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Last night one of our Debian 7 Servers unexpectedly stopped working.

I've never seen such a "crash" before, so i hope someone here can give me a clue what happened here.

System Infos:

  • Debian 7.11 @ 3.2.82-1 x86_64
  • The Server is a Supermicro Server with a Intel Xeon CPU E5-2630 v4 @ 2.20GHz and 128 GB of Ram.
  • Disk Controller is a AVAGO MegaRAID SAS 9361-4i with 4 SAMSUNG MZ7KM960HAHP Disks in RAID10.

Now to the problem: The server was becoming unreachable at one point. After ssh and ping are not responded i restarted the server via IPMI roundabout 10 minutes later.

And all i found in the logs was something like this:

Oct 30 03:51:53 box postfix/smtp[24856]: 6FE632E015F1: to=<XXXX@XXX.XX>, relay=mailload.mailmOct 30 04:05:03 box kernel: imklog 5.8.11, log source = /proc/kmsg started.
Oct 30 04:05:03 box rsyslogd: [origin software="rsyslogd" swVersion="5.8.11" x-pid="2804" x-info="http://www.rsyslog.com"] start

As you can see, the server stopped writing to disk in the middle of the line: ...mailmOct 30 ...

SMART and RAID controller status are all fine.

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    No idea. The useful information would have been on the console, but you don't seem to have looked at it. – Michael Hampton Oct 30 '16 at 14:50
  • There was nothing on the console. No kernel panic. nothing. Just a not responding login screen. – CyberLine Oct 30 '16 at 20:29
  • Do you use any SWAP? – Orphans Oct 31 '16 at 12:17
  • Yeah, ~18 GB Swapdisk. – CyberLine Oct 31 '16 at 20:00

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