Hi,

we didn't change anything , as far as we can tell other than put in another USB 
stick.

We will try your tips as soon as we have enabled serial over lan , since the 
default ipmi shell doesn't accept ctrl z 😊 or we will just background it right 
from,the start on Monday. We will post the results here then .  Now I have to 
find out how to get the TTY onto the serial port ...

Regards and thanks,
Matthias

-----Original Message-----
From: "Robert Mustacchi" <[email protected]>
Sent: ‎15.‎03.‎2014 16:14
To: "[email protected]" <[email protected]>
Subject: Re: [smartos-discuss] Hung Boot on upgrade

On 03/15/2014 12:56 AM, Matthias Götzke wrote:
> Hi,
> 
> We wanted to boot our smartos server with a newer image (tried a few). Sadly 
> the boot seems stuck.
> 
> Booting with noimport=true and manually importing seems stuck too no 
> (observable) progress on zpool import zones we let it run for a few hours, 
> and its a very small pool , just a 4 disks plus cache drives.
> 
> Booting the old image works fine..
> 
> What is the best way to debug such issues ?

The best thing to do here is again to boot noimport. Next, run the zpool
import in the background. Once that appears to be hung, you'll want to
run something like this:

$ pgrep zpool
$ # Note the output pid from pgrep and substitute with <pid> below
$ mdb -ke '0t<pid>::pid2proc | ::walk thread | ::findstack -v'

That should generate output and tell us where in the kernel the threads
that appear to be hung are. Based on that, we should be able to make
more progress.

Just to make sure, you haven't done anything like remove the cache
device have you?

Thanks,
Robert


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