[Bug 204646] 10.2 iSCSI backed zpool shows imporper warnings about non-native block sizes that 10.1 doesn't show

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204646

Alexander Motin <mav at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |mav at FreeBSD.org

--- Comment #2 from Alexander Motin <mav at FreeBSD.org> ---
recordsize and volblocksize properties are functionally equal, except that one
of them is used for datasets, while another is for zvols.  Both of them CTL
report to initiator as a physical sector size, since that is smallest item that
can be written to disks or read back, exactly as for real physical sectors.

So I don't see any problem from CTL side here. The only problem I see is in ZFS
on initiator side -- it never sets ashift above 13 (8K), that is reasonable,
but it still complains about that as an error, that is pointless.  I think ZFS
code should be fixed to just ignore any physical block sizes above 8K, as if
they would not be reported.

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