100%使用11G/40G，怎么可能？

Question

怎么可能有以下的统计: 11G使用超过40G的大小，没有更多的空间可用。现在我无法发送电子邮件，因为我收到了:在发送邮件时发生了错误。邮件服务器响应:写入假脱机文件时出错。请检查邮件，然后再试一次。

root@ip-a-b-c-d [~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/vzfs              40G   11G     0 100% /
none                  512M  4.0K  512M   1% /dev

你能帮我解决这个问题吗？

root@ip-a-b-c-d [~]# df -ih
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/vzfs               8.6M    420K    8.2M    5% /
none                    128K      95    128K    1% /dev

root@ip-a-b-c-d [~]# lsof +L1
COMMAND     PID     USER   FD   TYPE DEVICE SIZE/OFF NLINK    NODE NAME
dovecot   21906     root  111u   REG   0,30        0     0  758435 (deleted) /var/run/dovecot/login-master-notifyd227fbaeb43252e5
dovecot   21906     root  128u   REG   0,30        0     0  758440 (deleted) /var/run/dovecot/login-master-notifyc9b5bae7b2edcb9e
dovecot   21906     root  131u   REG   0,30        0     0  758442 (deleted) /var/run/dovecot/login-master-notify7fc65ebf8eeeaa52
pop3-logi 21914 dovenull    4u   REG   0,30        0     0  758435 (deleted) /var/run/dovecot/login-master-notifyd227fbaeb43252e5
imap-logi 21915 dovenull    4u   REG   0,30        0     0  758442 (deleted) /var/run/dovecot/login-master-notify7fc65ebf8eeeaa52
pop3-logi 21919 dovenull    4u   REG   0,30        0     0  758435 (deleted) /var/run/dovecot/login-master-notifyd227fbaeb43252e5
imap-logi 21920 dovenull    4u   REG   0,30        0     0  758442 (deleted) /var/run/dovecot/login-master-notify7fc65ebf8eeeaa52
httpd     22365     root   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     22373   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     22374   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     22375   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     22376   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     22377   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
httpd     24097   nobody   44w   REG   0,30        0     0 1597059 (deleted) /usr/local/apache/logs/ssl_mutex
mysqld    25732    mysql    4u   REG   0,30        0     0  693076 (deleted) /tmp/ibaGzgNW
mysqld    25732    mysql    5u   REG   0,30        0     0  693077 (deleted) /tmp/ibkJLbId
mysqld    25732    mysql    6u   REG   0,30        0     0  693078 (deleted) /tmp/ib0oe7Cu
mysqld    25732    mysql    7u   REG   0,30        0     0  693079 (deleted) /tmp/ibKOvzu2
mysqld    25732    mysql   11u   REG   0,30        0     0  694204 (deleted) /tmp/ibKKlSrj

Answer 1

如果您删除进程已打开的大型文件(例如，大型日志文件是常见的示例)，则会发生这种情况。如果应用程序不重新打开这些文件，那么旧的文件句柄就会停留在周围，空间将无法回收。

如果您知道您删除了哪个文件以及哪个进程拥有这些文件，则可以尝试重新启动该进程。或者，重新启动服务器，然后空间将被释放。