[Dovecot] Maildir feature I'd like to see - SSD for newer messages
marc at perkel.com
Thu Dec 23 22:13:38 EET 2010
On 12/23/2010 11:37 AM, Javier de Miguel Rodríguez wrote:
> On Thu, 23 Dec 2010 11:27:45 -0800, Marc Perkel <marc at 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:
Now suppose there were a way to join these drives so that you could
access them as a single 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
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