| --- | Log | opened Mon Mar 19 00:00:49 2007 |
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| 01:58 | <rainabba> | I've installed xen 3.0 (all related packages) and found that it added initrd to /boot, modified and |
| 01:58 | <rainabba> | modified my menu.lst file. I rebooted to the xen kernel and all looked to be going well until a few |
| 01:58 | <rainabba> | seconds after I saw the xen control daemon load. The screen blinked like X was about to come up then |
| 01:58 | <rainabba> | the system froze completely. I miss something? |
| 02:01 | <rainabba> | Sorry for the lines, pasted badly. I was refering to Debian. |
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| 07:30 | <dopez> | hello |
| 07:31 | <dopez> | i'm just doing a netbsd domU install on my linux box (opensuse) and noticed there is a line missing from the config file to succesfully do the install, should i just edit the wiki myself or send a notice to the person who created the page ? |
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| 08:01 | <paelzer> | dopez: It's a wiki to be changeable so I guess that it is ok if you change it. Usually the owner will get a change notification from the wiki anyway |
| 08:01 | <dopez> | paelzer: oh okay, then i'll change it indeed |
| 08:09 | <dopez> | is any work still being done on xen domU support for FreeBSD ? the instructions and files all seem to be quite dated by now |
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| 12:05 | <icblenke> | I still have qemu-dm daemon processes dying randomly, and nothing in my logs to figure out why. It appears to be load based. This with Xen 3.0.4 and a 2.6.16.33 vanilla kernel. |
| 12:05 | <icblenke> | Any suggestions as to how to turn up debugging would be greatly appreciated. |
| 12:07 | <danp1> | icblenke: best bet is probably to use ulimit to turn on core dumps before starting XenD |
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| 12:08 | <danp1> | that ought to ensure that the qemu-dm processes started by XenD dump core when they crash |
| 12:08 | <danp1> | alternatively, if you can reliably reproduce it (which it doesn't sound like) you could attach to a running instance with GDB and wait for it to do its deathmarch |
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| 12:08 | <danp1> | and thus enable you to find a stack trace for the issue |
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| 12:10 | <icblenke> | aligouri suggested last week that gdbing qemu-dm was ill advised. |
| 12:10 | <icblenke> | something to do with it causing the hypervisor grief. |
| 12:11 | <danp1> | icblenke: yeah, that wouldn't surprise me |
| 12:11 | <danp1> | certainly i you start to manually start qemu-dm from scratch under GDB it fails |
| 12:15 | <icblenke> | I'll give the core dump ulimit fix a try, anyway. |
| 12:15 | <icblenke> | a core dump is better than nothing at all. |
| 12:16 | <danp1> | icblenke: one other possibility is to set sysctl kernel.print-fatal-signals=1 |
| 12:17 | <danp1> | although that's not as useful as a full userspace stack trace |
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| 12:29 | <icblenke> | kernel.print-fatal-signals is an unknown key (no /proc/sys/kernel/print-fatal-signals) |
| 12:31 | <icblenke> | looks like it's an Ingo Molnar patch... probably isn't in the vanilla 2.6.16.33 |
| 12:32 | <danp1> | hmm, its been in all RHEL & Fedora kernels since 2.6.9 days at least |
| 12:33 | <icblenke> | definitely not in 2.6.16.33, just grep'ed my source tree. |
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| 12:51 | <icblenke> | ultravnc also kills qemu-dm's libvnc instantaneously. |
| 12:51 | <icblenke> | or appears to, anyway. |
| 13:00 | <danp1> | there's at least one known SEGV fixed in upstream QEMU code that's not in Xen |
| 13:00 | <danp1> | which can hit with any vnc client |
| 13:14 | <aliguori> | probably a bunch more |
| 13:15 | <aliguori> | icblenke: does it segv qemu-dm or does the vnc session terminate? |
| 13:15 | <aliguori> | it's probably the whole setencodings thing |
| 13:16 | <aliguori> | the qemu vnc code needs to be toughened for that |
| 13:16 | <aliguori> | setencodings is my only gripe with the vnc protocol.. |
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| 13:30 | <icblenke> | it segv's qemu-dm |
| 13:36 | <aliguori> | icblenke: other vnc clients don't do that? |
