解决umount target is busy,input/output error

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重新挂载一次

sudo mkdir /mnt/mydisk
sudo mount /dev/sda9 /mnt/mydisk
sudo umount /dev/sda9
以上 通用于ext2, ext4

[root@test01 mnt]# vim /etc/profile.d/autologout.sh

TMOUT=10
readonly TMOUT
export TMOUT

加上执行权限

[root@test01 mnt]# chmod +x /etc/profile.d/autologout.sh

重启系统:reboot

无效要删除掉脚本 执行第一种方法

Same issue. Let's see if dmesg tells us something useful:

dmesg 
[116836.420063] EXT4-fs error (device dm-5): ext4_lookup: deleted inode referenced: 24274320 
[116842.656399] EXT4-fs error (device dm-5): ext4_lookup: deleted inode referenced: 24400033 
[116842.574064] EXT4-fs error (device dm-5): ext4_lookup: deleted inode referenced: 24273584 

umount /backup 

fsck.ext4 /dev/mapper/vg0-backup 
e2fsck 1.41.12 (17-May-2010) 
/dev/mapper/vg0-backup contains a file system with errors, check forced. 
Pass 1: Checking inodes, blocks, and sizes 
Pass 2: Checking directory structure 

Entry '1360095843,S=4225,W=4321:2,S' in /rsnapshot/daily.9/localhost/home/mail/web98p8/Maildir/cur (8674221) has deleted/unused inode 24274320.  Clear? yes 

Entry '2' in /rsnapshot/daily.9/localhost/var/www/web136/files/g2data/cache/entity/3 (24400027) has deleted/unused inode 24400033.  Clear? yes 

Entry '1359872706,S=12695,W=12855:2,S' in /rsnapshot/daily.9/localhost/home/mail/web98p1/Maildir/cur (8671256) has deleted/unused inode 24273584.  Clear? yes

Pass 3: Checking directory connectivity 

Pass 4: Checking reference counts 
Inode 939825 ref count is 10, should be 9.  Fix? yes 
Inode 939826 ref count is 10, should be 9.  Fix? yes 
Inode 939827 ref count is 10, should be 9.  Fix? yes 
Inode 939843 ref count is 10, should be 9.  Fix? yes

Pass 5: Checking group summary information 
Block bitmap differences:  -(97030728--97030731) -(97033838--97033839) -97529271 
Fix? yes 

Free blocks count wrong for group #2961 (3626, counted=3632). 
Fix? yes 

Free blocks count wrong for group #2976 (8930, counted=8931). 
Fix? yes 

Free blocks count wrong (50341877, counted=50341884). 
Fix? yes 

Inode bitmap differences:  -24273584 -24274320 -24400033 
Fix? yes 

Free inodes count wrong for group #2963 (2017, counted=2019). 
Fix? yes 

Free inodes count wrong for group #2978 (3021, counted=3022). 
Fix? yes 

Directories count wrong for group #2978 (4051, counted=4050). 
Fix? yes 

Free inodes count wrong (26902779, counted=26902782). 
Fix? yes 

/dev/mapper/vg0-backup: ***** FILE SYSTEM WAS MODIFIED ***** 
/dev/mapper/vg0-backup: 5865218/32768000 files (0.1% non-contiguous), 80730116/131072000 blocks 

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