Hello, I have Ubuntu installed as a domU on the debian dom0, and connect via VNC in dom0. This is great for doing installs, and seeing the console output. However the VNC session doesn''t seem to keep the active connection during a domU reboot. Has anyone got this working? If so, how? -- John _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
David Young
2008-Sep-04 04:12 UTC
[Xen-users] Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER.
Hi folks, We have several CentOS 5.2 Xen Dom0s which have recently started misbehaving... xenconsoled mysteriously dies, and when I restart it, I see a bunch of these errors on the console of the DomU: Sample: Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER. Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER. Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER. BUG: soft lockup - CPU#0 stuck for 209s! [swapper:0] Pid: 0, comm: swapper EIP: 0061:[<c0401227>] CPU: 0 EIP is at 0xc0401227 EFLAGS: 00000246 Not tainted (2.6.18-92.1.10.el5xen #1) EAX: 00030001 EBX: 00000000 ECX: 00000000 EDX: f5416000 ESI: 00000220 EDI: c0772f22 EBP: 00000042 DS: 007b ES: 007b CR0: 8005003b CR2: 08d6a7dc CR3: 00895000 CR4: 00000660 [<c054940c>] force_evtchn_callback+0xa/0xc [<c0421f70>] vprintk+0x2b1/0x2bb [<ee183cb1>] __ip_ct_refresh_acct+0xf6/0x129 [ip_conntrack] [<c06094b8>] _spin_lock_irqsave+0x8/0x28 My first thought is that it''s a recent Xen / kernel-xen update, since this is fairly recent behaviour. Any ideas? ---------- My setup: Kernel: Linux 2.6.18-92.1.10.el5xen xm info: #1 SMP Tue Aug 5 08:46:32 EDT 2008 i686 i686 i386 GNU/Linux release : 2.6.18-92.1.10.el5xen version : #1 SMP Tue Aug 5 08:46:32 EDT 2008 machine : i686 nr_cpus : 2 nr_nodes : 1 sockets_per_node : 2 cores_per_socket : 1 threads_per_core : 1 cpu_mhz : 930 hw_caps : 0383fbff:00000000:00000000:00000040 total_memory : 3071 free_memory : 0 node_to_cpu : node0:0-1 xen_major : 3 xen_minor : 1 xen_extra : .2-92.1.10.el5 xen_caps : xen-3.0-x86_32p xen_pagesize : 4096 platform_params : virt_start=0xf5800000 xen_changeset : unavailable cc_compiler : gcc version 4.1.2 20071124 (Red Hat 4.1.2-42) cc_compile_by : mockbuild cc_compile_domain : centos.org cc_compile_date : Tue Aug 5 07:34:25 EDT 2008 xend_config_format : 2 And RPM version: # rpm -q xen xen-3.0.3-64.el5_2.1 David Young systems engineer prophecy networks industrial strength network & security solutions email skype office mobile david@prophecy.net.nz davidyoungnz +64 (6) 824-3904 +64 (21) 966-716 On 4/09/2008, at 10:48 AM, John Hannfield wrote:> Hello, > I have Ubuntu installed as a domU on the debian dom0, and connect > via VNC > in dom0. This is great for doing installs, and seeing the console > output. However > the VNC session doesn''t seem to keep the active connection during a > domU reboot. > Has anyone got this working? > If so, how? > > -- > > John > > _______________________________________________ > 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
Jerry Amundson
2008-Sep-04 04:39 UTC
Re: [Xen-users] Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER.
On Wed, Sep 3, 2008 at 11:12 PM, David Young <david@prophecy.net.nz> wrote:> Hi folks, > We have several CentOS 5.2 Xen Dom0s which have recently started > My first thought is that it''s a recent Xen / kernel-xen update, since this > is fairly recent behaviour. Any ideas? > Linux 2.6.18-92.1.10.el5xenTry rebooting into 2.6.18-92.1.6.el5xen Any change?> On 4/09/2008, at 10:48 AM, John Hannfield wrote: > > Hello, > I have Ubuntu installed as a domU on the debian dom0, and connect via VNCPlease don''t hijack threads. It''s messy, and unsociable... :-) jerry -- There''s plenty of youth in America - it''s time we find the "fountain of smart". _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
David Young
2008-Sep-04 04:52 UTC
Re: [Xen-users] Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER.
Oops, sorry about the hijack, I needed the list email address, and forgot about the rest..> Try rebooting into 2.6.18-92.1.6.el5xen > Any change?On the Dom0, DomU, or both? Thanks, D _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Jerry Amundson
2008-Sep-04 06:36 UTC
Re: [Xen-users] Attempt to allocate order 5 skbuff. Increase MAX_SKBUFF_ORDER.
On Wed, Sep 3, 2008 at 11:52 PM, David Young <david@prophecy.net.nz> wrote:> On the Dom0, DomU, or both?Yes. Maybe. Possibly. :) jerry -- There''s plenty of youth in America - it''s time we find the "fountain of smart". _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I believe the vnc serving process is terminated when the domain is terminated. When the domain is recreated (shortly thereafter when restarting), a new vnc serving process is started. Assuming you are setting the port, it will be the same, but you have to reconnect. Some vnc clients will try to automatically reconnect on a lost connection when configured to do so. This could work depending on how long there is no vnc serving process for the appropriate port and/or how quickly (or how many times) the vnc client tries to reconnect. I have had this work from time to time with a RealVNC client, but not consistently. I think the serving process usually sends a disconnect server, so the client assumes it was a clean disconnect instead of a lost connection so really a setting to reconnect on disconnect instead of just on a lost connection would be necessary). Dustin -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of John Hannfield Sent: Wednesday, September 03, 2008 18:49 To: xen-users@lists.xensource.com Subject: [Xen-users] Maintain VNC session across reboots? Hello, I have Ubuntu installed as a domU on the debian dom0, and connect via VNC in dom0. This is great for doing installs, and seeing the console output. However the VNC session doesn''t seem to keep the active connection during a domU reboot. Has anyone got this working? If so, how? -- John _______________________________________________ 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