How to set 128bit host id with SetFeature

[PeterXUYAOHAI]

When trying to set hostid with 128 bits value using SetFeature,
The command parser will stop the int128 bit value with

nvme_cli set-feature <disk_path> --feature_id=0x81 --value=123456789012345678901234567890123456789
Expected long suffixed integer argument for 'value' but got '123456789012345678901234567890123456789!

nvme-cli/nvme.c

Line 3234 in cf29338

nvme_show_error("Expected long suffixed integer argument for '%s-si' but got '%s'!",

Can someone help me understand as the hostid is supporting 128bits value, but how to set the host id with 128bit in the first place if the Set Feature command cannot take >int64 values?

[igaw]

The command expects 8 bytes of data, you are providing a decimal number which has way too much data. Try something like 0x0102030405060708

[keithbusch]

No no, because it's 8 bytes, it doesn't fit in the command, so it has to be a separate payload. You have to take the payload either from a file or echo it into a pipe that nvme-cli will read from. You also need to set the ser-feature param that says a payload is expected (don't recall that parameter off the top of my head)