Hi Jens, On 2016 M09 8, Thu 14:13:46 CEST Jens Axboe wrote: > On 09/08/2016 01:33 PM, Josef Bacik wrote: > > This is a patch series aimed at bringing NBD into 2016. The two big > > components of this series is converting nbd over to using blkmq and > > then allowing us to provide more than one connection for a nbd device. > > The NBD user space server doesn't care about how many connections it > > has to a particular device, so we can easily open multiple > > connections to the server and allow blkmq to handle multi-plexing over > > the different connections. This drastically improves performance > > with multi-threaded workloads over NBD. The multi-connection support > > requires some changes to the NBD userspace client code, and you can > > find that code here > > > > https://github.com/josefbacik/nbd > > > > I have been testing this for a few months and it is pretty solid and gives > > excellent performance improvements. Thanks, > > Not only are these nice performance improvements, it also cleans up the > code a lot and kills crufty old driver code in favor of using the proper > APIs instead. I have applied the series for 4.9. These patches conflict with the patches I picked up for 4.9 that fix the issues of dying filesystems on killed NBD block devices. As I am a kernel hobbiest now, I had to move the git repository recently: https://github.com/scosu/linux-nbd Best Regards, Markus
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