[kdepim-users] Updating Kmail folders outside of KMail

Peter peter777 at users.sourceforge.net
Tue Jan 27 03:51:16 GMT 2015

On Mon, 26 Jan 2015 04:24:02 PM Martin Steigerwald wrote:
> Am Montag, 26. Januar 2015, 17:05:36 schrieb Peter:
> > I have several KMail folders that have duplicate emails in them.
> > Hundreds of emails. Rather than go through each one and try and compare
> > the contents, to determine if deletion is required, I can use a few
> > different methods to compare the contents, to find the duplicates.
> > 
> > Tools like fdupes or Beyond compare,etc.
> > 
> > However , I know from past experiences, that if I change a KMail folders
> > contents, outside of KMail (file copy, remove,etc), it does not appear
> > as it is on the hard drive.
> > 
> > No doubt it is the akonadi backend. Can I change a Kmail folder
> > (content) and then issue some command to akonadi ?
> > 
> > Or, is it as simple as "Update folder" ?
> I think Akonadi maildir resource puts Inotify watches on all directories
> to recognize changes there. Back then I did place some mails manually
> there and Akonadi picked it up immediately.

I have found that adding a file manually (outside of KMail) results in the file 
showing up in the KMail folders, however if I change the content outside of 
KMail, it doesn't display the changes in KMail. From memory, even a reboot 
doesn't fix it. It's as though akonadi needs to refresh or similar ?

> If you also use Baloo and have lots of subfolders, maybe Baloo has
> consumed all inotify watches up to the low kernel default limit and then
> you may need to raise it, like this:
> merkaba:~> cat /etc/sysctl.d/inotify.conf
> # martin at merkaba:~> find -type d | wc -l
> # 34515
> #
> # merkaba:/proc/sys/fs/inotify> cat max_user_watches
> # 8192
> fs.inotify.max_user_watches = 200000

I don't (think) I use Baloo. I did try that command here and got a 'No such 
file or directory'
> Basically inotify needs a watch for every folder to monitor, also every
> sub folder.

I have under ~Mail folder - 57,684 files and 2,336 sub-folders, a total of 2.7 

I don't know if file attachments are allowed in this mailing list, but I'll 
attach a file and see what happens. It shows 2 KMail directories, and you can 
see the duplicate emails, matched by CRC and filesize.

If I simply delete the duplicate files on the RHS, will Kmail and akonadi be in 
synch after the changes ?  I think so, it is only file removal.

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