Leaking file descriptors What does it mean if file descriptor leaking 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 What does it mean?

Those are file descriptors left open on the device (which you were resizing).

lvm(8) says:


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.