From: "M. Warner Losh" <imp@bsdimp.com>
To: hch@lst.de
Cc: nolan@sigbus.net, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] block/raw-posix.c:hdev_create() on FreeBSD and in general
Date: Wed, 20 May 2009 08:41:24 -0600 (MDT) [thread overview]
Message-ID: <20090520.084124.1715680382.imp@bsdimp.com> (raw)
In-Reply-To: <20090520080723.GA2957@lst.de>
In message: <20090520080723.GA2957@lst.de>
Christoph Hellwig <hch@lst.de> writes:
: Didn't FreeBSD do away with block device nodes in the 4.x release cycle?
Yes. Block devices are a quaint relic of the past, and aren't
needed. :)
: In that case we will never allow to create host devices on FreeBSD
: with this code.
Yes, on FreeBSD, just use the char dev.
: Also I think we should allow creating the host devices on all supported
: operating systems. For Linux we should use block devices, for FreeBSD
: always char devices. For the other BSDs and Solaris do we allow only
: block or also the raw char devices? Not sure if they actually support
: O_DIRECT for block devices nodes which pretty much is a Linux-ism so
: for cache=none at least we should probably open the raw nodes..
Other BSDs still have block devices. O_DIRECT is supported in at
least NetBSD (and FreeBSD).
Warner
next prev parent reply other threads:[~2009-05-20 14:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-20 8:07 [Qemu-devel] block/raw-posix.c:hdev_create() on FreeBSD and in general Christoph Hellwig
2009-05-20 14:41 ` M. Warner Losh [this message]
2009-05-20 15:03 ` Christoph Hellwig
2009-05-20 16:24 ` M. Warner Losh
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