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    SubjectRe: call_usermodehelper() returns -513 when ocfs2 umounting filesystems
    On 2013/7/30 15:30, Xue jiufei wrote:
    > Hi,
    > We have encountered an error when umounting ocfs2 filesystems.
    > Function ocfs2_leave_group() calls call_usermodehelper() to stop
    > heartbeat thread, but it returns -513(ERESTARTNOINTR) in one test.
    > And after that error, every times umounting the filesystem, it
    > returns the same error.
    > And at the same time, there's another kworker thread which is
    > sending messages to other nodes always return return errno
    > -512(ERESTARTSYS). So I think these two threads may have
    > pending signals remain.
    > This error can not reproduced any longer. Has any ideas?
    >
    > The log is as follows:
    > [58463.684504] (kworker/u:1,17332,0):o2net_send_tcp_msg:1332 ERROR: sendmsg returned -512 instead of 104
    > [58915.213299] ocfs2: Error -513 running user helper "/usr/sbin/ocfs2_hb_ctl -K -u A5FD0ED8733D4F9C98D23B326AD7DE10"
    > [59406.443615] ocfs2: Error -513 running user helper "/usr/sbin/ocfs2_hb_ctl -K -u A5FD0ED8733D4F9C98D23B326AD7DE10"
    >
    > Thanks.
    > --joyce
    The kernel version is 3.0.58.
    >
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