[Samba] Hanging SMBD processes - Samba CRASHING

[Brian_Pickering at selinc.com]

We've had similar troubles with Samba 3.x on our ClearCase VOB server 
running RHEL3.  Our fix was to go back to the old 2.2.12, and we haven't 
had a problem since.  Unfortunately I was never able to devote enough time 
to tracking down the problem fully.  I had hoped that upgrading to RHEL4 
using a 2.6 kernel would help, but your experience doesn't bode well for 
that.

--------------------------------------------
Brian Pickering
System Administrator - Information Services
Schweitzer Engineering Laboratories, Inc.
Email - Brian_Pickering at selinc.com
Telephone - 509-332-1890 x1212


samba-bounces+brian_pickering=selinc.com at lists.samba.org wrote on 
12/07/2005 06:50:28 AM:

> Hi folks,
> 
> We have been experiencing problems with one of our Samba servers here
> for a while now and need a little help.  First off we are running Fedora
> Core 3, kernel version 2.6.12-1, and Samba version 3.0.20b. Our hardware
> is a RAID 5 DELL PowerEdge 700 server. The problem  I am about to
> describe has occurred on this server in previous versions of samba prior
> to version 3.0.20b and has the same result every time it happens.
> 
> To get to the point of the problem, this server will run fine for a
> period of time and then begin to build up SMBD processes until
> eventually our users can no longer access shares.  The Samba server just
> stops responding.  It does not even respond to STOP, START, or RESTART
> commands.  Doing a RESTART on samba will look like it is restarting the
> service, but Samba will still be in the same locked state with shares
> still not available.  Doing a status on the service then reveals that
> the STOP, START, or RESTART did nothing to clear out the old processes
> or the locked files it thought it previously had opened.  We end up just
> rebooting the server to clear everything out.  Right now we are just
> reading through all the documentation, posts, and waiting for this to
> happen again to hopefully capture some error in the log.  When that
> happens I'll send more detail.
> 
> I've seen other posts about this, but none ever clearly state some sort
> of resolution to this problem.  So I know this is happening to others.
> It's getting increasingly more frustrating since we have been running
> samba as our file servers for Windows clients for years now and never
> had this much of a problem with it crashing on us like this.  Our
> smb.conf file is pretty basic and really it is the one we have run since
> we first started.  Since we have not had a problem in the past this is
> making me think it is more an external application, like one of our
> databases possibly that is causing the SMBD process to build out of
> control.  We are open to any and all suggestions to help fix this from
> happening anymore.
> 
> smb.conf file:
> 
> [global]
>         workgroup = XXX
>         server string = Samba Server
>         security = DOMAIN
>         log file = /var/log/samba/log
>         max log size = 100000
>         socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
>         dns proxy = No
>         ldap ssl = no
>         log level = 5
>         load printers = No
>         kernel oplocks = No
> 
> [homes]
>         comment = Home Directories
>         read only = No
>         browseable = No
>         available = No
> 
> #[printers]
> #       comment = All Printers
> #       path = /var/spool/samba
> #       printable = Yes
> #       browseable = No
> 
> [public_app]
>         comment = Public Data Repository
>         path = /var/local/group_shares/public_data
>         read only = No
>         create mask = 02775
>         force create mode = 02775
>         directory mask = 02775
>         force directory mode = 02775
> 
> [prod_control]
>         comment = Production Control Repository
>         path = /var/local/group_shares/prod_control
>         read only = No
>         create mask = 02775
>         force create mode = 02775
>         directory mask = 02775
>         force directory mode = 02775
> 
> 
> 
> -- 
> Matt Lung
> 
> Midwest Tool & Die, Corp.
> 
> 
> 
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