It seems the cause for my issue was the nfs-kernel-server was exporting the directory. The nfs-kernel-server probably goes behind the normal open files and ... ... <看更多>

umount (8) -- mount a filesystem. *. * Copyright (C) 2011 Red Hat, Inc. All rights reserved. * Written by Karel Zak <[email protected]>. ... <看更多>

From man mount : RETURN CODES mount has the following return codes (the bits can be ORed): 0 success 1 incorrect invocation or permissions 2 ... ... <看更多>

... <看更多>