218 lines
7.1 KiB
Python
218 lines
7.1 KiB
Python
import logging
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import re
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import os
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import subprocess
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import time
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from avocado import skipUnless
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from avocado_qemu import LinuxTest, BUILD_DIR
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from avocado_qemu import has_cmds
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from avocado_qemu import run_cmd
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from avocado_qemu import wait_for_console_pattern
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from avocado.utils import ssh
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class VirtiofsSubmountsTest(LinuxTest):
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"""
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:avocado: tags=arch:x86_64
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:avocado: tags=accel:kvm
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"""
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def run(self, args, ignore_error=False):
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stdout, stderr, ret = run_cmd(args)
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if ret != 0:
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cmdline = ' '.join(args)
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if not ignore_error:
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self.fail(f'{cmdline}: Returned {ret}: {stderr}')
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else:
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self.log.warn(f'{cmdline}: Returned {ret}: {stderr}')
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return (stdout, stderr, ret)
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def set_up_shared_dir(self):
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self.shared_dir = os.path.join(self.workdir, 'virtiofs-shared')
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os.mkdir(self.shared_dir)
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self.run(('cp', self.get_data('guest.sh'),
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os.path.join(self.shared_dir, 'check.sh')))
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self.run(('cp', self.get_data('guest-cleanup.sh'),
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os.path.join(self.shared_dir, 'cleanup.sh')))
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def set_up_virtiofs(self):
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attmp = os.getenv('AVOCADO_TESTS_COMMON_TMPDIR')
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self.vfsdsock = os.path.join(attmp, 'vfsdsock')
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self.run(('sudo', '-n', 'rm', '-f', self.vfsdsock), ignore_error=True)
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self.virtiofsd = \
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subprocess.Popen(('sudo', '-n',
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'tools/virtiofsd/virtiofsd',
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f'--socket-path={self.vfsdsock}',
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'-o', f'source={self.shared_dir}',
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'-o', 'cache=always',
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'-o', 'xattr',
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'-o', 'announce_submounts',
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'-f'),
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stdout=subprocess.DEVNULL,
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stderr=subprocess.PIPE,
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universal_newlines=True)
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while not os.path.exists(self.vfsdsock):
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if self.virtiofsd.poll() is not None:
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self.fail('virtiofsd exited prematurely: ' +
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self.virtiofsd.communicate()[1])
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time.sleep(0.1)
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self.run(('sudo', '-n', 'chmod', 'go+rw', self.vfsdsock))
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self.vm.add_args('-chardev',
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f'socket,id=vfsdsock,path={self.vfsdsock}',
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'-device',
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'vhost-user-fs-pci,queue-size=1024,chardev=vfsdsock' \
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',tag=host',
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'-object',
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'memory-backend-file,id=mem,size=1G,' \
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'mem-path=/dev/shm,share=on',
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'-numa',
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'node,memdev=mem')
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def set_up_nested_mounts(self):
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scratch_dir = os.path.join(self.shared_dir, 'scratch')
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try:
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os.mkdir(scratch_dir)
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except FileExistsError:
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pass
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args = ['bash', self.get_data('host.sh'), scratch_dir]
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if self.seed:
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args += [self.seed]
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out, _, _ = self.run(args)
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seed = re.search(r'^Seed: \d+', out)
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self.log.info(seed[0])
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def mount_in_guest(self):
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self.ssh_command('mkdir -p /mnt/host')
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self.ssh_command('mount -t virtiofs host /mnt/host')
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def check_in_guest(self):
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self.ssh_command('bash /mnt/host/check.sh /mnt/host/scratch/share')
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def live_cleanup(self):
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self.ssh_command('bash /mnt/host/cleanup.sh /mnt/host/scratch')
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# It would be nice if the above was sufficient to make virtiofsd clear
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# all references to the mounted directories (so they can be unmounted
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# on the host), but unfortunately it is not. To do so, we have to
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# resort to a remount.
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self.ssh_command('mount -o remount /mnt/host')
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scratch_dir = os.path.join(self.shared_dir, 'scratch')
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self.run(('bash', self.get_data('cleanup.sh'), scratch_dir))
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@skipUnless(*has_cmds(('sudo -n', ('sudo', '-n', 'true')),
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'ssh-keygen', 'bash', 'losetup', 'mkfs.xfs', 'mount'))
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def setUp(self):
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vmlinuz = self.params.get('vmlinuz')
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if vmlinuz is None:
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"""
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The Linux kernel supports FUSE auto-submounts only as of 5.10.
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boot_linux.py currently provides Fedora 31, whose kernel is too
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old, so this test cannot pass with the on-image kernel (you are
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welcome to try, hence the option to force such a test with
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-p vmlinuz=''). Therefore, for now the user must provide a
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sufficiently new custom kernel, or effectively explicitly
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request failure with -p vmlinuz=''.
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Once an image with a sufficiently new kernel is available
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(probably Fedora 34), we can make -p vmlinuz='' the default, so
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that this parameter no longer needs to be specified.
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"""
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self.cancel('vmlinuz parameter not set; you must point it to a '
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'Linux kernel binary to test (to run this test with ' \
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'the on-image kernel, set it to an empty string)')
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self.seed = self.params.get('seed')
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self.ssh_key = os.path.join(self.workdir, 'id_ed25519')
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self.run(('ssh-keygen', '-N', '', '-t', 'ed25519', '-f', self.ssh_key))
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pubkey = self.ssh_key + '.pub'
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super(VirtiofsSubmountsTest, self).setUp(pubkey)
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if vmlinuz:
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self.vm.add_args('-kernel', vmlinuz,
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'-append', 'console=ttyS0 root=/dev/sda1')
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self.require_accelerator("kvm")
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self.vm.add_args('-accel', 'kvm')
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def tearDown(self):
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try:
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self.vm.shutdown()
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except:
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pass
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scratch_dir = os.path.join(self.shared_dir, 'scratch')
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self.run(('bash', self.get_data('cleanup.sh'), scratch_dir),
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ignore_error=True)
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def test_pre_virtiofsd_set_up(self):
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self.set_up_shared_dir()
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self.set_up_nested_mounts()
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self.set_up_virtiofs()
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self.launch_and_wait()
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self.mount_in_guest()
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self.check_in_guest()
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def test_pre_launch_set_up(self):
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self.set_up_shared_dir()
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self.set_up_virtiofs()
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self.set_up_nested_mounts()
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self.launch_and_wait()
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self.mount_in_guest()
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self.check_in_guest()
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def test_post_launch_set_up(self):
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self.set_up_shared_dir()
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self.set_up_virtiofs()
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self.launch_and_wait()
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self.set_up_nested_mounts()
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self.mount_in_guest()
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self.check_in_guest()
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def test_post_mount_set_up(self):
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self.set_up_shared_dir()
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self.set_up_virtiofs()
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self.launch_and_wait()
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self.mount_in_guest()
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self.set_up_nested_mounts()
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self.check_in_guest()
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def test_two_runs(self):
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self.set_up_shared_dir()
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self.set_up_nested_mounts()
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self.set_up_virtiofs()
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self.launch_and_wait()
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self.mount_in_guest()
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self.check_in_guest()
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self.live_cleanup()
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self.set_up_nested_mounts()
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self.check_in_guest()
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