5d25fcb702
One problem with flaky tests is they often only fail under CI conditions which makes it hard to debug. We add an optional allow_fail job so developers can trigger the only the flaky tests in the CI environment if they are debugging. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231201093633.2551497-8-alex.bennee@linaro.org>
278 lines
14 KiB
Python
278 lines
14 KiB
Python
# Functional test that boots an s390x Linux guest with ccw and PCI devices
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# attached and checks whether the devices are recognized by Linux
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#
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# Copyright (c) 2020 Red Hat, Inc.
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#
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# Author:
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# Cornelia Huck <cohuck@redhat.com>
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or
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# later. See the COPYING file in the top-level directory.
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import os
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import tempfile
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from avocado import skipUnless
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from avocado_qemu import QemuSystemTest
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from avocado_qemu import exec_command_and_wait_for_pattern
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from avocado_qemu import wait_for_console_pattern
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from avocado.utils import archive
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class S390CCWVirtioMachine(QemuSystemTest):
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KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
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timeout = 120
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def wait_for_console_pattern(self, success_message, vm=None):
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wait_for_console_pattern(self, success_message,
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failure_message='Kernel panic - not syncing',
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vm=vm)
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def wait_for_crw_reports(self):
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exec_command_and_wait_for_pattern(self,
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'while ! (dmesg -c | grep CRW) ; do sleep 1 ; done',
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'CRW reports')
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dmesg_clear_count = 1
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def clear_guest_dmesg(self):
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exec_command_and_wait_for_pattern(self, 'dmesg -c > /dev/null; '
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r'echo dm_clear\ ' + str(self.dmesg_clear_count),
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r'dm_clear ' + str(self.dmesg_clear_count))
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self.dmesg_clear_count += 1
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def test_s390x_devices(self):
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"""
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:avocado: tags=arch:s390x
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:avocado: tags=machine:s390-ccw-virtio
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"""
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kernel_url = ('https://snapshot.debian.org/archive/debian/'
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'20201126T092837Z/dists/buster/main/installer-s390x/'
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'20190702+deb10u6/images/generic/kernel.debian')
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kernel_hash = '5821fbee57d6220a067a8b967d24595621aa1eb6'
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kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
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initrd_url = ('https://snapshot.debian.org/archive/debian/'
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'20201126T092837Z/dists/buster/main/installer-s390x/'
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'20190702+deb10u6/images/generic/initrd.debian')
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initrd_hash = '81ba09c97bef46e8f4660ac25b4ac0a5be3a94d6'
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initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
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self.vm.set_console()
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kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
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'console=sclp0 root=/dev/ram0 BOOT_DEBUG=3')
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self.vm.add_args('-nographic',
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'-kernel', kernel_path,
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'-initrd', initrd_path,
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'-append', kernel_command_line,
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'-cpu', 'max,prno-trng=off',
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'-device', 'virtio-net-ccw,devno=fe.1.1111',
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'-device',
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'virtio-rng-ccw,devno=fe.2.0000,max_revision=0,id=rn1',
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'-device',
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'virtio-rng-ccw,devno=fe.3.1234,max_revision=2,id=rn2',
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'-device', 'zpci,uid=5,target=zzz',
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'-device', 'virtio-net-pci,id=zzz',
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'-device', 'zpci,uid=0xa,fid=12,target=serial',
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'-device', 'virtio-serial-pci,id=serial',
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'-device', 'virtio-balloon-ccw')
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self.vm.launch()
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shell_ready = "sh: can't access tty; job control turned off"
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self.wait_for_console_pattern(shell_ready)
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# first debug shell is too early, we need to wait for device detection
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exec_command_and_wait_for_pattern(self, 'exit', shell_ready)
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ccw_bus_ids="0.1.1111 0.2.0000 0.3.1234"
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pci_bus_ids="0005:00:00.0 000a:00:00.0"
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exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
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ccw_bus_ids)
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exec_command_and_wait_for_pattern(self, 'ls /sys/bus/pci/devices/',
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pci_bus_ids)
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# check that the device at 0.2.0000 is in legacy mode, while the
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# device at 0.3.1234 has the virtio-1 feature bit set
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virtio_rng_features="00000000000000000000000000001100" + \
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"10000000000000000000000000000000"
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virtio_rng_features_legacy="00000000000000000000000000001100" + \
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"00000000000000000000000000000000"
