Can you explain your use case a little more?  What benefit do you get from
feature flags, if you do not want to enable any features?

I would recommend not worrying about this, and just enabling the specific
features that you want, when you want them, with "zpool set feature@
....=enabled".

--matt


On Tue, Jun 3, 2014 at 1:05 AM, CurlyMo <curlym...@gmail.com> wrote:

>  Hi All,
>
> I never replied to a mailing list before, but i do want to post an issue
> at open-zfs. I already did a bug report @freebsd, but i believe this is the
> proper place regarding the latest zfs issues.
>
> Basicly the bug i encountered is as follows. If i create a pool like this..
>
> zpool create -d -f test mirror gpt/test1 gpt/test2
>
> All feature flags will be disabled by default, and i can enable those i
> want to use.
>
> However, if i already got a running v28 pool and i want to upgrade to
> v5000. Then there is no way to start with all feature flags disabled. This
> doesn't work.
>
> zpool upgrade -V 5000 test
>
> I opened a topic at the freebsd forum to more precisely describe the issue
> with examples.
> https://forums.freebsd.org/viewtopic.php?f=48&t=46703
>
> I hope this can be fixed soon.
>
> Best regards,
> CurlyMo
>
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