Re: Integration of SCST in the mainstream Linux kernel

Bart Van Assche
2008-02-06T10:22:17Z

On Feb 5, 2008 6:50 PM, Jeff Garzik <jeff@garzik.org> wrote:
> For remotely accessing data, iSCSI+fs is quite simply more overhead than
> a networked fs. With iSCSI you are doing
>
> local VFS -> local blkdev -> network
>
> whereas a networked filesystem is
>
> local VFS -> network

There are use cases than can be solved better via iSCSI and a
filesystem than via a network filesystem. One such use case is when
deploying a virtual machine whose data is stored on a network server:
in that case there is only one user of the data (so there are no
locking issues) and filesystem and block device each run in another
operating system: the filesystem runs inside the virtual machine and
iSCSI either runs in the hypervisor or in the native OS.

Bart Van Assche.