[Gluster-users] Rebalance question

[Anand Avati]

Fred,
Questions regarding RHS (Red Hat Storage) are best asked with Red Hat
Support rather than the community. That being said, upgrading from one
version to another does not alter hash values / layouts and no new
linkfiles will be created because of the upgrade. You will see new hash
values and linkfiles if you add servers and run a simple rebalance. The
recommended way to eliminate linkfiles is to perform a full rebalance which
involves data migration.

Avati


On Wed, Sep 4, 2013 at 5:17 AM, Fred van Zwieten <fvzwieten at vxcompany.com>wrote:

> Nobody?
>
>
> Met vriendelijke groeten,
> *
> Fred van Zwieten
> *
> *Enterprise Open Source Services*
> *
> Consultant*
> *(woensdags afwezig)*
>
> *VX Company IT Services B.V.*
> *T* (035) 539 09 50 mobiel (06) 41 68 28 48
> *F* (035) 539 09 08
> *E* fvzwieten at vxcompany.com
> *I*  www.vxcompany.com
>
> Seeing, contrary to popular wisdom, isn’t believing. It’s where belief
> stops, because it isn’t needed any more.. (Terry Pratchett)
>
>
> On Mon, Sep 2, 2013 at 1:06 PM, Fred van Zwieten <fvzwieten at vxcompany.com>wrote:
>
>> Hi,
>>
>>>
>>> I have a question. I am on RHS 2.0 Update 4 (will soon go to 2.1 when
>>> it's out) and I have a distributed volume (across 7 nodes) where a fair
>>> amount of directory moves take place (or directory renames). AFAIK this
>>> will most likely give new hash values and so all data needs to be moved
>>> around the pool. Gluster does not do this immediately, but instead creates
>>> a link from the new location to the old location.
>>>
>>> Questions:
>>> 1. Is there a gluster command to investigate the amount of these links
>>> (How "dirty" is my volume)
>>> 2. What command to I use to fix this. I think a "simple" rebalance would
>>> do it.
>>>
>>> I would like to create a cron job that checks the amount of links and,
>>> if above a certain level, it will do a rebalance. Alternatively I could do
>>> a fixed periodic rebalance. And I have as yet no idea on what level (what
>>> amount of found links) a rebalance is necessary.
>>>
>>> Any thoughts, hints, etc?
>>>
>>> Fred
>>>
>>> Seeing, contrary to popular wisdom, isn’t believing. It’s where belief
>>> stops, because it isn’t needed any more.. (Terry Pratchett)
>>>
>>
>>
>
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