xen February 2012

xen@lists.fedoraproject.org

8 participants
10 discussions

execute commands from dom0 into domU
by silviu d 06 Jun '15

06 Jun '15

Hello, I was wondering if there is a way to execute commands from dom0 into domU without loging into domU with ssh. thanks

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Fwd: Memory offset in domU
by Huffen Doback 12 Feb '12

12 Feb '12

---------- Forwarded message ---------- From: Huffen Doback <huffen.doback(a)gmail.com> Date: Sun, Feb 12, 2012 at 1:14 AM Subject: Memory offset in domU To: Huff Doback <huffen.doback(a)gmail.com> Cc: xen-users(a)lists.xensource.com I'm running Xen-3.0 on CentOs 5.7 x86_64. When I run free -tm in a DomU the total amount of RAM is never what's defined in the vm .cfg. In some OS's free reports less than what's configured, and in others it reports that there's more. What can I do to make the vm see the correct amount of RAM that's been allocated for it?

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Memory offset in DomUs
by Huffen Doback 08 Feb '12

08 Feb '12

I'm running Xen-3.0 on CentOs 5.7 x86_64. When I run *free -tm* in a DomU the total amount of RAM is never what's defined in the vm .cfg. In some OS's *free* reports less than what's configured, and in others it reports that there's more. What can I do to make the vm report the correct amount of RAM that's been allocated for it?

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blocked domain
by Gergely Buday 08 Feb '12

08 Feb '12

Hi, I tried to install a fedora onto my xen domain with virt-manager. At the third attempt I reached some success: # xm list Name ID Mem VCPUs State Time(s) Domain-0 0 3005 1 r----- 6236.5 MobileOtp 1024 1 0.0 MobileOtp2 1024 1 0.0 MobileOtp3 3 800 1 -b---- 338.4 But, when trying to issue # xm console MobileOtp3 the terminal becomes stuck and only killing the xenconsole process frees it. The installation itself did not run, how can I step ahead? - Gergely

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Fedora 16 [3.1.0-7.fc16.i686] and Xen [4.1.2] problem
by Rajeshwar Singh Janwar 07 Feb '12

