Retrieving mail from read-only mdbox

[Mark Moseley]

On Wed, May 31, 2017 at 3:24 PM, M. Balridge <dovecot at r.paypc.com> wrote:

> Quoting Mark Moseley <moseleymark at gmail.com>:
>
> > I've tried using IMAP with mail_location pointed at the snapshot, but,
> > though I can get a listing of emails in the mailbox, the fetch fails when
> > dovecot can't write-lock dovecot.index.log.
>
> I'm surprised that dovecot would even try to write-lock a write-protected
> file/directory, though I can appreciate the situation where a file may be
> in a
> directory that is writable by some UID other than the one dovecot is
> running as.
>
> Is there an unsafe control over lock_method similar to Samba's fake oplocks
> setting in Dovecot?
>
> If anyone wants some good "horror" writing, a perusal of Jeremy Allison's
> write-up on the schizophrenic approaches to file-locking is worthy of your
> time.
>
> https://www.samba.org/samba/news/articles/low_point/tale_two_stds_os2.html
>
>
>
There's no fake locks from what I can tell. If I'm reading the source
right, the only valid options are fcntl, flock, and dotlock.
Tried 'em all :)