linux – CentOS 7：df开始挂起

概述df无法返回任何输出,只是挂起. 一年多来,fstab没有变化.没有网络驱动器. *** 作系统：CentOS 7.0 strace df的输出： execve("/usr/bin/df", ["df"], [/* 22 vars */]) = 0brk(NULL) = 0x1499000mmap(NULL, 4096, PROT_READ df无法返回任何输出,只是挂起.
一年多来,fstab没有变化.没有网络驱动器.

*** 作系统：CentOS 7.0

strace df的输出：

execve("/usr/bin/df",["df"],[/* 22 vars */]) = 0brk(NulL)                               = 0x1499000mmap(NulL,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x7f628668f000access("/etc/ld.so.preload",R_OK)      = -1 ENOENT (No such file or directory)open("/etc/ld.so.cache",O_RDONLY|O_CLOEXEC) = 3fstat(3,{st_mode=S_IFREG|0644,st_size=45250,...}) = 0mmap(NulL,45250,PROT_READ,MAP_PRIVATE,3,0) = 0x7f6286683000close(3)                                = 0open("/lib64/libc.so.6",O_RDONLY|O_CLOEXEC) = 3read(3,"7ELF
/dev/xvda1              /                       ext4     defaults,noatime 1 1/swapfile   swap    swap    sw  0   0
systemctl restart proc-sys-fs-binfmt_misc.mount
>P%"...,832) = 832fstat(3,{st_mode=S_IFREG|0755,st_size=2173512,3981792,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_DENYWRITE,0) = 0x7f62860a2000mprotect(0x7f6286265000,2093056,PROT_NONE) = 0mmap(0x7f6286464000,24576,MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE,0x1c2000) = 0x7f6286464000mmap(0x7f628646a000,16864,MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,0) = 0x7f628646a000close(3)                                = 0mmap(NulL,0) = 0x7f6286682000mmap(NulL,8192,0) = 0x7f6286680000arch_prctl(ARCH_SET_FS,0x7f6286680740) = 0mprotect(0x7f6286464000,16384,PROT_READ) = 0mprotect(0x616000,PROT_READ)     = 0mprotect(0x7f6286690000,PROT_READ) = 0munmap(0x7f6286683000,45250)           = 0brk(NulL)                               = 0x1499000brk(0x14ba000)                          = 0x14ba000brk(NulL)                               = 0x14ba000open("/usr/lib/locale/locale-archive",st_size=106070960,106070960,0) = 0x7f627fb79000close(3)                                = 0open("/usr/share/locale/locale.alias",st_size=2502,0) = 0x7f628668e000read(3,"# Locale name alias data base.\n#"...,4096) = 2502read(3,"",4096)                       = 0close(3)                                = 0munmap(0x7f628668e000,4096)            = 0open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/usr/share/locale/en_US.utf8/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/usr/share/locale/en_US/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/usr/share/locale/en.UTF-8/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/usr/share/locale/en.utf8/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo",O_RDONLY) = -1 ENOENT (No such file or directory)open("/etc/mtab",O_RDONLY|O_CLOEXEC)   = 3fstat(3,{st_mode=S_IFREG|0444,st_size=0,"rootfs / rootfs rw 0 0\nsysfs /sy"...,1024) = 1024read(3,"oexec,relatime,memory 0 0\ncgroup"...,"rw,nosuID,nodev,size=14"...,1024) = 167read(3,1024)                       = 0close(3)                                = 0munmap(0x7f628668e000,4096)            = 0stat("/",{st_mode=S_IFDIR|0555,st_size=4096,...}) = 0stat("/sys",...}) = 0stat("/proc",...}) = 0stat("/dev",{st_mode=S_IFDIR|0755,st_size=2780,...}) = 0stat("/sys/kernel/security",...}) = 0stat("/dev/shm",{st_mode=S_IFDIR|S_ISVTX|0777,st_size=40,...}) = 0stat("/dev/pts",...}) = 0stat("/run",st_size=1100,...}) = 0stat("/sys/fs/cgroup",st_size=340,...}) = 0stat("/sys/fs/cgroup/systemd",...}) = 0stat("/sys/fs/pstore",...}) = 0stat("/sys/fs/cgroup/devices",...}) = 0stat("/sys/fs/cgroup/pIDs",...}) = 0stat("/sys/fs/cgroup/cpu,cpuacct",...}) = 0stat("/sys/fs/cgroup/memory",...}) = 0stat("/sys/fs/cgroup/hugetlb",...}) = 0stat("/sys/fs/cgroup/freezer",...}) = 0stat("/sys/fs/cgroup/blkio",...}) = 0stat("/sys/fs/cgroup/perf_event",...}) = 0stat("/sys/fs/cgroup/cpuset",...}) = 0stat("/sys/fs/cgroup/net_cls,net_prio",...}) = 0stat("/sys/kernel/config",...}) = 0stat("/",...}) = 0stat("/proc/sys/fs/binfmt_misc",

fstab文件：

解决方法 7.5升级后,在几台服务器上开始出现此问题.快速重启将解决问题,但我无法负担重启生产主机,经过数小时的故障排除后,为我修复了它. 总结

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