Back to KDEPIM 1 and KDE SC 4.8.4 due to repeated mail data loss
Hi!
I am back to KDEPIM 1 aka 4.4.11 and KDE SC 4.8.4 from Sid.
Reason? Data losses.
[Akonadi] [Bug 318227] New: Data loss on restarting Akonadi to get it
responsive again
https://bugs.kde.org/318227
[Akonadi] [Bug 318290] New: Empty mails: AkonadiAgentServer(4890)/libakonadi
Akonadi::ResourceBase::itemRetrieved: Item does not provide part
"HEAD"/"RFC822"
https://bugs.kde.org/318290
And finally the thing were I had enough of it:
[Akonadi] [Bug 318444] New: data loss in maildir resource: Mails that were
accessible disappeared and are not visible in maildir directory anymore
https://bugs.kde.org/318444
KMail 2 / Akonadi lost mails from debian-kde mail folder while I was
*reading* it. I never saw something like this with any mail application I
ever used.
I had this running on BTRFS, and due to a BTRFS problem with scrubbing I
cannot fully prove that my BTRFS /home filesystem is correct. But I do think
that it is no issue with BTRFS since the rsync based backup worked nicely.
But the scrubbing does not complete right now and gives a kernel backtrace.
Sorry, but I think my first head up were premature.
Here is how I went back:
1) I had some discussion with Debian´s package management that I do not
really remember in full. It basically went down to:
dpkg --force-depends --purge $( dpkg -l | grep 4.10.2 | awk '{print $2;}' )
before trying to install old KDE SC and KDEPIM again.
2) Restore maildir from backup:
merkaba:/mnt/home-zeit> rsync -a -AHXS -P --del martin-Mail-2013-04-11/
/home/martin/Mail/
3) Restore exact matching kmailrc from backup:
martin@merkaba:~/Backup/KDEPIM-1/Konfigurationsdateien> cp -p kmailrc
~/.kde/share/config/kmailrc
I didn´t do this initially, since I thought KMail 2 uses a new config file
kmail2rc and the old one would remain unaltered. Well was altered and KMail
1 tried to check all of its index files and it took ages.
4) Then I had KMail download about 60 MB and 6000 mails from last 5 days
from my Dovecot POP3 server. This worked cause I configured KMail2 / Akonadi
to keep mails on server for 7 days.
Only thing that doesn´t work right now is my CRM114 spam filter integration.
Whyever.
I did not try what happens with IMAP accounts, but at least with POP3 I am
quite sure that I had data losses. So be careful.
I would have kept testing KDEPIM 2 despite the other about 10 bugs I
reported which were are about performance issues - on an ThinkPad T520 with
Intel Sandybridge i5 with 2,5GHz and 8 GB of RAM and 300 GB Intel SSD 320! -
and some other oddities, but these repeated mail data loss were unacceptable
for me.
Ciao,
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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