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[Xen-devel] Question about xm save
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] Question about xm save |
| From: | Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx> |
| Date: | Mon, 12 Mar 2007 08:53:40 +0100 |
| Delivery-date: | Mon, 12 Mar 2007 00:52:49 -0700 |
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Hi,
I'm trying to understand what's going on while calling 'xm save ...'.
I looked through the sources and found in xend stuff:
XendCheckpoint.py -> saveInputHandler() -> dominfo.shutdown('suspend')
This makes an entry in the xenstore:
control = ""
shutdown = "suspend"
The function dominfo.waitForShutdown() is startet and waits for an event.
In parallel (with the forkHelper) the command
'/usr/lib/xen/bin/xc_save 21 1 0 0 0' is started and never returns.
What I miss is the connection between these both things.
Can anybody give me a hint?
(For the tests I simply added some tracer in the python scripts and startet
the mini-os.)
Many thanks in advance!
Dietmar.
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