Hi Robert. Am 06.09.18 um 08:50 schrieb Robert Schetterer: > Am 05.09.2018 um 07:37 schrieb Aki Tuomi: >> >>> On 04 September 2018 at 23:20 Robert Schetterer <r...@sys4.de> wrote: >>> >>> >>> Am 04.09.2018 um 18:27 schrieb Sami Ketola: >>>> >>>> >>>>> On 4 Sep 2018, at 18.38, Robert Schetterer <r...@sys4.de> wrote: >>>>> >>>>> Sorry i migrated terrabytes of mail with imapsync and never had a >>>>> problem, it works as designed, also with maildir rsync did a good job, >>>>> what never worked as it should was dsync ,cause of bugs ,that may >>>>> changed now >>>>> >>>> >>>> I would like to very much hear about the problems you had with dsync as we >>>> have successfully migrated tens of petabytes of mails with it successfully >>>> while preserving the UID numbers. >>>> Imapsync would have been totally out of question as it is absolutely >>>> crucial >>>> in those migrations to keep the UID -> MAIL pairs matching legacy server. >>>> And usually also POP3 UIDLs. If not keeping the data the servers would have >>>> literally melted under load when switching over then of thousands of users >>>> forcing them to redownload headers of even mail bodies for millions of >>>> mails. >>>> >>>> Sami >>>> >>>> >>> >>> I think you should know the dove buglist, i used dovecot since the beginning >>> and believe me dsync had a lot of problems, as i stated i hope this had >>> changed now. I didnt used/tested it again the last years cause i had no >>> big migration job to do, we ever tried to use it that days cause youre >>> right we would have prefer not broke pop3 stuff at migration. But it >>> never worked, so imapsync was the best way to go, also having courier, >>> cyrus migrations with format/namespace change etc. >>> >>> Imapsync works as designed and migration might not be ideal at some >>> points but it has no real stoppers if migration is well prepared and >>> organized. >>> >>> >>> Best Regards >>> MfG Robert Schetterer >> >> There has been progress with dsync in the past years, and it can do courier >> and cyrus migrations with format/namespace changes. "Few years ago" is a long >> time. > > we will give a retry end of this year and report
What's your opinion now for `doveadm backup/sync ...`? >> >> Aki >>> >>> -- >>> [*] sys4 AG >>> >>> http://sys4.de, +49 (89) 30 90 46 64 >>> Schleißheimer Straße 26/MG, 80333 München >>> >>> Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 >>> Vorstand: Patrick Ben Koetter, Marc Schiffbauer >>> Aufsichtsratsvorsitzender: Florian Kirstein > >
