Comment # 14 on bug 841060 from Liuhua Wang

(In reply to Markus Ko�mann from comment #11)
> <http://www.redhat.com/archives/lvm-devel/2012-August/msg00069.html> seems
> to be the patch, which introduced the silent switch. 
> But if I understand it right silent=1 does the same thing as using the -qq
> option on command line. 
> 
> The man page of lvm.conf says:
>  Set to 1 to suppress all non-essential tool output.
>               When set, display and reporting tools will still write the
>               requested device properties to standard output, but messages
>               confirming that something was or wasn't changed will be
>               reduced to the 'verbose' level and not appear unless -v is
>               supplied.
> If lvscan is considered to be a "display and reporting tool" , then it's a
> bug in lvscan. 

I think lvscan is an operation command which scan (all disks) for Logical
Volumes. So it is reasonable not to output when silent=1.

If you think it is needed, I can also fix the manual.