xen May 2006

xen@lists.fedoraproject.org

69 participants
92 discussions

NDN: Re: Heads-up: Requiring PAE for running Xen
by Gateway＠redhat.com 20 May '06

20 May '06

Sorry. Your message could not be delivered to: christian paratschek,reflex.at (The name was not found at the remote site. Check that the name has been entered correctly.)

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NDN: Re: Heads-up: Requiring PAE for running Xen
by Gateway＠redhat.com 20 May '06

20 May '06

Sorry. Your message could not be delivered to: christian paratschek,reflex.at (The name was not found at the remote site. Check that the name has been entered correctly.)

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re: Heads-up: Requiring PAE for running Xen
by James Morris 19 May '06

19 May '06

Jeremy wrote: > As we move forward with Xen enablement, there's a desire for > being able to access more than 4 gigs of RAM on 32-bit Xen hosts. The > options for handling this are > 1) Another kernel. This is bad due to > a) we're running out of CD space already > b) keeping things matched up between the HV and the guest kernels > c) migration is worlds of pain with two types of kernels What about leaving the non-pae kernel out of the core distro and distributing it online only via extras? And document (b) and (c) as known issues which need to be evaluated carefully by users before installation. - James -- James Morris <jmorris(a)redhat.com>

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FC5 : xend won't start
by Ramesh Babu 18 May '06

18 May '06

Hi, Im having problems in starting xend in FC5. Below are the steps i performed to start it and i get "connection refused error". Please let me know if i miss something and help me in solving the issue. OS Version : [root@ramesh ~]# uname -a Linux rvrameshbabu 2.6.16-1.2111_FC5xen0 #1 SMP Thu May 4 21:51:32 EDT 2006 i686 i686 i386 GNU/Linux Xen version : [root@ramesh ~]# rpm -qa | grep xen xen-3.0.1-4 kernel-xenU-2.6.16-1.2111_FC5 kernel-xen0-devel-2.6.16-1.2111_FC5 kernel-xenU-devel-2.6.16-1.2111_FC5 kernel-xen0-2.6.16-1.2111_FC5 Steps performed : [root@ramesh ~]# xend start [root@ramesh ~]# tail -90 /var/log/xend.log [2006-05-15 17:45:00 xend] INFO (SrvDaemon:285) Xend Daemon started [2006-05-15 17:45:00 xend] INFO (SrvDaemon:289) Xend changeset: unavailable . [2006-05-15 17:45:00 xend] ERROR (SrvDaemon:299) Exception starting xend ((111, 'Connection refused')) Traceback (most recent call last): File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvDaemon.py", line 293, in run servers = SrvServer.create() File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvServer.py", line 106, in create root.putChild('xend', SrvRoot()) File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvRoot.py", line 40, in __init__ self.get(name) File "/usr/lib/python2.4/site-packages/xen/web/SrvDir.py", line 82, in get val = val.getobj() File "/usr/lib/python2.4/site-packages/xen/web/SrvDir.py", line 52, in getobj self.obj = klassobj() File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvDomainDir.py", line 39, in __init__ self.xd = XendDomain.instance() File "/usr/lib/python2.4/site-packages/xen/xend/XendDomain.py", line 550, in instance inst.init() File "/usr/lib/python2.4/site-packages/xen/xend/XendDomain.py", line 70, in init xstransact.Mkdir(VMROOT) File "/usr/lib/python2.4/site-packages/xen/xend/xenstore/xstransact.py", line 317, in Mkdir complete(path, lambda t: t.mkdir(*args)) File "/usr/lib/python2.4/site-packages/xen/xend/xenstore/xstransact.py", line 323, in complete t = xstransact(path) File "/usr/lib/python2.4/site-packages/xen/xend/xenstore/xstransact.py", line 20, in __init__ self.transaction = xshandle().transaction_start() File "/usr/lib/python2.4/site-packages/xen/xend/xenstore/xsutil.py", line 18, in xshandle xs_handle = xen.lowlevel.xs.xs() RuntimeError: (111, 'Connection refused') [root@ramesh ~]# ls -l /var/run/xen* -rwS--x--T 1 root root 5 May 15 17:45 /var/run/xenconsoled.pid -rw-r--r-- 1 root root 4 May 15 17:45 /var/run/xend.pid -rw------- 1 root root 5 May 15 17:45 /var/run/xenstore.pid /var/run/xenstored: total 0 srw------- 1 root root 0 May 15 17:45 socket srw-rw---- 1 root root 0 May 15 17:45 socket_ro [root@ramesh ~]# xm list Error: Error connecting to xend: No such file or directory. Is xend running? [root@ramesh ~]# thanks Ramesh

