TRIM erases user data

[Mark Saad]

On Wed, Jun 17, 2015 at 8:30 PM, Steven Hartland <steven at multiplay.co.uk>
wrote:

> Just for the record illumos doesn't have any ZFS TRIM support.
>
>
 There are lots of things in illumos that applys to :(.  In any case I
wasn't aware that illumos zfs was sans-trim .


> > On 17 Jun 2015, at 17:25, Mark Saad <nonesuch at longcount.org> wrote:
> >
> >
> >
> >> On Jun 17, 2015, at 7:55 PM, steven at multiplay.co.uk wrote:
> >>
> >> We've used Samsung 840 Pro's on FreeBSD with ZFS for a long time (which
> has TRIM enabled by default) so as far unless this has been broken on a FW
> or HW version we've not used then I have no reason to believe we're
> effected by this issue at this time.
> >
> > I was using 840 pros for zfs on freebsd 9.3 , 10.1 for 2 years with no
> issues . It was mostly for archival video storage and used as l2arc .
> >
> > I am working with  omnios and smartos (illumos / opensolaris) almost
> exclusively with zpools on ssds of various vendors and I haven't see this
> issue or similar issues .
> >
> > I am still using 4 840ev on a 10.1 zfs box for the pool , and one for a
> l2arc and it appears to be working as expected .
> >
> > For what my opinion is worth of this was some weird hardware bug , it
> wouldn't just effect Ubuntu. I think Ubuntu or better said the culture of
> Ubuntu might have a hand in this blog post .
> >
> >>
> >> Sent from my iPad
> >>
> >> On 17 Jun 2015, at 15:58, Mark Martinec <Mark.Martinec+freebsd at ijs.si>
> wrote:
> >>
> >>>>> On 16 Jun 2015, at 18:51, grarpamp <grarpamp at gmail.com> wrote:
> >>>>> https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/
> >>>>>
> https://github.com/torvalds/linux/blob/e64f638483a21105c7ce330d543fa1f1c35b5bc7/drivers/ata/libata-core.c#L4109-L4286
> >>>>>
> http://www.aerospike.com/docs/operations/plan/ssd/ssd_certification.html
> >>>
> >>> steven at multiplay.co.uk wrote:
> >>>> This issue centers around queued TRIM requests at the ATA layer, which
> >>>> is an extension that allows NCQ support for TRIM in the SATA 3.1 spec.
> >>>> This is not something FreeBSD currently supports so is unaffected by
> >>>> the issue at this time.
> >>>
> >>> Are you sure? The article explicitly states they were not using
> >>> queued TRIM:
> >>>
> >>> | A lot of discussions started pointing out that the issue is related
> >>> | to the newly introduced queued TRIM. This is not correct. The TRIM
> >>> | on our drives is un-queued and the issue we have found is not related
> >>> | to the latest changes in the Linux Kernel to disable this features.
> >>>
> >>>
> >>> Mark
> >>> _______________________________________________
> >>> freebsd-fs at freebsd.org mailing list
> >>> http://lists.freebsd.org/mailman/listinfo/freebsd-fs
> >>> To unsubscribe, send any mail to "freebsd-fs-unsubscribe at freebsd.org"
> >> _______________________________________________
> >> freebsd-fs at freebsd.org mailing list
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> >
> >
> > ---
> > Mark Saad | nonesuch at longcount.org
>



-- 
mark saad | nonesuch at longcount.org