8f9b977504
The NVMe bdev module supported active-passive policy for multipath mode first. By this patch, the NVMe bdev module supports active-active policy for multipath node next. Following the Linux kernel native NVMe multipath, the NVMe bdev module supports round robin algorithm for active-active policy. The multipath policy, active-passive or active-active, is managed per nvme_bdev. The multipath policy is copied to all corresponding nvme_bdev_channels. Different from active-passive, active-active caches even non_optimized path to provide load balance across multiple paths. Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Change-Id: Ie18b24db60d3da1ce2f83725b6cd3079f628f95b Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12001 Community-CI: Mellanox Build Bot Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> |
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