07 Feb '12

Hi All, I have installed Fedora 16. [root@RSJ boot]# uname -a Linux RSJ 3.1.0-7.fc16.i686 #1 SMP Tue Nov 1 21:00:16 UTC 2011 i686 i686 i386 GNU/Linux [root@RSJ boot]# Then: 1. yum intsall xen xen got install successfully but it could not update grub entry with xen. 2. [root@RSJ boot]# xl info libxl: error: libxl.c:56:libxl_ctx_init Is xenstore daemon running? failed to stat /var/run/xenstored.pid: No such file or directory cannot init xl context [root@RSJ boot]# 3. Then i manually updated the grub [entry = /etc/grub.d/20_linux_xen], now grub.conf: ----------------/etc/grub2/grub.conf-------------------------------- # # DO NOT EDIT THIS FILE # # It is automatically generated by grub2-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then load_env fi set default="${saved_entry}" if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function load_video { insmod vbe insmod vga insmod video_bochs insmod video_cirrus } set timeout=5 ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/10_linux ### menuentry 'Fedora Linux, with Linux 3.1.0-7.fc16.i686' --class fedora --class gnu-linux --class gnu --class os { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos6)' search --no-floppy --fs-uuid --set=root a61dbabc-0d61-41cd-a2c9-3857ae9ee060 echo 'Loading Linux 3.1.0-7.fc16.i686 ...' linux /vmlinuz-3.1.0-7.fc16.i686 root=/dev/mapper/vg_rsj-lv_root ro rd.md=0 rd.dm=0 rd.lvm.lv=vg_rsj/lv_root KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 rd.lvm.lv=vg_rsj/lv_swap LANG=en_US.UTF-8 echo 'Loading initial ramdisk ...' initrd /initramfs-3.1.0-7.fc16.i686.img } menuentry 'Fedora Linux, with Linux 3.1.0-7.fc16.i686 (recovery mode)' --class fedora --class gnu-linux --class gnu --class os { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos6)' search --no-floppy --fs-uuid --set=root a61dbabc-0d61-41cd-a2c9-3857ae9ee060 echo 'Loading Linux 3.1.0-7.fc16.i686 ...' linux /vmlinuz-3.1.0-7.fc16.i686 root=/dev/mapper/vg_rsj-lv_root ro single rd.md=0 rd.dm=0 rd.lvm.lv=vg_rsj/lv_root KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 rd.lvm.lv=vg_rsj/lv_swap LANG=en_US.UTF-8 echo 'Loading initial ramdisk ...' initrd /initramfs-3.1.0-7.fc16.i686.img } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### menuentry 'Fedora Linux, with Xen 4.1.2 and Linux 3.1.0-7.fc16.i686' --class fedora --class gnu-linux --class gnu --class os { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos6)' search --no-floppy --fs-uuid --set=root a61dbabc-0d61-41cd-a2c9-3857ae9ee060 echo 'Loading Xen 4.1.2 ...' multiboot /xen-4.1.2.gz placeholder echo 'Loading Linux 3.1.0-7.fc16.i686 ...' module /vmlinuz-3.1.0-7.fc16.i686 placeholder root=/dev/mapper/vg_rsj-lv_root ro rd.md=0 rd.dm=0 rd.lvm.lv=vg_rsj/lv_root KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 rd.lvm.lv=vg_rsj/lv_swap LANG=en_US.UTF-8 echo 'Loading initial ramdisk ...' module /initramfs-3.1.0-7.fc16.i686.img } menuentry 'Fedora Linux, with Linux 3.1.0-7.fc16.i686 (recovery mode)' --class fedora --class gnu-linux --class gnu --class os { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos6)' search --no-floppy --fs-uuid --set=root a61dbabc-0d61-41cd-a2c9-3857ae9ee060 echo 'Loading Linux 3.1.0-7.fc16.i686 ...' linux /vmlinuz-3.1.0-7.fc16.i686 root=/dev/mapper/vg_rsj-lv_root ro single rd.md=0 rd.dm=0 rd.lvm.lv=vg_rsj/lv_root KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 rd.lvm.lv=vg_rsj/lv_swap LANG=en_US.UTF-8 echo 'Loading initial ramdisk ...' initrd /initramfs-3.1.0-7.fc16.i686.img } ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry "Windows NT/2000/XP (loader) (on /dev/sda1)" --class windows --class os { insmod part_msdos insmod ntfs set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 9C78AAFE78AAD5F4 drivemap -s (hd0) ${root} chainloader +1 } ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### ### BEGIN /etc/grub.d/90_persistent ### ### END /etc/grub.d/90_persistent ### -------------------------------------------------------------------------- After reboot and booting with XEN kernel, it show: elf_xen_note_check: ERROR: Will only load images built for the generic loader or Linux images ****************************************** Panic on CPU0 Could not set up DOM0 guest OS *** *************************************** Is linux kernel 3.1.0-7.fc16.i686 comes with XEN kernel modules compiled ? What is going wrong, any pointers ? Regards, Raj

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Re: [Fedora-xen] Failed to bring up network interface
by Konrad Rzeszutek Wilk 06 Feb '12

06 Feb '12

On Sat, Feb 04, 2012 at 02:48:17AM +0400, Sergey A. Pechiony wrote: > -----Original Message----- > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] > Sent: Friday, February 03, 2012 8:18 PM > To: Sergey A. Pechiony > Cc: xen(a)lists.fedoraproject.org > Subject: Re: [Fedora-xen] Failed to bring up network interface > > > > Can you attach the dmesg and proc/interrupts when run under baremetal and > > when run under Xen please? > > ok. May be you can find something. Yup, it is as I was thinking. Your machine does not export an ACPI table. And we use that to figure out the interrupt layout. If there is an option in the BIOS, see if you can turn ACPI on.

