这个系统邮件是什么意思？ This email was generated by the smartd daemon running on:
host name: xxxxx.burst.net
DNS domain: burst.net
NIS domain: (none)
The following warning/error was logged by the smartd daemon:
Device: /dev/sda, 77 Currently unreadable (pending) sectors
For details see host's SYSLOG (default: /var/log/messages).
You can also use the smartctl utility for further investigation.
No additional email messages about this problem will be sent.
