Question on Op in vscsi trace

[haomactracy]

i have one question，that is，when i find the data structure of vscsi and print the trace(length and offset), typedef struct { uint32_t sn; uint32_t len; uint32_t nSG; uint16_t cmd; uint16_t ver; uint64_t lbn; uint64_t ts; } trace_v1_record_t; which element represents read or write i found that the simulator do not use the op(w or r), thanks for explaination! Thank you so much

[haomactracy]

I guess is cmd，and according to https://man.openbsd.org/vscsi.4，1 means read， 2 means write？ Is that right？

[haomactracy]

i found that cmd has 2 code 40 and 42，42 represents write and 40 represent read