[Gluster-devel] High availability

[Raghavendra G]

Default timeout is 108 seconds. If you are using afr between Server A and B,
Command completes successfully even if ethernet cable is unplugged from
server A.

On Oct 30, 2007 5:25 PM, CityToo - Benjamin Loire <bloire at citytoo.com>
wrote:

> OK => If I unplug ethernet eth0, /mnt/glusterfs is no responding until I
> plug again the ethernet eth0
>
> I didn't configure transport timeout and if don't plug again ethernet
> eth0, /mnt/glusterfs is no responding ...What is the time-period before
> command complete successfully because I have waiting about 30 secondes !
> Have I to necessarily to configure transport timeout ?
>
> When you say "But after that time-period command should complete
> successfully", is condition to plug again ethernet eth0 ?
>
> If you want say that command should complete successfully after a
> time-period slightly greater than transport timeout without to plug again
> ethernet eth0 (server), have I to use necessarily translator unify with "rr"
> in first before translator AFR, or is translator AFR alone does
> automatically high availability if one sublvolume is down ?


Just AFR alone can provide high availability here.

>
>
> PS: I have only 2 nodes server for my test.
> Should I have 3 nodes server to have high availability if I use AFR with
> option replicate *:2 or should I have high availability too if I have 2
> nodes server with AFR with option replicate *:2 if I unplug ethernet eth0
> server ?


Can you send the glusterfs Specification files? Do you need both the
functionalities of AFR and unify or just high availability (AFR by itself
can provide high availability).


>
> Benjamin LOIRE
>
> Le Mardi 30 Octobre 2007 12:55, Raghavendra G a écrit :
> > Hi Benjamin,
> >
> > It may not be responsive for a period slightly greater than transport
> > timeout. But after that time-period command should complete
> successfully.
> >
> > regards,
> > On Oct 30, 2007 1:27 AM, CityToo - Benjamin Loire <bloire at citytoo.com>
> > wrote:
> >
> > > If I unplug ethernet on server A, /mnt/glusterfs is no responding.
> > > Yet I use unify rr + AFR between server A and server B
> > >
> > > Is it normal for a high availability storage system like glusterfs ?
> > >
> > > Benjamin LOIRE
> > >
> > >
> > > _______________________________________________
> > > Gluster-devel mailing list
> > > Gluster-devel at nongnu.org
> > > http://lists.nongnu.org/mailman/listinfo/gluster-devel
> > >
> >
> >
> >
>
> --
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>
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-- 
Raghavendra G

A centipede was happy quite, until a toad in fun,
Said, "Prey, which leg comes after which?",
This raised his doubts to such a pitch,
He fell flat into the ditch,
Not knowing how to run.
-Anonymous