--- Day changed

--- Log opened Mon Feb 12 23:59:01 2007
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12:22 < jeroenh> hello
12:23 < jeroenh> I'm having some problems with UML and its mac adresses
12:23 < jeroenh> I downloaded a uml kernel from somewhere (can't remember where :( ), and that one assigns MAC adresses based on the ip adress
12:24 < jeroenh> but when I compile 2.6.20 myself from source, it picks a random one
12:25 < jeroenh> and the problem is, it's not very random, it really uses the same numbers for the same interfaces on each uml
12:25 < jeroenh> so eth0 has the same everywhere
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12:37 < strontian> you can set the mac address on boot time
12:38 < strontian> it is the third value to the ethN parameter
12:38 < the_hydra> jeff, are you there?
12:39 < the_hydra> are you guys sure 2.6.16-bs2 is bb latest patchset?
12:39 < the_hydra> I remember seeing 2.6.17 something on his website
12:43 < kokoko1> hi the_hydra 
12:45 < the_hydra> yo kokoko1 
12:45 < kokoko1> the_hydra, you are talking about skas patches?
12:46 < the_hydra> no, the blaisor blade patchset
12:46 < the_hydra> a.k.a -bb and -bs
12:47 < the_hydra> blaisor, a.k.a Paolo Gialarusso
12:52 < kokoko1> the_hydra,  http://rootprompt.org/ check this
12:52 < kokoko1> The article about UML is submitted by me :)
12:52 < the_hydra> great!
12:52 < kokoko1> lol I am sharing with you coz its my first submission :)
12:53 < the_hydra> this--> http://rootprompt.org/article.php3?article=10675?
12:53 < the_hydra> np, I welcome any qualified reading
12:53 < kokoko1> How to run Linux inside Linux with User Mode Linux
12:53 < kokoko1> Well this is not mine, just submitted it after reading it on linux.com :S
12:54 < kokoko1> I am not good at writing
12:54 < the_hydra> ok
12:54 < the_hydra> i suggest next time, you should try to make one
12:55 < the_hydra> maybe that would look bad 1st time, but it will also improbe your knowledge..trust me
12:55 < jeroenh> strontian: I know you can set the MAC adress, but I don't want to on every instance
12:55 < jeroenh> I know that other versions automatically set it based on the assigned IP adress
12:56 < jeroenh> so I want to know what broke that feature
12:56 < jeroenh> or how to enable it
12:57 < strontian> ah, ok
12:58 < strontian> don't know about that, I haven't actually even compiled uml with the latest kernels
12:59 < strontian> where do you assign the IPs?
12:59 < jeroenh> in init.d/rcS
12:59 < jeroenh> so after boot
13:00 < strontian> ok, so couldn't you assign MACs at the same time? or write a simple script to do that according the IP
13:00 < jeroenh> I can, but I have a whole set of scripts and I don't want to rebuild them all
13:01 < strontian> yeah, understandable
13:02 < jeroenh> even worse: I have a kernel 2.6.18.3 downloaded from somewhere, without HOSTFS, which works, but I can't build a 2.6.18.3 myself :(
13:03 < strontian> what's the problem with building it yourself?
13:04 < jeroenh> JB_PC' undeclared (first use in this function)
13:04 < jeroenh> and more stuff like that
13:04 < jeroenh> seems I should use the -bb patch
13:05 < strontian> actually, there is another patch that should take care of that issue
13:05 < jeroenh> oh, where is that ?
13:06 < strontian> trying to remember...
13:08 < jeroenh> http://www.user-mode-linux.org/~blaisorblade/patches/guest/uml-2.6.18-bb1/broken-out/uml-JB-registers-hack.patch ?
13:10 < strontian> yeah, that's one possibility
13:11 < strontian> but tthere is another, which uses klibc's setjmp/longjmp
13:11 < strontian> but can't seem to find it online now
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13:13 < strontian> ah, found it:
13:13 < strontian> http://marc.theaimsgroup.com/?l=linux-kernel&m=115405615722913&w=2
13:13 < strontian> I've been using the latter to compile 2.6.18.3 uml kernels, works nicely
13:14 < strontian> or 2.6.18 at least
13:16 < jeroenh> okay, I just got a 2.6.18.3 compiled using the patch I mentioned, but that still has the MAC address issue
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13:23 < strontian> ok, I just browsed through some mail archives and I think I found the patch that does the randomization:
13:23 < strontian> http://marc.theaimsgroup.com/?l=user-mode-linux-devel&m=115937995723988&w=2
13:24 < strontian> so you might want to try reverse that patch to get the functionality you want
13:25 < jeroenh> kinda weird that I have two 2.6.18.3's with different behavior :(
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13:27 < strontian> yeah
13:28 < jeroenh> plus, it doesn't seem that 2.6.18.3 contains that randomization patch
13:28 < strontian> oh, even weirder
13:29 < jeroenh> there Jeff is talking about completely random mac's, while I get mac's that are based on the ip
13:30 < strontian> well, I'm afraid I'm running out of ideas
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13:34 < jeroenh> aargh
13:34 < jeroenh> turns out the script I was testing with didn't really use the proper kernel :(
13:34 < jeroenh> back to the drawing board
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14:06 < jeroenh> strontian: thanks for your help, I've got it working now
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14:53 < jdike> Hi guys
14:53 < kokoko1> bonjour jdike 
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14:59 < strontian> jeroenh: good to hear
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15:22 < jdike> caker, how's your power doing?
