[Gluster-users] Self healing metadata info

Java Pro jservletpro at gmail.com
Fri Jan 25 18:26:08 UTC 2013


Patric,

Thank you very much. I will do some testing on the index file, the document
is very helpful to understand the technique and the robustness of self
healing.

JPro


On Friday, January 25, 2013, Patric Uebele wrote:

> Hi JPro,
>
> perhaps the attached doc does explain it a bit.
>
> Best regards,
>
> Patric
>
> On Fri, 2013-01-25 at 01:26 -0500, Java Pro wrote:
> > Hi,
> >
> >
> > If a brick is down and comes back up later, how does Glusterfs know
> > which files in this brick need to be 'self-healed'?
> >
> >
> > Since the metadata of whether to 'heal' is stored as an xattr in a
> > replica on other bricks. Does Glusterfs scan these files on the other
> > bricks to see if one is "accusing" its replica and therefore need to
> > "heal" its replica?
> >
> >
> > In short, does Glusterfs keep a record of "writes" to a brick when a
> > brick is down and apply these "writes" to the brick when its backup?
> >
> >
> >
> >
> > Thanks,
> > JPro
> >
> > _______________________________________________
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>
> --
> Patric Uebele
> Solution Architect Storage
>
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