[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #9 from Martin Steigerwald --- Bug 389638 - When moving imported maildir folders, before they are completely written to disk, they arrive empty, losing all the mails. may be related. -- You are receiving this mail

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 Martin Steigerwald changed: What|Removed |Added Ever confirmed|0 |1

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #8 from Martin Steigerwald --- During akonadictl fsck: Moved 15029 unreferenced files to lost+found. Also it only found about 21000 files in there at all (output scrolled out of buffer, but I bet it was 15029+6371).

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #7 from Martin Steigerwald --- Okay, I now stopped Akonadi after more than one hour of it trying to move that folder around. So far it didn´t move a single mail file. They are all still here:

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #6 from Martin Steigerwald --- I just confirmed this again with KMail 5.2.3, KDEPIM and Akonadi 16.04.3. Its still moving that 5+ mail btrfs mailinglist folder around and its working on that since way more than half

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #5 from Martin Steigerwald --- https://phabricator.kde.org/T630 is somewhat related. -- You are receiving this mail because: You are watching all bug changes.

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 Simon Andric changed: What|Removed |Added CC||simonandr...@gmail.com

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #4 from Martin Steigerwald --- I see how it is challenging to solve this within current Akonadi design. If using a folder ID that is just stored within the database, it won´t detect manual moves. But well, it could

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #3 from Martin Steigerwald --- Okay, it took about 10 minutes and several GiB of disk traffic, but it seems it is now done. Folders at their new location do not yet display amount of unread mails and I expect Akonadi to

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #2 from Martin Steigerwald --- And yeah, I bet I know what its doing: Its removing all the stale mails entries from the mysqld database and then adding them again at the new location. Also KMail still showed the folders

[Akonadi] [Bug 364114] moving a folder within one maildir resource is extremely slow and inefficient

https://bugs.kde.org/show_bug.cgi?id=364114 --- Comment #1 from Martin Steigerwald --- Today I tried to be clever: - I just stopped Akonadi and waited till it was gone (including mysqld process). - Then I manually moved several large folders with LKML mails, one with