0 mitigations=off apparmor=0" ' \
+ " ${__qemu_netdev2}" \
+ " -pidfile ${STATESETUP}/qemu_2.pid" \
+ " -device vhost-vsock-pci,guest-cid=$GUEST_2_CID" \
+ " -monitor unix:${STATESETUP}/qemu_2_mon.sock,server,nowait" \
+ " -incoming tcp:0:20005"
+
+ context_setup_guest guest_1 ${GUEST_1_CID}
+ # Only available after migration: context_setup_guest guest_2 ${GUEST_2_CID}
+}
+
# teardown_context_watch() - Remove contexts and stop panes watching them
# $1: Pane number watching
# $@: Context names
@@ -384,6 +488,29 @@ teardown_two_guests() {
teardown_context_watch ${PANE_PASST_2} pasta_2 passt_2
}
+# teardown_migrate() - Exit namespaces, kill qemu processes, passt and pasta
+teardown_migrate() {
+ ${NSTOOL} exec ${STATESETUP}/ns1.hold -- kill $(cat
"${STATESETUP}/qemu_1.pid")
+ ${NSTOOL} exec ${STATESETUP}/ns1.hold -- kill $(cat
"${STATESETUP}/qemu_2.pid")
+ context_wait qemu_1
+ context_wait qemu_2
+
+ ${NSTOOL} exec ${STATESETUP}/ns1.hold -- kill $(cat
"${STATESETUP}/passt_2.pid")
+ context_wait passt_1
+ context_wait passt_2
+ ${NSTOOL} stop "${STATESETUP}/ns1.hold"
+ context_wait pasta_1
+
+ rm -f "${STATESETUP}/passt_[12].pid" "${STATESETUP}/pasta_[12].pid"
+
+ teardown_context_watch ${PANE_HOST} host
+
+ teardown_context_watch ${PANE_GUEST_1} qemu_1 guest_1
+ teardown_context_watch ${PANE_GUEST_2} qemu_2 guest_2
+ teardown_context_watch ${PANE_PASST_1} pasta_1 passt_1
+ teardown_context_watch ${PANE_PASST_2} pasta_1 passt_2
+}
+
# teardown_demo_passt() - Exit namespace, kill qemu, passt and pasta
teardown_demo_passt() {
tmux send-keys -t ${PANE_GUEST} "C-c"
diff --git a/test/lib/test b/test/lib/test
index 91729af7..6e88562d 100755
--- a/test/lib/test
+++ b/test/lib/test
@@ -177,6 +177,9 @@ test_one_line() {
"guest2w")
pane_or_context_wait guest_2 || TEST_ONE_nok=1
;;
+ "mon")
+ pane_or_context_run mon "${__arg}" || TEST_ONE_nok=1
+ ;;
"ns")
pane_or_context_run ns "${__arg}" || TEST_ONE_nok=1
;;
diff --git a/test/migrate/basic b/test/migrate/basic
new file mode 100644
index 00000000..0aaddd40
--- /dev/null
+++ b/test/migrate/basic
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# PASST - Plug A Simple Socket Transport
+# for qemu/UNIX domain socket mode
+#
+# PASTA - Pack A Subtle Tap Abstraction
+# for network namespace/tap device mode
+#
+# test/migrate/basic - Check basic migration functionality
+#
+# Copyright (c) 2025 Red Hat GmbH
+# Author: Stefano Brivio <sbrivio(a)redhat.com>
+
+g1tools ip jq dhclient socat cat
+htools ip jq
+
+test Interface name
+g1out IFNAME1 ip -j link show | jq -rM '.[] | select(.link_type ==
"ether").ifname'
+hout HOST_IFNAME ip -j -4 route show|jq -rM '[.[] | select(.dst ==
"default").dev] | .[0]'
+hout HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst ==
"default").dev] | .[0]'
+check [ -n "__IFNAME1__" ]
+
+test DHCP: address
+guest1 ip link set dev __IFNAME1__ up
+guest1 /sbin/dhclient -4 __IFNAME1__
+g1out ADDR1 ip -j -4 addr show|jq -rM '.[] | select(.ifname ==
"__IFNAME1__").addr_info[0].local'
+hout HOST_ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname ==
"__HOST_IFNAME__").addr_info[0].local'
+check [ "__ADDR1__" = "__HOST_ADDR__" ]
+
+test DHCPv6: address
+# Link is up now, wait for DAD to complete
+guest1 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep
0.1; done
+guest1 /sbin/dhclient -6 __IFNAME1__
+# Wait for DAD to complete on the DHCP address
+guest1 while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep
0.1; done
+g1out ADDR1_6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname ==
"__IFNAME1__").addr_info[] | select(.prefixlen == 128).local] | .[0]'
+hout HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname ==
"__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and
.deprecated != true).local] | .[0]'
+check [ "__ADDR1_6__" = "__HOST_ADDR6__" ]
+
+test TCP/IPv4: guest1/guest2 > host
+g1out GW1 ip -j -4 route show|jq -rM '.[] | select(.dst ==
"default").gateway'
+hostb socat -u TCP4-LISTEN:10006 OPEN:msg,create,trunc
+sleep 1
+# Option 1: via spliced path in pasta, namespace to host
+# guest1b { printf "Hello from guest 1"; sleep 10; printf " and from guest
2\n"; } | socat -u STDIN TCP4:__GW1__:10003
+# Option 2: via --map-guest-addr (tap) in pasta, namespace to host
+guest1b { printf "Hello from guest 1"; sleep 3; printf " and from guest
2\n"; } | socat -u STDIN TCP4:169.254.1.1:10006
+sleep 1
+
+mon echo "migrate tcp:0:20005" | socat -u STDIN
UNIX:__STATESETUP__/qemu_1_mon.sock
+
+hostw
+hout MSG cat msg
+check [ "__MSG__" = "Hello from guest 1 and from guest 2" ]
diff --git a/test/run b/test/run
index fc710475..e5dd2f56 100755
--- a/test/run
+++ b/test/run
@@ -130,6 +130,10 @@ run() {
test two_guests_vu/basic
teardown two_guests
+ setup migrate
+ test migrate/basic
+ teardown migrate
+
VALGRIND=0
VHOST_USER=0
#setup passt_in_ns
--
2.48.1