无法修改linux密码Authentication token manipul..

时间：2010-04-15 来源：olivenan

同事修改linux root密码时出现错误passwd: Authentication token manipulation error
发生该错误原因是： 1、分区没有空间导致。 2、/etc/passwd 和/etc/shadow不同步但是这次上面两条却行不通，通过df查看根分区还有40%剩余。 1、尝试修改密码，出现错误 # passwd
Changing password for user root.
New UNIX password:
BAD PASSWORD: it is WAY too short
Retype new UNIX password:
passwd: Authentication token manipulation error 2、同步/etc/passwd 和/etc/shadow出错
#pwconv
pwconv: can't lock passwd file 3、看权限没有异常，也没有进程锁定该文件
# ll /etc/passwd
-rwxr--r-- 1 root root 2752 Dec 31 17:29 /etc/passwd
# fuser -u /etc/passwd
# lsof |grep passwd 4、cp lock文件出错，提示空间不足 # cp /tmp/.pwd.lock /etc/
cp: cannot create regular file `/etc/.pwd.lock': No space left on device 5、上面的错误惊醒了我，查看确实是inode满了，删除无用的文件
#df -i
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/sda5            2562240 2562240       0 100% /
/dev/sda1              50200      47   50153    1% /boot
/dev/sda2            51300000      12 51299988    1% /data/cache1
/dev/sdb1            51300000 7080311 44219689   14% /data/cache2
/dev/sdb2            9863168      11 9863157    1% /data/proclog
none                  215907       1 215906    1% /dev/shm
/dev/sda3            3842720 305795 3536925    8% /usr
/dev/sda7            3162112    7893 3154219    1% /var
6、再次修改密码仍然出错，于是尝试修改/etc/passwd也出现错误 # chmod 777 /etc/passwd
chmod: changing permissions of `/etc/passwd': Operation not permitted
7、执行chattr
#chattr -i /etc/passwd
# lsattr -v /etc/passwd
2095582053 ------------- /etc/passwd # chattr -i /etc/shadow 8、同步文件
pwconv 9、成功修改密码
passwd
Changing password for user root.
New UNIX password:
BAD PASSWORD: it is WAY too short
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
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