Il giorno lun, 25/11/2019 alle 23.15 +0800, Ming Lei ha scritto: > On Mon, Nov 25, 2019 at 03:58:34PM +0100, Andrea Vai wrote: > > [...] > > > What to try next? > > 1) cat /sys/kernel/debug/block/$DISK/hctx0/flags result: alloc_policy=FIFO SHOULD_MERGE|2 > > > 2) echo 128 > /sys/block/$DISK/queue/nr_requests and run your copy > 1GB > test again. done, and still fails. What to try next? Thanks, Andrea