huge mdbox broken / Log synchronization error

[Aki Tuomi]

> On 06/05/2021 14:09 Florian Lohoff <f at zz.de> wrote:
> 
>  
> On Thu, May 06, 2021 at 09:56:48AM +0300, Aki Tuomi wrote:
> > > 
> > > I upgraded to 2.3.4 from stretch-backports now and rerunning force-fsck now.
> > > 
> > This seems to indicate that there is some larger corruption in your mdbox files. I'm afraid it might mean that you need to rm the dovecot.map.index* files and force-resync then.
> > 
> 
> I reran force-resync and it ended with after showing every folder to rebuild mdbox:
> [ ... 220K of them ... ]
> doveadm(inbox at wasteland.rfc822.org): Debug: Mailbox o1tbffmh2legdry91sgdjykoa9: Mailbox opened because: mdbox rebuild
> doveadm(inbox at wasteland.rfc822.org): Debug: Mailbox miy6ugauaz: Mailbox opened because: mdbox rebuild
> doveadm(inbox at wasteland.rfc822.org): Debug: Mailbox rk3wmrgcgi4rugiwf7y3uec4ate: Mailbox opened because: mdbox rebuild
> doveadm(inbox at wasteland.rfc822.org): Debug: Mailbox ixazuy553fhrt5zgow0: Mailbox opened because: mdbox rebuild
> doveadm(inbox at wasteland.rfc822.org): Warning: Transaction log file /var/vmail/wasteland.rfc822.org/inbox/mdbox/storage/dovecot.map.index.log was locked for 15023 seconds (rotating while syncing)
> doveadm(inbox at wasteland.rfc822.org): Error: Corrupted transaction log file /var/vmail/wasteland.rfc822.org/inbox/mdbox/dovecot.list.index.log seq 4: indexid changed: 1620283336 -> 1620289271 (sync_offset=0)
> doveadm(inbox at wasteland.rfc822.org): Warning: fscking index file /var/vmail/wasteland.rfc822.org/inbox/mdbox/storage/dovecot.map.index
> 
> I have no clue if this is a:
> 
> "I have repaired everything - be happy"
> 
> or
> 
> "Unfixable broken - Better use your backup"
> 
> 
> So i guess i remove all dovecot.map.index* files now and restart over.
> 
> Flo
> -- 
> Florian Lohoff                                                     f at zz.de
>   Any sufficiently advanced technology is indistinguishable from magic.

I would suggest trying to fix it by adding nologin attribute to the account to avoid concurrent access before doing those things.

Aki