Re: Disk simulator driver

Sean Bruno
2006-10-30T00:08:29Z

On Sun, 2006-10-29 at 17:02 -0600, Matt Domsch wrote:
> On Sun, Oct 29, 2006 at 12:19:19PM -0800, Sean Bruno wrote:
> > Is there a project/driver that would take a disk/file/lvm partition as
> > an argument(/dev/sda, /tmp/my_big_file.bin /dev/Mapper/MYLVMPART eg.)
> > and then create a new /dev entry that could be read/written to as though
> > it were a disk?
> >
> > I think I want to look at sg, but I wasn't sure if that is what I want.
> >
> > Just poking around for fun and education.
> >
> > Sean
>
> You want something different than losetup and /dev/loop ?
> e.g. something you can issue disk-like ioctls to?
>
Precisely. I am interested in capturing the data that would be sent to
the device and copying it somewhere before it is written to the disk.
Kind of like the way target mode drivers accept a file/disk as a target
for their operations.

Sean