Em 06/03/13 06:18, Marin Atanasov Nikolov escreveu:
On Wed, Mar 6, 2013 at 10:55 AM, Loïc Blot <loic.b...@unix-experience.fr>wrote:
Hello,

Hi,


Since FreeBSD 9.1 I have strange problems with the distribution. Some
servers are rebooting without any kernel panic, instanly. First i
thought it's a problem with my KVM system, but one of my FreeBSD under a
Dell R210 have the same problem.
The servers concerned are now:
- Monitoring server
- LDAP test server
- Some other servers, randomly (not in production).
First i thought it's a problem with my FreeBSD install, then i download
another time the ISO but the problem was already here. After i try
another thing, install 9.0 and upgrade to 9.1 but same problem.
How can i get informations about this problem ?


I've had similar issues with one of my FreeBSD systems. My system had
spontaneous reboots without any kernel panic, without any clear evidence of
why it happened.

After a lot of trials and tests the root cause appeared to be the amount of
ZFS snapshots I had, which were more than 1K on a 8G system.

Upgrading from 9.0 to 9.1 didn't solve the issue, as clearly I had to do
some cleanup of the ZFS snapshots and since then it's more than a month
without any reboots.

Few pointers that you could use -- get these systems monitored and keep an
eye on the monitoring system -- CPU usage, memory, processes, network
traffic, etc.. I've noticed that my system was running low on free memory
and that later led me to the ZFS snapshots clue.

So, my advise is to get first these systems monitored and watch for
anything unusual happening. Then further investigate.

Good luck.

Regards,
Marin


Thanks for advance.
--
Best regards,

Loïc BLOT, Engineering
UNIX Systems, Security and Networks
http://www.unix-experience.fr

I have same problem but I'm using UFS and FreeBSD 9.1-STABLE with dumdev enabled (dumpdev="AUTO"). After spontaneous reboots, nothing in /var/crash.
Spontaneous reboots always happen between 00:00 am and 09:00 am.

FreeBSD rt01.xxx.com 9.1-STABLE FreeBSD 9.1-STABLE #14 r247497: Thu Feb 28 21:32:09 BRT 2013 r...@rt01.xxx.com:/usr/obj/usr/src/sys/INTNET amd64
hw.machine: amd64
hw.model: Intel(R) Xeon(R) CPU           E5606  @ 2.13GHz
hw.ncpu: 8
hw.byteorder: 1234
hw.physmem: 8509702144
hw.usermem: 7911686144

Handle 0x0003, DMI type 2, 16 bytes
Base Board Information
        Manufacturer: Intel Corporation
        Product Name: S5500BC
        Version: E25124-453
        Serial Number: BZBZ04800361
        Asset Tag: ....................
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: Not Specified
        Chassis Handle: 0x0004
        Type: Motherboard
        Contained Object Handles: 0

This motherboard have 2 CPU processors.

[]'s
Gondim
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