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exec_command_and_wait_for_pattern(self,
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'cat /sys/bus/ccw/devices/0.2.0000/virtio?/features',
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virtio_rng_features_legacy)
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exec_command_and_wait_for_pattern(self,
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'cat /sys/bus/ccw/devices/0.3.1234/virtio?/features',
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virtio_rng_features)
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# check that /dev/hwrng works - and that it's gone after ejecting
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exec_command_and_wait_for_pattern(self,
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'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
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'10+0 records out')
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self.clear_guest_dmesg()
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self.vm.cmd('device_del', id='rn1')
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self.wait_for_crw_reports()
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self.clear_guest_dmesg()
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self.vm.cmd('device_del', id='rn2')
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self.wait_for_crw_reports()
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exec_command_and_wait_for_pattern(self,
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'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
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'dd: /dev/hwrng: No such device')
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# verify that we indeed have virtio-net devices (without having the
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# virtio-net driver handy)
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exec_command_and_wait_for_pattern(self,
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'cat /sys/bus/ccw/devices/0.1.1111/cutype',
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'3832/01')
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exec_command_and_wait_for_pattern(self,
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r'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_vendor',
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r'0x1af4')
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exec_command_and_wait_for_pattern(self,
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r'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_device',
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r'0x0001')
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# check fid propagation
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exec_command_and_wait_for_pattern(self,
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r'cat /sys/bus/pci/devices/000a\:00\:00.0/function_id',
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r'0x0000000c')
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# add another device
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self.clear_guest_dmesg()
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self.vm.cmd('device_add', driver='virtio-net-ccw',
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devno='fe.0.4711', id='net_4711')
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self.wait_for_crw_reports()
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exec_command_and_wait_for_pattern(self, 'for i in 1 2 3 4 5 6 7 ; do '
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'if [ -e /sys/bus/ccw/devices/*4711 ]; then break; fi ;'
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'sleep 1 ; done ; ls /sys/bus/ccw/devices/',
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'0.0.4711')
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# and detach it again
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self.clear_guest_dmesg()
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self.vm.cmd('device_del', id='net_4711')
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self.vm.event_wait(name='DEVICE_DELETED',
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match={'data': {'device': 'net_4711'}})
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self.wait_for_crw_reports()
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exec_command_and_wait_for_pattern(self,
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'ls /sys/bus/ccw/devices/0.0.4711',
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'No such file or directory')
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# test the virtio-balloon device
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exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
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'MemTotal: 115640 kB')
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self.vm.cmd('human-monitor-command', command_line='balloon 96')
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exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
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'MemTotal: 82872 kB')
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self.vm.cmd('human-monitor-command', command_line='balloon 128')
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exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
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'MemTotal: 115640 kB')
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def test_s390x_fedora(self):
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"""
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:avocado: tags=arch:s390x
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:avocado: tags=machine:s390-ccw-virtio
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:avocado: tags=device:virtio-gpu
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:avocado: tags=device:virtio-crypto
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:avocado: tags=device:virtio-net
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:avocado: tags=flaky
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"""
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kernel_url = ('https://archives.fedoraproject.org/pub/archive'
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'/fedora-secondary/releases/31/Server/s390x/os'
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'/images/kernel.img')
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kernel_hash = 'b93d1efcafcf29c1673a4ce371a1f8b43941cfeb'
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kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
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initrd_url = ('https://archives.fedoraproject.org/pub/archive'
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'/fedora-secondary/releases/31/Server/s390x/os'
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'/images/initrd.img')
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initrd_hash = '3de45d411df5624b8d8ef21cd0b44419ab59b12f'
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initrd_path_xz = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
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initrd_path = os.path.join(self.workdir, 'initrd-raw.img')
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archive.lzma_uncompress(initrd_path_xz, initrd_path)
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self.vm.set_console()
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kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE + ' audit=0 '
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'rd.plymouth=0 plymouth.enable=0 rd.rescue')
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self.vm.add_args('-nographic',
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'-smp', '4',
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'-m', '512',
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'-name', 'Some Guest Name',
