Re: OpenBSD 5.1 SSD

2012-04-14 Thread Stuart Henderson
On 2012-04-14, Ted Unangst  wrote:
> On Sat, Apr 14, 2012, Laurence Rochfort wrote:
>> Hi,
>> 
>> I'm considering purchasing a domestic SSD for my laptop.
>> 
>> Does OpenBSD 5.1 support SSDs and the TRIM command if needed?
>
> It supports SSD drives like any other drive, but no special features.
> Specifically, there's no TRIM support.

dlg did some work towards this on scsi-like controllers, but
iirc it's not passed all the way up to the filesystem yet.

Recent releases will align partitions better for most flash devices
(and newer hard drives) than older ones, people with SSD/CF storage
might want to check if disklabel says the offset of the 'a'
partition is 63 or 64, if it's 63 then it may be worth reinstalling
with newer fdisk/disklabel. Probably depends on the controller how
much effect this will have though.



Re: OpenBSD 5.1 SSD

2012-04-14 Thread Laurence Rochfort
Thank you everybody.

I don't really use much space locally as my videos etc are on the network.

I'll leave some space unpartitioned and let garbage collection do the rest.

Many thanks,
Laurence
On Apr 15, 2012 12:09 AM, "Alexander Hall"  wrote:

> On 04/14/12 20:38, Laurence Rochfort wrote:
>
>> Hi,
>>
>> I'm considering purchasing a domestic SSD for my laptop.
>>
>> Does OpenBSD 5.1 support SSDs and the TRIM command if needed?
>>
>
> As already said; yes and no, respectively. It matters little though, but
> if you're really concerned about the missing TRIM support, don't partition
> the entire disk but leave a part of it unused.
>
> That said, just buy one and enjoy the ride. Ohmigod it's nice. :)
>
> /Alexander
>
>
>> Regards,
>> Laurence Rochfort



Re: OpenBSD 5.1 SSD

2012-04-14 Thread Alexander Hall

On 04/14/12 20:38, Laurence Rochfort wrote:

Hi,

I'm considering purchasing a domestic SSD for my laptop.

Does OpenBSD 5.1 support SSDs and the TRIM command if needed?


As already said; yes and no, respectively. It matters little though, but 
if you're really concerned about the missing TRIM support, don't 
partition the entire disk but leave a part of it unused.


That said, just buy one and enjoy the ride. Ohmigod it's nice. :)

/Alexander



Regards,
Laurence Rochfort




Re: OpenBSD 5.1 SSD

2012-04-14 Thread Andres Perera
doesn't support trim. i remember reading somewhere, maybe a freebsd
mailing list, that calculating when to do trim is tricky because it
can only work on a specific width

On Sat, Apr 14, 2012 at 2:08 PM, Laurence Rochfort
 wrote:
> Hi,
>
> I'm considering purchasing a domestic SSD for my laptop.
>
> Does OpenBSD 5.1 support SSDs and the TRIM command if needed?
>
> Regards,
> Laurence Rochfort



Re: OpenBSD 5.1 SSD

2012-04-14 Thread Ted Unangst
On Sat, Apr 14, 2012, Laurence Rochfort wrote:
> Hi,
> 
> I'm considering purchasing a domestic SSD for my laptop.
> 
> Does OpenBSD 5.1 support SSDs and the TRIM command if needed?

It supports SSD drives like any other drive, but no special features.
Specifically, there's no TRIM support.



OpenBSD 5.1 SSD

2012-04-14 Thread Laurence Rochfort
Hi,

I'm considering purchasing a domestic SSD for my laptop.

Does OpenBSD 5.1 support SSDs and the TRIM command if needed?

Regards,
Laurence Rochfort