Akonadi 和通訊錄

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這裡的資料由KDE-PIM 開發人員 Tobias Koenig 提供。

一些定義

真實數據（real data）我們指的像是聯繫人或事件這類數據。這些數據或是存儲在「群件服務器（groupware server）」，或是存儲在本地文件中。具體存儲的位置取決於你使用的資源，比如，個人聯繫人（Personal Contacts）資源就是把數據存儲到$HOME/.local/share/contacts，同時VCard File 資源（已經不推薦使用了）則存儲數據到$HOME/.kde/share/apps/kabc/std.vcf。

緩存數據（cached data）則是真實數據的副本，放置在數據庫中便於更快速的訪問和作為離線緩存。數據庫還同時保留著用來管理數據的元數據（meta data），Akonadi需要元數據才能正常工作。

設置數據（configuration data）是設定Akonadi 服務器和個別資源的數據。服務器的設置數據可以在$HOME/.config/akonadi 找到，資源的設置數據通常存儲在$HOME/.kde/share/config/akonadi_xyz_resourcerc# (xyz 是資源名而#是其的實例數)。

籌備備份

然後現在是該決定備份什麼樣的數據了。如果你想備份"真實數據（real data）"，這東西又得具體看你設定的資源……要是你用的是「群件服務器（groupware server）」，備份這事應該在那邊搞定。對於聯繫人，你需要的通常是$HOME/.local/share/contacts 那的文件。

The Akonadi tray icon offers you a backup and restore function. That backs up the "cache data" which might not include all of your data! It can be helpful if you want to clone a system 1:1, then you can copy the cached data together with the real data and the configuration, so you don't have to load the data again from the sources (e.g. groupware server).

Examining your Resources

KRunner offers you Akonadi Resource Configuration, or you can access this through the Akonadi tray icon -> Configure. You may find several resources set up. You may find one labelled

Address Book - No KDE address book plugin configured yet.

That's the old compatibility bridge (possibly created by the migrator tool). You should remove this one!

std.vcf - Ready

This is the VCard File Resource which points to $HOME/.kde/share/apps/kabc/std.vcf per default. It is not recommended that you use that one, as it doesn't share the benefit of Akonadi.

Personal Contacts - Offline

That's the preferred resource for your local contacts which points to

$HOME/.local/share/contacts

Note that this may say "Offline" when in fact you are using it. This is a display bug, and can safely be ignored.

And when more components use Akonadi?

When the rest of the components move to Akonadi, will all the data be under ~/.local/share? That should make backup easy. Well, contacts and mails are stored there now, I don't know what the plan for events/todos is, but it would make sense to store them there as well. We'll keep it in mind when discussion pops up!