[kdepim-users] Crash and lost kmailrc

[Ingo Klöcker]

On Monday 10 August 2009, Anne Wilson wrote:
> On Monday 10 August 2009 16:21:21 Günther J. Niederwimmer wrote:
> > Hy,
> >
> > Am Montag, 10. August 2009 13:34:06 schrieb Anne Wilson:
> > > On Monday 10 August 2009 11:27:36 Günther J. Niederwimmer wrote:
> > > > Have any also my problem ;)
> > > >
> > > > I have installed KDE 4.2.4 in the last time I have a KDE (XOrg)
> > > > crash on my system, no possible input from mouse or keyboard.
> > > >
> > > > after a new start (reset) I lost my kmailrc and all in
> > > > ../KDE4/share/apps/kmail/imap
> > > >
> > > > I have a openSUSE 11.1 running ..
> > > >
> > > > Is this problem known?
> > >
> > > Ignore my last post.  My brain has just gone into gear.  Since
> > > this is imap, the messages should all still be on your server. 
> > > What is in that directory is the link to your server account, so
> > > probably what really is causing the problem is the loss of
> > > kmailrc.  If you have a backup of that I think you'll be OK.
> >
> > ;)
> >
> > Now I have a backup from kmailrc ;), but it is not the best
> > sometime to reset the computer :(.
>
> You wouldn't need to reset if you can shut down kmail and copy
> kmailrc in. You'd just need to restart kmail, I think.
>
> > In ./KDE4/share/apps/kmail/imap are the hold time info and the
> > pointer to the last read mails and more.
>
> OK - I know there are a few files related to the directory that gets
> created there.  I could be wrong, but I think that when you get
> kmailrc back in, restarting will set up all that directory again for
> you.
>
> > On a crash i have open "normal" two programs kmail and konqueror
> > but only the kmail config are lost ?
>
> I think data usually only gets lost if an operation was in progress
> at the very moment of the crash.

This is correct. Unfortunately, modern file systems may delay writing 
changes to the disk for several minutes unless they are told to write 
the changes immediately. So potentially "the very moment of the crash" 
can be a pretty long moment.

There were a few heated discussions on the Linux kernel mailing list 
about whether the loss of files due to crashes of the system is the 
fault of the file system or of the applications which fail to force the 
changes to be written to disk. In the end some adjustments were made in 
the file system code.

If your system crashes a lot, then doing regular backups is your best 
option to protect yourself against lost files.


Regards,
Ingo
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