我在 Windows 8.1 上运行 Oracle VirtualBox 4.3.10，里面运行的是 CentOS 6.5。我的 Windows 机器上通过 SMB 挂载了一个 /windows。通常我使用 /vagrant vboxfs 文件系统，但当我尝试查看 /windows 目录时，它会锁定我的 shell。我无法使用 ^C、^Z，也无法从 Putty 发送 SIGKILL 或任何其他信号。
[vagrant@localhost BK-Development]$ mount
/dev/mapper/VolGroup-lv_root on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda1 on /boot type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
//10.0.2.2/aidc on /windows type cifs (rw)
/vagrant on /vagrant type vboxsf (uid=500,gid=500,rw)
这是 ls 的 strace。
[vagrant@localhost ~]$ strace ls /windows
execve("/bin/ls", ["ls", "/windows"], [/* 39 vars */]) = 0
brk(0) = 0x857000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd79000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=39412, ...}) = 0
mmap(NULL, 39412, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f63abd6f000
close(3) = 0
open("/lib64/libselinux.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0PX\200\270>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=124624, ...}) = 0
mmap(0x3eb8800000, 2221912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3eb8800000
mprotect(0x3eb881d000, 2093056, PROT_NONE) = 0
mmap(0x3eb8a1c000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0x3eb8a1c000
mmap(0x3eb8a1e000, 1880, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3eb8a1e000
close(3) = 0
open("/lib64/librt.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@!\0\270>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47064, ...}) = 0
mmap(0x3eb8000000, 2128816, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3eb8000000
mprotect(0x3eb8007000, 2093056, PROT_NONE) = 0
mmap(0x3eb8206000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x3eb8206000
close(3) = 0
open("/lib64/libcap.so.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\23@\275>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=19016, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd6e000
mmap(0x3ebd400000, 2111776, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3ebd400000
mprotect(0x3ebd404000, 2093056, PROT_NONE) = 0
mmap(0x3ebd603000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x3ebd603000
close(3) = 0
open("/lib64/libacl.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\36\300\273>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=33816, ...}) = 0
mmap(0x3ebbc00000, 2126416, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3ebbc00000
mprotect(0x3ebbc07000, 2093056, PROT_NONE) = 0
mmap(0x3ebbe06000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x3ebbe06000
close(3) = 0
open("/lib64/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\356A\267>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1926800, ...}) = 0
mmap(0x3eb7400000, 3750152, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3eb7400000
mprotect(0x3eb758b000, 2093056, PROT_NONE) = 0
mmap(0x3eb778a000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18a000) = 0x3eb778a000
mmap(0x3eb778f000, 18696, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3eb778f000
close(3) = 0
open("/lib64/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\r\300\267>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=22536, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd6d000
mmap(0x3eb7c00000, 2109696, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3eb7c00000
mprotect(0x3eb7c02000, 2097152, PROT_NONE) = 0
mmap(0x3eb7e02000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x3eb7e02000
close(3) = 0
open("/lib64/libpthread.so.0", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340]\200\267>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=145896, ...}) = 0
mmap(0x3eb7800000, 2212848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3eb7800000
mprotect(0x3eb7817000, 2097152, PROT_NONE) = 0
mmap(0x3eb7a17000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x3eb7a17000
mmap(0x3eb7a19000, 13296, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3eb7a19000
close(3) = 0
open("/lib64/libattr.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\23\200\273>\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=21152, ...}) = 0
mmap(0x3ebb800000, 2113888, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3ebb800000
mprotect(0x3ebb804000, 2093056, PROT_NONE) = 0
mmap(0x3ebba03000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x3ebba03000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd6c000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd6a000
arch_prctl(ARCH_SET_FS, 0x7f63abd6a7a0) = 0
mprotect(0x3eb8a1c000, 4096, PROT_READ) = 0
mprotect(0x3eb8206000, 4096, PROT_READ) = 0
mprotect(0x3ebbe06000, 4096, PROT_READ) = 0
mprotect(0x3eb778a000, 16384, PROT_READ) = 0
mprotect(0x3eb7e02000, 4096, PROT_READ) = 0
mprotect(0x3eb6e1f000, 4096, PROT_READ) = 0
mprotect(0x3eb7a17000, 4096, PROT_READ) = 0
mprotect(0x3ebba03000, 4096, PROT_READ) = 0
munmap(0x7f63abd6f000, 39412) = 0
set_tid_address(0x7f63abd6aa70) = 20555
set_robust_list(0x7f63abd6aa80, 0x18) = 0
futex(0x7fff8e671fec, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fff8e671fec, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f63abd6a7a0) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigaction(SIGRTMIN, {0x3eb7805c60, [], SA_RESTORER|SA_SIGINFO, 0x3eb780f710}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x3eb7805cf0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x3eb780f710}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=10240*1024, rlim_max=RLIM_INFINITY}) = 0
statfs("/selinux", {f_type="EXT2_SUPER_MAGIC", f_bsize=4096, f_blocks=2242612, f_bfree=557842, f_bavail=443922, f_files=570080, f_ffree=265231, f_fsid={1226513072, 1470288141}, f_namelen=255, f_frsize=4096}) = 0
brk(0) = 0x857000
brk(0x878000) = 0x878000
open("/proc/filesystems", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f63abd78000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tb"..., 1024) = 328
read(3, "", 1024) = 0
close(3) = 0
munmap(0x7f63abd78000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=99158576, ...}) = 0
mmap(NULL, 99158576, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f63a5ed9000
close(3) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=46, ws_col=142, ws_xpixel=0, ws_ypixel=0}) = 0
stat("/windows",
这就是它被锁定的地方。这是完整版本。
[vagrant@localhost BK-Development]$ uname -a
Linux localhost.localdomain 2.6.32-431.11.2.el6.x86_64 #1 SMP Tue Mar 25 19:59:55 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
答案1
我在 Windows 7 上遇到了同样的问题。Windows 会切断被视为不活动的连接，例如没有打开文件句柄的连接。
Linux VM 锁定，因为 CIFS 驱动程序不喜欢断开连接并且无法恢复。
它会影响进程，因为它们处于中断状态，等待 CIFS 文件系统驱动程序返回，但驱动程序永远不会返回。您无法终止它们，因为要终止它们需要发送中断信号，但它们在等待驱动程序时已经处于中断状态。更多详细信息请点击此处。
您可以通过关闭 Windows 中的自动断开连接功能来防止出现此问题，这对我很有用。只需在命令提示符中运行：
net config server /autodisconnect:-1