Hi, Is it possible to start a HVM domU via NFS?? I''m having problems trying to do it. I don''t have any problem when I try with paravirtualized domU. Any idea or suggestion? Another question: is it possible to start a domU via NFS in localhost?? I know it''s tricky but I need for a project I''m working. Thanks anyway!! -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4757870.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, Yes you can, we do it already. For the second, not sure but I can''t see why you would want to? Thanks Ian -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of lsm_7 Sent: 01 September 2011 11:54 To: xen-users@lists.xensource.com Subject: [Xen-users] Question about NFS domUs Hi, Is it possible to start a HVM domU via NFS?? I''m having problems trying to do it. I don''t have any problem when I try with paravirtualized domU. Any idea or suggestion? Another question: is it possible to start a domU via NFS in localhost?? I know it''s tricky but I need for a project I''m working. Thanks anyway!! -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4757 870.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thanks for the reply. Could you explain me how to start a HVM domU via NFS?? It would very useful for me... My domU configuration file is: # # Kernel # kernel = ''/usr/lib/xen-4.1/boot/hvmloader'' builder = ''hvm'' # # Hostname # name = ''natty.i2cat.net'' # # Memory # memory = ''1024'' shadow_memory = 8 acpi = 1 apic = 1 # # UUID # uuid = ''0702dad0-644a-4263-9675-cec03359b677'' # # CPUs # vcpus = 1 # # Networking # device_model = ''/usr/lib/xen-4.1/bin/qemu-dm'' vif = [ ''type=ioemu, mac=00:16:3E:FD:77:0A, bridge=eth1'' ] # # Disk device(s). # #disk = [ ''phy:/dev/vservers/natty.i2cat.net-disk,ioemu:hda,w'', # ''phy:/dev/cdrom,hdc:cdrom,r'' # ''file:/images/ubuntu-11.04-desktop-i386.iso,hdc:cdrom,r'' # ] root = ''/dev/nfs'' nfs_server = ''chucknorris.i2cat.net'' nfs_root = ''/mnt/virtuals/natty'' boot=''dc'' sdl=0 # # VNC Config # vfb = [ ''type=vnc,vncdisplay=96,vncpasswd=ubuntu'' ] serial=''pty'' usbdevice=''tablet'' localtime = 1 # # Behaviour # on_poweroff = ''destroy'' on_reboot = ''restart'' on_crash = ''restart'' Related to the second question, I''m migrating virtual machines when my nodes of the virtualization cluster are collapsed. Most of the nodes are diskless, so their disk is mounted via NFS connected to a central node. This central node has a partition in LVM for everyone of the diskless nodes. Then, all domUs are executed in these nodes must be started via NFS. But these domUs can be migrated to the central node, so domUs can be started without NFS but the config should be changed... so it is not a great idea... Then, the idea is to start all the domUs via NFS independently of the node where it''s executed. I don''t know if my explanation is clear... I hope somebody can help me! Thanks Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761604.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
If you have your nfs share mounted to say /mnt/vpsdata you don''t need what you have, just use disk = [ ''file:/mnt/vpsdata/example.img,hda,w'' ] thanks -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of lsm_7 Sent: 02 September 2011 10:01 To: xen-users@lists.xensource.com Subject: [Xen-users] RE: Question about NFS domUs Thanks for the reply. Could you explain me how to start a HVM domU via NFS?? It would very useful for me... My domU configuration file is: # # Kernel # kernel = ''/usr/lib/xen-4.1/boot/hvmloader'' builder = ''hvm'' # # Hostname # name = ''natty.i2cat.net'' # # Memory # memory = ''1024'' shadow_memory = 8 acpi = 1 apic = 1 # # UUID # uuid = ''0702dad0-644a-4263-9675-cec03359b677'' # # CPUs # vcpus = 1 # # Networking # device_model = ''/usr/lib/xen-4.1/bin/qemu-dm'' vif = [ ''type=ioemu, mac=00:16:3E:FD:77:0A, bridge=eth1'' ] # # Disk device(s). # #disk = [ ''phy:/dev/vservers/natty.i2cat.net-disk,ioemu:hda,w'', # ''phy:/dev/cdrom,hdc:cdrom,r'' # ''file:/images/ubuntu-11.04-desktop-i386.iso,hdc:cdrom,r'' # ] root = ''/dev/nfs'' nfs_server = ''chucknorris.i2cat.net'' nfs_root = ''/mnt/virtuals/natty'' boot=''dc'' sdl=0 # # VNC Config # vfb = [ ''type=vnc,vncdisplay=96,vncpasswd=ubuntu'' ] serial=''pty'' usbdevice=''tablet'' localtime = 1 # # Behaviour # on_poweroff = ''destroy'' on_reboot = ''restart'' on_crash = ''restart'' Related to the second question, I''m migrating virtual machines when my nodes of the virtualization cluster are collapsed. Most of the nodes are diskless, so their disk is mounted via NFS connected to a central node. This central node has a partition in LVM for everyone of the diskless nodes. Then, all domUs are executed in these nodes must be started via NFS. But these domUs can be migrated to the central node, so domUs can be started without NFS but the config should be changed... so it is not a great idea... Then, the idea is to start all the domUs via NFS independently of the node where it''s executed. I don''t know if my explanation is clear... I hope somebody can help me! Thanks Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761 604.