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#uml IRC Logs for 2007-12-11

---Logopened Tue Dec 11 00:00:52 2007
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05:09<the_hydra-#uml->>hi all
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05:50<cl4sh-#uml->>hi all
05:52<the_hydra-#uml->>hi
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08:46<dgraves_-#uml->>morning
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10:07<dgraves_-#uml->>blah.
10:10[~]dang #uml agrees, as long as dgraves_ is talking about the weather...#uml-> agrees, as long as dgraves_ is talking about the weather...
10:19<dgraves_-#uml->>in general, yeah, dang. :)
10:19<dgraves_-#uml->>anyone know how to add linker flags to the thigns built in teh scripts area, like genksyms?
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10:37|-|jdike [~jdike@pool-71-248-190-161.bstnma.fios.verizon.net] has joined #uml
10:37<jdike-#uml->>Hi guys
10:37<cl4sh-#uml->>hi
10:37<caker-#uml->>yo
10:37<dang-#uml->>Morning, jdike
10:42<jdike-#uml->>let's see how well rc5 works
10:42<cl4sh-#uml->>:)
10:47<jdike-#uml->>It builds
10:48<jdike-#uml->>It boots
10:51<dgraves_-#uml->>morning jdike!
10:51<jdike-#uml->>how's your debugging going?
10:58<dgraves_-#uml->>fairly good.
10:58<dgraves_-#uml->>i gave up getting the scripts (genksysm, etc) running on EL4, can't figure out how to add linker lines, and nothing i add to the file seems to fix it.
10:58<dgraves_-#uml->>so i moved the build machine to a EL5, and i'm working on getting our modules running in it for a stress test of uml.
10:59<dgraves_-#uml->>how's life down there?
11:03<jdike-#uml->>icy
11:11<dgraves_-#uml->>:(
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12:36<dgraves_-#uml->>jdike, i'm having issue loggin into a fs. the root password has a shadow on it, and merely changing the entires in the etc/shadow doesn't change the root password.
12:36<dgraves_-#uml->>what's the best way to do this?
12:37<jdike-#uml->>boot single-user and run passwd from there
12:39<dgraves_-#uml->>jdike, it wants the root password for maintenance though.
12:39<jdike-#uml->>use emergency instead of single
12:40<dgraves_-#uml->>still wants root password.
12:40<dgraves_-#uml->>hmmmm.. maybe i'll try init=/bin/bash
12:41<jdike-#uml->>usually one of them works with no password
12:41<jdike-#uml->>init=bash is the next thing to do
12:41<jdike-#uml->>also 'rw' on the command line
12:41<dgraves_-#uml->>ah, i did a remount,rw /
12:42<jdike-#uml->>OK
12:42<dgraves_-#uml->>thanks. i'm bemused i forgot about singe\emo though
12:48|-|tyler29 [~tyler@ARennes-257-1-101-188.w81-48.abo.wanadoo.fr] has joined #uml
13:01<dang-#uml->>dgraves_: loop mount the image, and chroot into it as roo.
13:01<dang-#uml->>er root.
13:02<dang-#uml->>That's how I build my images...
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13:04<dgraves_-#uml->>jdike, ARGH! it won't let me log in!
13:04<dgraves_-#uml->>no matter what i change tha pssword too.
13:04<dgraves_-#uml->>the hash is changing.
13:04[~]dgraves_ #uml tries useradd this time.#uml-> tries useradd this time.
13:05<dang-#uml->>dgraves_: Some init script randomizing the root password?
13:05<dang-#uml->>I know some live CDs do that.
13:05<dang-#uml->>(Gentoo's does...)
13:06[~]dgraves_ #uml is trying a new user now.#uml-> is trying a new user now.
13:06<dgraves_-#uml->>dang, hrm. hadn't thought of that. i'll look into that.
13:09<dgraves_-#uml->>dang, do you know which script it is on gentoo?
13:15<dang-#uml->>dgraves_: Not sure, but gentoo has it's own init system...
13:18<dgraves_-#uml->>oh yeah, that's true.
13:18<dgraves_-#uml->>much nicer in a lot of ways.