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virt-manager / install fedora image
by Gergely Buday 06 Feb '12

06 Feb '12

Hi, I would like to install a fedora as a subdomain operating system on my fedora box. virt-manager throws the following error: libvirtError: POST operation failed: xend_post: error from xen daemon: (xend.err 'Error creating domain: Disk image does not exist: /home/gergoe/Downloads/Fedora-16-x86_64-Live-Security.iso') I wonder as /home/gergoe/Downloads/Fedora-16-x86_64-Live-Security.iso exists. What can be the problem? - Gergely

2 1

Failed to bring up network interface
by Sergey A. Pechiony 03 Feb '12

03 Feb '12

I have a problem with network interfaces after installing Xen. [root@dom0 ~]# uname -r 3.2.2-1.fc16.i686.PAE [root@dom0 ~]# yum list | grep xen-hyper xen-hypervisor.i686 4.1.2-2.fc16 @updates With default kernel system works perfectly. But after booting with xen kernel # dmesg | grep eth [ 15.860121] e100 0000:00:04.0: eth0: addr 0xfeafe000, irq 9, MAC addr 00:e0:81:21:53:96 [ 15.884513] e100 0000:00:05.0: eth1: addr 0xfeafd000, irq 5, MAC addr 00:e0:81:21:53:97 [ 18.506585] udevd[458]: renamed network interface eth1 to em2 [ 18.568406] udevd[457]: renamed network interface eth0 to em1 # lsmod | grep e100 e100 36014 0. mii 13311 1 e100 # lspci | grep Ethernet 00:04.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 08) 00:05.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 08) # /etc/init.d/network status Configured devices: lo em1 em2 Currently active devices: lo # ifup em1 RTNETLINK answers: Function not implemented ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Failed to bring up em1. # ifconfig em1 em1 Link encap:Ethernet HWaddr 00:E0:81:21:53:97.. inet addr:192.168.129.16 Bcast:192.168.131.255 Mask:255.255.252.0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000. RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) # ifconfig em1 192.168.129.1 SIOCSIFFLAGS: Function not implemented Network interface has network address but can't to bring up. I don't understand that happens. A difference between loadings only in irq. 20,21 for default kernel and 5,9 for xen kernel. But 5 and 9 irq is not used anywhere more.

2 1

Failed to bring up network interface
by Sergey A. Pechiony 03 Feb '12

03 Feb '12

I have a problem with network interfaces after installing Xen. Network interface has network address but can't to bring up. [root@dom0 ~]# uname -r 3.2.2-1.fc16.i686.PAE [root@dom0 ~]# yum list | grep xen-hyper xen-hypervisor.i686 4.1.2-2.fc16 With default kernel system works perfectly. But after booting with xen kernel # dmesg | grep eth [ 15.860121] e100 0000:00:04.0: eth0: addr 0xfeafe000, irq 9, MAC addr 00:e0:81:21:53:96 [ 15.884513] e100 0000:00:05.0: eth1: addr 0xfeafd000, irq 5, MAC addr 00:e0:81:21:53:97 [ 18.506585] udevd[458]: renamed network interface eth1 to em2 [ 18.568406] udevd[457]: renamed network interface eth0 to em1 # lsmod | grep e100 e100 36014 0. mii 13311 1 e100 # lspci | grep Ethernet 00:04.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 08) 00:05.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 08) # ifup em1 RTNETLINK answers: Function not implemented ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Failed to bring up em1. # ifconfig em1 192.168.129.1 SIOCSIFFLAGS: Function not implemented I don't understand that happens. A difference between loadings only in irq. 20,21 for default kernel and 5,9 for xen kernel. But 5 and 9 irq is not used anywhere more.

1 0

(no subject)
by srinivas d 01 Feb '12

01 Feb '12

D.Srinivas

1 0

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xen February 2012