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Re: Snapshots in tmpfs

I think you mean "halves the write rate".

--- On Thu, 2/23/12, Thor Lancelot Simon <> wrote:

From: Thor Lancelot Simon <>
Subject: Re: Snapshots in tmpfs
To: "David Holland" <>
Date: Thursday, February 23, 2012, 5:04 PM

On Fri, Feb 24, 2012 at 12:45:32AM +0000, David Holland wrote:
> On Thu, Feb 23, 2012 at 11:20:18PM +0000, David Holland wrote:
>  > > > Is CHFS really suitable for CompactFlash?  Is LFS even usable?
>  > >
>  > > No
>  >
>  > I thought the whole point of chfs was to be able to operate on raw
>  > flash devices that don't have their own flash translation layer.
> Oh, my mistake, since there was concern about filesystem type I
> thought you were talking about raw flash, but apparently CompactFlash
> is not raw flash, same as USB sticks aren't.
> In that case, just use wapbl.

That doubles the write rate for the common "create new version of
file and rename into place" pattern...

Translation layer or not, doubling the write rate to any type of
flash is not a great idea.

Thor Lancelot Simon                         
  "All of my opinions are consistent, but I cannot present them all
   at once."    -Jean-Jacques Rousseau, On The Social Contract

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