É a opção sync
que você mostra na sua linha fstab
que está fazendo isso. Este é um problema comum ao usar uma unidade USB externa que usa o usbmount. De /etc/usbmount/usbmount.conf
:
#############################################################################
# WARNING! #
# #
# The "sync" option may not be a good choice to use with flash drives, as #
# it forces a greater amount of writing operating on the drive. This makes #
# the writing speed considerably lower and also leads to a faster wear out #
# of the disk. #
# #
# If you omit it, don't forget to use the command "sync" to synchronize the #
# data on your disk before removing the drive or you may experience data #
# loss. #
# #
# It is highly recommended that you use the pumount command (as a regular #
# user) before unplugging the device. It makes calling the "sync" command #
# and mounting with the sync option unnecessary---this is similar to other #
# operating system's "safely disconnect the device" option. #
#############################################################################
Portanto, basta remover a opção sync
de fstab
ou alterá-la para async
. Se você estiver fazendo hotplug, altere a seguinte linha em que /etc/usbmount/usbmount.conf
from:
MOUNTOPTIONS="sync,noexec,nodev,noatime,nodiratime"
para
MOUNTOPTIONS="noexec,nodev,noatime,nodiratime"
E não se esqueça de desmontar seu disco com segurança antes de desconectá-lo.