Update:
Completely stable with 7 VMs. Hasn't missed a beat for several days now.
Will now run the pings again in 2 of 64PV from the virtual consoles (no
graphics - and disconnected) and see if the host clock tick dies again.
Cheers
V
On Thu, 24 Jun 2010 03:17:51 pm Virgil wrote:
Quick update:
Added 3 more VMs. Total of 7 now on this "desktop" computer.
3x32PCFC6
1x32HVFC12
1x32HVwinXP-pro
2x64PVFC12
Host is maxed out now.
Everything going well when the pings are not running in the 64PVFC12
machines.
Will leave it going for another couple of days.
Cheers
V
p.s. FYI Samba4-Alpha12 Active Directory controller is working well on
64PVFC12.
On Wed, 23 Jun 2010 05:18:56 pm Virgil wrote:
> On Wed, 23 Jun 2010 03:30:52 pm Pasi Kärkkäinen wrote:
> > On Wed, Jun 23, 2010 at 11:11:58AM +1000, Virgil wrote:
> > > Hi Pasi,
> > >
> > > Had a hiccup overnite:
> > >
> > > The host became unresponsive in a weird way. The time stopped
> > > incrementing.
> > >
> > > Turns out the clock stopped ticking (which I put down to the
> > > interrupts being disconnected).
> > >
> > > Anyway I decided I'd reset the time using 'time -s 10:41:30'.
> > >
> > > Kaboom, or actually deathly silence. The machine fully stopped dead
> > > in its tracks.
> > >
> > > Just prior to this I connected to the console of one of the 64PV
> > > machines which was just running a ping from yesterday. Anyway, 60,000
> > > or so lines of pings went to the console zipping up the screen. Then
> > > it was dead. I did a CTRL-C and eventually it returned to the prompt.
> > >
> > > So I looked at the other 64PV machine, which was also pining, and
> > > identical situation.
> > >
> > > So I reckon, there's some kind of buffer overflow going on when
> > > you're not "xm console MACHINE" connected. Once you pass
60,000
> > > lines of text this buffer overflow causes the RTC to hangup somehow.
> >
> > Do you have xenconsoled running?
> >
> > I've noticed PV guests that print a lot to the console will stall if
> > xenconsoled is not running.. xenconsoled needs to clear the guest
> > console buffer..
> >
> > -- Pasi
>
> Seems to be now. Pretty sure it was then too.
>
> udev-post 0:off 1:on 2:on 3:on 4:on 5:on 6:off
> wpa_supplicant 0:off 1:off 2:off 3:off 4:off 5:off 6:off
> xenconsoled 0:off 1:off 2:off 3:on 4:on 5:on 6:off
> xend 0:off 1:off 2:off 3:on 4:on 5:on 6:off
> xendomains 0:off 1:off 2:off 3:on 4:on 5:on 6:off
> xenstored 0:off 1:off 2:off 3:on 4:on 5:on 6:off
> ypbind 0:off 1:off 2:off 3:off 4:off 5:off 6:off
> [root@seanl64 ~]# ps -ef | grep xenconso
> root 1508 1 0 10:19 ? 00:00:00 /usr/sbin/xenconsoled
> --log=none --log-dir=/var/log/xen/console root 7815 7732 0 17:07
> pts/5 00:00:00 grep xenconso
>
> Cheers
> V
>
> > > I pressed the reset button, but this time the 2 64PV machines are not
> > > logged in. I'll just let it go and see if it keeps going.
> > >
> > > Cheers
> > > V
> > >
> > > On Tue, 22 Jun 2010 04:29:06 pm Pasi Kärkkäinen wrote:
> > > > On Tue, Jun 22, 2010 at 12:03:53PM +1000, Virgil wrote:
> > > > > Hi Pasi,
> > > > >
> > > > > On Mon, 21 Jun 2010 08:57:55 pm Pasi Kärkkäinen wrote:
> > > > > > On Mon, Jun 21, 2010 at 01:56:36PM +0300, Pasi Kärkkäinen
wrote:
> > > > > > > On Mon, Jun 21, 2010 at 02:28:15PM +1000, Virgil
wrote:
> > > > > > > > Another quick update....
> > > > > > > >
> > > > > > > > xen-4.0.1-0.1.rc3.fc13.src.rpm just compiled this
under
> > > > > > > > fc12.
> > > > > > > >
> > > > > > > > Identical results with this too (i.e. it's
probably in the
> > > > > > > > kernel).
> > > > > > > >
> > > > > > > > I have a (silly) idea for the serial console. The
wiki page
> > > > > > > > recommends using a phone camera to capture the
screen....
> > > > > > > >
> > > > > > > > Well my idea is to add an n-millisecond delay
every time
> > > > > > > > the output stream in Xen sees a \n. This would
delay the
> > > > > > > > screen updates enough for the camera to see them.
The n
> > > > > > > > should be configurable on the kernel boot command
line.
> > > > > > > > It's set to 0 right now.
> > > > > > >
> > > > > > > Yeah, we really need to get a log somehow to
troubleshoot
> > > > > > > your problem.
> > > > > > >
> > > > > > > Serial console log would be the best:
> > > > > > >
http://wiki.xensource.com/xenwiki/XenSerialConsole
> > > > > >
> > > > > > Btw are you running the latest kernel:
> > > > > >
http://koji.fedoraproject.org/koji/taskinfo?taskID=2254110
> > > > > >
> > > > > > Or are you running custom/self compiled kernel?
