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Re: [Xen-API] xenbusb_nop_confighook_cb timeout

I assume this should be a Citrix bug….

Seems like the bug : 

Xen 4.1.1 has a bug where the emulated CDROM/DVD drive in an HVM guest fails to work properly. This bug has been fixed in Xen 4.1.2 and later versions. The symptoms of this bug are lost interrupts and frozen ata commands in the kernel dmesg log. See this email thread for more information: http://old-list-archives.xen.org/archives/html/xen-devel/2011-10/msg02147.html 

documented in : 

does not get corrected…

El 14/10/2012, a las 17:16, Egoitz Aurrekoetxea Aurre <egoitz@xxxxxxxxxxxxx> escribió:


I get finally a decent workaround. Xen 4.1.3 serves the cdrom in a way that seems not to like to FreeBSD. The workaround is basically remove the cd drive between offered devices to the vm…. Just to follow this on xcp/xenserver….


And it boots…. without modifying any source…. 

First time I debugged probably did something wrong and didn't see the printfs set by me to print any variable %s content… later yes…. was "intr config"….. and the boot proccess was stopped here… it stops always in the cd initialization part…. it's not able to make the cd to come online….

Just removing it… you can boot properly…. 

This is not the solution…. it's just a workaround….

I'll try to find a solution…. but seems here the Xen people… has changed something….

Continue investigating……


El 12/10/2012, a las 02:27, Egoitz Aurrekoetxea Aurre <egoitz@xxxxxxxxxxxxx> escribió:

Hi Mark,

I assume are better (and fur more safer) ways... Seems some Xen pv specific device has some issue being "attached"... I'm debuging it to see which device is the one is causing the problem.... Then I could (depending on the device) avoid attaching it or try to see how to handle it properly...


Egoirz Aurrekoetxea Aurre

El 11/10/2012, a las 21:53, Mark Felder <feld@xxxxxxx> escribió:

On Wed, 10 Oct 2012 16:18:57 -0500, Gót András <got.andras@xxxxxxxxxxx> wrote:

The patched worked for me also. I hope somehow it'll make to into 9.1rc if send a reply to the previous PR.

Can we get a confirmation from any devs about whether or not this patch is the "right way" to fix it? If so, I'd also appreciate seeing this slip into 9.1 so the latest stable FreeBSD release works reliably with the latest stable XenServer/XCP release...
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