similar to: How to send sysrq on "virsh console"

I am using CentOS 5.6 as a KVM host. My guests are running CentOS 5.6 with the only console being a virtual serial console. The guests are configured so magic-sysreq can be used to debug kernel issues. However, in order to send magic-sysrq from a serial port, I need to send a break. How does one send a break on the virtual console serial port provided by KVM/libvirt to guests? Thanks,

Hi, is there some way to trigger sysrq from the serial console in xenlinux? With native linux it works by sending a break + sysrq letter, in xenlinux it doesn''t work that way though ... cheers, Gerd -- panic("it works"); /* avoid being flooded with debug messages */ _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

Hello, Without using XM, is it safe to write the letter corresponding to the desired sysrq to xenstore in /local/domain/domid/control/sysrq ? Does anything else have to happen? I am working on some backup utilities that utilize the lvm2 library (liblvm2cmd) , libxenctrl and libxenstore. The program will issue a sysrq S to a guest, pause it, take a snapshot then unpause it (all very quickly). An

I am having trouble sending sysrq commands over USB serial, and I'm not sure what else to check. I have two identical machines, each with usb-to-serial adapters, joined by a null modem adapter. One runs an agetty, the other minicom. I can log in over the agetty as a user and it works as expected, until I try to send a sysrq. To send a break in minicom, I type [Ctrl]+[a] then [f]. Then I

Hi, I am seeing a problem with a earlier working domain configuration. Here is the domain xml file. I am not getting the virsh console now. I am trying this on RHEL 6.0. Here is the list of steps that I am using: [root at krm1 test]# virsh define vmtest.xml Domain vmtest3 defined from vmtest.xml [root at krm1 test]# virsh start vmtest3 Domain vmtest3 started [root at krm1 test]# virsh

Is it possible to both log the serial console and to actually use it? A few of the VMs I've got are configured as follows: <serial type='file'> <source path='/var/log/libvirt/qemu/serial/bb-2.6.18-128.el5-x86_64.log'/> <target port='0'/> </serial> <console type='file'> <source

Hi, I tried to test a wrong operation on purpose again. When I tried xm sysrq command to a inactive managed domain, I saw the following error message. The error message did not have a message text behind "Error:". And I found an AssertionError message in xend.log. # xm list PVdomain.1 Name ID Mem VCPUs State Time(s) PVdomain.1

Hi Fi, cmdline: console=hvc0 systemd.wants=getty at hvc0 Connect via virt-manager - View / Text Consoles / Text Console no.: Fedora 24 (Rawhide) Kernel 4.3.0-0.rc3.git2.4.fc24.x86_64 on an x86_64 (hvc0) localhost login: root Last login: Fri Oct 2 17:28:36 on hvc0 # tty /dev/hvc0 # systemctl status getty at hvc0.service ? getty at hvc0.service - Getty on hvc0 Loaded: loaded

This patch unifys error messag of migrate and sysrq. Signed-off-by: Yoshinori Katase <y_katase@soft.fujitsu.com> Best Regards, Yoshinori Katase diff -r bfcdf4099d23 tools/python/xen/xm/migrate.py --- a/tools/python/xen/xm/migrate.py Thu Jan 12 13:27:55 2006 +++ b/tools/python/xen/xm/migrate.py Fri Jan 13 15:26:14 2006 @@ -56,8 +56,8 @@ if opts.vals.help: opts.usage()

I wrote a piece of code recently that monitors the consoles of the VMs and while no one is attached to the console, it throws away the buffer as any text appears. If someone *is* attached, it leaves it alone. It wouldn't be hard to modify the code to save the console text to a file instead of throwing it away. If you are interested, I can post the code. Peter On 02/02/2016 07:36 AM,

Hi, I am trying to set my VMs for redirecting their consoles to a file but its important to keep the virsh console access to solve any problem I can find while they are running. I tried several settings through libvirt (serial and console tags) but I can not get the key. Any suggestion? Any help? Many thanks in advance. Carlos G.

Hi again! More TPM + XEN stuff. have look at the following: ================= "xl list -l centos7.0" ============== [ { "domid": 31, "config": { "c_info": { "type": "hvm", "name": "centos7.0", "uuid":

I'm preparing to virtualize a Windows server onto a Linux system under virsh. Initial results are looking good, but an issue that's come up is the need to log into the Linux system prior to being able to access the Windows system for updates. Is there a way to "connect" the virsh console directly to a physical Linux terminal? EG: Ctl+Alt+F8 to access the Windows virsh

On 05/15/2014 11:34 AM, Nagaraj Mandya wrote: > Hello, > I have a Java application from which I am invoking the "virsh console" > command to access the console of a VM. I invoke the virsh command using > ProcessBuilder.start(). However, I am unable to communicate with the stdin > of the VMs console through the OutputStream of the Process object. > > When I

Hi folks, I have run into a confusing problem. My initial problem is: Conga does not offer "Add a virtual machine service". So I googled and found a RedHat advisory on that: http://rhn.redhat.com/errata/RHBA-2009-1623.html which points updates that should fix this. I checked on my cluster, but the relevant packages are current (and even if ALL packages are current it does not work).

Hello, I have a Java application from which I am invoking the "virsh console" command to access the console of a VM. I invoke the virsh command using ProcessBuilder.start(). However, I am unable to communicate with the stdin of the VMs console through the OutputStream of the Process object. When I invoke "virsh console" from within Java, I see the following messages on

Hi all, Are there equivalent xe subcommands to ''xm sysrq'' and ''xm dump-core''? I looked up xe''s help message and hidden subcommands in source code but cannot find. -- Regards Yu Zhiguo _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hello All, I am trying following steps: 1. Untar a gzip image 2. virsh create NAME.xml ( for the image) 3. virsh console NAME The above steps are done for four times on different files. In step 3 above for one out of four VMs (usually the first one), when I try to login:, typing the first letter of password brings me back to "login:" prompt. Then for the next four tries

Hi, I'm using virsh to instance a VM in my environment, but I'm running on some issues. I created the following domain file: <domain type='kvm'> <name>demovm</name> <uuid>4a9b3f53-fa2a-47f3-a757-dd87720d9d1d</uuid> <memory unit='KiB'>4194304</memory> <currentMemory

Hello, I've got a 2 node HP DL580 cluster supported by a Fibrechannel SAN with dual FC cards, dual switches and an HP EVA on the back end.? All SAN disks are multipathed.? Installed software is: Redhat 5.3 ocfs2-2.6.18-128.1.14.el5-1.4.2-1.el5 ocfs2-tools-1.4.2-1.el5 ocfs2console-1.4.2-1.el5 Oracle RAC 11g ASM Oracle RAC 11g Clusterware Oracle RAC 10g databases OCFS2 isn't being used by