On 12/23/2010 11:37 AM, Javier de Miguel Rodríguez wrote:
On Thu, 23 Dec 2010 11:27:45 -0800, Marc Perkel <m...@perkel.com> wrote:
SSD drives are very fast but expensive. So I have a crude idea that
I'd like to see. May not be practical but would like to get some
thoughts on it.
You are asking about automatic storage tiering. You can get what you
want in a transparant way, independient
of Dovecot. Some storage vendor (search for Fully Automated Storage
Tiering - FAST from EMC or Compellent, recently
bought by Dell) get what you are asking for.
If the budget is low, you can achive a "poor´s man" storage tiering
with some shell scripting, cron and soft links; Or you can look at
http://code.google.com/p/fscops/ for a more mature implementation. Or
just use ZFS and "hybrid storage pools"
I wonder if there's any way to do this. Say there are two different
storage devices mounted as follows:
/slow-hard-drive/email-directory
/fast-ssd-drive/email-directory
Now suppose there were a way to join these drives so that you could
access them as a single directory:
/joined-drive/email-directory
The Dovecot could see the joined drive but my backup/archiving scripts
could see the drives independently and move old data from the fast
drives to the slow drives.
I think back in the old DOS days you could do that. Is there a way in
Linux to do the same thing? Join two directories so as to make them look
like one?
