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    SubjectRe: x86: 4kstacks default
    Adrian Bunk wrote:
    >
    > The code in the kernel that gets the fewest coverage at all are our
    > error paths, and some vendor might try 4k stacks, validate it works in
    > all use cases - and then it will blow up in some error condition he
    > didn't test.
    ..

    That's exactly the worry.

    If anyone want's to take a crack at testing some of the more likely
    fail paths there, just introduce a media error onto a SATA disk
    that's buried at the bottom of a stacked RAID1 over RAID0 over LVM,
    with XFS and nfsd on top.

    Or something like that.
    And then experiment with corrupting meta data rather than simply file data.
    How-to introduce a media error? hdparm --make-bad-sector nnnnnn /dev/sdX

    This catches the most likely (IMHO) failure scenarios,
    but still comes nowhere near 100% code coverage. :(

    Cheers


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