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'-uuid', '30de4fd9-b4d5-409e-86a5-09b387f70bfa',
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'-kernel', kernel_path,
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'-initrd', initrd_path,
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'-append', kernel_command_line,
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'-device', 'zpci,uid=7,target=n',
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'-device', 'virtio-net-pci,id=n,mac=02:ca:fe:fa:ce:12',
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'-device', 'virtio-rng-ccw,devno=fe.1.9876',
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'-device', 'virtio-gpu-ccw,devno=fe.2.5432')
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self.vm.launch()
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self.wait_for_console_pattern('Entering emergency mode')
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# Some tests to see whether the CLI options have been considered:
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self.log.info("Test whether QEMU CLI options have been considered")
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exec_command_and_wait_for_pattern(self,
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'while ! (dmesg | grep enP7p0s0) ; do sleep 1 ; done',
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'virtio_net virtio0 enP7p0s0: renamed')
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exec_command_and_wait_for_pattern(self, 'lspci',
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'0007:00:00.0 Class 0200: Device 1af4:1000')
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exec_command_and_wait_for_pattern(self,
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'cat /sys/class/net/enP7p0s0/address',
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'02:ca:fe:fa:ce:12')
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exec_command_and_wait_for_pattern(self, 'lscss', '0.1.9876')
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exec_command_and_wait_for_pattern(self, 'lscss', '0.2.5432')
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exec_command_and_wait_for_pattern(self, 'cat /proc/cpuinfo',
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'processors : 4')
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exec_command_and_wait_for_pattern(self, 'grep MemTotal /proc/meminfo',
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'MemTotal: 499848 kB')
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exec_command_and_wait_for_pattern(self, 'grep Name /proc/sysinfo',
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'Extended Name: Some Guest Name')
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exec_command_and_wait_for_pattern(self, 'grep UUID /proc/sysinfo',
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'30de4fd9-b4d5-409e-86a5-09b387f70bfa')
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# Disable blinking cursor, then write some stuff into the framebuffer.
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# QEMU's PPM screendumps contain uncompressed 24-bit values, while the
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# framebuffer uses 32-bit, so we pad our text with some spaces when
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# writing to the framebuffer. Since the PPM is uncompressed, we then
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# can simply read the written "magic bytes" back from the PPM file to
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# check whether the framebuffer is working as expected.
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# Unfortunately, this test is flaky, so we don't run it by default
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if os.getenv('QEMU_TEST_FLAKY_TESTS'):
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self.log.info("Test screendump of virtio-gpu device")
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exec_command_and_wait_for_pattern(self,
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'while ! (dmesg | grep gpudrmfb) ; do sleep 1 ; done',
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'virtio_gpudrmfb frame buffer device')
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exec_command_and_wait_for_pattern(self,
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r'echo -e "\e[?25l" > /dev/tty0', ':/#')
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exec_command_and_wait_for_pattern(self, 'for ((i=0;i<250;i++)); do '
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'echo " The qu ick fo x j ump s o ver a laz y d og" >> fox.txt;'
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'done',
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':/#')
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exec_command_and_wait_for_pattern(self,
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'dd if=fox.txt of=/dev/fb0 bs=1000 oflag=sync,nocache ; rm fox.txt',
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'12+0 records out')
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with tempfile.NamedTemporaryFile(suffix='.ppm',
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prefix='qemu-scrdump-') as ppmfile:
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self.vm.cmd('screendump', filename=ppmfile.name)
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ppmfile.seek(0)
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line = ppmfile.readline()
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self.assertEqual(line, b"P6\n")
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line = ppmfile.readline()
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self.assertEqual(line, b"1280 800\n")
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line = ppmfile.readline()
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self.assertEqual(line, b"255\n")
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line = ppmfile.readline(256)
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self.assertEqual(line, b"The quick fox jumps over a lazy dog\n")
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else:
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self.log.info("Skipped flaky screendump of virtio-gpu device test")
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# Hot-plug a virtio-crypto device and see whether it gets accepted
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self.log.info("Test hot-plug virtio-crypto device")
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self.clear_guest_dmesg()
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self.vm.cmd('object-add', qom_type='cryptodev-backend-builtin',
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id='cbe0')
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self.vm.cmd('device_add', driver='virtio-crypto-ccw', id='crypdev0',
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cryptodev='cbe0', devno='fe.0.2342')
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exec_command_and_wait_for_pattern(self,
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'while ! (dmesg -c | grep Accelerator.device) ; do'
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' sleep 1 ; done', 'Accelerator device is ready')
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exec_command_and_wait_for_pattern(self, 'lscss', '0.0.2342')
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self.vm.cmd('device_del', id='crypdev0')
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self.vm.cmd('object-del', id='cbe0')
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exec_command_and_wait_for_pattern(self,
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'while ! (dmesg -c | grep Start.virtcrypto_remove) ; do'
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' sleep 1 ; done', 'Start virtcrypto_remove.')
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