Re: PFS mirroring insted of RAID Improved set up - need comments.

[Siju George <sgeorge.ml@xxxxxxxxx>]

On Sun, Mar 28, 2010 at 8:23 PM, Justin C. Sherrill
<justin@shiningsilence.com> wrote:
> On Sun, March 28, 2010 9:06 am, Siju George wrote:
>
>> 5) After Installing Updates to dfly system or pacakges on the first
>> disk rsync from / to the second Disk using the --exclude option to
>> exclude home, tmp, usr, var, pkg directories ( PFSes )
>
> Why not have a UFS /boot and make / Hammer too, so that you can avoid
> rsyncing almost entirely?
>

I guess you are talking about putting / on a PFS for mirroring?
Last time I looked the installer didnt have an option to create both
UFS and Hammer partitions it was either UFS or Hammer.
Let me see if the installer has improved to accomodate this option.
But since / contains the fstab how will you mount / if it is on a PFS?
How can we ask the System to mount / from a PFS?

I've never tried it, so I don't know if it
> would work, but it would be cool if it did.
>

:-)

>> I guess mirroring will not spread file system corruption on first disk
>> to the second Disk as in RAID ?
>
> If it's a hardware problem, it would copy the errors but not the problem.
> If you still had "good" data in an older snapshot on the slave, you would
> be fine.
>

Thanks for the clarification :-)

--Siju