similar to: xend communication with xenstored

Hi, I want to know how everything communicates with XenStore. Do domUs use the front-end/back-end driver to dom0 and then the back-end driver contacts xenstored? In particular, how do the xenstore-* commands work on a dom0 and domU? And when should unix-domain sockets be used to communicate with xenstored? Thanks, Hayawardh _______________________________________________ Xen-users mailing

I''ve been trying to track down just why talking to XenD is resulting in so much CPU time being comsumed by both xend & xenstored. As a test case, I''m running ''virsh dominfo demo'' which results in a single HTTP request to Xend to fetch domain info, eg ''GET /xend/domains/demo'' Run this in a tight loop & I''ll see xenstored

Package: xen-utils-4.0 Version: 4.0.1-2 Severity: normal Tags: squeeze I have 3 VM running. I have upgraded debian squeeze to 6.0.1 (new kernel package 2.6.32-31) and restarted my server. VM were still running. After reboot I could not start xend service (from init.d). I got following errors: kern.log: Mar 22 15:07:30 router kernel: [53888.212756] xenstored[7232]: segfault at 7fff056b5ff8 ip

Package: xen-utils-common Version: 3.0.3-0-2 Severity: normal There should be a clean and clearly defined way to restart all the Xen daemons in the case of error. If the file /var/lib/xenstored/tdb is corrupt then you must stop xenstored, rm the file, and then restart it. Currently there is no defined way of doing this so the solution is to kill -9 the process, rm the file, and then reboot. --

Hi, I have compiled xen-unstable (using hg clone http://xenbits.xensource.com/xen-unstable.hg). I have successfully booted into the dom0 kernel. output of xm list: Name ID Mem VCPUs State Time(s) Domain-0 0 932 1 r----- 591.2 But whenever I xm create, I get: # xm create /etc/xen/domu1 Using config file

I recently installed Fedora 7, Xen with Windows Vista in a VM using the Virtual Machine Manager tool. Everything has worked great but now I can not get the VM to start during Linux boot. I made sure xend and xendomain are started using chkconfig. Everything I have read talked about placing a .hvm file in the /etc/xen/auto directory. The Virtual Machine Manager tool did not create a .hvm file

Hi, I''ve been trying to boot from a RHEL4 install iso without much luck (the xen way). The Host is: RHEL 5.1 xen-3.0.3-41.el5 Here is my guest config: # -*- mode: python; -*- #============================================================================ # Python configuration setup for ''xm create''. # This script sets the parameters used when a domain is created using

Hi All, I just tried a new installation of Ubuntu 10.04 (64bit) + Xen and am having some trouble starting XEN. I am using the latest mercurial checkout (4.0.2-rc2) and the only change I made was to Config.mk to enable building the OCAML version of xenstored. " CONFIG_OCAML_XENSTORED ?= y". I am using the same kernel I built earlier for a similar Ubuntu 10.04-64bit / Xen 4.0.0

Waay back at the end of 3.0.3 dev cycle I brought up the issue of XenD running far too many xenstore transactions per-request http://lists.xensource.com/archives/html/xen-devel/2006-10/msg00487.html Short summary: # nc -U /var/lib/xend/xend-socket GET /xend/domain/test Resulted in approx 16 xenstore transactions for a domain with one disk and one NIC - this increases as # of devices

I just downloaded Xen-4.1.1 from xen.org, compiled it, and installed it. I then compiled kernel 3.0.0 and added the hypervisor and dom0 kernel in a grub 2 entry. After booting, I executed "xl list," to confirm the hypervisor was running. I was greeted with this message: libxl: error: libxl.c:56:libxl_ctx_init Is xenstore daemon running? failed to stat /var/run/xenstored.pid: No such

I''m currently running snv_76 on my laptop to run a windows XP hvm domU. Everything has been working great until recently when I started getting the following messages during boot (from dmesg): Dec 11 16:31:19 pdlaptop xenstored: [ID 702911 daemon.error] Checking store ... Dec 11 16:31:19 pdlaptop xenstored: [ID 702911 daemon.error] Checking store complete. Dec 11 16:31:19 pdlaptop

I am working on a security tool that monitors various components (IDT, SSDT, etc) of a domU using VM introspection. Currently, we''re using a polling method to monitor these in-core structions. We would like to be able to use a blocking method instead. I.e. specify "interesting" memory ranges and then wait until they are modified. How can I get the hypervisor to alert a

As any other daemon, I''d assume it should be possible to restart xenstored (i.e. if it crashed or if, during development, a fix was made to it that needs to be tested). However, as I learned after over a day of digging, things don''t work anymore after doing so: Since the watches are transient, they''re lost with the daemon going away. Right now I specifically need this in

Package: xen-utils-4.0 Version: 4.0.1-2 Hi, When you change XENCONSOLED_ARGS in /etc/default/xend, there's no normal way to apply it. Even if you do '/etc/init.d/xend stop', that doesn't stop xenconsoled, despite the fact the analogous 'start' action did start it. There isn't even a separate init script action to stop it, it has to be killed manually. Same goes for

Hi, I want to perform pass through I/O from my domU. I guess I would need an additional network card for the same. Is there any preference on the second network card I should get or any one is fine? I have a x86_64 machine with Cent OS 4.4 running. Are there any additional considerations that I cannot see - Kindly let me know. Thanks, Asim _______________________________________________

Hi Do you know some library that have a function for set resources, like memory and cap of processor, without the "xm" and "libvirt". For example: The library libxenstat just take informations about the VMs... Do you know something for set resource with xend or xenstat? thank''s Leandro _______________________________________________ Xen-devel mailing list

Hi, For anyone who is interested; I created some basic scripts based on my current iSCSI block script. http://kinkrsoftware.nl/contrib/xen/block-netapp http://kinkrsoftware.nl/contrib/xen/netapp-lun.py Basically these two scripts allow you to start a vfiler with a qtree of customers. You log in the NetApp upon boot, and can use: netapp://customer1/disk1 It is work in progress... because I

Hi, For anyone who is interested; I created some basic scripts based on my current iSCSI block script. http://kinkrsoftware.nl/contrib/xen/block-netapp http://kinkrsoftware.nl/contrib/xen/netapp-lun.py Basically these two scripts allow you to start a vfiler with a qtree of customers. You log in the NetApp upon boot, and can use: netapp://customer1/disk1 It is work in progress... because I

Hans van Kranenburg writes ("[PATCH 08/13] xen init script: rewrite xenstored start logic"): > -XENSTORED="$ROOT"/bin/xenstored > +# In /etc/default/xen, the user can set XENSTORED, which has to be either > +# 'xenstored' or 'oxenstored'. In here, we add the version specific path. > +if [ -n "$XENSTORED" ]; then > +

Package: xen-utils-common Version: 4.0.0-1 Severity: important After running modules_setup you need to have the following line: [ -x /sbin/restorecon ] && /sbin/restorecon -R /dev/xen The reason is that the module load causes the kernel to create device nodes in the devtmpfs. This bypasses the udev code for labelling the device node and results in xenstored being unable to access