Re: Patent or not patent a new idea

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tuesday June 26, [email protected] wrote:
> Neil Brown wrote:
> > 
> > Sounds a lot like "RAIF" - ask google for details.
> 
> I did not know about RAIF. RAIF "merges" separate filesystems? That is a
> good idea in itself.
> 
> My idea is for driver that provides a filesystem from image files it
> controls. Because it knows these resources it uses access in tandem to
> attain performance.

???
(reads original description in more detail).

So... the filesystem images are identical in both copies, and the
"interesting" bit is that the image is just a file on some filesystem.

So could I implement your idea by:

  dd if=/dev/zero of=/1/bigfile count=lotsandlots
  dd if=/dev/zero of=/2/bigfile count=lotsandlots
  losetup /dev/loop1 /1/bigfile
  losetup /dev/loop2 /2/bigfile
  mdadm -C /dev/md0 --level=raid1 --raid-disks=2 /dev/loop1 /dev/loop2
  mkfs /dev/md0
  mount /dev/md2 /space

??

Why would you bother?  Well, I do it a lot of code testing, but I
would be hard pressed to make a case for that sort of config in
production.

You said:
>  1) the disks need
>    not be the same size or from the same manufacturer; 2) the supporting code
>    would be cross-platform.

md/raid already works happily with different sized drives from
different manufacturers (for raid1, it only uses as much space as the smaller
drive provides, For raid0 it uses it all).
I don't know what you mean by '2'.

So I still cannot see anything particularly new.  What am I missing?

NeilBrown
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux