Re: [PATCH] nvme: fix command effects log lifetime for multipath heads

Hi Keith,

Thanks for the review.

Do you mean the whole IOCS entry should be shared, including CSUPP?

The Commands Supported and Effects log is controller scoped (NVMe Base
Specification 2.3, Figure 206), and CSUPP reports command support for that
controller (Figure 214). Zone Append, for example, is optional per I/O
controller (ZNS 1.4, Figure 9). That seems to allow different paths to the
same shared namespace to report different CSUPP values.

Should CSUPP remain per-controller, or do you expect the full IOCS entries,
including CSUPP, to match across paths?

Thanks,
Yao