Hello List,
I'm in the process of implementing a new mail server environment from
scratch. I was wondering, what mailbox format is recommended?
I have been using maildir format for my other projects. I would like to use
some format that provides Single Instance Storage.
I'm using postfix 2.11
On Fri, Jan 22, 2010 at 09:03:42PM -0500, Charles Sprickman wrote:
On Fri, 22 Jan 2010, Frank Cusack wrote:
On January 22, 2010 11:05:22 PM +0200 Timo Sirainen t...@iki.fi wrote:
Dunno about zfs, but I've heard that at least in one NetApp installation
deduplication was way too heavyweight.
In the future, it would be cool if there were a mailbox format (dbox2?)
where mail headers and each mime part were stored in separate files.
This would enable the zfs dedup feature to be used to maximum benefit.
In the zfs filesystem, there is a dedup feature which stores only 1 copy
of
On Fri, 2010-01-22 at 23:05 +0200, Timo Sirainen wrote:
It would also be possible to already write such Maildir feature. Someone
on this list already wrote header/body separation code, which was pretty
easy to do with a plugin.
Someone = Alex Baule
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On January 22, 2010 11:05:22 PM +0200 Timo Sirainen t...@iki.fi wrote:
Dunno about zfs, but I've heard that at least in one NetApp installation
deduplication was way too heavyweight.
zfs dedup is pretty resources intensive -- for writes. For mail I
suspect reads overwhelm writes?
-frank
On Fri, 2010-01-22 at 16:09 -0500, Frank Cusack wrote:
On January 22, 2010 11:05:22 PM +0200 Timo Sirainen t...@iki.fi wrote:
Dunno about zfs, but I've heard that at least in one NetApp installation
deduplication was way too heavyweight.
zfs dedup is pretty resources intensive -- for
On Fri, 2010-01-22 at 23:12 +0200, Timo Sirainen wrote:
I don't have any evidence, but my logic goes like: Mail is written to
disk once. Most users use a single client, which downloads the message
once. Or maybe they're using webmail, and they read the same message
approximately once (or
On January 22, 2010 11:05:22 PM +0200 Timo Sirainen t...@iki.fi wrote:
On Fri, 2010-01-22 at 15:53 -0500, Frank Cusack wrote:
In the future, it would be cool if there were a mailbox format (dbox2?)
where mail headers and each mime part were stored in separate files.
This would enable the zfs
On 22.1.2010, at 23.14, Frank Cusack wrote:
This is more or less what dbox's single instance storage is going to do.
Maybe in half a year or so.. And you don't even need filesystem
deduplication feature. :)
But if the mail system has to handle it, it only knows about mails
written at the
On 22.1.2010, at 23.39, Frank Cusack wrote:
On January 22, 2010 11:21:09 PM +0200 Timo Sirainen t...@iki.fi wrote:
Or will there be a global index?
Yes. That's what dbox SIS is about. You have a global repository of
(large) MIME parts, indexed by their SHA1 sum (or something).
In the
On January 22, 2010 11:44:07 PM +0200 Timo Sirainen t...@iki.fi wrote:
On 22.1.2010, at 23.39, Frank Cusack wrote:
On January 22, 2010 11:21:09 PM +0200 Timo Sirainen t...@iki.fi wrote:
Or will there be a global index?
Yes. That's what dbox SIS is about. You have a global repository of
On Fri, 22 Jan 2010, Frank Cusack wrote:
On January 22, 2010 11:05:22 PM +0200 Timo Sirainen t...@iki.fi wrote:
Dunno about zfs, but I've heard that at least in one NetApp installation
deduplication was way too heavyweight.
zfs dedup is pretty resources intensive -- for writes. For mail I
On 11/12/2009 12:42 AM Pascal Volk wrote:
On 11/11/2009 06:47 PM Timo Sirainen wrote:
example:
dsync -e 'dsync -r -O -o mail_location=maildir:~/Maildir'
For the archive:
I'm using virtual users, without system access. So I had to add
'-u user' to both dsync commands. It was also necessary
On 11/11/2009 06:47 PM Timo Sirainen wrote:
convert-tool is going away. dsync is the new way to do conversion. For
example:
dsync -e 'dsync -r -O -o mail_location=maildir:~/Maildir'
For the archive:
I'm using virtual users, without system access. So I had to add
'-u user' to both dsync
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