Re: Very low disk performance on 5.x

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 05/02/05

  • Next message: Steven Hartland: "Re: Very low disk performance on 5.x" 
    To: Sten Spans <sten@blinkenlights.nl>
Date: Mon, 02 May 2005 23:06:49 +0200

    In message <Pine.SOC.4.61.0505022252190.787@tea.blinkenlights.nl>, Sten Spans w
    rites:

    >>> What about disk arrays that support RAID3?
    >>
    >> Would work for me, but most of them are dumbed down when they do RAID3:
    >> they have to hard format the disks to 128 byte sector sizes and similar
    >> madness in order to support 512 bytes sectors on the RAID3 volume.
    >
    >I would really love the 512 + 8 byte checksum stuff that mainframes
    >and netapps do. Does GEOM simplify implementing something like this ?

    Yes, GEOM works with arbitrary sectorsizes, but far from all current
    GEOM classes does. 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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  • Next message: Steven Hartland: "Re: Very low disk performance on 5.x"

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