Re: Integration of SCST in the mainstream Linux kernel

Jeff Garzik
2008-02-06T14:21:28Z

Bart Van Assche wrote:
> 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.

Hence the diskless root fs configuration I referred to in multiple
emails... whoopee, you reinvented NFS root with quotas :)

Jeff