泄漏文件描述符

如果文件描述符泄漏是什么意思

 File descriptor 6 (socket:[901758]) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 9 (/dev/pts/1) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 11 (/dev/pts/1) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 12 (/dev/pts/1) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 15 (/dev/pts/7) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 17 (/dev/pts/7) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
 File descriptor 18 (/dev/pts/7) leaked on lvextend invocation. Parent PID 10035: /bin/zsh
   Extending logical volume usr to 30.00 GiB
   Logical volume usr successfully resized

这是什么意思？

shell lvm

— 麦琪（Maciej Piechotka）
source

这些是在设备上打开的文件描述符（您正在调整大小）。

lvm（8）说：

On invocation, lvm requires that only the standard file descriptors stdin, stdout
and stderr are available. If others are found, they get closed and messages
are issued warning about the leak.

— 摇摆
source

不，不是。这些是传递给lvm命令的打开文件描述符。由于某些原因，有人决定在这里提供帮助。

— Simon Richter

对于正在寻找如何抑制此消息的任何人 This warning can be suppressed by setting the environment variable LVM_SUPPRESS_FD_WARNINGS

— edoput '16

我不明白为什么答案不正确。通常，文件系统传递给lvm命令，而不是文件...

— MUY比利时

如edoput所说：export LVM_SUPPRESS_FD_WARNINGS=1

— user3804598