<div>
Have you searched the system logs for clues?
</div>


Have you searched the system logs for clues?

<div>
/var/log/messages was untelling...<br />
<br />
Do you have any other ideas where I might find some clues?
</div>


/var/log/messages was untelling...

Do you have any other ideas where I might find some clues?

<div>
No. I'd look in allt the logs that's available. If I didn't find anything there I wouldn't have a clue.
</div>


No. I'd look in allt the logs that's available. If I didn't find anything there I wouldn't have a clue.

<div>
Try a grep &quot;|error&quot; /var/log/* &gt;&nbsp;errors.log<br />
<br />
Then vi /var/log/errors.log
</div>


Try a grep "|error" /var/log/* > errors.log

Then vi /var/log/errors.log

<div>
<div class="content wysiwyg-content">
Greetings,<br />
<br />
I was happily coding along yesterday when my virtualized web server stopped responding to requests. &nbsp;I SSHed into the host and got the following error:<br />
<br />
&nbsp;bash: /sbin/reboot: Input/output error<br />
<br />
I had to restart using <br />
<br />
echo 1 &gt;&nbsp;/proc/sys/kernel/sysrq<br />
echo b &gt;&nbsp;/proc/sysrq-trigger<br />
<br />
Once the server restarted, the system seemed to work OK. &nbsp;But what's going on? &nbsp;Is there a hard drive failure imminent? &nbsp;How can I tell?
</div>
</div>


Greetings,

I was happily coding along yesterday when my virtualized web server stopped responding to requests.  I SSHed into the host and got the following error:

 bash: /sbin/reboot: Input/output error

I had to restart using 

echo 1 > /proc/sys/kernel/sysrq
echo b > /proc/sysrq-trigger

Once the server restarted, the system seemed to work OK.  But what's going on?  Is there a hard drive failure imminent?  How can I tell?

Linux (XenServer) Input/Output Error

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

Virtualization

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.