similar to: Revisiting XenD / XenStored performance / scalability issues

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

Hi all, xend communicates with xenstored using unix domain sockets right? So, would it be possible to convert the unix domain sockets to tcp/ip sockets and let xenstored run on a different machine? Regards, Hayawardh _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

What follows below is an outline of what we''re changing in Xen startup for Fedora 8. I know historically when getting into initscripts you tend to hit distro specific issues. So I''m posting this to see if there''s any interest from others in having these changes integrated upstream. I''d like to thing that with a few minor tweaks this is general enough to be

Hi I tried building xen on my IA64 machine. It builds and installs smoothly. But I have not been able to start xend. I get the error in /var/log/xen/xend.log as below: [2007-06-14 05:02:01 xend 26504] WARNING (XendAuthSessions:27) python-pam is required for XenAPI support. [2007-06-14 05:02:01 xend 26520] INFO (SrvDaemon:322) Xend Daemon started [2007-06-14 05:02:01 xend 26520] INFO

I have an installation of 32bit SLES 10.1 on 2 servers in my lab that I just rebuilt. I applied the files from xen-3.1.0-install-x86_32.tgz and broke all the virtman functions. The errors I got indicate some missing python classes, specifically xen.install. I''m not sure why. This is what I get when I try to run virtman from the command line. If I try to run it from yast i get nothing.

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

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 am using XEN-4.1.2 and linux-2.6.32 as dom0. After I upgraded stackless python from 2.5 to 2.7 (and rebuilt xen). XenAPI became unusable, I spent some time to investigate XenAPI,py, it looks fine. So, I guess xend has problem with python 2.7, because it always returned method unknown. Do I have to tweak xend to let it support python 2.7? Thanks, Eric /root # python Python 2.7.5 Stackless

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 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

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

Package: xen-utils-common Version: 3.3.1-1 ck-a800:/home/kkadmin# /etc/init.d/xend start Starting XEN control daemon: xenstored xenconsoled xendFATAL: Failed to initialize dom0 state: Invalid argument . failed! xend.log [2009-07-12 06:55:40 15120] INFO (SrvDaemon:331) Xend Daemon started

Hi, My base system is Gentoo x64, and I compiled my kernel with Xen paravirtualization support. The kernel can boot without any problem in native mode. But when boot in Xen mode, I cannot start the xenstored service. This is my grub config file: title Gentoo x64 kernel-3.2.11-gentoo root (hd0,2) kernel /boot/kernel-3.2.11-gentoo root=UUID=38213e99-588e-4a7d-a215-8835f7afb1c4\

Hi, I have recompiled xen-3_3.4.3~rc3-1 in Lenny, together with the 2.6.32-10 kernel. While my dom0 boots without issue under Xen, xend refuses to start. I have cut/past my xend.log is bellow. Is there any reason why a backport of this version of Xen wouldn't work in Lenny? Should I try the already compiled SID binaries in Lenny without trying to build myself? Cheers, Thomas When I start

Hi, I am posting this message because past 36 hours have been nightmare for me. I finally have solved the problem I by temporarily moving put the xml files from /var/lib/xend directories reboot then xend started. And DomU''s were failing to start the above xml files I kept back and got all DomU''s back. I am very very surprised.I do not have any logical answer to this some one

xenstored[14588]: segfault at 0000000000000030 rip 0000000000405c1c rsp 00007fffffbc3250 error 6 amd64, x86_64, current xen-unstable, 2.6.16, and I have no idea how to debug this. fresh installation, happens everytime I try to start xend (so I can create a first domU). xenstored is still running, but xend complains that it can''t connect. how can I help to find the problem? Regards,

*After running intensively (i.e. running >10 guests and migrating them all into other machines etc.) , I wasn''t able to * *run xen tools as the following messages show. * ** ># xm list Error: (9, ''Bad file descriptor'') Usage: xm list [options] [Domain, ...] List information about all/some domains. -l, --long Output all VM details in SXP

Package: xen-utils-3.2-1 Version: 3.2.1-2 Severity: normal Hi, # ps awux | grep /usr/lib/xen <nothing> # /etc/init.d/xend start Starting XEN control daemon: xend. # /etc/init.d/xend stop Stopping XEN control daemon: xend. # ps awux | grep /usr/lib/xen root 29826 0.2 0.1 2160 848 ? S 09:37 0:00 /usr/lib/xen-3.2-1/bin/xenstored --pid-file /var/run/xenstore.pid root

On Thu, Jun 4, 2015 at 11:57 AM, George Dunlap <dunlapg at umich.edu> wrote: > On Thu, Jun 4, 2015 at 6:03 AM, Sarah Newman <srn at prgmr.com> wrote: >> By default, /var/lib/xenstored is mounted tmpfs in centos 5 but this doesn't appear to be true for Xen4CentOS. This can cause performance issues as >> mentioned in https://bugzilla.redhat.com/show_bug.cgi?id=446089