On Wed, May 3, 2017 at 3:41 PM, Raghavendra Talur <rtalur@xxxxxxxxxx> wrote:
On Tue, May 2, 2017 at 8:46 PM, Nithya Balachandran <nbalacha@xxxxxxxxxx> wrote:
>
>
> On 2 May 2017 at 16:59, Shyam <srangana@xxxxxxxxxx> wrote:
>>
>> Talur,
>>
>> Please wait for this fix before releasing 3.10.2.
>>
>> We will take in the change to either prevent add-brick in
>> sharded+distrbuted volumes, or throw a warning and force the use of --force
>> to execute this.
Agreed, I have filed bug and marked as blocker for 3.10.2.
https://bugzilla.redhat.com/show_bug.cgi?id=1447608
>>
> IIUC, the problem is less the add brick operation and more the
> rebalance/fix-layout. It is those that need to be prevented (as someone
> could trigger those without an add-brick).
Yes, that problem seems to be with fix-layout/rebalance and not add-brick.
However, depending on how users have arranged their dir structure, a
add-brick without a fix-layout might be useless for them.
I also had a look at the code to see if I can do the cli/glusterd
change myself. However, sharding is enabled just as a xlator and not
added to glusterd_volinfo_t.
If someone from dht team could work with glusterd team here it would
fix the issue faster.
Action item on Nithya/Atin to assign bug 1447608 to someone. I will
wait for the fix for 3.10.2.
Fix is up @ https://review.gluster.org/#/c/17160/ . The only thing which we'd need to decide (and are debating on) is that should we bypass this validation with rebalance start force or not. What do others think?
Thanks,
Raghavendra Talur
>
> Nithya
>>
>> Let's get a bug going, and not wait for someone to report it in bugzilla,
>> and also mark it as blocking 3.10.2 release tracker bug.
>>
>> Thanks,
>> Shyam
>>
>> On 05/02/2017 06:20 AM, Pranith Kumar Karampuri wrote:
>>>
>>>
>>>
>>> On Tue, May 2, 2017 at 9:16 AM, Pranith Kumar Karampuri
>>> <pkarampu@xxxxxxxxxx <mailto:pkarampu@xxxxxxxxxx>> wrote:
>>>
>>> Yeah it is a good idea. I asked him to raise a bug and we can move
>>> forward with it.
>>>
>>>
>>> +Raghavendra/Nitya who can help with the fix.
>>>
>>>
>>>
>>> On Mon, May 1, 2017 at 9:07 PM, Joe Julian <joe@xxxxxxxxxxxxxxxx
>>> <mailto:joe@xxxxxxxxxxxxxxxx>> wrote:
>>>
>>>
>>> On 04/30/2017 01:13 AM, lemonnierk@xxxxxxxxx
>>> <mailto:lemonnierk@xxxxxxxxx> 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.
>>> _______________________________________________
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>>> http://lists.gluster.org/mailman/listinfo/gluster-devel
>>> <http://lists.gluster.org/mailman/listinfo/gluster-devel >
>>>
>>>
>>>
>>>
>>> --
>>> Pranith
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
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>>>
>>>
>>>
>>>
>>> --
>>> Pranith
>>>
>>>
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>>>
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>
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