[Samba] 2x Samba4 Bugs - "mount error(5): Input/output error" & "recycle: stat for ... AFP_AfpInfo returned No such file or directory"

[Jeremy Allison]

On Thu, May 08, 2014 at 11:21:09AM +0200, Leander Schäfer wrote:
> Hi
> 
> I'm using Samba version 4.1.7 on the server side. On the Client side
> is multiple versions
> - a copy machine Konica Minolta
> - Windows XP
> - Windows 7
> - Mac OSx (Mavericks)
> - CentOS (XenServer)
> 
> all of them get sporadic input output errors. E.g: on a Linux I would get a
> 
> mount error(5): Input/output error
> 
> after the first try. And as funny as it sounds, but the second try
> is a success and all is mounted as expected. What causes this
> sporadic behaviour?
> It is quite annoying, since almost every second scan with the copy
> machine is a fail ...
> Is this a bug?
> 
> Mount command on Linux:
> mount -t cifs //10.0.0.200/MYSHARE -o
> username="${SMB_USR}",password="${SMB_PWD}",sec=ntlmv2 /mnt/MyShare
> 
> Also I saw this in the logs:
> 
>   recycle: stat for /mnt/MyShare/.Trashes/Management/Gründung/06 -
> Corporate Design/02 - Farbverläufe/Bildschirmfoto 2014-04-30 um
> 17.23.08.png:AFP_AfpInfo returned No such file or directory
> [2014/05/05 21:37:28.770219,  0] ../lib/util/fault.c:72(fault_report)
>   ===============================================================
> [2014/05/05 21:37:28.786358,  0] ../lib/util/fault.c:73(fault_report)
>   INTERNAL ERROR: Signal 11 in pid 18048 (4.1.7)
>   Please read the Trouble-Shooting section of the Samba HOWTO
> [2014/05/05 21:37:28.786505,  0] ../lib/util/fault.c:75(fault_report)
>   ===============================================================

This isn't enough detail for us to debug the problem.

Can you rebuild with debug symbols (-g) and add a
panic action = /bin/sleep 9999999
line to your smb.conf [global] section ? That
way you'll get a stuck smbd on a crash you
can attach to via gdb and get a good backtrace
so we can see what might be going on.

Thanks !

Jeremy.