++ 14/12/05 20:19 +0100 - <Stephan Wiesand>:
Hey Stephen,
> Hi,
>
> On Wed, 14 Dec 2005, John A. Goebel wrote:
>
> >++ 14/12/05 18:23 +0000 - <John Rowe>:
> >
> >Hi,
> >
> >>>What do you want to do with this filesystem?
> >>
> >>Aways a good question. I have a bunch of nonidentical PCs running SL4.x
> >>connected by gigabit. People can log into any of them and see their home
> >>space. Currently I do this by having two of them as file servers, each
> >>with a mirrored disk pair. Ideally I would like to have a single virtual
> >>"/home" filesystem which I could add physical disks to and which is
> >>resilient to any one node being down.
> >
> >I don't know what your load is like, but can't NFS do this for you and LVM?
> >
> >For the requirement of serving $HOME, NFS is a classic. Although I haven't
> >tried it, NFS 4 has failover. Maybe someone else has a better suggestion?
>
> Even if that's implemented now (is it?), wouldn't you still need some
> (cluster) filesystem shared between the servers?
Yes, that's right. Years ago, when I had to do this, I used Kimberlite. Sorry,
I don't know the current resources.
I like the simple solution if it works, so here a recipe:
http://www.linux-ha.org/HaNFS
> AFS won't do the job either (no read-write replication). It would be
> possible to recover from a failed node quickly and transparent to the
> client, though.
>
> The most promising solution in such a scenario to me seems to be something
> like that described in
>
> http://www.rhic.bnl.gov/hepix/talks/041020am/miers.pdf
>
> Not trivial to set up, and I wonder how lock recovery would work, but the
> best low cost solution I know of.
Also, you might want to poke around Linux HA site. The LAN mirror section
especially:
http://www.linux-ha.org/RelatedTechnologies_2fLanMirroring
John
> Stephan
>
> >For the requirement of disk management, LVM should do the trick. There are
> >a
> >bunch of papers online about using LVM/Raid. You can load and configure
> >using
> >kickstart. I have a ks.cfg that I can send to you if you interested, but
> >basically I used a version from the net and modified it for my use.
> >
> >Sounds like you don't need too fancy a configuration.
> >
> >>Needless to say, there's no budget for any fancy hardware.
> >
> >I know that feeling.
> >
> >John
> >
> >>John
> >
> >##############################################
> ># John Goebel <jgoebel(at)slac.stanford.edu> #
> ># Stanford Linear Accelerator Center #
> ># 2575 Sand Hill Road, Menlo Park, CA 94025 #
> >############################################ #
> >
>
> --
>
> ----------------------------------------------------
> | Stephan Wiesand | |
> | | |
> | DESY - DV - | phone +49 33762 7 7370 |
> | Platanenallee 6 | fax +49 33762 7 7216 |
> | 15738 Zeuthen | |
> | Germany | |
> ----------------------------------------------------
##############################################
# John Goebel <jgoebel(at)slac.stanford.edu> #
# Stanford Linear Accelerator Center #
# 2575 Sand Hill Road, Menlo Park, CA 94025 #
############################################ #
|
