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[libvirt] libvirt does not logout of iscsi targets, causing system hang on shutdown



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Hi guys,

There's a quite old bug entry here:

https://bugzilla.redhat.com/show_bug.cgi?id=700010

I just stumbled over that very issue on F18. Doing a little bit
debugging of the shutdown sequence, it turns out that - at least on my
F18 installation - libvirtd is shutdown *after* iscsid, which makes it
impossible for libvirt to perform the logout of the iscsi session properly.

My local fix (diff) is attached. It simply adds another startup
dependancy on iscsid.service which in turn delays iscsid shutdown until
after libvirtd has stopped. Having that applied, the system shuts down
properly again.

I was asked to post that here for discussion...
So please consider this trivial change for the next update.

Cheers
 -Fritz
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--- /usr/lib/systemd/system/libvirtd.service	2013-01-28 21:35:32.000000000 +0100
+++ /etc/systemd/system/libvirtd.service	2013-02-28 06:34:41.341905146 +0100
@@ -7,6 +7,7 @@
 Description=Virtualization daemon
 Before=libvirt-guests.service
 After=network.target
+After=iscsid.service
 
 [Service]
 EnvironmentFile=-/etc/sysconfig/libvirtd

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