[CentOS] everything seems to hang, but system is idle? [SOLVED]

[Ross Walker]

On Apr 12, 2010, at 10:25 AM, Rudi Ahlers <rudiahlers at gmail.com> wrote:

> On Mon, Apr 12, 2010 at 1:50 PM, JohnS <jses27 at gmail.com> wrote:
>>
>> On Sun, 2010-04-11 at 15:48 +0200, Rudi Ahlers wrote:
>>
>>> Yes, I think it could be a problematic iscsi config. Now that I  
>>> think
>>> of it, the server wasn't rebooted in about 2 or 3 months and I did
>>> some iscsi testing a while ago, but with a recent power outage it
>>> could have enabled / a faulty configuration, I just rebooted the
>>> server again, managed to the remove iscsi this time, and will see if
>>> this solves the problem.
>> ---
>>
>> Well along with that I would do a file system check.  Then if it  
>> keeps
>> on stop just the nmbd service and not smbd for cifs sharing.
>>
>> John
>>
>> _______________________________________________
>
>
> So far everything seems to be fine, apart from my Cobbler problem (see
> other thread). rsync has been running very well for the past few hours
> (have been deleting & restoring a lot of stuff to check ) so it was
> probably the improper iscsi mount that was giving issues.
>
> Thanx for all the help  :)

Don't mount a page cached iSCSI target over loopback or you'll  
deadlock the page cache. Sounds like what happened.

-Ross