mongodump 失败且导致mongo服务挂掉

2017-05-02T17:08:51.663+0800    [############............]  db.abc  91363661/177602822  (51.4%)
2017-05-02T17:08:54.663+0800    [############............]  db.abc  91744632/177602822  (51.7%)
2017-05-02T17:08:57.663+0800    [############............]  db.abc  92279192/177602822  (52.0%)
2017-05-02T17:09:00.663+0800    [############............]  db.abc  92629211/177602822  (52.2%)
2017-05-02T17:09:03.663+0800    [############............]  db.abc  93112828/177602822  (52.4%)
2017-05-02T17:09:05.619+0800    [############............]  db.abc  93288043/177602822  (52.5%)
2017-05-02T17:09:09.823+0800    Failed: error reading collection: EOF
You have mail in /var/spool/mail/admin

[admin@syslog-1.dev.abc-inc.com /abc_log_nas]
$ps aux | grep mongo
admin    30931  0.0  0.0 103244   860 pts/2    S+   17:14   0:00 grep mongo
You have mail in /var/spool/mail/admin

[root@syslog-1.dev.abc-inc.com /home/admin/bin]
#/etc/init.d/mongod status
mongod dead but subsys locked

[root@syslog-1.dev.abc-inc.com /home/admin/bin]
#/etc/init.d/mongod restart
Stopping mongod:                                           [  OK  ]
Starting mongod:                                           [  OK  ]

[root@syslog-1.dev.abc-inc.com /home/admin/bin]
#tail -n 10 /var/spool/mail/admin 
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=admin>
X-Cron-Env: <USER=admin>
Message-Id: <20160601115558.741D2601FD@syslog-1.dev.rokid-inc.com>
Date: Mon, 11 Apr 2016 05:16:11 +0800 (CST)

ssh: Could not resolve hostname syslog-1: Temporary failure in name resolution
rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: unexplained error (code 255) at io.c(600) [receiver=3.0.6]

rsync error: unexplained error (code 255) at io.c(600) [receiver=3.0.6]

rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: unexplained error (code 255) at io.c(600) [receiver=3.0.6]