dovecot - Sep 2014 - Corrupted index cache after migrating from maildir to mdbox

Hi guys,

I'm running dovecot/postfix on my Debian Jessie maschine:

# dovecot --version
2.2.13
doveconf -n output: http://p.bastelfreak.de/HsVwS/

today I migrated from maildir(located at /var/vmail) to mdbox with these
commands:
rsync -av -f"+ */" -f"- *" /var/vmail/ /home/vmail/
rm /home/vmail/*/*/Maildir -rf
for i in $(doveadm user \*); do u=$(echo $i | cut -d@ -f1); d=$(echo $i
|cut -d@ -f2); dsync -v -u $i mirror mdbox:/home/vmail/$d/$u/mdbox; done

Then I changed the mail_location to mdbox:/home/vmail/%d/%n/mdbox and
did the following commands:

service dovecot restart
for i in $(doveadm user \*); do u=$(echo $i | cut -d@ -f1); d=$(echo $i
|cut -d@ -f2); dsync -v -u $i mirror maildir:/var/vmail/$d/$u/Mail; done
doveadm index -A all INBOX
for i in $(doveadm user \*); do doveadm -Dv fts rescan -u $i;done

unfortunately I'm getting the following two kinds of error messages for
all mail boxes in my mail.log:

Error: Corrupted index cache file
/home/vmail/%domain/%user/mdbox/mailboxes/%maildir/dbox-Mails/dovecot.index.cache:
Broken virtual size for mail UID 2564

and:

Error: read(/home/vmail/%domain/%user/mdbox/storage/m.108
): FETCH BODY[] for mailbox %maildir UID 2564 got too little data: 2417
vs 6319

please let me know if you have any suggestions for fixing this issue or
if you need more information.

kind regards, Tim

Hi guys,

does nobody has any thoughts on this error?


On 28.09.2014 02:48, Tim wrote:
> Hi guys,
>
> I'm running dovecot/postfix on my Debian Jessie maschine:
>
> # dovecot --version
> 2.2.13
> doveconf -n output: http://p.bastelfreak.de/HsVwS/
>
> today I migrated from maildir(located at /var/vmail) to mdbox with these
> commands:
> rsync -av -f"+ */" -f"- *" /var/vmail/ /home/vmail/
> rm /home/vmail/*/*/Maildir -rf
> for i in $(doveadm user \*); do u=$(echo $i | cut -d@ -f1); d=$(echo $i
> |cut -d@ -f2); dsync -v -u $i mirror mdbox:/home/vmail/$d/$u/mdbox; done
>
> Then I changed the mail_location to mdbox:/home/vmail/%d/%n/mdbox and
> did the following commands:
>
> service dovecot restart
> for i in $(doveadm user \*); do u=$(echo $i | cut -d@ -f1); d=$(echo $i
> |cut -d@ -f2); dsync -v -u $i mirror maildir:/var/vmail/$d/$u/Mail; done
> doveadm index -A all INBOX
> for i in $(doveadm user \*); do doveadm -Dv fts rescan -u $i;done
>
> unfortunately I'm getting the following two kinds of error messages for
> all mail boxes in my mail.log:
>
> Error: Corrupted index cache file
>
/home/vmail/%domain/%user/mdbox/mailboxes/%maildir/dbox-Mails/dovecot.index.cache:
> Broken virtual size for mail UID 2564
>
> and:
>
> Error: read(/home/vmail/%domain/%user/mdbox/storage/m.108
> ): FETCH BODY[] for mailbox %maildir UID 2564 got too little data: 2417
> vs 6319
>
> please let me know if you have any suggestions for fixing this issue or
> if you need more information.
>
> kind regards, Tim

On 27 Sep 2014, at 17:48, Tim <tim at bastelfreak.de> wrote:
> unfortunately I'm getting the following two kinds of error messages for
> all mail boxes in my mail.log:
> 
> Error: Corrupted index cache file
>
/home/vmail/%domain/%user/mdbox/mailboxes/%maildir/dbox-Mails/dovecot.index.cache:
> Broken virtual size for mail UID 2564
> 
> and:
> 
> Error: read(/home/vmail/%domain/%user/mdbox/storage/m.108
> ): FETCH BODY[] for mailbox %maildir UID 2564 got too little data: 2417
> vs 6319
If that happens to all the mails, something went wrong. Did you maybe use zlib
plugin while writing the messages (compressed), but now you're trying to
read the mails without zlib plugin?

The error messages may be somewhat confusing. The problem isn't
dovecot.index.cache file, but that the message sizes in the m.* files don't
match the contents. There's no easy way to fix those, because they should
just about never be wrong.