Il 03-01-2020 19:51 @lbutlr ha scritto:

On 03 Jan 2020, at 06:16, Gionatan Danti <g.danti@assyoma.it> wrote:

...

What surprises me is that hard-linking identical messages saves so much space, yet nobody seems to asking/using such feature. So, either a) few cares about saving space or b) few are using the pigeonhole plugin. And both a) and b) seems unlikely...

Or

c) we see nearly no truly identical messages.

Well, sure, this is another possibility.

However, on all mailserver which I manage, a significant portion of total emails are messages sent to groups/lists rather than single recipient. Cyrus and other proprietary mailservers (eg: CommuniGate Pro) use unix shared storage (aka hardlink) to avoid copying the message to multiple inboxes. This is especially valuable when a) large groups exists or b) a large message is sent to groups/lists.

Please also note that, when not using Pigeonhole, Dovecot *does* use hardlink for messages sent to multiple recipients and/or groups. It is only when Pigeonhole is active that the hardlinking does not happen.

Thanks.

-- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8