SSD questions

[Tim Darby]

On Sat, Mar 28, 2015 at 9:14 PM, Tim Darby <t+dfbsd at timdarby.net> wrote:

> On Sat, Mar 28, 2015 at 2:52 PM, Matthew Dillon <
> dillon at apollo.backplane.com> wrote:
>
>>
>> :
>> :>    a: 1GB boot
>> :>    b: 32GB swap
>> :>    d: * hammer               (root and everything else on one hammer
>> filesystem)
>> :
>> :fur such a config there is no need to reserve 10% unused.
>> :just add TRIMming b partition at every boot. swap would rarely be full.
>>
>>    Yes, very true.  swap can be TRIMmed on every boot and in most
>>    situations this will leave enough unallocated space.
>>
>>    In my example I totally forgot to include an 'unused' partition to
>>    hold the reserved area, too, but just having a larger swap partition
>>    and TRIMming it on boot probably works even better.
>>
>>    The -e option to swapon will trim swap.  Hmm.... our rc scripts don't
>>    provide a way to override that to add the -e.
>>
>>
> ​I like this idea. Would I have to use unencrypted swap for this to work?​
>
> Tim
>

Can I make rc do this by modifying df_swap1_start() in rc.d/swap1:

-swapon -a && return ${RC_CONFIGURED}
+swapon -ae && return ${RC_CONFIGURED}


Tim
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