format/newfs larger external consumer drives

[Don whY]

On 7/10/2015 1:20 PM, Wojciech Puchar wrote:
>>>
>>> i would assume you will most likely store large files.
>>
>> For the demo application I'm writing up (to illustrate the issues
>> that appliance developers might face), I would be storing large files
>> (e.g., ISO's).  But, some other developer/application might choose
>> to use the medium for smaller files -- or even smaller media capacity.
>>
> so right options.
>
> for smaller files
>
> newfs -m 0 -i <put what you need here> -b 32768 -f 4096 -U
>
> this will mean longer fsck
>
> you may add -j if you like - soft updates journalling.
>
>> means little "mismatches" in configuration can have noticeable
>> impact on the end user (e.g., he opts for finer-grained management
>> and pays the price when a volume isn't properly dismounted, power
>> fail, etc.)
>
> depends on I/O style. On random I/O it will not have big impact.

I meant he pays the price when something goes *wrong*.  With an
appliance, you're not typically dealing with console access.
Rather, expecting the device to just "Do The Right Thing".

>>> newfs -m 0 -i 262144 -b 65536 -f 8192 -U /dev/yourdisk
>>>
>>> and it will be fast to fsck.