Understanding filesystem quotas

[Steffen Kaiser]

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On Thu, 13 Nov 2014, Chris Szilagyi wrote:

> I've enabled the quota plugins and to my knowledge that part is good.
> I've edited the file 90-quota.conf and uncommented these lines and set them
> as follows:
>
> plugin {
> quota_rule = *:storage=1G
> }
>
> plugin {
> quota = fs:User quota:user
> }
>
> To my knowledge, this should enable filesystem quotas by user.  However when
> I run "doveadm quota get -u username", it shows:
>
> Quota name Type    Value Limit                             %
> User quota STORAGE     0     -                             0
>
> So basically all zeros.  I've also tried running "doveadm -Dv quota get -u
> username" and don't see anything that stands out or that would indicate an
> issue.  It shows the correct block device and such.  I know filesystem
> quotas are working as I can run "quota username" and it shows the usage.

Are you sure, that you:

1) have enabled quotas on /home/username/mail,
2) have reloaded Dovecot after config change,
3) have read dovecot logs, if there are errors, and
4) maybe you need to configure a limit, in order to enable quotas in 
Dovecot at all.
5) maybe try the mount=<path> option, http://wiki2.dovecot.org/Quota/FS

> then? I would prefer to let Dovecot enforce quotas rather than rely on the
> filesystem quota mechanism, but keep disk I/O down.

Dunno if "rely" sounds like you don't trust it ;-) But you should place 
INDEXes somewhere else, if you enforce quota via file system.

- -- 
Steffen Kaiser
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