couldn't kill stuck convertd processes

[mikiso]

Hi,

Our customer observed that the convertd server process (/opt/zimbra/java/bin/java com.zimbra.cs.convertd.TransformationServer)
is consuming a lot of CPU from this morning.
It consumes 90% of CPU so far.
We know restarting mailboxd is a workaround for this case, however our customer
want to minimize the impact to their service.

I believe we can triage by restarting the convertd process,
does anyone know how to restart it?
Zimbra Admin Guide describes that "zmconvertctl restart" can do this, on the other hand,
it seems zmconvertdmon script calls /opt/zimbra/libexec/zmconvertd instead.
If we can restart the convertd server, what is the expected impact to the service?
We think ZCS can't index the attachments and users can't view attahcments as html
while restarting. Am I right about that?

We've tried to kill the stuck kvoop processes, but those process become "defunct" and the convertd still consumes much CPU.

---Environment---
ZCS NE 5.0.16 multi-server installation with convertd v1
RHEL 5 64bit

Regards,

[phoenix]

Originally Posted by mikiso

ZCS NE 5.0.16 multi-server installation with convertd v1
RHEL 5 64bit

Try upgrading Convertd to version 2.

[mikiso]

Yes, I know upgrade to convertd v2 is the ultimate fix to the issue,
however I need to know how to triage the issue.

Thanks to Zimbra support , it turned out to be that the problem is that
convertdv1 was closely attached to the mailboxd server and attempt
to stop the convertd server will fail.

Still, I assume it could be useful to kill the convertd server process,
and then start up new convertd server as /opt/zimbra/libexec/zmconvertdmon
script does.
This script kills the stray java process of the convertd server and stray kvoop process when pinging to
the convertd process fails , and then starts up new convertd server...

[phoenix]

Originally Posted by mikiso

Yes, I know upgrade to convertd v2 is the ultimate fix to the issue,...

It would have been useful to tell us you knew that in the first place.