How to use unmount_force method in autotest

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...24 @abc.abstractmethod25 def unmount_lazy(self, mount_point: bytes) -> bool:26 "Corresponds to `umount -l` on Linux."27 @abc.abstractmethod28 def unmount_force(self, mount_point: bytes) -> bool:29 "Corresponds to `umount -f` on Linux."30 def lstat(self, path: Union[bytes, str]) -> MTStat:31 "Returns a subset of the results of os.lstat."32 st = os.lstat(path)33 return MTStat(st_uid=st.st_uid, st_dev=st.st_dev, st_mode=st.st_mode)34 def check_path_access(self, path: bytes) -> None:35 """\36 Attempts to stat the given directory, bypassing the kernel's caches.37 Raises OSError upon failure.38 """39 # Even if the FUSE process is shut down, the lstat call will succeed if40 # the stat result is cached. Append a random string to avoid that. In a41 # better world, this code would bypass the cache by opening a handle42 # with O_DIRECT, but Eden does not support O_DIRECT.43 try:44 os.lstat(os.path.join(path, hex(random.getrandbits(32))[2:].encode()))45 except OSError as e:46 if e.errno == errno.ENOENT:47 return48 raise49 @abc.abstractmethod50 def create_bind_mount(self, source_path, dest_path) -> bool:51 "Creates a bind mount from source_path to dest_path."52def parse_mtab(contents: bytes) -> List[MountInfo]:53 mounts = []54 for line in contents.splitlines():55 # columns split by space or tab per man page56 entries = line.split()57 if len(entries) != 6:58 log.warning(f"mount table line has {len(entries)} entries instead of 6")59 continue60 device, mount_point, vfstype, opts, freq, passno = entries61 mounts.append(62 MountInfo(device=device, mount_point=mount_point, vfstype=vfstype)63 )64 return mounts65class LinuxMountTable(MountTable):66 def read(self) -> List[MountInfo]:67 # What's the most portable mtab path? I've seen both /etc/mtab and68 # /proc/self/mounts. CentOS 6 in particular does not symlink /etc/mtab69 # to /proc/self/mounts so go directly to /proc/self/mounts.70 # This code could eventually fall back to /proc/mounts and /etc/mtab.71 with open("/proc/self/mounts", "rb") as f:72 return parse_mtab( def unmount_lazy(self, mount_point: bytes) -> bool:74 # MNT_DETACH75 return 0 ==["sudo", "umount", "-l", mount_point])76 def unmount_force(self, mount_point: bytes) -> bool:77 # MNT_FORCE78 return 0 ==["sudo", "umount", "-f", mount_point])79 def create_bind_mount(self, source_path, dest_path) -> bool:80 return 0 == subprocess.check_call(81 ["sudo", "mount", "-o", "bind", source_path, dest_path]82 )83def parse_macos_mount_output(contents: bytes) -> List[MountInfo]:84 mounts = []85 for line in contents.splitlines():86 m = re.match(b"^(\\S+) on (.+) \\(([^,]+),.*\\)$", line)87 if m:88 mounts.append(89 MountInfo(,, )91 return mounts92class MacOSMountTable(MountTable):93 def read(self) -> List[MountInfo]:94 # Specifying the path is important, as sudo may have munged the path95 # such that /sbin is not part of it any longer96 contents = subprocess.check_output(["/sbin/mount"])97 return parse_macos_mount_output(contents)98 def unmount_lazy(self, mount_point: bytes) -> bool:99 return False100 def unmount_force(self, mount_point: bytes) -> bool:101 return False102 def create_bind_mount(self, source_path, dest_path) -> bool:103 return False104class NopMountTable(MountTable):105 def read(self) -> List[MountInfo]:106 return []107 def unmount_lazy(self, mount_point: bytes) -> bool:108 return False109 def unmount_force(self, mount_point: bytes) -> bool:110 return False111 def create_bind_mount(self, source_path, dest_path) -> bool:112 return False113def new() -> MountTable:114 if "linux" in sys.platform:115 return LinuxMountTable()116 if sys.platform == "darwin":117 return MacOSMountTable()...