13:18[~]dgraves_ #uml doesn't mean to start an argument though. :)#uml-> doesn't mean to start an argument though. :)
13:18<dang-#uml->>:)
13:18<dang-#uml->>Well, it's a separate (non-gentoo) project now, so other people can use it...
13:19<dang-#uml->>The dev is porting it to free/open bsd right now.
13:20<dgraves_-#uml->>yeah, good luck seeing that in RH though. :)
13:22<dang-#uml->>:)
13:23<dang-#uml->>RH is going to switch to dbus activations, tho, aren't they?
13:30<dgraves_-#uml->>not sure
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13:58<caker-#uml->>jdike: ping?
13:59<caker-#uml->>I've got a freshly deployed UML distro hanging at "VFS: Mounted root (ext3 filesystem) readonly.", 2.6.23.x-um
13:59<caker-#uml->>looping this: http://p.linode.com/88
13:59<dgraves_-#uml->>caker, join the club?
14:00<dgraves_-#uml->>skas3 or 0?
14:00<caker-#uml->>dgraves_: skas3 is how I roll
14:00<dgraves_-#uml->>dang.
14:00<caker-#uml->>this is an elusive bug I've seen for a long time, albeit rarely
14:01<dang-#uml->>dgraves_: Don't blame me... :P
14:01<dang-#uml->>I just posted my patch last night.
14:08<jdike-#uml->>hmm
14:08<jdike-#uml->>I wonder what it's thinking
14:08<jdike-#uml->>unmap something then immediately map it back
14:09<jdike-#uml->>what version of UML?
14:10<caker-#uml->>jdike: 2.6.23.1
14:15<caker-#uml->>love it .. when I boot it manually it works .. via my scripts, it hangs
14:16<dang-#uml->>Modify your script to echo rather than run and run the same set of commands?
14:17<dang-#uml->>It seems to me I had to introduce sleeps to my script to make my UMLs boot reliably...
14:18<dang-#uml->>Maybe there's some kind of race related to the ubd device?
14:18<dgraves_-#uml->>i'll race your ubd device!
14:18<dang-#uml->>:)
14:19<dang-#uml->>Mine's pretty slow... You'd probably win.
14:23<caker-#uml->>jdike: ok, happens reliably with mem=1500M
14:28<caker-#uml->>Kernel virtual memory size shrunk to 1529872384 bytes <-- if I see a line like that, it's a crapshoot if it's going to hang or not
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14:53<jdike-#uml->>Mem: 1508448 43540 1464908 0 7292 22544
14:53<jdike-#uml->>1500M boots OK here
14:55<jdike-#uml->>both rc5 and rc4-mm1
14:56<jdike-#uml->>caker, can you gdb such a UML and get a stack trace from it?
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16:08<dgraves_-#uml->>alright, uml channel, jdike, et al....
16:08<dgraves_-#uml->>what am i doing wrong?
16:08|-|ferret_0567 [~travis@cpe-72-191-26-86.satx.res.rr.com] has joined #uml
16:08<dgraves_-#uml->>i'm following the uml_net instructions: http://user-mode-linux.sourceforge.net/network.html
16:09|-|ferret_0567 [~travis@cpe-72-191-26-86.satx.res.rr.com] has quit []
16:09<dgraves_-#uml->>but when i get to the part about adding the default route, the network is unreachable.
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16:09<dgraves_-#uml->>i've got a tap0 on my host.
16:09<dgraves_-#uml->>i've got an eth0 in the guest....
16:12<jdike-#uml->>you need a route to whatever the target of your default route is
16:13<dgraves_-#uml->>jdike, except i can't ping my host.
16:13<dgraves_-#uml->>[root@stain14 ~]# ping 140.87.1.136
16:13<dgraves_-#uml->>connect: Network is unreachable
16:13<dgraves_-#uml->>[root@stain14 ~]# route add default gw 140.87.1.136
16:13<dgraves_-#uml->>SIOCADDRT: Network is unreachable
16:13<jdike-#uml->>what routes do you have?
16:13<dgraves_-#uml->>Destination Gateway Genmask Flags Metric Ref Use Iface
16:13<dgraves_-#uml->>192.168.125.0 * 255.255.255.0 U 0 0 0 eth0
16:13<jdike-#uml->>well, route add -host 140.87.1.136 dev eth0
16:14<dgraves_-#uml->>why is that not in the instructions?
