Re: breakage in blkfront with ring_pages 1

2011-07-05 Thread Colin Percival
On 06/10/11 13:30, Justin T. Gibbs wrote: On 6/9/11 9:26 PM, Colin Percival wrote: 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? The only backend driver I know of that can

Re: breakage in blkfront with ring_pages 1

2011-07-05 Thread Justin T. Gibbs
On 7/5/11 7:14 PM, Colin Percival wrote: On 06/10/11 13:30, Justin T. Gibbs wrote: On 6/9/11 9:26 PM, Colin Percival wrote: 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? The

Re: breakage in blkfront with ring_pages 1

2011-07-05 Thread Colin Percival
[oops, let's try sending this again with reply-all instead of reply...] On 07/05/11 19:04, Justin T. Gibbs wrote: On 7/5/11 7:14 PM, Colin Percival wrote: On 06/10/11 13:30, Justin T. Gibbs wrote: On 6/9/11 9:26 PM, Colin Percival wrote: Has anyone seen anything like this? Is it possible

Re: breakage in blkfront with ring_pages 1

2011-07-05 Thread Colin Percival
On 07/05/11 19:42, Colin Percival wrote: On 07/05/11 19:04, Justin T. Gibbs wrote: On 7/5/11 7:14 PM, Colin Percival wrote: Maybe the right option is to have a loader tunable dev.xn.linuxback to control which version of the protocol is used? What a mess. Yep. Mess or not, shall I go