[Tickets #8892] Quota

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Ticket URL: http://bugs.horde.org/ticket/8892
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  Ticket             | 8892
  Created By         | mtecles at biof.ufrj.br
  Summary            | Quota
  Queue              | IMP
  Version            | 4.3.6
  Type               | Enhancement
  State              | New
  Priority           | 1. Low
  Milestone          |
  Patch              | 1
  Owners             |
+New Attachment     | quotaIMP.zip
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mtecles at biof.ufrj.br (2010-02-28 19:14) wrote:

Based on the my experience, users tend to keep messages on the INBOX.  
The bigger the quota, the bigger the INBOX file, with performance hit.  
In the other hand, messages are documents that must be filed.

I use two different devices (file systems) with quota enabled. This  
allows different
quotas for INBOX and IMAP folders, resulting better organization,  
administration
and performance if INBOX quota is lower than IMAP folders quota.

This describes enhancements to IMP quota that can be configured to use  
one or two different devices (file systems). If using two devices, one  
is for INBOX
and the other is for IMAP folders.

Tested on Debian 5.02.

Modifications

File                        Function(s)                   Patch file

imp/lib/Quota/command.php   IMP_Quota_command, getQuota   quotacommand.txt

imp/lib/Quota.php           getQuota, getMessages         qQuota.txt

imp/lib/IMP.php             quota, quotaData              quotaIMP.txt

Configuration file examples                                
servers1.txt, servers2.txt


Descriptions

command.php, function IMP_Quota_command accepts 2 new parameters:

      'dev_inbx'   => User´s INBOX file system device  - REQUIRED
                      If you have INBOX and IMAP folders in the same
                      device, use ONLY this parameter.
                      If you have INBOX and IMAP folders in different
                      devices and quota enabled on them you MUST use
                      'dev_fldrs' parameter also.
                      Usually device to: /,  /var/mail,  /var/spool/mail
                      Examples: '/dev/hda6', '/dev/sdb2', '/dev/md2',
                                '/dev/mapper/VOL1-VarM'
      'dev_fldrs'  => User´s home file system device  - OPTIONAL
                      Use only if you have INBOX and IMAP folders in
                      different devices and quota enabled on them.
                      For IMAP folders. Usually device to: /home
                      Examples: '/dev/hda7', '/dev/sda3', '/dev/md1',
                                '/dev/mapper/VOL2-Home'

       Obsolete parameters: grep_path, partition


command.php, function getQuota:

1-  @return mixed  An associative array.
            'soflimithome' = Maximum quota allowed in dev_fldrs
            'usagehome' = Currently used portion in dev_fldrs
            'soflimitvar' = Maximum quota allowed in dev_inbx
            'usagevar' = Currently used portion in dev_inbx
             Returns PEAR_Error on failure.

2- Now it executes 'quota -wu user' instead of 'quota -u user'. Volume device
names are long and would break quota output lines. Output may have 1  
to 4 lines.

3- Function now takes care of exceeded quotas, quota not defined for that user
and if it is using one or two file systems (dev_inbx, dev_fldrs). If using
only dev_inbx then 'usagehome' => -1, 'soflimithome' => -1.



Quota.php, function getQuota now returns:

      * @return mixed  An associative array.
      *                'limit...' = Maximum quota allowed
      *                'usage...' = Currently used portion of quota (in bytes)
      *                'limithome' and 'usagehome' for dev_fldrs (mail folders)
      *                'limitvar' and 'usagevar' for dev_inbx (INBOX)

Quota.php, function getMessages:

     New messages (dev_inbx and dev_fldrs, long and short):
         Alerts quota exceeded, grace time or expired;
         Alerts almost full;
         Normal quota information.



IMP.php, function quota takes care of using one or two file systems
(dev_inbx, dev_fldrs) to show quotas.

IMP.php, fucntion quotaData takes care of using one or two file systems
(dev_inbx, dev_fldrs). New information scale:

         quota >= 100%, quotaalert. Alerts quota exceeded, grace time  
or expired;
         90% <= quota < 100%, quotaalert. Alerts almost full;
         75% <= quota < 90%, quotawarn;
         quota < 75%, control.

Thank you,
Mauricio Tecles