Fwd: Autofs: spurious (?) log messages and zombies from automountd

[Hans Ottevanger]

On 09/26/14 11:00, Edward Tomasz Napierała wrote:
> On 0926T0840, Hans Ottevanger wrote:
>> Reposting here (with typos in subject corrected) after no response from
>> stable@ for almost two days.
>>
>> Regards,
>>
>> Hans
>>
>>
>> -------- Forwarded Message --------
>> Subject: Aitofs: spurious (?) jog messages and zombies from automountd
>> Date: Wed, 24 Sep 2014 09:10:05 +0200
>> From: Hans Ottevanger <hans at beastielabs.net>
>> To: freebsd-stable at FreeBSD.org
>>
>> Hi,
>>
>> When accessing a directory for the first time on /net, automounted using
>> the new autofs, I reproducibly get error messages in the log.
>>
>> I have exported a single directory (read/write) from my test server:
>>
>> $ showmount -e soekris
>>
>> Exports list on soekris:
>> /home
>>
>> My client runs 10-STABLE, also known as 10.1-BETA2 these days, updated
>> to r272021. The kernel config is GENERIC minus devices that I do not
>> have, with AUTOFS added.
>>
>> When accessing the server for the first time using:
>>
>> ls /net/soekris/home/hans
>>
>> I get the expected directory listing but immediately also see the
>> following in /var/log/messages:
>>
>> Sep 24 07:39:09 beastie automountd[1554]: child process 2096 terminated
>> with exit status 1
>> Sep 24 07:39:09 beastie automountd[1554]: child process 2101 terminated
>> with exit status 1
>
> There are no log messages preceding this?
>

No. Just the normal messages logged at boot time.

>> Additionally, a zombie process keep hanging forever:
>>
>> $ pstree 1554
>> -+= 01554 root /usr/sbin/automountd
>>    \--- 02106 root <defunct>
>>
>> When I wait until the directory is autounmounted and retry the access,
>> the zombie disappears (apparently finally waited for) and I get two
>> others in return:
>>
>> $ pstree 1554
>> -+= 01554 root /usr/sbin/automountd
>>    |--- 02658 root <defunct>
>>    \--- 02663 root <defunct>
>>
>> and a few extra log messages:
>>
>> Sep 24 08:52:17 beastie automountd[1554]: child process 2106 terminated
>> with exit status 1
>> Sep 24 08:52:17 beastie automountd[1554]: child process 2653 terminated
>> with exit status 1
>>
>> Is anyone else seeing this?
>> Do I miss something?
>> Is this expected behavior?
>
> Not quite; I'll try to reproduce it.
>

I planned to make a new CURRENT snapshot installation on another machine 
anyhow today. I will see what happens there.

Kind regards,

Hans