| --- | Log | opened Wed Jun 14 00:00:42 2006 |
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| 01:17 | <tomaso> | hi, what else is needed on a motherboard to support VT (except chipset)? |
| 01:18 | <tomaso> | I see supported mbs at http://wiki.xensource.com/xenwiki/IntelVT but don't know if I can buy other mb than listed but with listed chipset |
| 01:31 | <lilo2> | VT? |
| 01:31 | <lilo2> | ah |
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| 02:10 | <horms> | is anyone around who i could ask about how cr3 is stored? I know its in the vcpu.arch structure, but i'm confused about guest_table vs monitor_table vs shadow_table |
| 02:22 | <lilo2> | is the Virtual PCI backend as insecure as the Passthrough backend? |
| 02:23 | <lilo2> | (in 3.0.2) |
| 02:23 | [~] | lilo2 is hoping not but can't clearly recall what he heard on the matter |
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| 09:03 | <fabien> | Hello |
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| 09:08 | <fabien> | Does anyone have tried to modify some drivers or source code in general ? |
| 09:20 | <aliguori-uni> | i don't understand your question |
| 09:22 | <fabien> | in fact, I need to modify netback.c (backend driver for NIC) |
| 09:23 | <aliguori-uni> | why? |
| 09:23 | <fabien> | ANd I have serious trouble using xenbus functionnality (like starting a transaction or writing something) |
| 09:23 | <fabien> | (for a project) |
| 09:24 | <fabien> | each call to a xenbus function make my machine reboot, and that not very good ^^ |
| 09:24 | <aliguori-uni> | well, you're doing something wrong |
| 09:24 | <aliguori-uni> | b/c xenbus does work :-) |
| 09:24 | <aliguori-uni> | you'll have to be more specific about what you're doing |
| 09:24 | <fabien> | can I show you 1 or 2 lines of code ? |
| 09:25 | <fabien> | (I work with xen-3.0-testing) |
| 09:26 | <fabien> | In fact, I want to store in xenstore database, number of packets and bytes send and receive by a specific domain |
| 09:27 | <aliguori-uni> | yeah |
| 09:27 | <fabien> | so i have include <xen/xenbus.h> to have the xenbus API |
| 09:28 | <fabien> | and I make transactions after each packet emission or reception |
| 09:28 | <aliguori-uni> | why? |
| 09:28 | <aliguori-uni> | that's a really bad idea |
| 09:28 | <aliguori-uni> | transactions are expensive |
| 09:28 | <aliguori-uni> | starting one after every packet emission/reception is goign to bring the system to it's knees |
| 09:29 | <fabien> | I have the same problem without transaction |
| 09:29 | <aliguori-uni> | you only need to use a transaction if you absolutely need atomicity in a series of writes/reads |
| 09:29 | <aliguori-uni> | what function are you using to write to the store? |
| 09:29 | <fabien> | xenbus_printf |
| 09:29 | <aliguori-uni> | that's a pretty high amount of store traffic too btw. |
| 09:29 | <aliguori-uni> | what arguments are you passing to it? |
| 09:30 | <aliguori-uni> | xenbus is not meant to be high bandwidth |
| 09:30 | <aliguori-uni> | why aren't you just looking in /sys/class/net/vif<domid>.<vifid>/statistics/? |
| 09:30 | <fabien> | with a transaction: xenbus_printf(xbf,"/monitoring/...","tx_packets","xxx") |
| 09:31 | <aliguori-uni> | is there a /monitoring/ direcotry? |
| 09:31 | <aliguori-uni> | you're specifying a top-level path there |
| 09:31 | <fabien> | must I create all directory or it is automatic ? |
| 09:31 | <aliguori-uni> | but i think you want to just write something in dom0 userspace that looks at /sys/class/net/vif<domid>.<vifid>/statistics/[tr]x_packets |
