Hi Lohit, Just another thought, you also have to consider that metadata updates will have to fail between nodes in the CES cluster with those in other clusters because nodes in separate remote clusters do not communicate directly for metadata updates, which depends on your workload is that would be an issue.
Cheers, -Bryan From: [email protected] [mailto:[email protected]] On Behalf Of Mathias Dietz Sent: Thursday, May 03, 2018 6:41 AM To: gpfsug main discussion list <[email protected]> Subject: Re: [gpfsug-discuss] Spectrum Scale CES and remote file system mounts Note: External Email ________________________________ Hi Lohit, >I am thinking of using a single CES protocol cluster, with remote mounts from >3 storage clusters. Technically this should work fine (assuming all 3 clusters use the same uids/guids). However this has not been tested in our Test lab. >One thing to watch, be careful if your CES root is on a remote fs, as if that >goes away, so do all CES exports. Not only the ces root file system is a concern, the whole CES cluster will go down if any remote file systems with NFS exports is not available. e.g. if remote cluster 1 is not available, the CES cluster will unmount the corresponding file system which will lead to a NFS failure on all CES nodes. Mit freundlichen Grüßen / Kind regards Mathias Dietz Spectrum Scale Development - Release Lead Architect (4.2.x) Spectrum Scale RAS Architect --------------------------------------------------------------------------- IBM Deutschland Am Weiher 24 65451 Kelsterbach Phone: +49 70342744105 Mobile: +49-15152801035 E-Mail: [email protected]<mailto:[email protected]> ----------------------------------------------------------------------------- IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martina Koederitz, Geschäftsführung: Dirk WittkoppSitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 From: [email protected]<mailto:[email protected]> To: gpfsug main discussion list <[email protected]<mailto:[email protected]>> Date: 01/05/2018 16:34 Subject: Re: [gpfsug-discuss] Spectrum Scale CES and remote file system mounts Sent by: [email protected]<mailto:[email protected]> ________________________________ Thanks Simon. I will make sure i am careful about the CES root and test nfs exporting more than 2 remote file systems. Regards, Lohit On Apr 30, 2018, 5:57 PM -0400, Simon Thompson (IT Research Support) <[email protected]<mailto:[email protected]>>, wrote: You have been able to do this for some time, though I think it's only just supported. We've been exporting remote mounts since CES was added. At some point we've had two storage clusters supplying data and at least 3 remote file-systems exported over NFS and SMB. One thing to watch, be careful if your CES root is on a remote fs, as if that goes away, so do all CES exports. We do have CES root on a remote fs and it works, just be aware... Simon ________________________________________ From: [email protected]<mailto:[email protected]> [[email protected]] on behalf of [email protected]<mailto:[email protected]> [[email protected]] Sent: 30 April 2018 22:11 To: gpfsug main discussion list Subject: [gpfsug-discuss] Spectrum Scale CES and remote file system mounts Hello All, I read from the below link, that it is now possible to export remote mounts over NFS/SMB. https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.0/com.ibm.spectrum.scale.v5r00.doc/bl1adv_protocoloverremoteclu.htm I am thinking of using a single CES protocol cluster, with remote mounts from 3 storage clusters. May i know, if i will be able to export the 3 remote mounts(from 3 storage clusters) over NFS/SMB from a single CES protocol cluster? Because according to the limitations as mentioned in the below link: https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.0/com.ibm.spectrum.scale.v5r00.doc/bl1adv_limitationofprotocolonRMT.htm It says "You can configure one storage cluster and up to five protocol clusters (current limit)." Regards, Lohit _______________________________________________ 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 ________________________________ Note: This email is for the confidential use of the named addressee(s) only and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you are hereby notified that any review, dissemination or copying of this email is strictly prohibited, and to please notify the sender immediately and destroy this email and any attachments. Email transmission cannot be guaranteed to be secure or error-free. The Company, therefore, does not make any guarantees as to the completeness or accuracy of this email or any attachments. This email is for informational purposes only and does not constitute a recommendation, offer, request or solicitation of any kind to buy, sell, subscribe, redeem or perform any type of transaction of a financial product.
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