Bez├╝glich Lars Engels's Nachricht vom 05.12.2017 17:57 (localtime):
> On Tue, Dec 05, 2017 at 04:49:45AM -0800, Rodney W. Grimes wrote:
>>> Hi,
>>>
>>>>   bhyve -c 2 -s 0,hostbridge -s 
>>>> 3,ahci-hd,/dev/zvol/my_zroot/VM/img/win7/disk0
>>>   For win7/2k8*, the sector size presented to the guest has to be forced 
>>> to 512 bytes i.e. for the ahci-cd slot, the config would look like:
>>>
>>>   -s 3,ahci-hd,/dev/zvol/my_zroot/VM/img/win7/disk0,sectorsize=512
>> Should we start a wiki page on "Guest Quirks"?
> Please do.

I'd vote for making ,"sectorsize=512/4096" a artificial default.
I'm not entire sure about the different Windows versions, but since
BHYVE_UEFI.fd isn't able to access drives other than 512b sector size, I
think it doesn't make sense to provide 8k drives by default in case of
default ZFS volume.
If I remember correctly Win6.3 (8.1/Server2k12) did support 4k and 8k
native drives, with the limitation that "windows internal database -
mssql" might not be usable, but I couldn't UEFI boot unless I changed
sectrosize to 512 and stripezesize to 4k/8k.
I guess not may other operating systems support bigger sector sizes as
well as FreeBSD does today.
So this artifical format might be what most times makes most sense.

-harry

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