ATA 4K sector issues

[Thiago Damas]

  I had problem with ZFS.
  With gnop -S 4096, it works well on /dev/ad{a}X.nop; but I decided to not
use those disks.


2010/3/17 Mohacsi Janos <mohacsi at niif.hu>

>
>
>
> On Wed, 17 Mar 2010, Dag-Erling Sm?rgrav wrote:
>
>  Mohacsi Janos <mohacsi at niif.hu> writes:
>>
>>> What is the situation with ATA 4K dirves in FreeBSD? Are there
>>> any support for them in fdisk or disklabel?
>>>
>>
>> Hmm, didn't we discuss this already?  All we need to do is change the
>> defaults in fdisk so it rounds partition offsets and sizes to a multiple
>> of 8 sectors (or 16 for future-proofing) instead of aligning them with
>> fictitious cylinder boundaries.  Bsdlabel, as disklabel is properly
>> known, already DTRT: by default, the first partition starts at offset
>> 16.  Just make sure you specify sizes that are divisible by 8 or 16
>> blocks (not an issue if you use the M or G suffixes).  Sysinstall
>> operates in megabytes.
>>
>
> Thanks for the information.
>
>
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