[ ssic-linux-Bugs-2719679 ] migration stuck in move_data_wait_for_state_change()

Bugs item #2719679, was opened at 2009-03-28 17:28
Message generated for change (Comment added) made by rogertsang
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Category: Process Management
Group: None
Status: Open
>Resolution: Accepted
Priority: 5
Private: No
Submitted By: Roger Tsang (rogertsang)
>Assigned to: Roger Tsang (rogertsang)
Summary: migration stuck in move_data_wait_for_state_change()

Initial Comment:
>From John Hughes:

With current (March 17th) CVS I'm seeing a problem migrating processes from time to time.

Running my zz-migrate-cruelty script (attached) it sometimes seems to get stuck in move_data_wait_for_state_change

Stack trace shows:
schedule
move_data_wait_for_state_change
ssi_quiesce_movement
do_signal
do_notify_resume
work_notifysig

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>Comment By: Roger Tsang (rogertsang)
Date: 2009-05-10 21:48

Message:
Looks like an issue with SMP synchronization (or lack of)...

With my latest changes (not yet in CVS) the zz-migrate-cruelty script no
longer gets stuck.  I tested successfully for 10+ minutes on two-node
cluster.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=405834&aid=2719679&group_id=32541

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