> > > > >
> > > > > Everything is working with:
> > > > > xen-4.0.1-0.1.rc3 compiled from source on fc12 machine and
> > > > > 2.6.32.14-1.2.107.xendom0.fc12.x86_64 from the myoung repo.
> > > > >
> > > > > All fixed.
> > > >
> > > > Good to hear it works!
> > > >
> > > > > We also now have a "null modem" cable to another old
computer
> > > > > with a COM port. Turns out I was the only old man that could
> > > > > remember what a null modem cable is. The young guy said
"wtf"?
> > > > > Also turns out I'm the only one who knows what minicom is
and
> > > > > what 8N1 means
> > > > >
> > > > > :-)
> > > >
> > > > Hehe.. yeah I guess young people don't get to play with serial
> > > > consoles nowadays, until they're doing networking stuff..
> > > >
> > > > So I guess most SOL devices in servers go unused.. :)
> > > >
> > > > -- Pasi
> > > >
> > > > > All VMs are now running concurrently.
> > > > >
> > > > > Very happy again. Thanks.
> > > > > V
> > > > >
> > > > > > -- Pasi
> > > > > >
> > > > > > > > Cheers
> > > > > > > > V
> > > > > > > >
> > > > > > > > On Mon, 21 Jun 2010 12:10:17 pm Virgil wrote:
> > > > > > > > > Just a quick update:
> > > > > > > > >
> > > > > > > > > Just tried xen-4.0.0-2. Recompile from
source on
> > > > > > > > > fc12.x86_64.
> > > > > > > > >
> > > > > > > > > identical behaviour.
> > > > > > > > >
> > > > > > > > > Cheers
> > > > > > > > > V
> > > > > > > > >
> > > > > > > > > On Fri, 18 Jun 2010 03:17:19 pm Virgil
wrote:
> > > > > > > > > > On Sat, 29 May 2010 11:26:50 pm M A
Young wrote:
> > > > > > > > > > > If anyone wants to test xen 3.4.3,
I have put up a
> > > > > > > > > > > source RPM at
> > > > > > > > > > >
http://myoung.fedorapeople.org/dom0/src/xen-3.4.3-0.9
> > > > > > > > > > > 1. fc 13. src.r pm
> > > > > > > > > > >
> > > > > > > > > > > Michael Young
> > > > > > > > > > >
> > > > > > > > > > > --
> > > > > > > > > > > xen mailing list
> > > > > > > > > > > xen(a)lists.fedoraproject.org
> > > > > > > > > > >
https://admin.fedoraproject.org/mailman/listinfo/xen
> > > > > > > > > >
> > > > > > > > > > Hi list,
> > > > > > > > > >
> > > > > > > > > > Host crashing on 64FC12 kernel -105
dom0 when 2 PV64
> > > > > > > > > > machines are run.
> > > > > > > > > >
> > > > > > > > > > I can run HV32WinXP and HV32FC12 and 1
PV64FC12 all at
> > > > > > > > > > the same time.
> > > > > > > > > >
> > > > > > > > > > However, when any combination involves
2 PV64FC12
> > > > > > > > > > (kernel version doesn't matter) the
host crashes.
> > > > > > > > > >
> > > > > > > > > > Running on the -97 dom0 everything
works in all combos.
> > > > > > > > > >
> > > > > > > > > > Using Xen 3.4.3.
> > > > > > > > > >
> > > > > > > > > > Turning off the virt network cards in
the PV64FC12
> > > > > > > > > > machines makes things go (obviously not
much use
> > > > > > > > > > though).
> > > > > > > > > >
> > > > > > > > > > Tried disabling IPV6, firewall stuff
etc. etc.
> > > > > > > > > >
> > > > > > > > > > Sometimes it would fire up and go but
whichever machine
> > > > > > > > > > is started second gets really long ping
times like it's
> > > > > > > > > > not receiving unless it sends something
(if that makes
> > > > > > > > > > sense). Sooner or later the host
crashes.
> > > > > > > > > >
> > > > > > > > > > Strangely a PV64FC12 and a PV64FC10
machine coexist
> > > > > > > > > > happily. It's only when a second
PV64FC12 machine
> > > > > > > > > > starts up.
> > > > > > > > > >
> > > > > > > > > > V
> > > > > > > > > > --
> > > > > > > > > > xen mailing list
> > > > > > > > > > xen(a)lists.fedoraproject.org
> > > > > > > > > >
https://admin.fedoraproject.org/mailman/listinfo/xen
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > > xen mailing list
> > > > > > > > > xen(a)lists.fedoraproject.org
> > > > > > > > >
https://admin.fedoraproject.org/mailman/listinfo/xen
> > > > > > > >
> > > > > > > > --
> > > > > > > > xen mailing list
> > > > > > > > xen(a)lists.fedoraproject.org
> > > > > > > >
https://admin.fedoraproject.org/mailman/listinfo/xen
> > > > > > >
> > > > > > > --
> > > > > > > xen mailing list
> > > > > > > xen(a)lists.fedoraproject.org
> > > > > > >
https://admin.fedoraproject.org/mailman/listinfo/xen
>
> --
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>
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