Re: [Wg-test-framework] oseleta reboot hang problem not fixed :-/ [and 1 more messages]

["Paul L. George" <pgeorge@xxxxxxxxxx>]

Ian,

I cannot really debug or trouble shoot the systems at the COLO.  I will ask 
Dell how they would like to proceed.

Sent from my iPhone
Paul l. George
508-450-9332

PLG Enterprises, Inc.
42 East Main Street
Westborough, MA 01581


On Apr 30, 2015, at 10:21 AM, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:

>> oseleta (Dell machines hanging in BIOS during some reboots)
>> -----------------------------------------------------------
>> [ Email from Ian noted that problem is not easy to repro. ]
>> ACTION: Ian to try to find better repro.
> 
> I have succeeded.  The operating system setup currently installed on
> each of oseleta[01] can repro the problem.  I can confirm, having
> produced one ad-hoc repro of the problem on each machine, that when
> the problem occurs the machine seems entirely hung.
> 
> Steps to repro (starting with machine powered off):
> 
> - Power the machine on
>      - wait for it to boot into the operating system
> - Repeat these steps:
>      - ssh to it to instruct it to reboot, that is:
>             ssh root@oseleta0 reboot
>      - wait for the machine to boot into the operating system
> 
> FYI my ad-hoc repro took 7 boots of oseleta0 and 35 boots of oseleta1.
> NB that the sample size is too small to conclude that this difference
> represents any real difference between the two machines.  Based on
> these numbers my very rough best guess of failure probability is
> around 5% (if both machines are the same).
> 
> So it is not really practical to reproduce this problem by hand,
> because it can easily take dozens of trials.
> 
> 
> I hereby turn these machines over to you for whatever ad-hoc testing
> etc. you or Dell need to do.
> 
>> ACTION: Paul to chase Dell.
> 
> Please keep us up to date with progress.
> 
> Thanks,
> Ian.

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