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Date:      Sat, 4 Jan 2003 06:16:11 -0800
From:      David Schultz <dschultz@uclink.Berkeley.EDU>
To:        Andy Farkas <andyf@speednet.com.au>
Cc:        freebsd-bugs@FreeBSD.ORG
Subject:   Re: bin/46633: Flase error report in swapon when adding too many disks
Message-ID:  <20030104141611.GA378@HAL9000.homeunix.com>
In-Reply-To: <20030104105859.U47310-100000@hewey.af.speednet.com.au>
References:  <20030103225334.GC12586@HAL9000.homeunix.com> <20030104105859.U47310-100000@hewey.af.speednet.com.au>

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Thus spake Andy Farkas <andyf@speednet.com.au>:
> 
> > +.Sh DIAGNOSTICS
> > +These utilities may fail for the reasons described in
> > +.Xr swapon 2 .
> 
> Much better.  (but shouldn't it say "This utility..."?)

No.  For better or for worse, I piggybacked swapoff(8) on the
swapon(8) manpage, and someone stuck swapctl(8) on top of that.

> It is still true that there is no mention in *any* man page about the
> number of swap devices in 4.7-release/stable though - one must read LINT.
> 
> man 2 swapon says:
> 
>   [EINVAL]  The device configured by special was not configured
>             into the system as a swap device.

In -CURRENT, the following was added along with the swapoff(2) code:

+Additionally,
+.Fn swapon
+can fail for the following reasons:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The system has reached the boot-time limit on the number of
+swap devices,

The doc update will probably show up in -STABLE if/when Matt
backports swapoff(2).  The work should be straightforward, but
it's best not to complicate it by making minor tweaks now that
will show up as merge conflicts later.

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