On Mon, Aug 22, 2011 at 12:53:58PM -0400, Brian Troutwine wrote:
> On Mon, Aug 22, 2011 at 12:46 PM, Stefan Schulte <
> stefan.schu...@taunusstein.net> wrote:
>
> > Let's say you have just one swap device and the following configuration
> >
> > mount { 'swap':
> > fstype => 'swap',
> > device => /dev/swap1,
> > }
> >
> > and in fstab you have
> >
> > /dev/swap2 swap swap defaults 0 0
> >
>
> On Linux systems that should be 'none' in the second field there, as well as
> most BSD systems though it's been a while. man 5 fstab and forward search
> for 'none'.
>
> What should puppet do now? Correct: device is out of sync so change the
> > device. Now let's say you have the same fstab but add another resource
> >
> > mount { 'swap2':
> > name => 'swap',
> > fstype => 'swap',
> > device => '/dev/swap2',
> > }
> >
> > What should happen now? The first mount resource still matches with the
> > line in fstab so it will change the device. On the other hand the line
> > in fstab also matches the second resource so device will be changed
> > again.
> >
> > One "solution" is to identify a mount by mountpoint AND device but that
> > has drawbacks too
> >
>
> Please elaborate.
>
Whenever you have the wrong device for a mount in your fstab you end up
with mounts in mounts. For me this would happens a lot for nfs mounts where
some machines are configured with hostname:/share and others with
hostname.domain.tld:/share
If puppet identifies a mount with name AND device I will end up with two
lines in fstab for the same share. Pretty ugly.
> > BUT, I guess the mountpoint really doesnt care for swap. At least I have
> > the following line in fstab:
> >
> > /dev/mapper/swap none swap sw 0 0
> >
> >
> The mount point does matter, which is the problem. If the 'mount' type were
> keyed on an alias this would be a non-problem but instead it's by mount
> point which is, by definition, not unique.
>
No I meant mount/swapon/swapoff probably doesnt care. So you may be able to do
mount { 'swap1':
device => 'swap',
fstype => 'swap',
}
mount { 'swap2':
device => 'swap',
fstype => 'swap',
}
But as you already pointed out, according to the man page mountpoint should
always
be 'none' so that is not an option.
-Stefan
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