| 13:37 | <aliguori> | there was a chicken of the vnc fix that went into qemu that was related to it's stupidity about dealing with desktop resize notifications. you may want to try playing with ultravnc to have it not use any vnc extensions |
| 13:37 | <aliguori> | specifically, desktopresize |
| 13:43 | <icblenke> | I haven't had a problem with tightvnc causing it yet. |
| 13:44 | <icblenke> | honestly, it doesnt' affect me personally. I was trying to give a user access to the VNC console of their vm. |
| 13:44 | <icblenke> | so, for now, they will not be permitted to do so. |
| 13:44 | <aliguori> | icblenke: what about realvnc? |
| 13:45 | <icblenke> | didn't try that. but I'll wager it works just fine. |
| 13:45 | <icblenke> | ultravnc is a bit of an oddball. |
| 13:46 | <aliguori> | the thing is, i'm pretty sure it works with upstream qemu |
| 13:46 | <aliguori> | i have no way of testing myself since AFAIK ultravnc is for windows only |
| 13:48 | <icblenke> | if the user really needs console access, I'll fire up xrdp-xserver and right tightvnc loopback there on dom0. there are ways to work around this "problem" for now, if absolutely necessary. |
| 13:49 | <aliguori> | adding an rdp server to qemu probably isn't an awful idea |
| 13:49 | <aliguori> | i looked at the protocol recently, it's not too bad |
| 13:49 | <aliguori> | it's not window based as i thought it was |
| 14:02 | <icblenke> | xrdp.sf.net is a wonderful thing. |
| 14:05 | <icblenke> | though some argument could be made for freenx |
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| 14:13 | <icblenke> | trying to build a win2k3 image now with acpi=1/apic=1 |
| 14:25 | <icblenke> | on_reboot='restart' still isn't restarting the HVM win2k3 images when they reboot during install |
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| 15:48 | <swingle> | hi |
| 15:48 | <swingle> | ive got a problem with an hvm linux guest |
| 15:48 | <swingle> | i created a tagged vlan interface and assigned it to a bridge |
| 15:48 | <swingle> | i gave it to the domain and did a ping from inside |
| 15:49 | <swingle> | everything goes fine until it gets to ~50 pings |
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| 15:49 | <swingle> | in that moment it starts sending arps and doesnt receive any aswers |
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| 15:50 | <swingle> | 50*ping_length is aproximately 4096 and when i increase the size of each ping it can send less packets |
| 15:50 | <swingle> | n*length is always around 4096 so i guess theres an overflown buffer somewhere |
| 15:51 | <swingle> | anybodys got a clue? :( |
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| 17:47 | <sander> | Hello, I have a question about printing in Xen 3.0.3. I have a printer connected to my machine with a standard printer cable (no usb). I'd like to set up a domU as a printserver. How do I expose the printer to the domU? Can I simply hide it in dom0 and expose it as a VBD like I do disk partitions? |
| 17:49 | <dopez> | i'm not sure if that is possible in xen 3 (or at all for the moment) you might have luck if you could find a pci card with a parallel port on it though |
| 17:49 | <dopez> | for the moment/for that matter |
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| 17:50 | <sander> | Hmm... too bad. I would imagine that letting domU use /dev/lp0 is quite a common use-case. |
| 17:52 | <sander> | And I don't really feel like setting up a full cups server in dom0 |
| 17:52 | <dopez> | would be quite nice indeed, but for the moment only pci passthrough is possible as far as i know, i remember reading about adding support for usb ports |
| 17:52 | <dopez> | i can imagine |
| 17:52 | <sander> | Well, thanks anyway :-) |
| 17:52 | <dopez> | try getting a lpt to usb converter and pass the usb controller to your domU ? |
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| 17:53 | <sander> | A good idea as well. Especially since I have only 1 PCI slot (and that's for my sound card) |
| 17:57 | <dopez> | though i'm not 100% sure about it not being possible to passthrough a printer port, you might want to ask on the mailing list also (as here it has been quite quiet the last few hours) |
| 17:58 | <sander> | Thanks, I will gove that a try as well |
| 17:58 | <sander> | give* |
| 17:59 | <dopez> | np, veel succes ;) |
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| --- | Log | closed Tue Mar 20 00:00:35 2007 |
