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  • umount /dev/shm


    [root@test ~]# umount /dev/shm
    umount: /dev/shm: device is busy.
            (In some cases useful info about processes that use
             the device is found by lsof(8) or fuser(1))
    [root@test ~]#  lsof |grep /dev/shm
    gnome-set  2140      root  mem       REG               0,15  67108904      14588 /dev/shm/pulse-shm-2262568528
    gnome-vol  2205      root  mem       REG               0,15  67108904      15465 /dev/shm/pulse-shm-1929015898
    pulseaudi  2231      root  mem       REG               0,15  67108904      15478 /dev/shm/pulse-shm-1569886742
    [root@test ~]#  kill -9 2140
    [root@test ~]#  lsof |grep /dev/shm
    gnome-vol  2205      root  mem       REG               0,15  67108904      15465 /dev/shm/pulse-shm-1929015898
    pulseaudi  2231      root  mem       REG               0,15  67108904      15478 /dev/shm/pulse-shm-1569886742
    [root@test ~]# kill -9 2205
    [root@test ~]#  lsof |grep /dev/shm
    pulseaudi  2231      root  mem       REG               0,15  67108904      15478 /dev/shm/pulse-shm-1569886742
    [root@test ~]# kill -9 2231
    [root@test ~]# umount /dev/shm
    [root@test ~]# df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/mapper/vg_test-lv_root
                           18G   12G  4.6G  73% /
    /dev/sda1             477M   33M  419M   8% /boot

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  • 原文地址:https://www.cnblogs.com/wangqianqiannb/p/5368724.html
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