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    SubjectRe: 2.6.9-mm1: LVM stopped working
    On Tue, Oct 26, 2004 at 08:36:51AM -0400, wrote:
    > LVM doesn't work with 2.6.9-mm1 here either, complaining that it
    > can't find all the pv's. I'm not using any sort of encryption. Here,
    > pvdisplay reports:

    > I can open the device nodes for the 'missing' pv's in a hexeditor and see the
    > uuid magic; if I reboot into 2.6.9-rc4-mm1 they are found without a
    > problem, and everything works.

    Firstly enable lvm debugging. lvm.conf: log { file="/tmp/lvm2.log" level=7 }
    Compare the lvm log files for the kernels to see where it's going wrong.
    Then take complete straces (incl. read/write data) of the lvm process
    with each kernel and again compare them. [Or put files on web and send URLs.]

    [To check for repeat of old problems with related symptoms:]
    Were both kernels compiled with the same compiler version? Which version?
    Does it make any difference if you rebuild lvm with --disable-o_direct?

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