can't get bache's sequential_cutoff to work

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Hi,

maybe i missed something or maybe i'm just wrong.


# cat /sys/block/bcache2/bcache/sequential_cutoff
512k

# cat /sys/block/bcache2/bcache/stats_five_minute/bypassed
64.3M

# dd if=/dev/zero of=/mnt/bcache2/ttt bs=4M count=1000 oflag=direct
1000+0 records in
1000+0 records out
4194304000 bytes (4,2 GB) copied, 11,0348 s, 380 MB/s

# cat /sys/block/bcache2/bcache/stats_five_minute/bypassed
69.3M

I also see only IOP/s an writes go to the SSD but not to the disk
behind. What's wrong?

Greets,
Stefan
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