Error in LogWatch & run-parts /etc/cron.daily

In the LogWatch email for my server I am getting following messages, can someone tell me what does this means?


--------------------- Kernel Begin ------------------------


WARNING: Kernel Errors Present
end_request: I/O error, dev nbd0, secto...: 2 Time(s)
end_request: I/O error, dev nbd1, secto...: 2 Time(s)
end_request: I/O error, dev nbd10, sect...: 2 Time(s)
end_request: I/O error, dev nbd11, sect...: 2 Time(s)
end_request: I/O error, dev nbd12, sect...: 2 Time(s)
end_request: I/O error, dev nbd13, sect...: 2 Time(s)
end_request: I/O error, dev nbd14, sect...: 2 Time(s)
end_request: I/O error, dev nbd15, sect...: 2 Time(s)
end_request: I/O error, dev nbd16, sect...: 2 Time(s)
end_request: I/O error, dev nbd17, sect...: 2 Time(s)
end_request: I/O error, dev nbd18, sect...: 2 Time(s)
end_request: I/O error, dev nbd19, sect...: 2 Time(s)
end_request: I/O error, dev nbd2, secto...: 2 Time(s)
end_request: I/O error, dev nbd20, sect...: 2 Time(s)
end_request: I/O error, dev nbd21, sect...: 2 Time(s)
end_request: I/O error, dev nbd22, sect...: 2 Time(s)
end_request: I/O error, dev nbd23, sect...: 2 Time(s)
end_request: I/O error, dev nbd24, sect...: 2 Time(s)
end_request: I/O error, dev nbd25, sect...: 2 Time(s)
end_request: I/O error, dev nbd26, sect...: 2 Time(s)
end_request: I/O error, dev nbd27, sect...: 2 Time(s)
end_request: I/O error, dev nbd28, sect...: 2 Time(s)
end_request: I/O error, dev nbd29, sect...: 2 Time(s)
end_request: I/O error, dev nbd3, secto...: 2 Time(s)
end_request: I/O error, dev nbd30, sect...: 2 Time(s)
end_request: I/O error, dev nbd31, sect...: 2 Time(s)
end_request: I/O error, dev nbd4, secto...: 2 Time(s)
end_request: I/O error, dev nbd5, secto...: 2 Time(s)
end_request: I/O error, dev nbd6, secto...: 2 Time(s)
end_request: I/O error, dev nbd7, secto...: 2 Time(s)
end_request: I/O error, dev nbd8, secto...: 2 Time(s)
end_request: I/O error, dev nbd9, secto...: 2 Time(s)

& in the Cron <root@nt1> run-parts /etc/cron.daily email I am getting following message

/etc/cron.daily/logrotate:

error: error running postrotate script
error: error running postrotate script
error: error running postrotate script
error: error running shared postrotate script for /var/log/messages
/var/log/secure /var/log/maillog /var/log/spooler /var/log/boot.log
/var/log/cron


Thank you for the help.

 

 

 

 

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