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    SubjectRe: udiskd high CPU usage with 4.0 git
    On Sun, 08 Mar 2015 18:14:39 +0100 Prakash Punnoor <prakash@punnoor.de> wrote:

    > Hi,
    >
    > I noticed the udisks daemon (version 2.1.4) suddenly started using high
    > cpu (one core at 100%) with linux 4.0 git kernel. I bisected it to:
    >
    > 750f199ee8b578062341e6ddfe36c59ac8ff2dcb
    >
    > And reverting it from current master (at
    > 2cf3afcd4cbe0e32b8722fc291e9255de1b4d6c6) fixes my problem indeed.
    >
    > I attached dmesg and config from
    > 2cf3afcd4cbe0e32b8722fc291e9255de1b4d6c6 with
    > 750f199ee8b578062341e6ddfe36c59ac8ff2dcb reverted. Any more infos
    > needed? I am actually using a raid5 array, if that matters:
    >
    > Personalities : [raid6] [raid5] [raid4]
    > md127 : active raid5 sdd1[1] sdb1[3] sdc1[0]
    > 3907023872 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3]
    > [UUU]
    >
    > unused devices: <none>
    >
    >
    > The array uses systemd automount feature (x-systemd.automount).
    >
    > Please CC me, as I am not subscribed.
    >
    >
    > Regards,
    >
    > Prakash

    Thanks for the report.
    I can't reproduce this, or see what would cause it.

    Can you please reproduce the problem and then run

    strace -o /tmp/udisks.trace -f -p `pidof udisksd`

    for a few seconds, then interrupt and post the resulting '/tmp/udisks.trace'.

    Thanks,
    NeilBrown
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