Help with transaction log and index file corruption.

[Philipp Faeustlin]

Am 27.08.2014 um 16:31 schrieb CLMDRIVE:
> I am using dovecot 2.2.13 on a VPS.
> One (only one!) of the users is experiencing IMAP disconnections. The
> maillog file is full of errors about corrupted transaction log and index
> files.
>
> The configurations follows:
>
> # 2.2.13: /etc/dovecot/dovecot.conf
> # OS: Linux 2.6.18-028stab107.1 x86_64 CentOS release 6.4 (Final)
> auth_cache_size = 1 k
> auth_mechanisms = plain login
> auth_username_chars =
> "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$-=?^_{}~./@+%"
> disable_plaintext_auth = no
> namespace {
>    inbox = yes
>    location =
>    prefix = INBOX.
>    type = private
> }
> passdb {
>    args = /usr/local/cpanel/bin/dovecot-wrap
>    driver = checkpassword
> }
> plugin {
>    acl = vfile
>    quota = maildir
>    quota_rule = INBOX.Trash:ignore
> }
> protocols = imap
> service auth {
>    unix_listener auth-client {
>      mode = 0666
>    }
> }
> service imap-login {
>    client_limit = 500
>    inet_listener imap {
>      address = *
>    }
>    inet_listener imaps {
>      address = *
>    }
>    process_limit = 50
>    process_min_avail = 5
>    service_count = 0
>    vsz_limit = 64 M
> }
> service imap {
>    process_limit = 512
>    vsz_limit = 256 M
> }
> service managesieve-login {
>    client_limit = 500
>    process_limit = 50
>    process_min_avail = 5
>    service_count = 0
>    vsz_limit = 64 M
> }
> service managesieve {
>    process_limit = 512
>    vsz_limit = 256 M
> }
> service pop3-login {
>    client_limit = 500
>    inet_listener pop3 {
>      address = *
>    }
>    inet_listener pop3s {
>      address = *
>    }
>    process_limit = 50
>    process_min_avail = 5
>    service_count = 0
>    vsz_limit = 64 M
> }
> service pop3 {
>    process_limit = 512
>    vsz_limit = 256 M
> }
> ssl_cert = </etc/dovecot/ssl/dovecot.crt
> ssl_cipher_list = ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP
> ssl_key = </etc/dovecot/ssl/dovecot.key
> userdb {
>    driver = prefetch
> }
> userdb {
>    args = /usr/local/cpanel/bin/dovecot-wrap
>    driver = checkpassword
> }
> protocol imap {
>    imap_capability = +NAMESPACE
>    imap_idle_notify_interval = 24 mins
>    imap_logout_format = in=%i, out=%o, bytes=%i/%o
>    mail_max_userip_connections = 30
>    mail_plugins = acl quota imap_quota
> }
> protocol pop3 {
>    mail_max_userip_connections = 3
>    mail_plugins = quota
>    pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s,
> bytes=%i/%o
>    pop3_uidl_format = UID%u-%v
> }
> protocol lda {
>    postmaster_address = postmaster at example.com
> }
>
> Can anyone help me on this??? I am about to cry!
Don't know, but I can try to give you some information on what I would 
check.

1. http://wiki2.dovecot.org/Debugging/Rawlog
to debug the imap connection, there are probably some more information 
about the problem of this user.

2. Most of dovecots index files can easily be deleted and dovecot will 
create new ones of his own.
So I would check which files are causing the problems and if it is save 
to delete them. If it is then delete them and see what happens.

Philipp
>
> thank you!
>
> Claudio
>