Pkg xen devel - Jun 2011 - Bug#630984: xen-utils-common: shutdown hangs with xenwatch and reboot being blocked

Package: xen-utils-common
Version: 4.0.0-1
Severity: normal
Tags: squeeze

The host runs (at the time of testing) a single linux-x86 domu (128MB, 
1VCPU).
When issuing a reboot, everything looks as expected:
- domu is saved
- xend is stopped
- drbd stopped
- lvms unmounted
- md0..4 stopped
and the message "rebooting now" appears, but nothing happens until
"INFO: task xenwatch is blocked for 120 seconds" and
"INFO: task reboot is blocked for 120 seconds" appear. A hard reset is
necessary to resume.

Poking around I found that waiting for things to settle after the domu 
has been saved helps. For this, I modified /etc/init.d/xendomains, 
sleeping for 2 seconds a the end of the stop() function. One second of 
sleep sometimes wasn't enough.

*** xendomains-org    Sun Jun 19 15:26:49 2011
--- xendomains    Sun Jun 19 15:27:13 2011
***************
*** 342,347 ****
--- 342,350 ----
       kill $WDOG_PID >/dev/null 2>&1
       fi

+     # prevent race condition
+     sleep 2
+
       # Unconditionally delete lock file
       rm -f $LOCKFILE
   }



-- System Information:
Debian Release: 6.0.1
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-xen-amd64 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages xen-utils-common depends on:
ii  gawk                    1:3.1.7.dfsg-5   GNU awk, a pattern scanning 
and pr
ii  lsb-base                3.2-23.2squeeze1 Linux Standard Base 3.2 
init scrip
ii  udev                    164-3            /dev/ and hotplug 
management daemo
ii  xenstore-utils          4.0.1-2          Xenstore utilities for Xen

xen-utils-common recommends no packages.

xen-utils-common suggests no packages.

-- Configuration Files:
/etc/init.d/xendomains changed [not included]

Your message dated Fri, 29 Aug 2014 13:42:18 +0000
with message-id <20140829134218.GC4246 at shell.waldi.eu.org>
and subject line moreinfo and new information
has caused the Debian Bug report #630984,
regarding xen-utils-common: shutdown hangs with xenwatch and reboot being
blocked
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner at bugs.debian.org
immediately.)


-- 
630984: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=630984
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems
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