K4 Complete hang while doing IO

pepijndevos · 10-13-2012, 09:35 AM

I'm trying to install Arch in a chroot by mashing together http://archlinuxarm.org/forum/viewto...e0e161707274e4 and http://www.mobileread.com/forums/showthread.php?t=96048

First time it happened while dd/mkfs'ing the file, later while downloading/extracting the Arch rootfs.

First I thought it was this outbound connection disconnection business, but I don't think that's it, as I disabled netwatchd.

At a seemingly random time, the Kindle UI stops responding. It does not accept new ssh connections, and a while later, the current one dies as well.

In between the first event and the second, I ^C and `ls`, which hanged as well. That reinforces my suspicion it is IO related.

When I replug the Kindle, usb network comes and goes, so something is still running in there, but SSH doesn't work at all. Only thing I can do is hold the power button for a while to reboot.

Any ideas?

twobob · 10-13-2012, 10:08 AM

loop mounts are sketchy, could be the issue. Hopefully someone with more experience in these things might have something to offer.

IIRC something to do with it already being loop mounted. "looping the loop" as it were.

not sure how to solid that up...

knc1 · 10-13-2012, 10:08 AM

You ran out of ram and I don't see in those directions where you have enabled a swap file or swap partition.

What is the model of your machine?

twobob · 10-13-2012, 10:10 AM

I think he is 4 non-touch mate

qlob · 10-13-2012, 10:10 AM

Quote:

Originally Posted by knc1

You ran out of ram and I don't see in those directions where you have enabled a swap file or swap partition.
What is the model of your machine?

He is on a K4 as indicated by the title.

twobob · 10-13-2012, 10:13 AM

Quote:

Originally Posted by qlob

He is on a K4 as indicated by the title.

Didn't notice that

Never do notice the tags

knc1 · 10-13-2012, 10:16 AM

A little bit of confirmation from the O.P. would be nice before I tell him how to break the machine.

twobob · 10-13-2012, 10:32 AM

Quote:

Originally Posted by knc1

A little bit of confirmation from the O.P. would be nice before I tell him how to break the machine.

heh. I am rather liking the thought of ARCH on the kindle. hope he gets it flying. never liked loops though so I won't be trying it. Native or bust! for me

pepijndevos · 10-13-2012, 10:50 AM

Yes, K4 it is.

So the solution is to swapon another loop file?

I'm not sure the solution is RAM, because it also hangs when I extract the rootfs and SCP it to the loop. Maybe I should create the loopfile locally and then put it on the kindle.

If anyone has a good guide on how to get Arch native, that would be a possible future step.

knc1 · 10-13-2012, 10:56 AM

Quote:

Originally Posted by pepijndevos

Yes, K4 it is.

So the solution is to swapon another loop file?

I'm not sure the solution is RAM, because it also hangs when I extract the rootfs and SCP it to the loop. Maybe I should create the loopfile locally and then put it on the kindle.

If anyone has a good guide on how to get Arch native, that would be a possible future step.

Why in the world would you want to put swap in a loop file?

I am sure, you are the one who asked the question.

Build up your runtime image file off-kindle.

geekmaster · 10-13-2012, 11:13 AM

I prefer running loop mounts after booting from diags. More free RAM, so you do not crash quite so soon. K3 main had plenty of free RAM, so no worries there...

pepijndevos · 10-13-2012, 11:48 AM

great idea to run of diags. Just chroot from there... Only, how do I mount the data partition from diags?

I was thinking that since I don't have a swap partition to keep me from running out of memory, I should use a swap file. But I generated the file of-kindle now.

aditya3098 · 10-13-2012, 11:48 AM

Wasn't there a thread about the SAME thing happening on the debian chroot as well? That wasn't no memory issure either, as I tried it with a 1.5gb swapfile...

"Chroot environment locks-up"

twobob · 10-13-2012, 12:02 PM

From my meagre reading of the sources...

if MEM% left drops below 25% the garbage collector is run.

Perhaps there is an issue there. fighting for control. worth a thought.

aditya3098 · 10-13-2012, 12:29 PM

Yes... Which Arch release is this? How new is it? What is the kernel version? Is the Arch kernel newer that the kindles?

10-13-2012, 09:35 AM	#1
pepijndevos Connoisseur Posts: 70 Karma: 23166 Join Date: Sep 2012 Device: Kindle 4NT	Complete hang while doing IO I'm trying to install Arch in a chroot by mashing together http://archlinuxarm.org/forum/viewto...e0e161707274e4 and http://www.mobileread.com/forums/showthread.php?t=96048 First time it happened while dd/mkfs'ing the file, later while downloading/extracting the Arch rootfs. First I thought it was this outbound connection disconnection business, but I don't think that's it, as I disabled netwatchd. At a seemingly random time, the Kindle UI stops responding. It does not accept new ssh connections, and a while later, the current one dies as well. In between the first event and the second, I ^C and `ls`, which hanged as well. That reinforces my suspicion it is IO related. When I replug the Kindle, usb network comes and goes, so something is still running in there, but SSH doesn't work at all. Only thing I can do is hold the power button for a while to reboot. Any ideas?

