[Gluster-users] Difference in transltors and a question about live heal

[Basavanagowda Kanur]

Bonding is just one particular case which HA handles. There are many other
applications of HA.
Suppose you have 3 servers each exporting a storage brick and also an AFR
volume of bricks from three servers, you can HA all the 3 AFR subvolumes and
you will have availability of glusterfs till the last server is reachable.

--
Gowda

2009/2/23 William Hanwoody <hanwoody at gmail.com>

>
> > On Sun, Feb 22, 2009 at 11:06 PM, Jeffry Molanus
> >
> > <jeffry.molanus at gmail.com>wrote:
> > > On Sun, 2009-02-22 at 21:34 +0530, Basavanagowda Kanur wrote:
> > > > Davide,
> > > >   Replies inline.
> > > >
> > > > On Sun, Feb 22, 2009 at 2:24 PM, Davide D'Amico
> > > > <davide.damico at gmail.com> wrote:
> > > >         Hi,
> > > >         I was looking for a scalable-ha nfs storage solution and
> > > >         glusterfs seems to be
> > > >         the only out there :-)
> > > >
> > > >         I was reading the documentation and I cannot find the
> > > >         difference
> > > >         between "Replicate
> > > >         Translator" and "HA Translator": the latest seems to be a
> > > >         particular case of the
> > > >         first one when I have only two bricks. Is it right?
> > > > Replicate translator provides replication feature, whereas HA (High
> > > > Availability) translator provides high availability, HA does not do
> > > > any replication.
> > >
> > > Care to explain how it does work then? How can a file be HA if the
> > > server that went down is not replicated?
> >
> > HA is useful when you have multiple network interconnect to the server
> and
> > you want glusterfs to continue working seemlessly, then you would use HA.
> > HA fails over to secondary interconnect, if primary fails.
>
> I think the name of "HA" is mismatch. For replication is also "HA" when one
> of
> storage node went down.
>
> HA of gluster is more like  bonding of multiple network interface，and I
> think
> it is no need for glusterfs, because we can do bonding!!
>
> >
> > > >         I intend to create a scalable nfs cluster, so I can add
> > > >         storage nodes
> > > >         to increase
> > > >         storage size: have I to use unify on top of AFR translator
> > > >         (i.e. unify
> > > >         on a replicated
> > > >         volume?).
> > > > you can use 'distribute' (formerly DHT) translator over AFR.
> > > >
> > > >
> > > >
> > > >         I've read that glusterfs has problems with self-healing and
> > > >         opened
> > > >         files: is it true?
> > > >
> > > >
> > > >         Thanks in advance,
> > > >
> > > >         --
> > > >         d.
> > > >
> > > >         _______________________________________________
> > > >         Gluster-users mailing list
> > > >         Gluster-users at gluster.org
> > > >         http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users
> > > >
> > > >
> > > >
> > > > --
> > > > Gowda
> > > > _______________________________________________
> > > > Gluster-users mailing list
> > > > Gluster-users at gluster.org
> > > > http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users
>
>
>
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