Date: Mon, 9 Mar 2009 14:07:57 -0700 (PDT) From: Doug Barton <dougb@FreeBSD.org> To: Gary Jennejohn <gary.jennejohn@freenet.de> Cc: freebsd-emulation@FreeBSD.org Subject: Re: qemu 0.10.0 - cd/dvd drive access problems Message-ID: <alpine.BSF.2.00.0903091404100.40723@ync.qbhto.arg> In-Reply-To: <20090309103706.0a44fb26@ernst.jennejohn.org> References: <49B46A29.7020500@FreeBSD.org> <20090309103706.0a44fb26@ernst.jennejohn.org>
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On Mon, 9 Mar 2009, Gary Jennejohn wrote: > On Sun, 08 Mar 2009 18:00:25 -0700 > Doug Barton <dougb@FreeBSD.org> wrote: > >> One of my main reasons for wanting to install qemu was to be able to >> use Windows tools for things like archiving DVDs. Now that I have qemu >> working pretty well for most things, I tried to start using it for >> DVD/CD access and it's not working well at all. I installed XP via a >> typical installation CD, so I thought I had it made in this area. :( >> >> I'm using '-cdrom /dev/acd0' the same way I did for the install. If >> there is a disc in the drive when I start qemu I can "see" the disc, >> and copy some small files from it. However trying to copy/read large >> files (say, 1G) doesn't work at all. I get an error saying that sector >> of the disc cannot be read (this is with known-good discs). I tried >> with and without the cd-rom DMA compile-time OPTION, no luck. If I >> remove the disc from the drive, or if there is no disc in the drive >> when I start qemu, inserting one after it starts produces no results. >> Every time I try to access the drive I get the "Please insert a disc >> into drive D:" error message. >> >> I'm using a fairly up to date 8-current as the host, btw. >> >> >> Any suggestions? >> > > Do you have vfs_aio in your kernel or as a module? I'm running the aio module, which seems to incorporate the vfs_aio stuff, yes. > I've run openSUSE in qemu and used the DVD drive with no problems at > all; I have vfs_aio in my kernel. Are you talking about 'options VFS_AIO'? > One thing I've noticed is that the DVD drive is locked and I can't open > the drawer once qemu starts, even if there is no disc in the drive. > Apparently openSUSE acceses the drive (i.e. locks it) even when it's > empty. I forgot to mention this bit. If I click the eject menu option on the CD/DVD in windows it doesn't actually eject it like native windows does, but it does allow me to remove the disc manually. After that even if I do reinsert a disc the windows guest doesn't "see" it. Thanks for the response, Doug -- This .signature sanitized for your protection
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