[CentOS] 2 TB limit on a samba share

Steve Campbell campbell at cnpapers.com
Fri Nov 6 16:24:46 UTC 2009



Monty Shinn wrote:
> On 11/06/2009 09:17 AM, Steve Campbell wrote:
>   
>> Monty Shinn wrote:
>>   
>>     
>>> On 11/06/2009 09:04 AM, Steve Campbell wrote:
>>>   
>>>     
>>>       
>>>> I'm running a server with Centos 3 that I have set up a smbfs share to a 
>>>> Buffalo LinkStation. The LS has 4 drives configured with RAID 5. Each 
>>>> disk has 1 TB capacity, so the resulting drive is approximately 2.7 TB.
>>>>
>>>> When doing a df, the result shows 2 TB, and no used blocks. Is there 
>>>> some setting I can change so that Centos sees and uses all 2.7 TB or 
>>>> does Centos 3 not support this?
>>>>
>>>> Steve Campbell
>>>>
>>>> _______________________________________________
>>>> CentOS mailing list
>>>> CentOS at centos.org
>>>> http://lists.centos.org/mailman/listinfo/centos
>>>>   
>>>>     
>>>>       
>>>>         
>>> Setting the blocksize did the trick for me.
>>>
>>> block size = 4096
>>>
>>> This goes in the "services" section, not global.
>>>
>>> i.e.:
>>>
>>> [xx-01]
>>>         comment = xx-01
>>>         path = /data-store
>>>         valid users = xx
>>>         read only = No
>>>         block size = 4096
>>>
>>> Hope this helps.
>>>
>>> Monty
>>>
>>>
>>>   
>>>     
>>>       
>> I had googled and found something about that setting, but....
>>
>> Where exactly is this set? What file is that set in?
>>
>> Thanks for the fast reply.
>>
>> steve
>>
>> _______________________________________________
>> CentOS mailing list
>> CentOS at centos.org
>> http://lists.centos.org/mailman/listinfo/centos
>>   
>>     
>
> It is set in the smb.conf file.  It is located under /etc/samba/.
>
> You will have to restart samba for the change to take place.  Do that by
> issuing the following:
>
> /etc/init.d/smb restart.
>
> The setting is placed in the share definitions section, not in the
> global settings where server level definitions are placed.
>
> See http://us1.samba.org/samba/docs/man/manpages-3/smb.conf.5.html for
> more details.
>
> excerpt:
>
>
>       block size (S)
>
>
>     This parameter controls the behavior of smbd(8)
>     <http://us1.samba.org/samba/docs/man/manpages-3/smbd.8.html> when
>     reporting disk free sizes. By default, this reports a disk block
>     size of 1024 bytes.
>
>     Changing this parameter may have some effect on the efficiency of
>     client writes, this is not yet confirmed. This parameter was added
>     to allow advanced administrators to change it (usually to a higher
>     value) and test the effect it has on client write performance
>     without re-compiling the code. As this is an experimental option it
>     may be removed in a future release.
>
>     Changing this option does not change the disk free reporting size,
>     just the block size unit reported to the client.
>
>     Default: //|block size|/ = |1024| /
>
>     Example: //|block size|/ = |4096|/
>
> Hope this helps.
>
> Monty
>
>   

OK, now I'm even more confused. I'm not running smb at all now. The only 
thing I do is mount the LinkStation using webmin as a smbfs system. It 
shows up in my mount as an smbfs system using smbmount. The Centos box 
is only acting as a client to the LinkStation, which is a Windows box 
running samba shares. Does the smb.conf file control smbmount and smb 
clients also.

The link you provided seems to imply that smb.conf controls how the 
machine works when it's a Samba server.

Sorry to be so thick.

steve



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