Date: Fri, 30 Aug 2002 10:40:43 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Lutz Kittler <Lutz.Kittler@sse-erfurt.de> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Swap-Space Message-ID: <20020830011043.GG49032@wantadilla.lemis.com> In-Reply-To: <15726.4051.211067.109514@master.sse-erfurt.de> References: <15726.4051.211067.109514@master.sse-erfurt.de>
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On Thursday, 29 August 2002 at 14:13:07 +0200, Lutz Kittler wrote:
>
> Hi,
>
> when I look at my swapspace I see :
>
> Device 1K-blocks Used Avail Capacity Type
> /dev/da0s1b 524160 116 524044 0% Interleaved
> /dev/da0s1b 524160 64 524096 0% Interleaved
> /dev/rda0s2b 524160 0 524160 0% Interleaved
> Total 1572480 180 1572300 0%
This looks dangerous.
> In fstab there is :
>
> /dev/da0s1b none swap sw 0 0
> /dev/da0s2b none swap sw 0 0
>
> Why do I see /dev/da0s1b twice and why all 2 are used ?
Good question. Check your other /etc/rc* files and see if you're
inadvertently adding something twice. The /dev/rda0s2b loos
particularly surprising.
Looking at the summary, it's possible that you could end up with
extreme data corruption here if the VM system thinks that the last two
partitions are distinct and overwrites data on them. You should
resolve this problem as soon as possible. Try this:
1. Boot to single user.
2. Mount /usr.
3. Do 'pstat -s'. You should see no swap.
4. Do 'swapon -a', then 'pstat -s'. You should see only two swap
partitions.
5. Continue booting to multi-user. You should still see only two
swap partitions.
If this doesn't work, please report where it goes wrong.
Greg
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