Kernel hangs on reboot on system with 05/2013~06/2013 CURRENT sources

Garrett Cooper yaneurabeya at
Tue Jun 25 22:15:50 UTC 2013

On Tue, Jun 25, 2013 at 2:27 PM, Florian Smeets <flo at> wrote:
> On 06/25/2013 22:45, Garrett Cooper wrote:
>>     Long story short is that I've run into an issue on several VM
>> images and real machines where UFS on mpt fails to reboot because it
>> hangs in the kernel. I don't have any specific details, other than it
>> occurs regularly with cam/mpt on VMware boxes running builds; however
>> I've also seen this occur with a Dell box that has an mpt SAS
>> controller with 2 zpools and gobs of RAM. Does anyone know of any
>> issues in this area [recently]?
>>     This set of issues appears to have started cropping up after
>> 03/2013, because I was running reliable builds off those sources.
>> Thanks!
>> -Garrett
> Yes, I saw the same thing today when rebooting a box running r251905:
> Tue Jun 18 10:12:42 CEST 2013 with ahci on a zfs only system.
> I update this box about once a week, that previous kernel was from Jun
> 11. and that still rebooted successfully. As the kernel from June 18. is
> now kernel.old I don't know the SVN rev for the June 11 kernel, but it
> looks like it was broken between June 11. and 18.
> However my workstation, also running a kernel from June 18. does still
> reboot OK, it's using ahci and UFS.

    Hmmm... nothing's jumping out as being incorrect for me in those
dates. There was a rev that were broken in your case that were
reverted by mav, but there doesn't appear to be anything that would be
causing my particular problem (again, right offhand). The snapshot I'm
using was generated on 06/07/2013.

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