add launchpad bug reports without comments

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+RFE: add an event to report block devices watermark
+
+Add an event to report if a block device usage exceeds a threshold. The threshold should be configurable with a monitor command. The event should report the affected block device. Additional useful information could be the offset of the highest sector , like in the query-blockstats output.
+
+Rationale for the RFE
+Managing applications, like oVirt (http://www.ovirt.org), make extensive use of thin-provisioned disk images.
+In order to let the guest run flawlessly and be not unnecessarily paused, oVirt sets a watermark and automatically resized the image once the watermark is reached or exceeded.
+
+In order to detect the mark crossing, the managing application has no choice than aggressively polling the QEMU monitor
+using the query-blockstats command. This lead to unnecessary system load, and is made even worse under scale: scenarios
+with hunderds of VM are becoming not unusual.
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