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    SubjectRe: problem with a cobalt RaQ550 system and DMA (Serverworks OSB4 in impossible state)
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    On Mer, 2003-04-23 at 22:27, Olivier Bornet wrote:
    > I'm trying to install Debian on 4 RaQ550 with each 2 80GB disks. All
    > seems OK with 3 of RaQ, but with one, it crash when I put the two disks
    > in a RAID1 meta device. In fact, it as crash at about 6% before the 70GB
    > partition is fully synchronized.


    Bad block I think. Its a bug fixed in 2.4.21pre. It trips a sanity
    check for an OSB4 bug inadvertantly. 2.4.21pre handles CSB5 with full
    UDMA and OSB4 in MWDMA2 without tripping wrongly.

    If your chipset is CSB5 you can also just comment out the check and
    rebuild


    Alan

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