Date: Thu, 21 Aug 1997 12:07:06 +0000 (GMT) From: Felipe Rivera Marquez <felipe@informador.com.mx> To: freebsd-isp@FreeBSD.ORG Subject: Re: Multiple Swap Partitions Message-ID: <Pine.BSF.3.96.970821115519.14150A-100000@sunasci.informador.com.mx> In-Reply-To: <Pine.BSF.3.95q.970821104355.10754B-100000@wopr.inetu.net>
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Taken from man pages of swapon
------------------------------------
DESCRIPTION
Swapon is used to specify additional devices on which paging and
swapping
are to take place. The system begins by swapping and paging on only
a
single device so that only one disk is required at bootstrap time.
Calls
to swapon normally occur in the system multi-user initialization file
/etc/rc making all swap devices available, so that the paging and
swap-
ping activity is interleaved across several devices.
------------------------------------------------------------
So, in theory, you can have several swap partitions defined in
/etc/fstab.
The thing i've tried is using vn devices to allow swaping on a
file, and maybe this is more useful for you.
0. Recompile your kernel if it has no support for vn
pseudo-devices. Add this line to your kernel configuration
pseudo-device vn 4
1. Create a file as big as you want the aditional swap space to
be. (I put it on /var/tmp)
2. Create vn devices
/dev/MAKEDEV vn0
3. Use vnconfig to configure the special file and activate swap on
it.
vnconfig -e /dev/vn0 /var/tmp/swapfile swap)
Have fun!
On Thu, 21 Aug 1997, Dev Chanchani wrote:
> Can you add more than one swap partition to a FreeBSD server? We have a
> production server that is running out of swap space, and we cannot gain
> physical access to the machine easily. Can we add another swap partition,
> and/or add it on the fly?
>
> Regards,
> Dev
>
>
Felipe Rivera M.
felipe@informador.com.mx
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