Date: Thu, 09 Jun 2011 20:26:29 -0700 From: Colin Percival <cperciva@freebsd.org> To: "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org> Subject: breakage in blkfront with ring_pages > 1 Message-ID: <4DF18EE5.5090704@freebsd.org>
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Hi all, I'm seeing breakage with ring_pages > 1 on a blkfront; more precisely, request #32 has a garbage response (resulting in a panic) exactly as if the dom0 thinks we're only using a single page for the ring. Forcing ring_pages to 1 makes the problem go away. Has anyone seen anything like this? Is it possible that there's a bug in how our blkfront negotiates the request ring? Does anyone have ring_pages > 1 in use? -- Colin Percival Security Officer, FreeBSD | freebsd.org | The power to serve Founder / author, Tarsnap | tarsnap.com | Online backups for the truly paranoid
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