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15:51 < pgstudy> hi. I am having trouble loading uml. i am running ./linux and the file root_fs is there but it says: "Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0)"
16:11 < jdike> grep UBD .config
16:15 < pgstudy> # CONFIG_BLK_DEV_UBD is not set
16:15 < pgstudy> jdike:# CONFIG_BLK_DEV_UBD is not set
16:17 < jdike> that would be why
16:17 < jdike> start over with a defconfig
16:18 < kokoko1> see ya
16:18  * kokoko1 crawl to bed
16:20 < pgstudy> jdike: cool, will do.
16:21 < kokoko1> jdike, http://rootprompt.org/ :)
16:21 < jdike> heh, cool
16:22 < kokoko1> I want UML famous, let me know what can i do for it :)
16:22 < kokoko1> I must sleep now its been 12+ hours infront to computer now
16:27 < uroboros_> kokoko1: 12 hours only? :( You are lucky man, oh really... :(
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16:45 < uroboros_> May I ask a thing? Why there is no SELinux when doing make ARCH=um defconfig && make ARCH=um menuconfig ??
16:45 < uroboros_> Kernel 2.6.20.
16:46 < uroboros_> I could not find it under security options in menuconfig...
16:46 < orionrobots> I am experiencing an issue when trying to mount swap/ When I swapon, then issue a top or swap -s, the host cpu max's out, and the guest kernel stops with the message "BUG: soft lockup detected on CPU#0!". 
16:48 < orionrobots> I am using the vmlinux-2.6.18.1-bb2 kernel with the startup command as follows: "./vmlinux-2.6.18.1-bb2 ubd0=./root_fs ubd1=./swap eth0=tuntap,,,192.168.1.3 mem=256M". It is using an Ubuntu root fs created with debootstrap. Please does anyone here have any ideas?
16:51 < jdike> uroboros_, no one added it to the UML kconfig
16:53 < jdike> orionrobots, the softlockup isn't really a hang
16:53 < orionrobots> Ok
16:53 < jdike> what's happening on the UML when you add swap?
16:53 < orionrobots> I end up having to kill -9 the UML.
16:53 < jdike> lots of stuff needing to swap?
16:54 < orionrobots> Umm - there is no swap. When I boot it does not mount it.
16:54 < jdike> you ran swapon
16:54 < orionrobots> So it is the first time I try to manually bring it on. The swapon itself does not hang it, but if I then run top or swap -s, then I get an immediate cpu max out.
16:54 < jdike> yeah, but memory pressure when you run swapon?
16:54 < orionrobots> Umm - good point - hold on..
16:54 < orionrobots> Let me try it.
16:55 < jdike> top does it?
16:55 < orionrobots> top following swapon will definitely do it.
16:55 < jdike> strange
16:56 < orionrobots> I also see this during boot - I dont know if it is related - but just seems unexpected " * Filesystem type 'usbfs' is not supported. Skipping mount.
16:56 < orionrobots> "
16:56 < jdike> not a problem
16:56 < jdike> take it out of your fstab
16:56 < uroboros_> jdike: whyso? How can I enable it now?
16:57 < uroboros_> jdike: Is it a good idea to enable SELinux in UML? Will it work properly?
16:57 < orionrobots> Ok.
16:57 < jdike> sure, there shouldn't be any problem with it
16:57 < orionrobots> So top run without swap - I get 201800k free mem, and 254532k total, 0k swap.
16:58 < orionrobots> The swap file was created with dd, and mkswap. I used count not seek to ensure it was not a "sparse" file.
17:00 < orionrobots> I wander why the kernel is clocking the swap entry (or one of the others) as usbfs..
17:04 < orionrobots> Hmm spotted something possibly at fault - my fstab - had dump 1 and pass 0 - which should have been the other way for my root_fs.
17:09 < orionrobots> Bingo - that actually sorted it - no worries. 
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17:24 < pgstudy> i am using the rootfs from the site: root_fs.md-8.1-full.pristine.20020322.bz2 and it says INIT: Id "0" respawning too fast: disabled for 5 minutes
17:24 < pgstudy> i have not yet added the modules since i wanted to use hostfs
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--- Log closed Tue Feb 13 23:59:00 2007