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1from enum import Enum2from collections import namedtuple3# This is a surprising technique that is not an obvious extension to the language4class fe_fstype(namedtuple("fe_fstype", "id name"), Enum):5 EP_FE_GENERIC = 8, "generic"6 EP_FE_NFS = 9, "fe_nfs"7 EP_FE_ISCSI = 10, "fe_iscsi"8 EP_FE_CIFS = 24, "fe_cifs"9 EP_FE_NFS4 = 25, "fe_nfs4"10 EP_FE_CIFSipv6 = 26, "fe_cifs/ip6"11 EP_FE_NFSipv6 = 27, "fe_nfs/ip6"12 EP_FE_NFS4ipv6 = 28, "fe_nfs4/ip6"13 EP_FE_SMB2 = 29, "fe_smb2"14 EP_FE_SMB2ipv6 = 30, "fe_smb2/ip6"15 EP_FE_SMB21 = 35, "fe_smb21"16 EP_FE_SMB21ipv6 = 36, "fe_smb21/ip6"17 EP_FE_SMB30 = 37, "fe_smb30"18 EP_FE_SMB30ipv6 = 38, "fe_smb30/ip6"19 20class fe_payload_list(Enum):21 increasing = 1 # bytes start at 00 and increase, wrapping if needed.22 decreasing = 2 # bytes start at FF and decrease, wrapping if needed.23 random = 3 # generate a new random payload each time sent.24 25 random_fixed = 4 # Means generate one random payload, and send it over26 # and over again.27 28 zeros = 5 # Payload is all zeros (00).29 ones = 6 # Payload is all ones (FF).30 31 PRBS_4_0_3 = 7 # Use linear feedback shift register to generate pseudo random sequence.32 # First number is bit-length of register, second two are TAPS (zero-based indexs)33 # Seed value is always 1.34 35 PRBS_7_0_6 = 8 # PRBS (see above)36 PRBS_11_8_10 = 9 # PRBS (see above)37 PRBS_15_0_14 = 10 # PRBS (see above)38 custom = 11 # Enter your own payload with the set_endp_payload cmd.39 40class fe_fio_flags(Enum):41 CHECK_MOUNT = 0x1, # (1) Attempt to verify NFS and SMB mounts match the configured values.42 AUTO_MOUNT = 0x2, # (2) Attempt to mount with the provided information if not already mounted.43 AUTO_UNMOUNT = 0x4, # (4) Attempt to un-mount when stopping test.44 O_DIRECT = 0x8, # (8) Open file with O_DIRECT flag, disables caching. Must use block-size read/write calls.45 UNLINK_BW = 0x10, # (16) Unlink file before writing. This works around issues with CIFS for some file-servers.46 O_LARGEFILE = 0x20, # (32) Open files with O_LARGEFILE. This allows greater than 2GB files on 32-bit systems.47 UNMOUNT_FORCE = 0x40, # (64) Use -f flag when calling umount48 UNMOUNT_LAZY = 0x80, # (128) Use -l flag when calling umount49 USE_FSTATFS = 0x100, # (256) Use fstatfs system call to verify file-system type when opening files.50 # This can take a bit of time on some file systems, but it can be used51 # to detect un-expected file-system unmounts and such.52 53 O_APPEND = 0x200 # (512) Open files for writing with O_APPEND instead54 # of O_TRUNC. This will cause files to grow ever larger.55 56 # base_endpoint_types cribbed from BaseEndpoint.java57 # we are unlikely to need this dictionary58class fe_base_endpoint_types(Enum):59 EP_FE_GENERIC = 860 EP_FE_NFS = 961 EP_FE_ISCSI = 1062 EP_FE_CIFS = 2463 EP_FE_NFS4 = 2564 EP_FE_CIFS6 = 2665 EP_FE_NFS6 = 2766 EP_FE_NFS46 = 2867 EP_FE_SMB2 = 2968 EP_FE_SMB26 = 3069 EP_FE_SMB21 = 3570 EP_FE_SMB216 = 3671 EP_FE_SMB30 = 37...

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