|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] how to mount domU images on dom0
On Mon, 16 Nov 2009 23:31:02 +0530, Tapas Mishra <tapas@xxxxxxxxxxxx> wrote: > Thanks a lot for the reply by the time you replied luckily without any > logical reason the xm console mydomU had booted > then I executed > apt-get install ubuntu-desktop linux-image-virtual lvm2 user-setup > it took an hour to do a lot of downloads and since then it has been > setting up a lot of things which I feel are the desktop environments > of \ > Ubuntu since you mentioned Debian so I am curious to know in terms of > stability since today only I was able to finish downloading all my > DVDs of Debian so in terms of stability did you felt it better than > Ubuntu or any other distribution if I talk about Xen > When the Ubuntu 8.04 LTS version came out, I did a fresh install rather than an upgrade and moved to Xen as a virtualization platform. It was at this time that I encountered a lot of issues that required patching to make Ubuntu behave in the virtualized environment. Because of the patching I had done, each time an apt-get upgrade updated my Xen installation, I had to reapply the patches for Ubuntu. The stability issues I had weren't specific to Xen. Nearly each time I upgraded Ubuntu, one of my underlying services (DNS, Email, Web Server, etc.) would go offline for what appeared to be mysterious reasons. Although I really like Ubuntu in a desktop environment, I began to feel that for my production servers, Ubuntu was a little too bleading edge. As a result, I moved to Debian Lenny and have not experienced nearly as many issues with package upgrades. It just works. I use the site How to Forge as a reference when beginning new projects. There are several tutorials for various distributions. There is a tutorial for installing Xen onto Debian Lenny at the following link. There are similar tutorials for Ubuntu as well if you decide to stick with that distribution. http://www.howtoforge.com/virtualization-with-xen-on-debian-lenny-amd64 If you feel like trying Debian, you may want to try the minimal Debian package (http://www.debian.org/CD/netinst/). It is a much smaller download but requires an Internet connection during installation. If you have questions that aren't Xen specific, you can feel free to contact me off list. Within reason, I can try to point you to resources that I have found useful. > On Mon, Nov 16, 2009 at 11:13 PM, Thomas Jensen > <tom.jensen@xxxxxxxxxxxxxxxxxxxxxx> wrote: >> On Mon, 16 Nov 2009 21:42:50 +0530, Tapas Mishra <tapas@xxxxxxxxxxxx> >> wrote: >>> I am installing domU image >>> >>> after executing the following command >>> >>> xen-create-image --hostname=mydomU --ip 192.168.1.22 --gateway >>> 192.168.1.250 --netmask 255.255.255.0 --broadcast 192.168.1.255 >>> --dist=jaunty Â--mirror=http://archive.ubuntu.com/ubuntu --size=4Gb >>> --memory=64Mb --swap=128MB --arch=i386 --partitions=with-data Â--boot >>> --passwd --role udev >>> >>> >>> I get following message at the last >>> >>> >>> >>> Creating ext3 filesystem on /workarea/xen/domains/mydomU/data.img >>> Done >>> Installation method: debootstrap >>> Done >>> >>> Running hooks >>> Done >>> >>> Role: udev >>>    File: /etc/xen-tools/role.d/udev >>> Role script completed. >>> >>> Creating Xen configuration file >>> Done >>> Setting up root password >>> Enter new UNIX password: >>> Retype new UNIX password: >>> passwd: password updated successfully >>> All done >>> root@abhitech-desktop:~# Started new Xen guest: mydomU >>> [/etc/xen/mydomU.cfg] >>> >>> >>> Logfile produced at: >>>    Â/var/log/xen-tools/mydomU.log >>> >>> Now here is the problem since the terminal on which it happened cursor >>> is blinking it is not even giving me the shell to log in or execute >>> any command so someone on IRC suggested me to mount the images >>> >> I too started out using Xen with Ubuntu for both Dom0 and DomU machines. >> At the time, I was using the Ubuntu 8.04 LTS version and used the distro >> specific install through apt-get. ÂAnyhow, I encountered a lot of >> problems >> with console logins. ÂAfter searching the Internet, I found I wasn't >> alone. >> I discovered a lot of patches required to fix login issues as well as >> problems with the shutdown of Ubuntu domains. ÂYou have mentioned both >> of >> these problems in your recent posts. >> >> I have sinced moved to Debian Lenny for Dom0 and all DomU machines. >> ÂThat >> change has made a huge difference in the stability I have experienced >> with >> Xen. >> >> However, I still had to add configuration variables to my config files to >> ensure the console matches between Xen and my Debian virtual machine. >> ÂThe >> instructions I used were on the Xen wiki website and was listed as a >> known >> issue with Debian. >> >> Despite those configuration changes, I sometimes still see the blank >> console as you described when using the xm console command. ÂWhenever >> this >> occurs, I simply hit the enter key on the keyboard and the login prompt >> shows up on my console. >> >> It is by no means scientific and I don't have a technical explanation for >> why this occurs. ÂBut it works and that is good enough for me in most >> situations. >>> >>> Before I do that Âxm list shows me the following output >>> >>> root@abhitech-desktop:~# xm list >>> Name                    ÂID  Mem VCPUs   ÂState >>> Time(s) >>> Domain-0                   0  364   1   r----- >>> 2547.1 >>> mydomU                    2  Â64   1   -b---- >> >>> 9.5 >>> root@abhitech-desktop:~# >>> >>> >>> and if I execute xm console mydomU then it gave me erro mydomU is not >>> installed where as >>> in the domains directory I have >>> root@abhitech-desktop:/workarea/xen/domains/mydomU# ls >>> data.img Âroot.img Âswap.img >>> all the above files whose sizes are >>> >>> root@abhitech-desktop:/workarea/xen/domains/mydomU# du -ch ./* >>> 194M Â./data.img >>> 719M Â./root.img >>> 4.0K Â./swap.img >>> 913M Âtotal >>> >> I also started out using disk image files. ÂI have sinced moved to using >> logical partitions through LVM for my DomU disks. ÂIt is very easy to >> mount >> these logical volumes in Dom0 with the mount command. ÂMounting should >> be >> done when the DomU is not running. ÂOne mounted, you can edit files for >> the >> DomU from the Dom0 console. >>> >>> Now how should I proceed >>> console is not letting me log in inspite of my repeated attempts >>> >>> >>> >>> >>> >>> >>> On Mon, Nov 16, 2009 at 9:24 PM, Arpan Jindal <jindalarpan@xxxxxxxxx> >>> wrote: >>>> can you explain it in details what are you doing and where you are >> facing >>>> this issue? >>>> >>>> On Mon, Nov 16, 2009 at 9:22 PM, Tapas Mishra <tapas@xxxxxxxxxxxx> >> wrote: >>>>> >>>>> how to mount the domU images on dom0 to chroot them >>>>> Âmount it on the dom0 and chroot to it. ÂI am getting an error xen >>>>> console mydomU >>>>> >>>>> _______________________________________________ >>>>> Xen-users mailing list >>>>> Xen-users@xxxxxxxxxxxxxxxxxxx >>>>> http://lists.xensource.com/xen-users >>>> >>>> >>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@xxxxxxxxxxxxxxxxxxx >>> http://lists.xensource.com/xen-users >> _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |