>>>Can you try with security_model=passthrough? It provides the same results, see below:
$ dd if=/dev/zero of=test count=100000 100000+0 records in 100000+0 records out 51200000 bytes (51 MB) copied, 19.8581 s, 2.6 MB/s
$ dd if=/dev/zero of=test count=100000 bs=16384 100000+0 records in 100000+0 records out 1638400000 bytes (1.6 GB) copied, 72.3009 s, 22.7 MB/s
>>>Can you try with security_ model=passthrou gh?
It provides the same results, see below:
$ dd if=/dev/zero of=test count=100000
100000+0 records in
100000+0 records out
51200000 bytes (51 MB) copied, 19.8581 s, 2.6 MB/s
$ dd if=/dev/zero of=test count=100000 bs=16384
100000+0 records in
100000+0 records out
1638400000 bytes (1.6 GB) copied, 72.3009 s, 22.7 MB/s