Date: Tue, 23 Jul 2019 17:54:12 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= <roger.pau@citrix.com> To: R0me0 *** <knight.neo@gmail.com> Cc: <freebsd-xen@freebsd.org> Subject: Re: Xen 4.12 - systemrescuecd-6.0.3.iso - Baremetal reboots Message-ID: <20190723155412.g3km6ecoxy74vwl4@Air-de-Roger.citrite.net> In-Reply-To: <CAN1fqMpLdLjbbH=GrDK8Uy8jU-OExTN=4rkLwRLLO3YDSxFYzg@mail.gmail.com> References: <CAN1fqMpe54C1e4bdi1jMB5oVbbMpFbxqtM%2BbdBhNnsCmex81Lw@mail.gmail.com> <20190704072629.v4qegclh7ljfdt64@Air-de-Roger> <CAN1fqMoxP%2BuJrSz3DqAR1S%2BLyTAAM6ejSwAP3pPnsFnXPdye9w@mail.gmail.com> <CAN1fqMo7u2Q9pBd8b1a8m6sKM91EpDPwcBaQsjveXrGZdPpWtw@mail.gmail.com> <20190723131339.hbdwdqtlhcox7qjm@Air-de-Roger.citrite.net> <CAN1fqMpLdLjbbH=GrDK8Uy8jU-OExTN=4rkLwRLLO3YDSxFYzg@mail.gmail.com>
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On Tue, Jul 23, 2019 at 03:45:49PM +0000, R0me0 *** wrote: > Yes the DOM0, the XEN hypervisor completely hangs and the host > automatically reboots. You will have to setup a serial console in order to debug then. You need to find the serial port of your box and hook a null modem [0] to it, and then plug the other side into another computer and use cu, minicom or some other program in order to get the serial output. There's a section on the handbook about how to use the serial console: https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-setup.html You will need to add something like: console=com1,vga com1=115200,8n1 to your xen_cmdline if you don't have it yet in order to get the output. > It seems related with Linux guests using kernel 4.x Does then same happen if you use a disk line like: 'format=raw, vdev=hda, access=rw, backendtype=qdisk, target=/dev/zvol/fbroot/SAND/disk' Note the 'backendtype' option is set to qdisk. Roger. [0] https://en.wikipedia.org/wiki/Null_modem
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