[DragonFlyBSD - Bug #2249] deadlock under high i/o load (e.g. hammer reblock)

[Rumko Rumko via Redmine]

Issue #2249 has been updated by Rumko Rumko.


Antonio M. Huete Jimenez via Redmine wrote:
> Issue #2249 has been updated by Antonio M. Huete Jimenez.
> 
> 
> Hi Rumko,
> 
> I see your kern.0 is 7.5K, bad upload or bad dump?

bad dump I'd guess, copied over the kernel from /boot and seems to be ok now

> -rw-r--r--  1 rumko  wheel   231K Nov 28 13:51 core.txt.0
> -rw-------  1 rumko  wheel   465B Nov 28 13:50 info.0
> -rw-r--r--  1 rumko  wheel   7.5K Nov 28 13:50 kern.0
> -rw-------  1 rumko  wheel   407M Nov 28 13:51 vmcore.0
> 
> Thanks,
> Antonio Huete
<snip>
-- 
Please do not CC me, since I already receive everything from these MLs.

Regards,
Rumko
----------------------------------------
Bug #2249: deadlock under high i/o load (e.g. hammer reblock)
http://bugs.dragonflybsd.org/issues/2249

Author: Rumko Rumko
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


Almost latest master (last commit from upstream should be
0e84c0db0d0bcd6d681bc30fd16e96c26bb92db2).

Whenever nightly cron runs and a few minutes after hammer cleanup starts doing
it's job, the machine becomes mostly unresponsive (most processes and most ssh
connections stop responding, but strangely pf still continues doing it's job).

Fortunately debugging through serial console still worked, so the dump is
available at leaf:~rumko/crash/deadlock/*.0 .
-- 
Please do not CC me, since I already receive everything from these MLs.

Regards,
Rumko


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