Can I change the device of the "/" mount point at boot time.

[Daniel O'Connor]

On Tue, 15 Jul 2008, Tapan Chaudhari wrote:
>    Thanks Deniel for the reply. I am aware of the fact you mentioned
> and will keep in mind.
> Well what i am trying to achieve is a simple thing to write an
> interception driver to catch all the i/os going to a particular
> device, do some manipulations on it and than let it through to the
> original device. Well as you mentioned about geom, I have recently
> posted a mail on GEOM mailing list as I could not find geom doing
> interception, the discussion is still on (You can see the mails with
> subject line "Can GEOM be used to intercept the I/o calls to an
> existing mounted device?"). Any sugessuions on interception driver
> will be helpful?

My first question would be "Why do you want to do that?"

> As an interception driver is not possible, for time being I am going
> towards the redirection concept which will require a reboot and
> changing the devices on the mount points. For redirection driver, I
> dont think I will need geom. I can directly create a new device.
> Rather I think it would be an overhead using geom for a virtual
> device.
> Any thoughts on both the issues?

I think you'd have a lower overhead and much less hassle writing a GEOM 
class and using that.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: This is a digitally signed message part.
Url : http://lists.freebsd.org/pipermail/freebsd-hackers/attachments/20080715/c9d349d2/attachment.pgp