[clamav-users] Slow reload

Bowie Bailey Bowie_Bailey at BUC.com
Wed Mar 20 15:53:05 EDT 2019

On 3/20/2019 2:57 PM, Alessandro Vesely via clamav-users wrote:
> On Wed 20/Mar/2019 14:53:28 +0100 Bowie Bailey wrote:
>> On 3/20/2019 8:42 AM, Alessandro Vesely via clamav-users wrote:
>>> On Tue 19/Mar/2019 15:35:39 +0100 Bowie Bailey wrote:
>>>> ClamAV is taking about 2 1/2 minutes to reload its database on my mail server.  This
>>>> seems to frequently happen when we are sending an email, so the Thunderbird will time
>>>> out on the send (although the message will frequently go through anyway).
>>> The mail server should scan the message with the database at hand.  A forked child can do the filtering while the parent reloads.  Upon loading, the child exits and new messages will be scanned by the parent with the updated database.
>> That would be ideal, but it doesn't seem to be happening that way.  If I look at my
>> logs, I see "SelfCheck", then "Reading databases", and at that point all scanning
>> stops until the "Database correctly reloaded" message 2 1/2 minutes later.
> Are you using clamd directly (rather than libclamav)?  How is it connected to
> the mail server?
>> Is there a setting somewhere to allow scanning to continue with the existing child
>> processes while the reload happens?
> It has to be coded inside the mail filter; avfilter for Courier works that way,
> for one.

I am running Courier.  I am currently calling clamd via pythonfilter.  I'll have to
take a look at avfilter.


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