Hello all,

On Thu, Jan 18, 2001 at 02:31:54PM -0800, [EMAIL PROTECTED] wrote:
> 
> hi ya hermann
> 
> > > > > Try to mount mach1 first, if that fails, try mach2
> > > > > Backup  -fstype=nfs     mach1,mach2:/Backup
> > > > > 
> > > > > Is it supported on linux.
> > > > > 
> > > > 
> > > > No.  Please ask the author of mount(8) to support it if you want it added
> > > > (it's easy enough to make autofs support it, but I think it belongs in
> > > > mount.)
> > > > 
> > > >         -hpa
> > 
> > Amd supports this - Isn't that in your Autofs/Amd FAQ, Alvin ?
> 
> if the mount does not support it than autofs wont be able to...
> 
> if amd uses its own mounting mechanism that i guess its possible...
>  
> - i havent used amd in several yrs now since i changed over to autofs
> 
> and am still interested but not looking for failover mountings
> strategies for mailservers, webservers, home servers etc...etc..
>       - guess nowdays its called "high availability"

failover is not really supported by amd - in the first place I thought the
question was for multiple mount support - if one server is down while
try to mount, you will choose another. And as amd uses symlinks it even
can point processes opening a file with an absolute path to another server
if the first hangs (amd uses ping  to determine if  a server is up and
changes the link if the server goes down - unfortuanately, if only the nfsd
is down that gives a wrong clue). When a file already is open the process
will hang - and such a failover could only be done inside nfs (i.e.,  not
on linux at the moment). Of course this works only good with ro mounted filesystems.

For more Doku and links to the mailinglists of amd look at the homepage:
http://www.cs.columbia.edu/~ezk/am-utils/

Greetings

  Hermann

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