Hi Vijayakumar, Balasubramanian, Vijayakumar (STSD) wrote: > > Hi, > > Attached is modified patch with the comments incorporated. I think it doesn't work correctly if repeat_count is more than 1 because io_count is decremented for every end_io while it is incremented only when the path is selected. The 'leastpending_io' balancing is actually what our queue-length based dynamic load balancer, which is originally posted by Stefan Bader, is already doing. Our patches work with repeat_count more than 1 by adding a hook at starting I/O: http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/rqdm-dlb-01-interface-change-for-queue-length-dlb.patch So, please take a look at our patches and let's avoid the duplication of efforts. Comments are welcome. Also, if you are interested in dynamic load balancing, you might want to check the request-based dm-multipath, too. Since necessary changes in the block layer and SCSI subsystem are already included in Linus's tree, remaining patches are dm only. The latest version is in the Alasdair's editing tree. Thanks, Kiyoshi Ueda -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
