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Date: Tue, 06 Jan 2015 14:24:56 +0100
From: Nikos Vassiliadis <nvass@gmx.com>
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To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>
Subject: vtbd0: hard error cmd=flush fsbn 0
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Hi,

I am seeing this message on 8 and 9 branches running on bhyve 
(10.1-PRERELEASE #0 r274515). Does this just mean that bio_flush is not 
supported? or is it something to check further?

> vtbd0: hard error cmd=flush fsbn 0
> GEOM_JOURNAL: BIO_FLUSH not supported by vtbd0s1a.

Thanks, Nikos