Re: [Qemu-devel] [PATCH v4 1/1] tests/qemu-iotests: adding savevm/loadvm with postcopy flag test

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Daniel Henrique Barboza (danielhb@linux.vnet.ibm.com) wrote:
> 
> 
> On 12/05/2017 04:06 PM, Dr. David Alan Gilbert wrote:
> > * Daniel Henrique Barboza (danielhb@linux.vnet.ibm.com) wrote:
> > > This patch implements a test case for the scenario that was failing
> > > prior to the patch "migration/ram.c: do not set 'postcopy_running' in
> > > POSTCOPY_INCOMING_END", commit acab30b85d.
> > > 
> > > This new test file 201 was derived from the test file 181 authored
> > > by Kevin Wolf.
> > The test is interesting because it enables postcopy but never triggers
> > postcopy entry (using migrate_start_postcopy).  Still it's a good path
> > to check.
> > 
> > It will fail to enable postcopy on older linux hosts or non-linux hosts
> > that don't have userfault though; I'm not sure how your test fails
> > with that.
> Hmmm I am not sure either. I have tested it with Travis and it passed all
> tests,
> including a claimed Mac OS environment. Not sure if that counts.
> 
> I'll see if I can get this tested on a Windows env to see how this test
> fails.

Maybe it's the 'silent=yes' - I'm not sure what silent that silences;
but the migrate_set_capabilities should fail on the old hosts, but
if you're losing the errors then I guess you'll be blissfully unaware.

