I recently had a kvm zone that stopped responding and a 'vmadm reboot <uuid>' 
took probably 6 or 7 minutes before it succeeded.



On Friday, August 15, 2014 7:12 PM, Goktug Yildirim via smartos-discuss 
<[email protected]> wrote:
 


I am not sure if it is related with this issue, but I am investigating a 
similar issue recently (used a few recent smartos and also a 201312xxx 
version). 

I haven’t figured out the root cause but what happens is that  "zoneadm -u 
$UUID boot -X” and “zoneadm -u $UUID halt -X” takes 50-51secs every time "vmadm 
start/stop $UUID” runs.  Zone type is not important, it is true for both KVM ve 
SmartOS zones.

Investigating further leaded me that there can be a timeout in 
"svc:/system/sysevent:default" smf service when zoneadmd is summoned for the 
related zone.  Also “devfsadm" takes about 50secs each time it runs and can not 
be canceled (tried to signaled with Ctlr-C).

Obviously this is happening for a single machine I have (older one). I do not 
see the same behavior for other servers (even if they are older), "vmadm 
start/stop $UUID” takes ~2 secs. Also devfsadm finishes as fast as the command 
inserted (but with an output of "Could not open /etc/saf/zsmon/_pmtab”).

As a workaround disabling svc:/system/sysevent:default makes "vmadm start/stop" 
faster as it was (~2 secs). This is not desirable but I didn’t see a side 
effect for KVM zones. However met a lofiadm issue with SmartOS zone (don’t 
remember the details right now).

As it affects a single machine (test machine indeed), I haven’t feel to file a 
bug.

On 15 Ağu 2014, at 22:53, Mark Creamer via smartos-discuss 
<[email protected]> wrote:


None of my VMs are stopping quickly anymore. When I issue vmadm stop {UUID} a 
couple minutes later or whenever the timeout is, I always get: timed out 
waiting for zone to transition to installed.
>
>
>After that, the zone will eventually stop. But sometimes it can be an hour 
>later. I've noticed that after the physical node has been restarted for 
>maintenance reasons or whatever, after that all the zones will start and stop 
>more quickly, but I still get the timeout message most of the time.
>
>
>What I'd like to find out is whether there is someplace I can look that would 
>help me understand why the shutdowns are taking so long.
>
>
>-- 
>Mark 
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