| 09:31 | <fabien> | (sorry for the english, i'm frogg) |
| 09:32 | <aliguori-uni> | you must create directories |
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| 09:33 | <fabien> | I try your correction, 30sec |
| 09:36 | <aliguori-uni> | that's a sysfs path |
| 09:36 | <aliguori-uni> | not a xenbus path |
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| 09:36 | <fabien> | yes, I've seen |
| 09:36 | <aliguori-uni> | the kernel already keeps track of what you're trying to track |
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| 10:03 | <chax> | hi |
| 10:04 | <chax> | i was trying to set up stuff for bringing up a guest os on my m/c |
| 10:04 | <chax> | i modified the conf file .. properly |
| 10:04 | <chax> | yet |
| 10:04 | <chax> | when i do a 'xm create -c <conf_file>' |
| 10:05 | <chax> | i get 'Error: Error creating domain: (2, No such file or directory)' |
| 10:05 | <chax> | wth is that ? |
| 10:06 | <fabien> | reboot |
| 10:06 | <chax> | eh ? |
| 10:06 | <fabien> | oups, miss terminal |
| 10:06 | <fabien> | wring terminal |
| 10:06 | <fabien> | wrOng |
| 10:06 | <chax> | k |
| 10:06 | <chax> | so i need not reboot rt ? |
| 10:06 | <fabien> | you're conf file is in the right directory (/etc/xen for me) ? |
| 10:07 | <chax> | yeah |
| 10:07 | <fabien> | well, I can't help you more |
| 10:07 | <chax> | thats what i copied and modified to be in accordance with the changes i did in the ramdisk image |
| 10:07 | <chax> | k |
| 10:08 | <fabien> | try with the full path (xm create -f /etc/xen/...) |
| 10:08 | <chax> | hmm ok |
| 10:08 | [~] | chax goes to his other machine |
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| 10:15 | <chax> | xend must be running to bring up the guest os rt ? |
| 10:15 | <chax> | xend is the VMM rt ? |
| 10:15 | <fabien> | rt ? |
| 10:15 | <chax> | right ? |
| 10:15 | <chax> | sorry for the shortcut |
| 10:16 | <fabien> | I have learn a new english shortcut ^^ |
| 10:16 | <chax> | :) |
| 10:16 | <fabien> | yes, it must be running |
| 10:16 | <chax> | how come when i start it ... it says stared |
| 10:16 | <chax> | and when i do a ps -el | grep xend |
| 10:16 | <chax> | it doesn't show up |
| 10:17 | <fabien> | do u have boot the right kernel ? |
| 10:17 | <chax> | uname -a |
| 10:17 | <fabien> | xend is not started at bootime by default, you must start it manually |
| 10:18 | <fabien> | (oups) |
| 10:18 | <chax> | i started it manually |
| 10:18 | <fabien> | ok |
| 10:18 | <chax> | uname -a shows '2.6.13-15-xen' |
| 10:18 | <fabien> | k |
| 10:19 | <fabien> | well, look at your log file, i can't help you more |
| 10:19 | <chax> | hmm |
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| 10:22 | <fabien> | good luck for your pb |
| 10:23 | <fabien> | + |
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| 12:00 | <Marco> | hi |
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| 18:21 | <ivan> | how do i copy a hg repo without copying all the metadata? |
| 18:21 | <ivan> | blist |
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| 22:36 | |-| | plars [~plars@70.253.210.52] has quit [Remote host closed the connection] |
| 22:59 | |-| | VS_ChanLog [~stats@ns.theshore.net] has left #xen [Rotating Logs] |
| 22:59 | |-| | VS_ChanLog [~stats@ns.theshore.net] has joined #xen |
| 23:38 | |-| | netman1 [~netman1@82.72.117.88] has quit [Ping timeout: 480 seconds] |
| 23:42 | |-| | Basic_py [~Basic@warden.real-time.com] has joined #xen |
| --- | Log | closed Thu Jun 15 00:00:23 2006 |
