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Date:      Sun, 15 Jun 2008 13:40:42 +0200
From:      Kris Kennaway <kris@FreeBSD.org>
To:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Cc:        RW <fbsd06@mlists.homeunix.com>, questions@freebsd.org
Subject:   Re: md devices mounted with async
Message-ID:  <4854FFBA.8020506@FreeBSD.org>
In-Reply-To: <20080615083039.M19706@wojtek.tensor.gdynia.pl>
References:  <20080614224742.17316919@gumby.homeunix.com.> <20080615083039.M19706@wojtek.tensor.gdynia.pl>

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Wojciech Puchar wrote:
>>
>> mdmfs(8) has an example of a malloc-backed md device mounted with the
>> async option. Is there any point in doing this with malloc and vnode
>> devices? In neither case does a write to the file-system require a write
>> to a physical disk.
> i don't think so.
> 
> but if you use FreeBSD 7 use tmpfs. it says it's experimental feature, 
> but still not crashed on 3 computers i use it.

There are known bugs, don't use it if you value your stability :)

> what it's missing is some kind of quota, you may crash the system by 
> simply filling it up and using all swap

That's one of them.

Kris



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