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VBS running out of loopbacks
by Jon Stone 18 May '06

18 May '06

Through some searching it appears that we are limited to 8 loopbacks /dev/loop[0-7] on a default FC5 install. This was noted when we started getting no backend can be found errors when trying to load a 9th VBS based guest. Is adding a basic option to /etc/modprobe.conf and rebooting the system the safest way to unload everything and get the loop module reloaded to support additional loopback devices? Or should we explore additional solutions? Right now the server's drive is one logical group with one logical volume taking up 100% of the disk. I do not want to engage any file system resizing and lvm resizing as this is a production environment. Thoughts on this are appreciated.

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Re: Heads-up: Requiring PAE for running Xen
by Josh Boyer 18 May '06

18 May '06

On Thu, 2006-05-18 at 03:41 +0200, Arjan van de Ven wrote: > > xen always needed p6 hardware (didnt run on k6-II for example), > > and AFAIK p6 supports PAE always, so not any lose here i think > > you lose pentium M's. Some of them. I have a Pentium M that has PAE. Though I just bought it about a month ago. josh

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Problem with xendomains
by sicurezza＠virtualsolution.net 17 May '06

17 May '06

Hi, I set /sbin/chkconfig --level 345 xendomains on But doesn't work. No output from command: /etc/init.d/xendomains start If i do: /etc/init.d/xendomains start name_of_my_virtualserver start with this warning: /etc/init.d/xendomains: line 67: log_success_msg: command not found xendomains stop works good but return this error.: /etc/init.d/xendomains stop Shutting down Xen domains: virtual7(save) .../etc/init.d/xendomains: line 67: log_success_msg: command not found How can i do to start all my virtual-servers ( clients ) on startup? ( i have think about a line on rc.local for every clients.. like: /etc/init.d/xendomains start virtual1 /etc/init.d/xendomains start virtual2 /etc/init.d/xendomains start virtual3 .... Someone start Xen clients with screen command ? Thanks

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Adding more space to the system withou using LVM in the host
by Ignacio Verona 17 May '06

17 May '06

Hi, I've a few Virtual Machines running FC5, the host is also FC5. I want to add some hd space to one of the VMs, and as they are using LVM, I think it shouldn't be so difficult. This is the line configuring the harddisk for the Xen VM: disk = [ 'file:/mnt/md0/xenM/autillo/autillo1,xvda,w' ] How do add other xvda? I want to create, for example /mnt/md0/xenM/autillo/autillo2 and add that space to the LVM in the VM. How should I do this? Maybe the solution is to export autillo2 as /dev/hdX or /dev/sdX? How should I format the file using mke2fs? Thanks a lot and sorry if the questions are easy to solve, but I'm still not clear about that things!

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Re: [Fedora-xen] Best Practice for backing up running Virtual Machines
by Lamont R. Peterson 17 May '06

17 May '06

On Tuesday 16 May 2006 12:06pm, Ignacio Verona wrote: > Thanks for your reply Lamont, > > unfortunately, there is no easy way I can migrate to LVM my virtual > machines, as it's a production server, with no spare partitions right > now. Which kind of backup software are you referring to? We have been > using backup PC for a while, and are pretty happy with that piece of > software. Will it make the work? (Please, reply to the whole list. Thanks :) ). I haven't used backup PC, so I can not comment on it. I was thinking of Amanda (for an open source choice) or TapeWare (looks like they changed to name to Backup Standard) [ http://www.yosemitetech.com/ ] for the best commercial backup software I have personally used. -- Lamont R. Peterson <lamont(a)gurulabs.com> Senior Instructor Guru Labs, L.C. [ http://www.GuruLabs.com/ ] GPG Key fingerprint: F98C E31A 5C4C 834A BCAB 8CB3 F980 6C97 DC0D D409

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Question on disk usage and allocation per guest
by Jon Stone 17 May '06

17 May '06

Our guest images are stored in /home and an ls -al lists their allocated sizes correctly. However a du -sh on the image only lists the actual usage within the image. And a df -h only shows actual disk usage for the entire server. How do we get a list of the allocated disk space? I assume that similar to memory, you cannot over-allocate disk space with Xen guests? Thanks

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xen May 2006