On Fri, Mar 24, 2017 at 1:15 PM, Johannes Thumshirn <jthumshirn@xxxxxxx> wrote: > On Fri, Mar 24, 2017 at 11:45:15AM +0100, Jack Wang wrote: >> From: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx> >> >> This series introduces IBNBD/IBTRS kernel modules. >> >> IBNBD (InfiniBand network block device) allows for an RDMA transfer of block IO >> over InfiniBand network. The driver presents itself as a block device on client >> side and transmits the block requests in a zero-copy fashion to the server-side >> via InfiniBand. The server part of the driver converts the incoming buffers back >> into BIOs and hands them down to the underlying block device. As soon as IO >> responses come back from the drive, they are being transmitted back to the >> client. >> >> We design and implement this solution based on our need for Cloud Computing, >> the key features are: >> - High throughput and low latency due to: >> 1) Only two rdma messages per IO >> 2) Simplified client side server memory management >> 3) Eliminated SCSI sublayer >> - Simple configuration and handling >> 1) Server side is completely passive: volumes do not need to be >> explicitly exported >> 2) Only IB port GID and device path needed on client side to map >> a block device >> 3) A device can be remapped automatically i.e. after storage >> reboot >> - Pinning of IO-related processing to the CPU of the producer >> >> For usage please refer to Documentation/IBNBD.txt in later patch. >> My colleague Danil Kpnis presents IBNBD in Vault-2017 about our design/feature/ >> tradeoff/performance: >> >> http://events.linuxfoundation.org/sites/events/files/slides/IBNBD-Vault-2017.pdf >> > > Hi Jack, > > Sorry to ask (I haven't attented the Vault presentation) but why can't you use > NVMe over Fabrics in your environment? From what I see in your presentation > and cover letter, it provides all you need and is in fact a standard Linux and > Windows already have implemented. > > Thanks, > Johannes > -- > Johannes Thumshirn Storage > jthumshirn@xxxxxxx +49 911 74053 689 > SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg > GF: Felix Imendörffer, Jane Smithard, Graham Norton > HRB 21284 (AG Nürnberg) > Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 Hi Johnnes, Our IBNBD project was started 3 years ago based on our need for Cloud Computing, NVMeOF is a bit younger. - IBNBD is one of our components, part of our software defined storage solution. - As I listed in features, IBNBD has it's own features We're planning to look more into NVMeOF, but it's not a replacement for IBNBD. Thanks, -- Jack Wang Linux Kernel Developer ProfitBricks GmbH Greifswalder Str. 207 D - 10405 Berlin Tel: +49 30 577 008 042 Fax: +49 30 577 008 299 Email: jinpu.wang@xxxxxxxxxxxxxxxx URL: https://www.profitbricks.de Sitz der Gesellschaft: Berlin Registergericht: Amtsgericht Charlottenburg, HRB 125506 B Geschäftsführer: Achim Weiss -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
