TheGrebs.com:IRC Logs:#uml:2005:04:13

---	Log	opened Wed Apr 13 00:00:47 2005
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00:31	itamarjp	[root@router conacci]# resize2fs -p root_fs.fc-2-client.pristine.20040504
00:31	itamarjp	resize2fs 1.36 (05-Feb-2005)
00:31	itamarjp	resize2fs: File too large while trying to determine filesystem size
00:31	itamarjp	[root@router conacci]# mount root_fs.fc-2-client.pristine.20040504 x -o loop
00:31	itamarjp	[root@router conacci]# cd x
00:31	itamarjp	[root@router x]# ls
00:31	itamarjp	bin boot dev etc home initrd lib lost+found mnt opt proc root sbin selinux sys tmp usr var
00:32	itamarjp	[root@router x]# pwd
00:32	itamarjp	/uml2/conacci/x
00:32	itamarjp	[root@router x]#
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04:58	Court3nay	..anyone alive? :)
04:58	BurtyB	no
04:59	Court3nay	heh..
05:00	Court3nay	ah, is there a way to reconnect the xterm to the console? i closed x accidentally..
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09:16	bodo	hi all
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10:33	jdike	hi guys
10:33	Darky	lo jeff
10:35	bodo	Hi jdike!
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10:36	jdike	Sorry I wasn't around yesterday
10:36		* jdike was recovering from an FC4 install
10:37	bodo	jdike: do you remember the "write of switch_pipe failed, err = 9" panics, that happened when
10:38	jdike	bodo: yeah, I could never reproduce that, you debugged it some
10:38	bodo	jdike: I was experimenting with kipp_ptraced_process on 2.6.9?
10:38	bodo	jdike: now I can reproduce this on tt-s390 nearly on each boot
10:39	jdike	bodo: cool, does that help figure out what it is?
10:39	bodo	jdike: unfortunately not yet.
10:39	bodo	jdike: when I insert prints into exit_thread_tt, the problem goes away
10:40	jdike	bodo: printks?
10:40	bodo	jdike: yes, sorry, typo
10:40	jdike	bodo: try log_info, that logs directly to the host
10:40	jdike	bodo: I haven't seen it disturb any race conditions
10:41	bodo	jdike: I added "current->thread.mode.tt.switch_pipe[0] = -1234;" in exit_thread_tt
10:41	bodo	jdike: ten, I check it in switch_to, at the beginning
10:41	bodo	..........then
10:42	bodo	jdike: and it tells me, that exit_thread_tt had been called for that switch_pipe()
10:43	jdike	bodo: so it seems to be switching to a process which has already exite
10:43	jdike	exited
10:44	bodo	jdike: yeah, but why does scheduler call switch_to() for an exited process?
10:44	jdike	bodo: it shouldn't
10:44	bodo	jdike: I have absolutely no idea, how this might happen
10:44	jdike	bodo: what I would do is log_info at both spots, with a stack trace, 3 or 4 deep
10:45	jdike	bodo: gcc's __builtin_return_value(n) is handy here
10:45	jdike	bodo: maybe exit_thread_tt is being called when it shouldn't somehow
10:45	bodo	jdike: the problem is, I would have to trace all exiting processes, since I don't know, which one will fail
10:46	bodo	jdike: exit_thread_tt is called by exit_thread only
10:46	bodo	which is called by do_exit only
10:46	jdike	bodo: OK
10:46	bodo	jdike: at least, if code does what source says
10:49	bodo	jdike: would it be a good idea to skip this:
10:49	bodo	if((from->exit_state == EXIT_ZOMBIE) \|\|
10:49	bodo	(from->exit_state == EXIT_DEAD))
10:49	bodo	os_kill_process(os_getpid(), 0);
10:49	bodo	jdike: maybe, I could use gdb to analyze the stack
10:49	jdike	bodo: I don't think so
10:50	jdike	bodo: from's stack will be freed, and if it doesn't kill itself here, the host process could try to run later, on the freed stack
10:53	AquaJo	hmm, has anyone tested a 2.4.30 bis Blaisorblades patches?
10:54	AquaJo	<- ist wondering if there is a meory leak
10:54	AquaJo	after running 2-3 Days it claims about 80 MB RAm used (out of 95)
10:55	AquaJo	and there is only a rsynd and a sshd running
10:55	AquaJo	(so everything more than 10-15 MB is too much)
10:56	AquaJo	has anyoe tested something like that?
10:56	AquaJo	or is it even known?
10:56	jdike	AquaJo: I fixed a task_struct leak in 2.6, not sure if it's applicable to 2.4
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10:58	AquaJo	Is your patch somewhere avaiable? Then I'd look if I'd could apply it to 2.4
10:59	jdike	AquaJo: it long since went into 2.6
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11:02	jsanders	I need to set up a serial line from the host to a device in UML that I can access. Any ideas?
11:04	AquaJo	searching in my Mailarchives
11:05	jsanders	I really need to have each "honeypot" UML on its own network via pppd.
11:07	AquaJo	hmm, can't find it on the lists
11:09	jsanders	Yes - I did do a lot of checking myself and found some references to a 2002 message that said that ppp did not work in UML. I find that disapointing. I was wondering if any new work was in progress in the serial driver for UML area?
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11:11	AquaJo	jdike: I'll try to figure it out, or ask BB If he knows something about it
11:25	jdike	jsanders: there are some ioctls that the serial driver needs to understand
11:25	jdike	jsanders: I don't understand ppp/serial drivers, so I haven't done anything with that
11:33	jsanders	I was wondering if anyone had set up the ppp via a serial connection similar to a VPN?
11:35	jsanders	Like maybe just using the serial line to carry bits and let the ppp on both ends do the networking like ppp/ssh only w/o the security layer.
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11:39	bodo	Bye.
11:39	jsanders	Anyway - I can not get the UML to even properly open the serial line. My UML line has "ssl1=tty:/dev/ttyS0" but /dev/tts/1 won't open from the UML side. Any ideas?
11:39	jdike	bye bodo
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13:57	jsanders	bye
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21:53	brum	hello, i am trying to get an NFS partition shared between 2 UML. both the UMLs are on the same bridge ( obtained via brctl ) , network connectivity is fine.
21:53	brum	I exported a share off of one the UMLs to the other say from 192.168.0.2 ---> 192.168.0.4
21:54	brum	but when I try to mount it from the .4 , it says permission denied. When I look on the nfs server, it says that 192.168.0.1 is trying to mount it ...
21:54	brum	but that's the IP of the bridge.
21:56	brum	any suggestions?
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22:37	brum	nm, I got it.
22:37	brum	however, I have to use IPs instead of names.... I don't know hwy.
22:37	brum	why.
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---	Log	closed Thu Apr 14 00:00:26 2005