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    SubjectRe: New filesystem for Linux
    Mikulas Patocka wrote:
    > There was discussion about it here some times ago, and I think the
    > result was that the IDE bus is reset prior to capacitors discharge and
    > total loss of power and disk has enough time to finish a sector --- but
    > if you have crap power supply (doesn't signal power loss), crap
    > motherboard (doesn't reset bus) or crap disk (doesn't respond to reset),
    > it can fail.
    > BTW. reiserfs and xfs depend on this feature too. ext3 is the only one
    > that doesn't.
    > Mikulas

    Yes, if your disk can not atomically commit a single sector, then it is
    broken. And ALL filesystems rely on this behavior because they all
    expect NOT to have hardware IO read failures of important metadata after
    a power failure ( due to the sector ECC failing ).

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      Last update: 2006-11-06 03:47    [W:0.022 / U:8.372 seconds]
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