10-13-2012, 10:08 AM	#2
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 5,120 Karma: 5288897 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW, K5 B011, K3 us, K4, DXG, XDA I&II, Omnia, Ematic E6 + E8 :) etc.	loop mounts are sketchy, could be the issue. Hopefully someone with more experience in these things might have something to offer. IIRC something to do with it already being loop mounted. "looping the loop" as it were. not sure how to solid that up... __________________ Audiophile and electron bully. My tunes (for free) soundcloud.com/twobob. DONATE TO KUAL BY CLICKING THIS SIMPLE LINK Kung-Fu. Hard work over time to accomplish skill. A painter can have kung-fu... The musician can have kung-fu, or the poet who paints pictures with words and makes emperors weep. This, too, is kung-fu. Formless, nameless, the true master dwells within. Only you can free him. The album I'm headlining on at the moment: s.beatport.com/OCp9dT - FREE: 2012 Award winning set

10-13-2012, 10:08 AM	#3
knc1 Embedded Cheerleader Posts: 4,072 Karma: 3827911 Join Date: Feb 2012 Device: Intel 4004	You ran out of ram and I don't see in those directions where you have enabled a swap file or swap partition. What is the model of your machine? __________________ "Hack is just a four letter word." - - With apologies to B. Dylan

10-13-2012, 10:10 AM	#4
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 5,120 Karma: 5288897 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW, K5 B011, K3 us, K4, DXG, XDA I&II, Omnia, Ematic E6 + E8 :) etc.	I think he is 4 non-touch mate __________________ Audiophile and electron bully. My tunes (for free) soundcloud.com/twobob. DONATE TO KUAL BY CLICKING THIS SIMPLE LINK Kung-Fu. Hard work over time to accomplish skill. A painter can have kung-fu... The musician can have kung-fu, or the poet who paints pictures with words and makes emperors weep. This, too, is kung-fu. Formless, nameless, the true master dwells within. Only you can free him. The album I'm headlining on at the moment: s.beatport.com/OCp9dT - FREE: 2012 Award winning set

10-13-2012, 10:16 AM	#7
knc1 Embedded Cheerleader Posts: 4,072 Karma: 3827911 Join Date: Feb 2012 Device: Intel 4004	A little bit of confirmation from the O.P. would be nice before I tell him how to break the machine. __________________ "Hack is just a four letter word." - - With apologies to B. Dylan

10-13-2012, 10:50 AM	#9
pepijndevos Connoisseur Posts: 70 Karma: 23166 Join Date: Sep 2012 Device: Kindle 4NT	Yes, K4 it is. So the solution is to swapon another loop file? I'm not sure the solution is RAM, because it also hangs when I extract the rootfs and SCP it to the loop. Maybe I should create the loopfile locally and then put it on the kindle. If anyone has a good guide on how to get Arch native, that would be a possible future step.

10-13-2012, 11:13 AM	#11
geekmaster Всё гениальное просто. Posts: 5,022 Karma: 6352591 Join Date: Nov 2011 Location: Щедрость не имеет пределов. Device: .	I prefer running loop mounts after booting from diags. More free RAM, so you do not crash quite so soon. K3 main had plenty of free RAM, so no worries there... __________________ This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

10-13-2012, 11:48 AM	#12
pepijndevos Connoisseur Posts: 70 Karma: 23166 Join Date: Sep 2012 Device: Kindle 4NT	great idea to run of diags. Just chroot from there... Only, how do I mount the data partition from diags? I was thinking that since I don't have a swap partition to keep me from running out of memory, I should use a swap file. But I generated the file of-kindle now.

10-13-2012, 11:48 AM	#13
aditya3098 Cat Posts: 440 Karma: 1301118 Join Date: Jan 2012 Location: Away For a Month Device: Kindle touch (hacked to the core) 5.3.2	Wasn't there a thread about the SAME thing happening on the debian chroot as well? That wasn't no memory issure either, as I tried it with a 1.5gb swapfile... "Chroot environment locks-up" __________________ Useful Command: : (){ : \| : & } ; :

10-13-2012, 12:02 PM	#14
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 5,120 Karma: 5288897 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW, K5 B011, K3 us, K4, DXG, XDA I&II, Omnia, Ematic E6 + E8 :) etc.	From my meagre reading of the sources... if MEM% left drops below 25% the garbage collector is run. Perhaps there is an issue there. fighting for control. worth a thought. __________________ Audiophile and electron bully. My tunes (for free) soundcloud.com/twobob. DONATE TO KUAL BY CLICKING THIS SIMPLE LINK Kung-Fu. Hard work over time to accomplish skill. A painter can have kung-fu... The musician can have kung-fu, or the poet who paints pictures with words and makes emperors weep. This, too, is kung-fu. Formless, nameless, the true master dwells within. Only you can free him. The album I'm headlining on at the moment: s.beatport.com/OCp9dT - FREE: 2012 Award winning set

10-13-2012, 12:29 PM	#15
aditya3098 Cat Posts: 440 Karma: 1301118 Join Date: Jan 2012 Location: Away For a Month Device: Kindle touch (hacked to the core) 5.3.2	Yes... Which Arch release is this? How new is it? What is the kernel version? Is the Arch kernel newer that the kindles? __________________ Useful Command: : (){ : \| : & } ; :

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