[gpfsug-discuss] SMB server on GPFS clients and Followsymlinks

[Stephen Ulmer]

Lohit,

Just be aware that exporting the data from GPFS via SMB requires a SERVER license for the node in question. You’ve mentioned client a few times now. :)

-- 
Stephen



> On May 15, 2018, at 6:48 PM, Lohit Valleru <valleru at cbio.mskcc.org> wrote:
> 
> Thanks Christof.
> 
> The usecase is just that : it is easier to have symlinks of files/dirs from various locations/filesystems rather than copying or duplicating that data.
> 
> The design from many years was maintaining about 8 PB of NFS filesystem with thousands of symlinks to various locations and the same directories being exported on SMB.
> 
> Now we are migrating most of the data to GPFS keeping the symlinks as they are.
> Thus the need to follow symlinks from the GPFS filesystem to the NFS Filesystem.
> The client wants to effectively use the symlinks design that works when used on Linux but is not happy to hear that he will have to redo years of work just because GPFS does not support the same.
> 
> I understand that there might be a reason on why CES might not support this, but is it an issue if we run SMB server on the GPFS clients to expose a read only or read write GPFS mounts?
> 
> Regards,
> 
> Lohit
> 
> On May 15, 2018, 6:32 PM -0400, Christof Schmitt <christof.schmitt at us.ibm.com>, wrote:
>> > I could use CES, but CES does not support follow-symlinks outside respective SMB export.
>>  
>> Samba has the 'wide links' option, that we currently do not test and support as part of the mmsmb integration. You can always open a RFE and ask that we support this option in a future release.
>>  
>> > Follow-symlinks is a however a hard-requirement  for to follow links outside GPFS filesystems.
>>  
>> I might be reading this wrong, but do you actually want symlinks that point to a file or directory outside of the GPFS file system? Could you outline a usecase for that?
>> 
>> Regards,
>> 
>> Christof Schmitt || IBM || Spectrum Scale Development || Tucson, AZ
>> christof.schmitt at us.ibm.com  ||  +1-520-799-2469 <tel:+1-520-799-2469>    (T/L: 321-2469 <tel:321-2469>)
>>  
>>  
>> ----- Original message -----
>> From: valleru at cbio.mskcc.org
>> Sent by: gpfsug-discuss-bounces at spectrumscale.org
>> To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
>> Cc:
>> Subject: [gpfsug-discuss] SMB server on GPFS clients and Followsymlinks
>> Date: Tue, May 15, 2018 3:04 PM
>>  
>> Hello All,
>>  
>> Has anyone tried serving SMB export of GPFS mounts from a SMB server on GPFS client? Is it supported and does it lead to any issues?
>> I understand that i will not need a redundant SMB server configuration.
>>  
>> I could use CES, but CES does not support follow-symlinks outside respective SMB export. Follow-symlinks is a however a hard-requirement  for to follow links outside GPFS filesystems.
>> 
>> Thanks,
>> Lohit
>>  
>>  
>> _______________________________________________
>> gpfsug-discuss mailing list
>> gpfsug-discuss at spectrumscale.org
>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss <http://gpfsug.org/mailman/listinfo/gpfsug-discuss>
>>  
>> 
>> _______________________________________________
>> gpfsug-discuss mailing list
>> gpfsug-discuss at spectrumscale.org
>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
> _______________________________________________
> gpfsug-discuss mailing list
> gpfsug-discuss at spectrumscale.org
> http://gpfsug.org/mailman/listinfo/gpfsug-discuss

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180515/49712c0e/attachment-0002.htm>