[Gluster-devel] Don't allow data loss via add-brick (was Re: [Gluster-users] Add single server)

[Joe Julian]

On 04/30/2017 01:13 AM, lemonnierk at ulrar.net wrote:
>> So I was a little but luck. If I has all the hardware part, probably i
>> would be firesd after causing data loss by using a software marked as stable
> Yes, we lost our data last year to this bug, and it wasn't a test cluster.
> We still hear from it from our clients to this day.
>
>> Is known that this feature is causing data loss and there is no evidence or
>> no warning in official docs.
>>
> I was (I believe) the first one to run into the bug, it happens and I knew it
> was a risk when installing gluster.
> But since then I didn't see any warnings anywhere except here, I agree
> with you that it should be mentionned in big bold letters on the site.
>
> Might even be worth adding a warning directly on the cli when trying to
> add bricks if sharding is enabled, to make sure no-one will destroy a
> whole cluster for a known bug.

I absolutely agree - or, just disable the ability to add-brick with 
sharding enabled. Losing data should never be allowed.