Dave

> 
> Daniel
> 
> > 
> > Dave
> > 
> > > CC: Kevin Wolf <kwolf@redhat.com>
> > > CC: Max Reitz <mreitz@redhat.com>
> > > CC: Cleber Rosa <crosa@redhat.com>
> > > Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
> > > ---
> > >   tests/qemu-iotests/201     | 116 +++++++++++++++++++++++++++++++++++++++++++++
> > >   tests/qemu-iotests/201.out |  23 +++++++++
> > >   tests/qemu-iotests/group   |   1 +
> > >   3 files changed, 140 insertions(+)
> > >   create mode 100755 tests/qemu-iotests/201
> > >   create mode 100644 tests/qemu-iotests/201.out
> > > 
> > > diff --git a/tests/qemu-iotests/201 b/tests/qemu-iotests/201
> > > new file mode 100755
> > > index 0000000000..9b6e23bbfc
> > > --- /dev/null
> > > +++ b/tests/qemu-iotests/201
> > > @@ -0,0 +1,116 @@
> > > +#!/bin/bash
> > > +#
> > > +# Test savevm and loadvm after live migration with postcopy flag
> > > +#
> > > +# Copyright (C) 2017, IBM Corporation.
> > > +#
> > > +# This file is derived from tests/qemu-iotests/181 by Kevin Wolf
> > > +#
> > > +# This program is free software; you can redistribute it and/or modify
> > > +# it under the terms of the GNU General Public License as published by
> > > +# the Free Software Foundation; either version 2 of the License, or
> > > +# (at your option) any later version.
> > > +#
> > > +# This program is distributed in the hope that it will be useful,
> > > +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> > > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > > +# GNU General Public License for more details.
> > > +#
> > > +# You should have received a copy of the GNU General Public License
> > > +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> > > +
> > > +seq=`basename $0`
> > > +echo "QA output created by $seq"
> > > +
> > > +status=1	# failure is the default!
> > > +
> > > +MIG_SOCKET="${TEST_DIR}/migrate"
> > > +
> > > +# get standard environment, filters and checks
> > > +. ./common.rc
> > > +. ./common.filter
> > > +. ./common.qemu
> > > +
> > > +_cleanup()
> > > +{
> > > +    rm -f "${MIG_SOCKET}"
> > > +    _cleanup_test_img
> > > +    _cleanup_qemu
> > > +}
> > > +trap "_cleanup; exit \$status" 0 1 2 3 15
> > > +
> > > +_supported_fmt qcow2
> > > +_supported_proto generic
> > > +_supported_os Linux
> > > +
> > > +size=64M
> > > +_make_test_img $size
> > > +
> > > +echo
> > > +echo === Starting VMs ===
> > > +echo
> > > +
> > > +qemu_comm_method="monitor"
> > > +
> > > +if [ "$IMGOPTSSYNTAX" = "true" ]; then
> > > +    _launch_qemu \
> > > +        -drive "${TEST_IMG}",cache=${CACHEMODE},id=disk
> > > +else
> > > +    _launch_qemu \
> > > +        -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk
> > > +fi
> > > +src=$QEMU_HANDLE
> > > +
> > > +if [ "$IMGOPTSSYNTAX" = "true" ]; then
> > > +    _launch_qemu \
> > > +        -drive "${TEST_IMG}",cache=${CACHEMODE},id=disk \
> > > +        -incoming "unix:${MIG_SOCKET}"
> > > +else
> > > +    _launch_qemu \
> > > +        -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk \
> > > +        -incoming "unix:${MIG_SOCKET}"
> > > +fi
> > > +dest=$QEMU_HANDLE
> > > +
> > > +echo
> > > +echo === Set \'migrate_set_capability postcopy-ram on\' and migrate ===
> > > +echo
> > > +
> > > +silent=yes
> > > +_send_qemu_cmd $dest 'migrate_set_capability postcopy-ram on' "(qemu)"
> > > +_send_qemu_cmd $src 'migrate_set_capability postcopy-ram on' "(qemu)"
> > > +_send_qemu_cmd $src "migrate -d unix:${MIG_SOCKET}" "(qemu)"
> > > +
> > > +QEMU_COMM_TIMEOUT=1 qemu_cmd_repeat=10 silent=yes \
> > > +    _send_qemu_cmd $src "info migrate" "completed\|failed"
> > > +silent=yes _send_qemu_cmd $src "" "(qemu)"
> > > +
> > > +echo
> > > +echo === Check if migration was successful ===
> > > +echo
> > > +
> > > +QEMU_COMM_TIMEOUT=1 silent=yes \
> > > +    _send_qemu_cmd $src "info migrate" "completed"
> > > +silent=yes _send_qemu_cmd $src "" "(qemu)"
> > > +
> > > +echo
> > > +echo === On destination, execute savevm and loadvm ===
> > > +echo
> > > +
> > > +silent=
> > > +_send_qemu_cmd $dest 'savevm state1' "(qemu)"
> > > +_send_qemu_cmd $dest 'loadvm state1' "(qemu)"
> > > +
> > > +echo
> > > +echo === Shut down and check image ===
> > > +echo
> > > +
> > > +_send_qemu_cmd $src 'quit' ""
> > > +_send_qemu_cmd $dest 'quit' ""
> > > +wait=1 _cleanup_qemu
> > > +
> > > +_check_test_img
> > > +
> > > +# success, all done
> > > +echo "*** done"
> > > +status=0
> > > diff --git a/tests/qemu-iotests/201.out b/tests/qemu-iotests/201.out
> > > new file mode 100644
> > > index 0000000000..9faf06f996
> > > --- /dev/null
> > > +++ b/tests/qemu-iotests/201.out
> > > @@ -0,0 +1,23 @@
> > > +QA output created by 201
> > > +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
> > > +
> > > +=== Starting VMs ===
> > > +
> > > +
> > > +=== Set 'migrate_set_capability postcopy-ram on' and migrate ===
> > > +
> > > +
> > > +=== Check if migration was successful ===
> > > +
> > > +
> > > +=== On destination, execute savevm and loadvm ===
> > > +
> > > +(qemu) savevm state1
> > > +(qemu) loadvm state1
> > > +
> > > +=== Shut down and check image ===
> > > +
> > > +(qemu) quit
> > > +(qemu) quit
> > > +No errors were found on the image.
> > > +*** done
> > > diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> > > index 3e688678dd..c16bc2c5e2 100644
> > > --- a/tests/qemu-iotests/group
> > > +++ b/tests/qemu-iotests/group
> > > @@ -197,3 +197,4 @@
> > >   197 rw auto quick
> > >   198 rw auto
> > >   200 rw auto
> > > +201 rw auto migration
> > > -- 
> > > 2.13.6
> > > 
> > > 
> > --
> > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
> > 
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK