Hi people, I have several Xen Dom0''s working. Those that have PV domU''s work awesomely and without any problems. The ones that have HVM domU''s fail once every two weeks (more or less). Here''s the setup: Dell PowerEdge 1950 III Ubuntu 8.04.1 (64bits) with Xen 3.3.0 compiled over the linux-image- xen from Ubuntu. HVM domU''s are Windows 2003 Server Enterprise I''ve set the clocksource to "jiffies" to avoid high load fails (this reduced the failing A LOT). All disks are accessed via iscsi. As said every now and then Dom0 hangs completely. No net access whatsoever... all gone. I have to manually stop the machine and restart it. My domU config file is super simple... here''s an example: ### Config ### kernel = "/usr/lib/xen/boot/hvmloader" builder=''hvm'' memory=1024 name=''domu'' shadow_memory=8 vcpus=8 vif = [ '''' ] disk = [ ''phy:/dev/disk/by-path/ip-xxx.xxx.xxx.xxx:3260-iscsi-iqn. 2008-08.xx.xx:domu-lun-0,hda,w'' ] on_poweroff = ''destroy'' on_reboot = ''restart'' on_crash = ''restart'' device_model = ''/usr/lib/xen/bin/qemu-dm'' sdl=0 vnc=1 vncviewer=0 stdvga=0 serial=''pty'' usbdevice=''tablet'' ### Config ### I''m asking you people for help desperately. I''ve been dealing with this for months now. Any help will be highly appreciated. Please, please, please!! :) Thanks a lot, Aleix. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Ken! thanks for answering so fast. My Dom0 uses all CPUs available (8 in this case, due to a bug that doesn''t allow VMs to shutdown, reboot... if I set this to 1) so it''s hard for me to separate DomU from Dom0 in CPU usage, although it''s a good idea. Thanks, Aleix. El 25/03/2009, a las 16:16, Ken Cobler escribió:> Aleix Dorca wrote: >> Hi people, >> >> I have several Xen Dom0''s working. Those that have PV domU''s work >> awesomely and without any problems. The ones that have HVM domU''s >> fail once every two weeks (more or less). Here''s the setup: >> >> Dell PowerEdge 1950 III >> Ubuntu 8.04.1 (64bits) with Xen 3.3.0 compiled over the linux-image- >> xen from Ubuntu. >> HVM domU''s are Windows 2003 Server Enterprise >> I''ve set the clocksource to "jiffies" to avoid high load fails >> (this reduced the failing A LOT). >> All disks are accessed via iscsi. >> >> As said every now and then Dom0 hangs completely. No net access >> whatsoever... all gone. I have to manually stop the machine and >> restart it. >> >> > I have Suse 10.0 (Xen 3.1) running with Windows 2003 and Windows XP > VMs. Both Windows 2003 and Windows XP are running from boot. > > I have found that I pin a VM to a vCPU. In HVM, all disk access (if > not using GPLV driver) uses dom0 to complete the request. By making > certain that dom0 has 1 vCPU to itself always, limits the chance of > getting into an I/O bottleneck. > > By default, all domU''s and dom0 are allowed to run on any vCPU > available. > Ken Cobler >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Any serial port output? --jyh>-----Original Message----- >From: xen-users-bounces@lists.xensource.com >[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Aleix Dorca >Sent: 2009年3月25日 22:50 >To: xen-users@lists.xensource.com >Subject: [Xen-users] HVM failing. Tips please? > >Hi people, > >I have several Xen Dom0's working. Those that have PV domU's work >awesomely and without any problems. The ones that have HVM >domU's fail >once every two weeks (more or less). Here's the setup: > >Dell PowerEdge 1950 III >Ubuntu 8.04.1 (64bits) with Xen 3.3.0 compiled over the linux-image- >xen from Ubuntu. >HVM domU's are Windows 2003 Server Enterprise >I've set the clocksource to "jiffies" to avoid high load fails (this >reduced the failing A LOT). >All disks are accessed via iscsi. > >As said every now and then Dom0 hangs completely. No net access >whatsoever... all gone. I have to manually stop the machine and >restart it. > >My domU config file is super simple... here's an example: > >### Config ### >kernel = "/usr/lib/xen/boot/hvmloader" >builder='hvm' >memory=1024 >name='domu' >shadow_memory=8 >vcpus=8 >vif = [ '' ] >disk = [ >'phy:/dev/disk/by-path/ip-xxx.xxx.xxx.xxx:3260-iscsi-iqn. >2008-08.xx.xx:domu-lun-0,hda,w' ] >on_poweroff = 'destroy' >on_reboot = 'restart' >on_crash = 'restart' >device_model = '/usr/lib/xen/bin/qemu-dm' >sdl=0 >vnc=1 >vncviewer=0 >stdvga=0 >serial='pty' >usbdevice='tablet' >### Config ### > >I'm asking you people for help desperately. I've been dealing with >this for months now. Any help will be highly appreciated. Please, >please, please!! :) > >Thanks a lot, > >Aleix. > >_______________________________________________ >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
