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Date:      Fri, 04 May 2012 11:08:56 -0500
From:      Bryan Drewery <bryan@shatow.net>
To:        Freddie Cash <fjwcash@gmail.com>
Cc:        FreeBSD Stable <freebsd-stable@freebsd.org>
Subject:   Re: Make filesystem type configurable for periodic(8)?
Message-ID:  <4FA3FF18.4000309@shatow.net>
In-Reply-To: <CAOjFWZ4VxyMLSzzWsUMj21HccZkzwPUtM5PWAS-oaaocCLN8Dw@mail.gmail.com>
References:  <CAOjFWZ4VxyMLSzzWsUMj21HccZkzwPUtM5PWAS-oaaocCLN8Dw@mail.gmail.com>

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On 05/04/2012 11:05 AM, Freddie Cash wrote:
> A few of the periodic(8) scripts in FreeBSD have constructs similar to
> the following to get which filesystems to scan for various things:
>     MP=`mount -t ufs,zfs | awk '$0 !~ /no(suid|exec)/ { print $3 }'`
> 
> For systems with large ZFS pools, and many ZFS filesystems, these
> periodic scripts can grind it to its knees, and then some.  For
> backups servers where we don't really care about the
> ownership/permissions of files from the FreeBSD perspective, we really
> don't want the ZFS filesytems to be scanned; only the UFS ones for the
> FreeBSD OS install.  To that end, I have to manually edit these files
> to remove the ",zfs":
>     MP=`mount -t ufs | awk '$0 !~ /no(suid|exec)/ { print $3 }'`
>                           ^^^^^^^^
> Would it be worthwhile to anyone else to make the filesystem type(s)
> to scan via the periodic(8) scripts a variable that's set by default
> in /etc/defaults/periodic.conf and that user's can override via
> /etc/periodic.conf?
> 
> Or, am I the only one that's suffering here?  :)
> 
> If there's interesting in this, I can look into coming up with some
> patches.  But wanted to check if anyone else would find it useful.
> 

I would find this useful. But further, I have a ZFS root pool as well as
a ZFS backup pool. I don't want to exclude all of ZFS, just certain
pools, or even certain datasets.

Regards,
Bryan Drewery



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