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Re the second point. So your using a xen server also as an NFS server? I would probably suggest you don''t and have the NFS separate as you will be putting extra load on the nfs/xenserver server. If you are worried about nodes dying then wouldn''t it be better to cluster? -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of lsm_7 Sent: 02 September 2011 10:01 To: xen-users@lists.xensource.com Subject: [Xen-users] RE: Question about NFS domUs Thanks for the reply. Could you explain me how to start a HVM domU via NFS?? It would very useful for me... My domU configuration file is: # # Kernel # kernel = ''/usr/lib/xen-4.1/boot/hvmloader'' builder = ''hvm'' # # Hostname # name = ''natty.i2cat.net'' # # Memory # memory = ''1024'' shadow_memory = 8 acpi = 1 apic = 1 # # UUID # uuid = ''0702dad0-644a-4263-9675-cec03359b677'' # # CPUs # vcpus = 1 # # Networking # device_model = ''/usr/lib/xen-4.1/bin/qemu-dm'' vif = [ ''type=ioemu, mac=00:16:3E:FD:77:0A, bridge=eth1'' ] # # Disk device(s). # #disk = [ ''phy:/dev/vservers/natty.i2cat.net-disk,ioemu:hda,w'', # ''phy:/dev/cdrom,hdc:cdrom,r'' # ''file:/images/ubuntu-11.04-desktop-i386.iso,hdc:cdrom,r'' # ] root = ''/dev/nfs'' nfs_server = ''chucknorris.i2cat.net'' nfs_root = ''/mnt/virtuals/natty'' boot=''dc'' sdl=0 # # VNC Config # vfb = [ ''type=vnc,vncdisplay=96,vncpasswd=ubuntu'' ] serial=''pty'' usbdevice=''tablet'' localtime = 1 # # Behaviour # on_poweroff = ''destroy'' on_reboot = ''restart'' on_crash = ''restart'' Related to the second question, I''m migrating virtual machines when my nodes of the virtualization cluster are collapsed. Most of the nodes are diskless, so their disk is mounted via NFS connected to a central node. This central node has a partition in LVM for everyone of the diskless nodes. Then, all domUs are executed in these nodes must be started via NFS. But these domUs can be migrated to the central node, so domUs can be started without NFS but the config should be changed... so it is not a great idea... Then, the idea is to start all the domUs via NFS independently of the node where it''s executed. I don''t know if my explanation is clear... I hope somebody can help me! Thanks Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761 604.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Sorry, but I don''t understand what you are trying to explain... Every time a domU is created using "xen-create-image", a partition in LVM of the central node is created. So, I don''t use file images. In order to start this virtual machines in diskless nodes, I use the next lines, and for paravirtualization it works, but mysteriously for hvm not: /root = ''/dev/nfs'' nfs_server = ''chucknorris.i2cat.net'' nfs_root = ''/mnt/virtuals/natty''/ In hvm, when I try to start the domain with: xm create /etc/xen/natty.i2cat.net.cfg -c. The ouptut lines are: /Using config file "/etc/xen/natty.i2cat.net.cfg". Error: Domain ''natty.i2cat.net'' does not exist./ I don''t understand it... any idea?? Thanks -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761643.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Related to the second point, you are right, but this central node is the only which has a disk array, the other nodes are diskless. So, as you said, NFS server is in the central node... -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761656.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
In my experience this error is to do with the networking setup. Simple test is to comment out the vif line and boot up. Also check your logs in /var/log/xen Ian -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of lsm_7 Sent: 02 September 2011 10:17 To: xen-users@lists.xensource.com Subject: [Xen-users] RE: Question about NFS domUs Sorry, but I don''t understand what you are trying to explain... Every time a domU is created using "xen-create-image", a partition in LVM of the central node is created. So, I don''t use file images. In order to start this virtual machines in diskless nodes, I use the next lines, and for paravirtualization it works, but mysteriously for hvm not: /root = ''/dev/nfs'' nfs_server = ''chucknorris.i2cat.net'' nfs_root = ''/mnt/virtuals/natty''/ In hvm, when I try to start the domain with: xm create /etc/xen/natty.i2cat.net.cfg -c. The ouptut lines are: /Using config file "/etc/xen/natty.i2cat.net.cfg". Error: Domain ''natty.i2cat.net'' does not exist./ I don''t understand it... any idea?? Thanks -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761 643.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
It happens the same... doesn''t change. I really need help with this topic. Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761980.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Did you check the logs? If it is a HVM guest then I don''t think you would have the root file system defined as this is on the para guest configs. Sorry ive not done HVM guests with NFS roots before, I just use file based when using NFS and it works fine Ian -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of lsm_7 Sent: 02 September 2011 12:18 To: xen-users@lists.xensource.com Subject: [Xen-users] RE: Question about NFS domUs It happens the same... doesn''t change. I really need help with this topic. Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4761 980.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Don''t worry, I''ll work on that. If I get something I''ll comment here!! Thanks anyway!!! Luismi -- View this message in context: http://xen.1045712.n5.nabble.com/Question-about-NFS-domUs-tp4757870p4762072.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users