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  1. RHEL
  2. RHEL-33434

upstream ublk: use ebpf aio to move fast io handling into kernel

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    • kernel / Storage / Block Layer
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    • upstream ublk: use ebpf aio to move fast io handling into kernel
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    • rhel-storage-io-2
    • ssg_filesystems_storage_and_HA
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      Just for tracking upstream activity with ublk & bpf

       

      1) motivation is to improve current userspace block device performance,

      and the goal is to get same level of kernel block driver

       

      2) so far the prototype has been completed

      • only io handling prog is added, later struct_ops prog needs to be
          added for supporting aio callback
      • only ublk-null bpf prog is added

      kernel:
              https://gitlab.cee.redhat.com/minlei/linux/-/commits/ublk_bpf
              CONFIG_UBLK_BPF needs to be enabled

      ublksrv
              https://gitlab.cee.redhat.com/minlei/ubdsrv/-/commits/bpf

       

      3) on-going discusstion with Kevin wolf 

              rhn-dev-minlei Ming Lei
              rhn-dev-minlei Ming Lei
              Ming Lei Ming Lei
              Changhui Zhong Changhui Zhong
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                Created:
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