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Date:      Tue, 8 Sep 2015 21:28:01 -0400
From:      Tom Curry <thomasrcurry@gmail.com>
To:        Mark Saad <nonesuch@longcount.org>
Cc:        Steven Hartland <killing@multiplay.co.uk>,  "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   Re: TRIM support (same bug as linux?)
Message-ID:  <CAGtEZUBgbufc2W%2BiFg_7XVWyF4_mcfd8mj1=UMyTHM-RCWWR_g@mail.gmail.com>
In-Reply-To: <1BCC8B97-6C79-4864-8405-BA687577808A@longcount.org>
References:  <CAD=tpedAx2XLtQe6Nn%2BHvXWZ0X=TekmkpTruxCndYqpBXPFaFA@mail.gmail.com> <55EF7265.2050309@multiplay.co.uk> <1BCC8B97-6C79-4864-8405-BA687577808A@longcount.org>

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I'm no expert but if memory serves the issue had to do with concurrent
and/or queued trim which is not implemented in FreeBSD.

On Tue, Sep 8, 2015 at 9:11 PM, Mark Saad <nonesuch@longcount.org> wrote:

>
>
> > 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
> > _______________________________________________
> > freebsd-fs@freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-fs
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