dovecot - Oct 2009 - quota error dovecot 1.1.13

Hi all,

I've troubles with dovecot and quota. Sometimes mails to users are bounced
because quota is full. I'm reading quota_rules from LDAP. One "du -h
." from maildir show user is under quota ( at 70 % more or less), less than
99%, i delete maildirsize and dovecot recreate it with ldap-quota value at first
line and second line is current-quota mails. Current-quota is near quota max
value so dovecot execute quota_warning (99%).
Why is dovecot thinking quota is at 99% when du -h show me its value is near 70%
? any guess?

My conf:

syslog_facility: local1
protocols: imap pop3 managesieve
listen(default): *
listen(imap): *
listen(pop3): *:110
listen(managesieve): *:2000
ssl_disable: yes
disable_plaintext_auth: no
login_dir: /usr/local/dovecot//var/run/dovecot/login
login_executable(default): /usr/local/dovecot/libexec/dovecot/imap-login
login_executable(imap): /usr/local/dovecot/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/dovecot/libexec/dovecot/pop3-login
login_executable(managesieve):
/usr/local/dovecot/libexec/dovecot/managesieve-login
login_process_per_connection: no
login_process_size: 1200
login_processes_count: 20
login_max_processes_count: 2048
login_max_connections: 512
max_mail_processes: 4096
mail_max_userip_connections(default): 1000
mail_max_userip_connections(imap): 1000
mail_max_userip_connections(pop3): 10
mail_max_userip_connections(managesieve): 10
mail_location: maildir:%h/Maildir
mmap_disable: yes
dotlock_use_excl: no
mail_nfs_storage: yes
mail_nfs_index: yes
mail_executable(default): /usr/local/dovecot/libexec/dovecot/imap
mail_executable(imap): /usr/local/dovecot/libexec/dovecot/imap
mail_executable(pop3): /usr/local/dovecot/libexec/dovecot/pop3
mail_executable(managesieve): /usr/local/dovecot/libexec/dovecot/managesieve
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3): quota
mail_plugins(managesieve):
mail_plugin_dir(default): /usr/local/dovecot/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/dovecot/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/dovecot/lib/dovecot/pop3
mail_plugin_dir(managesieve): /usr/local/dovecot//lib/dovecot/managesieve
imap_client_workarounds(default): outlook-idle
imap_client_workarounds(imap): outlook-idle
imap_client_workarounds(pop3):
imap_client_workarounds(managesieve):
sieve(default):
sieve(imap):
sieve(pop3):
sieve(managesieve): ~/.dovecot.sieve
auth default:
? cache_size: 512000
? cache_ttl: 1800
? executable: /usr/local/dovecot/libexec/dovecot/dovecot-auth
? failure_delay: 5
? debug: yes
? worker_max_count: 4096
? worker_max_request_count: 4096
? process_size: 4096
? passdb:
??? driver: ldap
??? args: /etc/dovecot/dovecot-ldap.conf
? userdb:
??? driver: ldap
??? args: /etc/dovecot/dovecot-ldap.conf
? socket:
??? type: listen
??? master:
????? path: /var/run/dovecot/auth-master
????? mode: 511
plugin:
? sieve: %h/.dovecot.sieve
? quota_warning: storage=99%% /usr/local/bin/quota-full.sh %u
? quota_warning2: storage=95%% /usr/local/bin/quota-warning.sh 95 %u
? quota_warning3: storage=70%% /usr/local/bin/quota-warning.sh 70 %u
? quota: maildir



thanks in advance, 

Regards.

Brightblade skrev:
> Hi all,
> 
> I've troubles with dovecot and quota. Sometimes mails to users are
bounced because quota is full. I'm reading quota_rules from LDAP. One
"du -h ." from maildir show user is under quota ( at 70 % more or
less), less than 99%, i delete maildirsize and dovecot recreate it with
ldap-quota value at first line and second line is current-quota mails.
Current-quota is near quota max value so dovecot execute quota_warning (99%).
> Why is dovecot thinking quota is at 99% when du -h show me its value is
near 70% ? any guess?
You should read the file named "maildirsize" in the specific
user's homedir.
I'll tell you whether this is caused by a wrong interpretation of your 
ldap values or whether dovecot didn't count the usage right.


The first line in the maildirsize file tells what values it got from the 
  database and the subsequent lines are counting the actual usage. 
Comparing the values on the first line to your ldap database is the 
first thing you should do.


Getting what dovecot considers the actual usage from the maildirsize 
file requires that you know how it works. One in a while dovecot saves 
the current usage to the second line of the maildirsize file. Then 
afterwards every time the there is a change (mail arrives or is deleted) 
one line showing that change is appended to the file.
When a certain limit is reached all the lines are summed together and 
the second line of the file is updates (while all subsequent lines are 
deleted).

This means that just reading the second line of the file will give you a 
pretty good indication of whether dovecot has counted the usage correctly.

If dovecot has made an error just delete the maildirsize which will 
cause dovecot to recount the usage.


Regards, Mikkel

On Wed, 2009-10-14 at 11:43 +0000, Brightblade wrote:
> Why is dovecot thinking quota is at 99% when du -h show me its value is
near 70% ? any guess?
Messages copied with hard links. Try "du -l" instead.
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