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Re: [Samba] Not enough storage space error




On Fri, 2017-08-04 at 06:34 +0530, Anantha Raghava wrote:
> Hello Andrew,
> From the day one, we set the log level to 3. Log size is really huge.
> However, I did not see some thing very interesting and related to
> this error. It is all to do with user login, information, etc. Should
> I have to increase the log level to get more info?
> One thing we noticed. When we restart the samba-ad-dc service, it
> allows us to add new users, add new computers to domain, and even
> move the user from one OU to another. However, from last two days, at
> around evening (around 4:45 PM), samba all of a sudden cuts off all
> users from domain and even fails to list the domain controllers in
> RSAT. If we restart samba-ad-dc, it starts working properly.
> Now we need to see, what is that event that is causing this cut off
> all of a sudden? Is it a shear coincidence? Or is it something to do
> with the large number of PCs are now getting added from different
> places? Incidentally, we use the same domain admin account (limited
> administrator) to add PCs to domain. Is this causing some problem?

Can you track the memory use of samba over time?

You say elsewhere that there is plenty of RAM free, but is that still
the case just before it blows up?

Can you try Samba 4.7rc, where we made LDAP multi-process?  That would
keep any memory leak more isolated, which might help us find it.

You can also look for some clues in the output of:

 smbcontrol $PID pool-usage

It is very verbose, but careful analysis over time might give a clue
where the memory is.

Thanks,

Andrew Bartlett

> --
> 
> Thanks & Regards,
> 
> Anantha Raghava
> 
> Do not print this e-mail unless required. Save Paper & trees.
> On 03/08/17 8:09 AM, Andrew Bartlett wrote:
> > On Wed, 2017-08-02 at 21:09 +0530, Anantha Raghava via samba wrote:
> > > Hi,
> > > 
> > > We are using Samba AD DC (Version 4.6.5) on CentOS 7.3. We have
> > > two 
> > > servers with BIND9 DNS and all are working just fine.
> > > 
> > > Today, when we attempted to move couple of users from one OU to
> > > another, 
> > > Windows RSAT reported /*"Windows cannot move object. Ther*//*e
> > > *//*is 
> > > not enough storage space*//*"*/. 
> > 
> > I wouldn't take the error string literally.  There are too many
> > layers
> > of mapping going on.  LDAP does not contain such an error, so think
> > of
> > it as a bad translation. 
> > 
> > > Our servers have 300 GB Storage more 
> > > that 270GB is free on the storage. At the moment we have added
> > > about 
> > > 1000 users and about 450 computers into domain. Overall, we will
> > > add 
> > > about 7500 users and equal no of computers to domain. I also
> > > noticed 
> > > that RSAT lost the connection to domain all of a sudden. However,
> > > when I 
> > > restarted the samba-ad-dc service, it reconnected. I am able to
> > > add
> > > new 
> > > computers and new users into domain. But moving the user from one
> > > OU
> > > to 
> > > another is throwing above error.
> > > 
> > > I believe the DB is a 32 bit one and should support upto 4 GB.
> > > When
> > > I 
> > > checked in /usr/local/samba/private folder the size of smb.ldb
> > > file
> > > is 
> > > about 4.1 MB and rest of the ldb and tdb files are around 1 MB in
> > > size.
> > > 
> > > Now, how do I correctly check the current DB size? Is the above
> > > error
> > > a 
> > > strange behaviour? How do we fix the above error?
> > 
> > Turn up the logging on the AD DC and see what the real error and
> > error
> > string is. 
> > 
> > Thanks,
> > 
> > Andrew Bartlett
> > 
>  
-- 
Andrew Bartlett
https://samba.org/~abartlet/
Authentication Developer, Samba Team         https://samba.org
Samba Development and Support, Catalyst IT   
https://catalyst.net.nz/services/samba





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