[Dovecot] Server 1.0.1 migration: Maildir : UID inserted in the middle of mailbox [resolved]

[DINH Viêt Hoà]

On 6/27/07, damien chambe - EGS <damien.chambe at groupe-laurent.com> wrote:
> Timo Sirainen a écrit :
> > On Fri, 2007-06-22 at 00:28 +0200, damien chambe - EGS wrote:
> >
> >
> >> Our Dovecot server had to be changed due to a hardware problem
> >> I was forced to use SUSE SLES 10 for the new one, instead of SLES 9 on
> >> the old server.
> >>
> >
> > The kernel matters a lot with NFS. Some kernels are more broken than
> > others. Attribute cache also matters. http://wiki.dovecot.org/NFS
> >
> >
> >> I store mails on NFS, and index on local disk. There's only one
> >> dovecot
> >> server, so no multiple access.
> >>
> >
> > So deliver is also run on the same server? If all of it is done on the
> > same server, then pretty much the only thing you can change is the
> > kernel or somehow try to work around its bugs. I can think of only this
> > fix on Dovecot's side:
> >
> > http://dovecot.org/list/dovecot/2006-December/018145.html
> >
> > Hmm. Actually I just realized another reason that could cause these: Are
> > the clocks on the NFS server and on your Dovecot machine synchronized?
> > They must be less than 1 second apart at all times or you'll begin to
> > see problems.
> >
> >
> I've tried to update kernel (SUSE SLES 10 is 2.6.16) but no change.
> But synchronizing NFS server and dovecot server with NTP did the trick.
>
> SUSE SLES9 NFS was more tolerant than SLES 10 with time sync...
>
> No more uid messages yesterday !

did you use the following on the NFS server :
option "no_subtree_check" in /etc/exports
I know that it solved some bugs when accessing files through mmap() on
a NFS filesystem.

-- 
DINH Viêt Hoà