• Gioh Kim's avatar
    block/rnbd: Set write-back cache and fua same to the target device · 512c781f
    Gioh Kim authored
    The rnbd-client always sets the write-back cache and fua attributes
    of the rnbd device queue regardless of the target device on the server.
    That generates IO hang issue when the target device does not
    support both of write-back cacne and fua.
    
    This patch adds more fields for the cache policy and fua into the
    device opening message. The rnbd-server sends the information
    if the target device supports the write-back cache and fua
    and rnbd-client recevives it and set the device queue accordingly.
    Signed-off-by: default avatarGioh Kim <gi-oh.kim@cloud.ionos.com>
    [jwang: some minor change, rename a few varables, remove unrelated comments.]
    Signed-off-by: default avatarJack Wang <jinpu.wang@cloud.ionos.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    512c781f
rnbd-srv.c 22.8 KB