samba_spnupdate invoked oom-killer ( samba BUG )

[Chan Min Wai]

Hi Richard,

I think smbcontrol didn't work on samba daemon (the AD DC daemon)

I can see the smbd info but it wasn't what I'm looking for as it have a
different PID and the memory look fine.

It seem that something lockup, odd enough...


root      3408  0.0  0.5 548476 46596 ?        Ss   Sep29   0:00
/usr/sbin/samba
root      3412  0.0  0.4 548476 33168 ?        S    Sep29   0:00
/usr/sbin/samba
root      3413  0.8  0.4 553048 39368 ?        S    Sep29  22:49
/usr/sbin/samba
root      3414  0.0  0.7 489980 59824 ?        Ss   Sep29   0:15
/usr/sbin/smbd -D --option=server role check:inhibit=yes --foreground
root      3415  0.0  0.4 552608 35860 ?        S    Sep29   0:02
/usr/sbin/samba
root      3416  0.0  0.4 548476 33044 ?        S    Sep29   0:00
/usr/sbin/samba
root      3417  0.0  0.5 548876 41636 ?        S    Sep29   0:39
/usr/sbin/samba
root      3418  0.0  0.4 548456 34880 ?        S    Sep29   0:04
/usr/sbin/samba
root      3419  0.0  0.4 552628 38192 ?        S    Sep29   0:07
/usr/sbin/samba
root      3420  3.9 19.2 2101544 1576456 ?     S    Sep29 108:51
/usr/sbin/samba
root      3421  0.0  0.4 551856 35532 ?        S    Sep29   0:51
/usr/sbin/samba
root      3422  0.0  0.4 548476 33224 ?        S    Sep29   0:00
/usr/sbin/samba
root      3423  0.0  0.5 552608 47292 ?        S    Sep29   0:53
/usr/sbin/samba


Let me restart the process again and together monitor the samba log to see
if I've missed anything again :)

Will be back :)


On Tue, Sep 30, 2014 at 9:35 AM, Richard Sharpe <realrichardsharpe at gmail.com
> wrote:

> On Mon, Sep 29, 2014 at 6:23 PM, Chan Min Wai <dcmwai at gmail.com> wrote:
> > Memory usage after upgrade to 4.1.12 since yesterday.
> >
> > free -h
> >              total       used       free     shared    buffers     cached
> > Mem:          7.8G       3.0G       4.8G       1.2M       352M       1.1G
> > -/+ buffers/cache:       1.6G       6.2G
> > Swap:         1.9G         0B       1.9G
> >
> >
> > root      3408  0.0  0.5 548476 46596 ?        Ss   Sep29   0:00
> > /usr/sbin/samba
> > root      3412  0.0  0.4 548476 33168 ?        S    Sep29   0:00
> > /usr/sbin/samba
> > root      3413  0.7  0.4 553048 39160 ?        S    Sep29  13:28
> > /usr/sbin/samba
> > root      3414  0.0  0.5 474940 47340 ?        Ss   Sep29   0:09
> > /usr/sbin/smbd -D --option=server role check:inhibit=yes --foreground
> > root      3415  0.0  0.4 552628 35856 ?        S    Sep29   0:01
> > /usr/sbin/samba
> > root      3416  0.0  0.4 548476 33044 ?        S    Sep29   0:00
> > /usr/sbin/samba
> > root      3417  0.0  0.5 548876 41552 ?        S    Sep29   0:32
> > /usr/sbin/samba
> > root      3418  0.0  0.4 548456 34880 ?        S    Sep29   0:02
> > /usr/sbin/samba
> > root      3419  0.0  0.4 552628 38192 ?        S    Sep29   0:04
> > /usr/sbin/samba
> > root      3420  2.9 12.8 1574492 1049440 ?     S    Sep29  55:11
> > /usr/sbin/samba  <--- eating memory...
>
> I don't think this is a tdb issue.
>
> Perhaps there is a talloc problem.
>
> You should be able to use smbcontrol <PID> pool-usage (or something
> like that) to get the smbd that is consuming memory to dump its talloc
> usage.
>
> Also, there might be something in the log file for that smbd that
> shows you why it is consuming lots of memory.
>
> --
> Regards,
> Richard Sharpe
> (何以解憂？唯有杜康。--曹操)
>