Re: FreeBSD 10 and zfsd

On 2013-10-10 15:59, O. Hartmann wrote:
> On Thu, 10 Oct 2013 13:41:06 -0500
> Mark Felder <feld_at_FreeBSD.org> wrote:
>
>>
>> On Thu, Oct 10, 2013, at 12:40, Allan Jude wrote:
>>> On 2013-10-10 13:26, Alan Somers wrote:
>>>> On Thu, Oct 10, 2013 at 11:24 AM, Allan Jude
>>>> <freebsd_at_allanjude.com> wrote:
>>>>> On 2013-10-10 12:13, Mark Felder wrote:
>>>>>> On Thu, Oct 10, 2013, at 10:24, Alan Somers wrote:
>>>>>>> On Thu, Oct 10, 2013 at 8:19 AM, Johan Hendriks
>>>>>>> <joh.hendriks_at_gmail.com> wrote:
>>>>>>>> When i started using ZFS on FreeBSD I quickly found out that
>>>>>>>> hot spares are not possible on FreeBSD.
>>>>>>>> I was told that with zfsd it should be possible and that it
>>>>>>>> would be included in FreeBSD 10.
>>>>>>>>
>>>>>>>> Is there some info about the zfsd function and how it could
>>>>>>>> be used?
>>>>>>> zfsd is currently not in FreeBSD/head and won't make it into
>>>>>>> 10, but you can still get the source code from its project
>>>>>>> branch.  It's being used in production by at least two
>>>>>>> companies.
>>>>>>>
>>>>>> So FreeBSD is going to have inferior ZFS management compared to
>>>>>> Solaris/Illumos/etc for another 2+ years? Why are things like
>>>>>> this allowed to miss releases?
>>>>>> _______________________________________________
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>>>>> ZFSd was a big topic of discussion at the EuroBSDCon 2013 dev
>>>>> summit (3 weeks ago). There is a lot of collaboration going on,
>>>>> to bring in some work done by vendors like SpectraLogics. This
>>>>> is the type of feature that can be assed in 10.1, it won't have
>>>>> to wait for 11.
>>>>>
>>>>> You can see Robert Watsons talk "How FreeBSD Works" to see why
>>>>> releases are based on date, rather than on feature completion
>>>>> (because things are never "finished")
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Allan Jude
>>>>>
>>>>> _______________________________________________
>>>>> freebsd-current_at_freebsd.org mailing list
>>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-current
>>>>> To unsubscribe, send any mail to
>>>>> "freebsd-current-unsubscribe_at_freebsd.org"
>>>> Due to popular demand, I have located a round toit.  I'm currently
>>>> working on rebasing the zfsd project branch to head, after which
>>>> I'll push SpectraLogic's recent changes.
>>> See, all you have to do is complain loudly enough :p
>>>
>> I was sad more than anything. I'd been waiting for zfsd since the
>> project was announced. :-) I'm glad to know we won't have to wait
>> until 11.0.
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> Ha!
>
> Very funny. I created a RAIDZ1 pool and by reading the man page for
> zpool, which states precisely how to create a hot spare for a given
> pool. I wasn't aware until now that this action was useless, and even
> dangerous. Well, bravo, I must admit, the man page does not give any
> kind of warning that one can not rely on a hot spare.
>
> oh
The ZFS spare functinality basically just marks the drive as a spare, so
you as the admin know what drive to use when replacement time comes

I've been working on the handbook section on ZFS and made certain to
mention that, I'll have to look at improving the man page as well, but
as far as I know, the man page is imported from IllumOS, where spares do
work.

ZFSd is important and I hope to see more movement on it soon.

-- 
Allan Jude