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Date:      Tue, 8 Sep 2015 21:11:24 -0400
From:      Mark Saad <nonesuch@longcount.org>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   Re: TRIM support (same bug as linux?)
Message-ID:  <1BCC8B97-6C79-4864-8405-BA687577808A@longcount.org>
In-Reply-To: <55EF7265.2050309@multiplay.co.uk>
References:  <CAD=tpedAx2XLtQe6Nn%2BHvXWZ0X=TekmkpTruxCndYqpBXPFaFA@mail.gmail.com> <55EF7265.2050309@multiplay.co.uk>

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> On Sep 8, 2015, at 7:42 PM, Steven Hartland <killing@multiplay.co.uk> wrote:
> 
> Nope FreeBSD is not affected by this.
> 
>> On 09/09/2015 00:15, FF wrote:
>> I'm asking a pretty vague question and I apologize in advance, not trying
>> to troll.
>> 
>> The question has to do with whether FreeBSD is using TRIM the same way as
>> recent Linux kernels.
>> 
>> https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/ seems
>> to imply that there are instabilities that can occur. Trying to avoid
>> duplicating effort if this has already been addressed or if its a complete
>> dead alley because there isn't a commonality.
>> 
>> Thanks in advance!
> 

It would be interesting if anyone could explain the reasons why ufs/ffs and zfs  and FreeBSD are not effected by this issue .  My rudimentary understanding of the issue was that it's wasn't just a software glitch in the ext filesystem and bad firmware but a combination of that and Linux poorly supporting a ata modes that are not supported at all on FreeBSD .  Is that correct ?


---
Mark Saad | nonesuch@longcount.org
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