"Synchronization corrupted index header" with mdbox: thousands of deleted e-mails reappeared in INBOX
Hi everyone,
Suddenly, the following messages appeared in my Dovecot error log:
master: Warning: Killed with signal 15 (by pid=0 uid=0 code=kill)
Error: Mailbox Trash: Synchronization corrupted index header [...]/Trash/dbox-Mails/dovecot.index: uidvalidity=0, but next_uid=73 Warning: Mailbox Trash: fscking index file [...]/Trash/dbox-Mails/dovecot.index Warning: mdbox([...]/mail/storage): rebuilding indexes: Mailbox Trash index was fsck'd Warning: mdbox([...]/mail/storage): fscking index file [...]/index/inbox/storage/dovecot.map.index Error: Mailbox INBOX: [...]/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent
The first message is because I restarted the container.
Since then, Thunderbird shows thousands of previously deleted e-mails again in INBOX where all my messages are marked as unread.
- Do you know what can cause it and how can I avoid to happen again?
- Is the used mdbox storage engine that fragile? Is the fault tolerance of other engines better?
I have a backup from some days ago. Is it possible to somehow revert back to it and sync the new e-mails on top of those?
Version: 2.4.2.
Thank you,
Ákos
The problem was that an FTS crash corrupted the mdbox index, which resulted in thousands of e-mails to be placed back into INBOX again.
This happened in two separate accounts in the course of a few months.
It seems that dbox format is quick but very fragile, so I upgraded it to Maildir. Even if its index is corrupted, only speed is lost but the information is retained. This I value a lot more in a PIM application than speed.
Ákos
- 14:01 keltezéssel, Ákos Szőts via dovecot írta:
Hi everyone,
Suddenly, the following messages appeared in my Dovecot error log:
master: Warning: Killed with signal 15 (by pid=0 uid=0 code=kill)
Error: Mailbox Trash: Synchronization corrupted index header [...]/Trash/dbox-Mails/dovecot.index: uidvalidity=0, but next_uid=73 Warning: Mailbox Trash: fscking index file [...]/Trash/dbox-Mails/dovecot.index Warning: mdbox([...]/mail/storage): rebuilding indexes: Mailbox Trash index was fsck'd Warning: mdbox([...]/mail/storage): fscking index file [...]/index/inbox/storage/dovecot.map.index Error: Mailbox INBOX: [...]/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent
The first message is because I restarted the container.
Since then, Thunderbird shows thousands of previously deleted e-mails again in INBOX where all my messages are marked as unread.
- Do you know what can cause it and how can I avoid to happen again?
- Is the used mdbox storage engine that fragile? Is the fault tolerance of other engines better?
I have a backup from some days ago. Is it possible to somehow revert back to it and sync the new e-mails on top of those?
Version: 2.4.2.
Thank you,
Ákos
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Ákos Szőts