Use software RAID where drives are NFS mounts???

This may sound crazy... but can I use software RAID to create an array
of drives where the drives are NFS-mounted over the network (instead of
locally connected)?

I realize such a proposition is risk-heavy. But is it possible with
currently available tools?

In comp.os.linux.misc David Filmer <(E-Mail Removed)> wrote:
> This may sound crazy... but can I use software RAID to create an array
> of drives where the drives are NFS-mounted over the network (instead of
> locally connected)?

No. You want nbd or enbd, not nfs. Nfs is a filesystem, not a device.

> I realize such a proposition is risk-heavy. But is it possible with
> currently available tools?

Not really, no. But then you don't want what you say you want. You mean
"network attached disk", yet you are saying "networked file system". The
two are different.

Peter

(E-Mail Removed) (Peter T. Breuer) écrivait
news:jlcrd2-(E-Mail Removed):

> In comp.os.linux.misc David Filmer
> <(E-Mail Removed)> wrote:
>> This may sound crazy... but can I use software RAID to create an
>> array of drives where the drives are NFS-mounted over the network
>> (instead of locally connected)?
>
> No. You want nbd or enbd, not nfs. Nfs is a filesystem, not a device.

If you want to be "fun", you may try to use a large file on the nfs
filesystem and mount using the loop device in your raid array.

I said "to be fun", not "to be serious".


>> I realize such a proposition is risk-heavy. But is it possible with
>> currently available tools?
>
> Not really, no. But then you don't want what you say you want. You
> mean "network attached disk", yet you are saying "networked file
> system". The two are different.

Yes, what is your purpose indead ? You wan to mount a copy of the same
data from two replicated nfs server ?

Regards

In comp.os.linux.misc Antoine EMERIT <(E-Mail Removed)> wrote:
> (E-Mail Removed) (Peter T. Breuer) ?crivait
> news:jlcrd2-(E-Mail Removed):
>
> > In comp.os.linux.misc David Filmer
> > <(E-Mail Removed)> wrote:
> >> This may sound crazy... but can I use software RAID to create an
> >> array of drives where the drives are NFS-mounted over the network
> >> (instead of locally connected)?
> >
> > No. You want nbd or enbd, not nfs. Nfs is a filesystem, not a device.
>
> If you want to be "fun", you may try to use a large file on the nfs
> filesystem and mount using the loop device in your raid array.

Won't work. Or at least loop over nfs never used to work - if it works
now I would be both delighted and surprised.

> I said "to be fun", not "to be serious".

Well, I don't really see the difference ... oh, you are thinking of
speed, reliability, etc? OK, yes, that would be "fun".

> > Not really, no. But then you don't want what you say you want. You
> > mean "network attached disk", yet you are saying "networked file
> > system". The two are different.
>
> Yes, what is your purpose indead ? You wan to mount a copy of the same
> data from two replicated nfs server ?

He wanted what he said: "RAID over several remote disks (instead of
local disks)".

Peter