Linux boot problems

For more information about linux boot-Linux general technology-Linux technology and application, see the following. After the Ubuntu system is turned on, it is stuck in the stopping mount network filesystems stage. no adverse operations were performed before the last shutdown, and the method for reinstalling the Ubuntu desktop on the Internet is invalid, commands cannot be used. please do not reinstall the system for restoration. There are many important materials in the system.
The logon log file is as follows:
Fsck from util-linux 2.20.1
Fsck from util-linux 2.20.1
/Dev/sda10: clean, 386302/2626560 files, 2696709/10485760 blocks
/Dev/sda9: clean, 164560/5242880 files, 2981395/20971008 blocks
* Starting Bridge socket events into upstart [74G [OK]
Skipping profile in/etc/apparmor. d/disable: usr. bin. firefox
Skipping profile in/etc/apparmor. d/disable: usr. sbin. rsyslogd
* Starting AppArmor profiles [80G
[74G [OK]
SpamAssassin Mail Filter Daemon: disabled, see/etc/default/spamassassin
* Stopping System V initialisation compatibility [74G [OK]
* Starting network connection manager [74G [OK]
* Starting mDNS/DNS-SD daemon [74G [OK]
* Starting System V runlevel compatibility [74G [OK]
* Starting [74G [OK]
* Starting [74G [OK]
* Starting ACPI daemon [74G [OK]
* Starting anac (h) ronistic cron [74G [OK]
* Starting [74G [OK]
* Starting [74G [OK]
* Starting save kernel messages [74G [OK]
* Starting [74G [OK]
* Starting configure network device security [74G [OK]
* Starting Reload cups, upon starting avahi-daemon to make sure remote queues are populated [74G [OK]
* Starting cups-browsed-Bonjour remote printer browsing daemon [74G [OK]
* Starting bluetooth daemon [74G [OK]
* Starting configure virtual network devices [74G [OK]
* Starting set console font [74G [OK]
* Starting automatic crash report generation [74G [OK]
* Starting Reload cups, upon starting avahi-daemon to make sure remote queues are populated [74G [[31 mfail [39; 49 m]
* Stopping set console font [74G [OK]
* Starting userspace bootsplash [74G [OK]
* Starting [74G [OK]
* Starting Send an event to indicate plymouth Uth is up [74G [OK]
* Starting [74G [OK]
* Starting [74G [OK]
* Starting GNOME Display Manager [74G [OK]
* Starting CPU interrupts balancing daemon [74G [OK]
* Starting regular background program processing daemon [74G [OK]
* Stopping [74G [OK]
* Stopping anac (h) ronistic cron [74G [OK]
* Stopping save kernel messages [74G [OK]
* Stopping [74G [OK]
* Stopping Send an event to indicate plymouth Uth is up [74G [OK]
* Starting GNOME Display Manager [74G [31 mfail [39; 49 m]
* Starting crash report submission daemon [74G [OK]
* Starting CUPS printing spooler/server [74G [OK]
* Stopping cold plug devices [74G [OK]
* Stopping log initial device creation [74G [OK]
* Starting save udev log and update rules [74G [OK]
* Stopping save udev log and update rules [74G [OK]
* Stopping userspace bootsplash [74G [OK]
* Starting Postfix Mail Transport Agent postfix [170G
[164 GB [OK]
Speech-dispatcher disabled; edit/etc/default/speech-dispatcher
Saned disabled; edit/etc/default/saned
* Starting Adaptive readahead daemon preload [170G
[164 GB [OK]
* Starting anac (h) ronistic cron [74G [OK]
* Stopping anac (h) ronistic cron [74G [OK]
* Checking battery state... [170G
[164 GB [OK]
* Stopping System V runlevel compatibility [74G [OK]
* Starting [74G [OK]
* Stopping LightDM Display Manager [74G [OK]
* Stopping TeamViewer remote control daemon [74G [OK]
* Starting Mount network filesystems [74G [OK]
* Stopping Mount network filesystems [74G [OK]
* Starting Mount network filesystems [74G [OK]
* Stopping Mount network filesystems [74G [OK]
Acpid: exiting

* Stopping Bridge file events into upstart [74G [OK]
* Stopping device node and kernel event manager [74G [OK]
* Stopping system logging daemon [74G [OK]
* Stopping Bridge socket events into upstart [74G [OK]
* Stopping [74G [OK]
* Stopping [74G [OK]
* Stopping [74G [OK]
* Stopping [74G [OK]
* Stopping [74G [OK]
* Stopping ACPI daemon [74G [OK]
* Stopping cups-browsed-Bonjour remote printer browsing daemon [74G [OK]
* Stopping CPU interrupts balancing daemon [74G [OK]
* Stopping regular background program processing daemon [74G [OK]
* Stopping crash report submission daemon [74G [OK]
* Stopping [74G [OK]
* Stopping automatic crash report generation [74G [OK]
* Stopping Initialize or finalize resolvconf [74G [OK]
* Starting System V runlevel compatibility [74G [OK]
* Starting save system clock to hardware clock [74G [OK]
* Stopping Bridge udev events into upstart [74G [OK]
* Stopping save system clock to hardware clock [74G [OK]
* Stopping Adaptive readahead daemon preload [170G
[164 GB [OK]
* Stopping CUPS printing spooler/server [74G [OK]
* Stopping Postfix Mail Transport Agent postfix [170G
[164 GB [OK]
Speech-dispatcher disabled; edit/etc/default/speech-dispatcher
SpamAssassin Mail Filter Daemon: disabled, see/etc/default/spamassassin
* Asking all remaining processes to terminate... [170G
[164 GB [OK]
* All processes ended within 1 seconds... [170G
[164 GB [OK]
* Stopping mDNS/DNS-SD daemon [74G [OK]
* Stopping bluetooth daemon [74G [OK]
Nm-dispatcher.action: Caught signal 15, shutting down...

Modem-manager [2, 1308]: Caught signal 15, shutting down...


* Stopping network connection manager [74G [OK]
* Stopping configure network device security [74G [OK]
* Stopping modem connection manager [74G [OK]
* Deactivating swap... [170G
[164 GB [OK]
* Unmounting local filesystems... [170G
[164 GB [OK]
Umount:/run/lock: not mounted
Umount:/run/shm: not mounted
Mount:/is busy
* Will now halt