No, I don''t use serial ports at all... why ? Aleix. El 26/03/2009, a las 7:33, Jiang, Yunhong escribió:> Any serial port output? > > --jyh > >> -----Original Message----- >> From: xen-users-bounces@lists.xensource.com >> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Aleix >> Dorca >> Sent: 2009年3月25日 22:50 >> To: xen-users@lists.xensource.com >> Subject: [Xen-users] HVM failing. Tips please? >> >> Hi people, >> >> I have several Xen Dom0''s working. Those that have PV domU''s work >> awesomely and without any problems. The ones that have HVM >> domU''s fail >> once every two weeks (more or less). Here''s the setup: >> >> Dell PowerEdge 1950 III >> Ubuntu 8.04.1 (64bits) with Xen 3.3.0 compiled over the linux-image- >> xen from Ubuntu. >> HVM domU''s are Windows 2003 Server Enterprise >> I''ve set the clocksource to "jiffies" to avoid high load fails (this >> reduced the failing A LOT). >> All disks are accessed via iscsi. >> >> As said every now and then Dom0 hangs completely. No net access >> whatsoever... all gone. I have to manually stop the machine and >> restart it. >> >> My domU config file is super simple... here''s an example: >> >> ### Config ### >> kernel = "/usr/lib/xen/boot/hvmloader" >> builder=''hvm'' >> memory=1024 >> name=''domu'' >> shadow_memory=8 >> vcpus=8 >> vif = [ '''' ] >> disk = [ >> ''phy:/dev/disk/by-path/ip-xxx.xxx.xxx.xxx:3260-iscsi-iqn. >> 2008-08.xx.xx:domu-lun-0,hda,w'' ] >> on_poweroff = ''destroy'' >> on_reboot = ''restart'' >> on_crash = ''restart'' >> device_model = ''/usr/lib/xen/bin/qemu-dm'' >> sdl=0 >> vnc=1 >> vncviewer=0 >> stdvga=0 >> serial=''pty'' >> usbdevice=''tablet'' >> ### Config ### >> >> I''m asking you people for help desperately. I''ve been dealing with >> this for months now. Any help will be highly appreciated. Please, >> please, please!! :) >> >> Thanks a lot, >> >> Aleix. >> >> _______________________________________________ >> 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
If dom0 hang totally, maybe some bug is hit and the serial port may give some hints. --jyh>-----Original Message----- >From: Aleix Dorca [mailto:adorca@uda.ad] >Sent: 2009年3月26日 14:57 >To: Jiang, Yunhong >Cc: xen-users@lists.xensource.com >Subject: Re: [Xen-users] HVM failing. Tips please? > >No, I don't use serial ports at all... why ? > >Aleix. > >El 26/03/2009, a las 7:33, Jiang, Yunhong escribió: > >> Any serial port output? >> >> --jyh >> >>> -----Original Message----- >>> From: xen-users-bounces@lists.xensource.com >>> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Aleix >>> Dorca >>> Sent: 2009年3月25日 22:50 >>> To: xen-users@lists.xensource.com >>> Subject: [Xen-users] HVM failing. Tips please? >>> >>> Hi people, >>> >>> I have several Xen Dom0's working. Those that have PV domU's work >>> awesomely and without any problems. The ones that have HVM >>> domU's fail >>> once every two weeks (more or less). Here's the setup: >>> >>> Dell PowerEdge 1950 III >>> Ubuntu 8.04.1 (64bits) with Xen 3.3.0 compiled over the linux-image- >>> xen from Ubuntu. >>> HVM domU's are Windows 2003 Server Enterprise >>> I've set the clocksource to "jiffies" to avoid high load fails (this >>> reduced the failing A LOT). >>> All disks are accessed via iscsi. >>> >>> As said every now and then Dom0 hangs completely. No net access >>> whatsoever... all gone. I have to manually stop the machine and >>> restart it. >>> >>> My domU config file is super simple... here's an example: >>> >>> ### Config ### >>> kernel = "/usr/lib/xen/boot/hvmloader" >>> builder='hvm' >>> memory=1024 >>> name='domu' >>> shadow_memory=8 >>> vcpus=8 >>> vif = [ '' ] >>> disk = [ >>> 'phy:/dev/disk/by-path/ip-xxx.xxx.xxx.xxx:3260-iscsi-iqn. >>> 2008-08.xx.xx:domu-lun-0,hda,w' ] >>> on_poweroff = 'destroy' >>> on_reboot = 'restart' >>> on_crash = 'restart' >>> device_model = '/usr/lib/xen/bin/qemu-dm' >>> sdl=0 >>> vnc=1 >>> vncviewer=0 >>> stdvga=0 >>> serial='pty' >>> usbdevice='tablet' >>> ### Config ### >>> >>> I'm asking you people for help desperately. I've been dealing with >>> this for months now. Any help will be highly appreciated. Please, >>> please, please!! :) >>> >>> Thanks a lot, >>> >>> Aleix. >>> >>> _______________________________________________ >>> 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