fsck_ufs running too often

[Sean]

On 23/06/2012, at 7:47 AM, Leonardo M. Ramé wrote:

> Hi, since a few of days ago, I noticed my home server turns very slow more than once a day, so every time I run "top" to see what's processes are running, I can see fsck_ufs at the very top, and the hard drive working like mad.
> 
> I've checked my crontab and there's nothing related to fsck_ufs, where can I start searching for the cause of the problem?, I thought this process should run only at boot or shutdown, but this time it is running -apparently- without a cause.
> 
>  

Background fsck. Your server crashed, rebooted, started up and fsck is running in the background while everything else continues.

Ways to avoid background fsck:

* Disable it completely in /etc/rc.conf: background_fsck="NO". Then fsck finishes completely before the OS continues booting, so there may be extended delays if a crash occurs.
* Use gjournal so fsck doesn't need to churn over the disks
* Turn on softupdates-journaling for a similar effect.

The more important thing is to find out why it crashed - if there was a power outage, hardware or software issue.



> uname -a:
> FreeBSD server.my.local 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:46:30 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
> 
> 
> Regards,
> Leonardo M. Ramé
> http://leonardorame.blogspot.com
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