Re: [gpfsug-discuss] Online data migration tool

i thought i answered that already, but maybe i just thought about answering it and then forgot about it :-D so yes more than 32 subblocks per block significant increase the performance of filesystems with small files, for the sake of the argument let's say 32k in a large block filesystem again

Re: [gpfsug-discuss] Online data migration tool

Thanks, Alex. I'm all too familiar with the trade offs between large blocks and small files and we do use pretty robust SSD storage for our metadata. We support a wide range of workloads and we have some folks with many small (<1M) files and other folks with many large (>256MB) files. My point in

Re: [gpfsug-discuss] Online data migration tool

Hey Aaron, Can you define your sizes for "large blocks" and "small files"? If you dial one up and the other down, your performance will be worse. And in any case it's a pathological corner case so it shouldn't matter much for your workflow, unless you've designed your system with the wrong

Re: [gpfsug-discuss] Online data migration tool

Thanks, Bill. I still don't feel like I've got an clear answer from IBM and frankly the core issue of a lack of migration tool was totally dodged. Again in Sven's presentation from SSUG @ SC17 (http://files.gpfsug.org/presentations/2017/SC17/SC17-UG-CORAL_V3.pdf) he mentions "It has a

[gpfsug-discuss] Spectrum Scale 5.0.0 Available on Passport Advantage

Scale 5.0 was released today and is available for download. Time to construct a test cluster! Bob Oesterlin Sr Principal Storage Engineer, Nuance 507-269-0413 ___ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org

Re: [gpfsug-discuss] mmbackup log file size after GPFS 4.2.3.5upgrade

It's not clear that this is a problem or malfunction. Customer should contact IBM support and be ready to transmit copies of the cited log files and other mmbackup command output (stdout and stderr messages) for analysis. Also mmsnap output. From: "IBM Spectrum Scale" To:

Re: [gpfsug-discuss] mmbackup log file size after GPFS 4.2.3.5 upgrade

Tru, Can you please help with this query or forward to the right person. Thanks. Regards, The Spectrum Scale (GPFS) team -- If you feel that your question can benefit other users of