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Subject: [Bug 195458] Hang on shutdown/root unmount after FreeBSD 10.1R upgrade
Date: Tue, 03 Mar 2015 17:02:37 +0000
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X-Bugzilla-Version: 10.1-RELEASE
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195458

--- Comment #29 from jamie.maher@gmail.com ---
I just tried the following suggestion in a new stock 10.1R VM with UFS fs -
same hang on "All buffers synced." when trying to reboot after update:

1. 'sysctl hw.usb.no_shutdown_wait=1' 
   and 'echo "hw.usb.no_shutdown_wait=1" >> /etc/sysctl.conf'
2.  freebsd-update fetch
3.  freebsd-update install
4.  reboot -> hang after "All buffers synced."

The CPU usage jumps up from being fairly low to a steady 65 - 75% on a dual CPU
VM after it hits the All buffers synced.

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