16:15<jdike-#uml->>because the instructions assume that the UML is in the same subnet as the host
16:15<dgraves_-#uml->>looks like it works, just fine.
16:15<dgraves_-#uml->>ah.
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16:28<dgraves_-#uml->>jdike, cross your fingers!
16:28<dgraves_-#uml->>presubmit testing is started in the EL5 uml.
16:52[~]jdike #uml figures out why switch_mm was broken#uml-> figures out why switch_mm was broken
16:55<dgraves_-#uml->>wasn't me? :)
16:55<jdike-#uml->>nope
16:56<jdike-#uml->>not this time
16:56<jdike-#uml->>new_mm created a snapshot of the address space, and my implementation of switch_mm jumped back to it
17:08<dgraves_-#uml->>as opposed to?
17:10<jdike-#uml->>I wasn't expecting the time travel aspect of it
17:10<jdike-#uml->>it jumped back to an older version of its address space
17:13<dgraves_-#uml->>oh, yeah, that'd do it.
17:13<dgraves_-#uml->>but we all want time travel!@
17:13[~]dgraves_ #uml debates starting cookie backing.#uml-> debates starting cookie backing.
17:13<dgraves_-#uml->>you like snickerdoodles, jdike?
17:13<jdike-#uml->>dunno
17:13<dgraves_-#uml->>ginger snaps?
17:14<jdike-#uml->>yum
17:14<dgraves_-#uml->>caramel shortbread squares?
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17:42<Magotari-#uml->>What a crazy day. *sigh*
17:47<dgraves_-#uml->>what's up Magotari?
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18:02<Magotari-#uml->>dgraves_: Just a low energy day. Kinda took a day off, from school (I'm dropping out soon, no point to stay in a place which does not teach me) and no coding either. And then there is a matter of water all over circuits...
18:02<Magotari-#uml->>Yeah, at least the microwave is working. So I have food.
18:02<Magotari-#uml->>But the powerbar might be toast.
18:03<Magotari-#uml->>Anyway, I did promise a patch for a bug today... Soooo... I'm on it.
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18:18<dgraves_-#uml->>Magotari: wow. that's wierd. :)
18:18<Magotari-#uml->>Not too strange. I spilled water all over the place and stuff got wet...
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18:25<dgraves_-#uml->>oh!
18:26<dgraves_-#uml->>i thought like it just showed up wet, Magotari. :)
18:28<Magotari-#uml->>No, sadly not so. I'm fully responsible. Over a liter of nice clean water left the water filter. Then instead of into the electric kettle it arrived on a powerbar, the microwave and the fridge.
18:30<Magotari-#uml->>Ok, third revision. This should work. Testing time.
18:31<Magotari-#uml->>Just a few more days and I get to just use defconfig. No more menuconfig just to tweak one thing. Thanks Jeff.
18:34<jdike-#uml->>just dump the patch in and you have it now
18:35<Magotari-#uml->>I'm trying to work on clean trees for work resulting in patches.
18:35<Magotari-#uml->>Still, I am quite tempted to try it out with mmotm. Guess I can give it a spin.
18:39<Magotari-#uml->>A little slip of mind. halt != stop
18:40<Magotari-#uml->>Patch tested. Works.
18:41<Magotari-#uml->>jdike: I noticed you add comments to my patches. I wonder if I should be more verbose in my patch submissions?
18:58<Magotari-#uml->>Even though written on 23.9 it applied fine to rc4-mm1, although with some offset.
19:15<Magotari-#uml->>Rediffed... Ok, sending, I guess.
19:21<Magotari-#uml->>Of course I had to integrate and differentiate some tricky math, calculate some nonlinear accelerations and invoke the secrets of marketing to create this patch. No wonder I want to drop out.
19:21<Magotari-#uml->>I'm off for the day.
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19:49<namit-#uml->>is the COW file just read form the dist or is all of it loaded into memory?
19:54<dang-#uml->>I think it's memmap'd
20:10<dgraves_-#uml->>namit, mmap
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---Logclosed Wed Dec 12 00:00:13 2007