Re: Reiser4 status: benchmarked vs. V3 (and ext3)

From: Hans Reiser (reiser_at_namesys.com)
Date: 07/27/03

  • Next message: Ingo Molnar: "[patch] sched-2.6.0-test1-G6, interactivity changes" 
    Date:	Sun, 27 Jul 2003 17:35:19 +0400
To: Jussi Laako <jussi.laako@pp.inet.fi>

    Jussi Laako wrote:

    >On Sat, 2003-07-26 at 10:19, Yury Umanets wrote:
    >
    >
    >
    >>>So basically we do have pretty powerful hardware with huge storage and
    >>>memory and now need a FS which is fast and reliable even on flash
    >>>memory. JFFS2 is nice but way too slow once one has bigger sizes.
    >>>
    >>>
    >>I think this is more then enough for running reiser4. Reiser4 is a linux
    >>filesystem first of all, and linux is able to be ran on even worse
    >>hardware then you have.
    >>
    >>
    >
    >Most Linux filesystems can't be used properly with flash devices because
    >of unability to handle write errors caused by flash wearing out. FS
    >should mark the block as bad and relocate the data. Some devices report
    >"read correctly, but had ECC" and when such happens data should also be
    >relocated to not worn-out place and block marked as bad.
    >
    >
    >
    >
    I would be happy to accept a patch fixing that, or to fix it for a fee,
    or to fix it if we somehow get more funding from somewhere next year.;-) 

    -- 
Hans
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