IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 29 November 2010   (all times are UTC)

00:01
<alkisg>
Also some code can be dropped from ltsp_nbd, as the nbd-client initramfs script can properly mount the root by itself, there's no need to duplicate its code
00:02
...and a third thing that I'd like to test + commit would be to move the udhcp initscript to a later stage, init-premount is too soon as mentioned in the initramfs-tools man page.
00:03
Those 3 changes are somewhat extensive, so I'd like to have some feedback first before implementing, testing and committing...
00:07
Hmmm or we may wait when the new nbd-client package will be published (Wouter waits for the Debian to be unfreezed before doing so), because at that point an nbd port change to IANA assigned 10809 will also be needed
00:08
So ok lets leave that for squeeze+1 and natty+1, ignore me... :D
00:23
<vagrantc>
alkisg: i still don't understand how to use the standard nbd scripts while allowing for squashfs+tmpfs+aufs
00:24
i know nbd'
00:24
s
00:24
cow file support might be an option
00:25
alkisg: but yeah, any changes right now will have to be squeeze+1 for debian
00:25
(a.k.a. wheezy)
00:27
<alkisg>
vagrantc: no, aufs will still be handled by ltsp_nbd
00:27
But there's no need to duplicate the code for nbd root mounting
00:27
<vagrantc>
it would have to unmount the nbd root and then remount it
00:29* alkisg currently has only looked at the first part, the "poweroff -fp / properly shuttting down" without using ltsp hacks
00:29
<alkisg>
I didn't look about aufs etc, but that's a separate task
00:31
If the nbd mounting code needs to be duplicated, ok, np. But still that's unrelated to the sendsigs/shutdown etc workarounds, those are not needed anymore.
00:34
<vagrantc>
the sendsigs stuff also catches nbd swap, though
00:34
<alkisg>
swap is unmounted at shutdown
00:34
<vagrantc>
and, if it continues, nbd-proxy
00:34
<alkisg>
So they shouldn't cause any problems
00:34
<vagrantc>
manually added swap?
00:34
<alkisg>
yes
00:36
Sure we could leave the nbd-proxy sig there, but imho nbd-proxy should be rewritten as an nbd-client fork, now it wastes a lot of CPU just moving data within localhost (==the ltsp client)
00:37
(and a fork is easier to merge upstream, again imho)
00:37
<vagrantc>
haven't really used it much, seen it behave badly in a couple places
00:38* alkisg exactly the same
00:38
<vagrantc>
at least one person switched to debian because of it :)
00:38
<alkisg>
The nbd initramfs script mounts /dev/nbd0, can't we use aufs on top of that?
00:38
<vagrantc>
well, it actually mounts it at the root filesystem
00:38
<alkisg>
I think that's done by init?
00:39
<vagrantc>
no
00:39
<alkisg>
(by looking at the root=/dev/nbd0 parameter?)
00:39
<vagrantc>
the initramfs's init script calls the mountroot function defined in scripts/$BOOT
00:40
the weird thing about the nbd root scripts are that it uses the boot=local stuff
00:40
vs. boot=ltsp_nbd or boot=nfs
00:40
hmmmm.... oh, maybe you're right
00:41
<alkisg>
I think nbd prepares /dev/nbd0, and then mountroot() uses that
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00:41
<vagrantc>
right, right ...
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00:41
<alkisg>
So if we change ROOT to /rootfs (what's the name), then that will also be done automatically
00:41
<vagrantc>
the nbd-client script is implemented oddly...
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00:54
<vagrantc>
alkisg: simply tweaking ROOT will cause a number of problems
00:56
well, maybe it's not as problematic as i thought...
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01:49
<vagrantc>
oh, we'd definitely have to have an alternate local script... as it mounts the raw device, and can't handle non-devices
01:50
but it could still run all the local hooks and such, in addition to the other hooks...
01:57* alkisg postpones that until nbd 2.9.18 lands in Debian/Ubuntu, with the name-based exports and the new 10809 port - we should probably deal with all the big changes at once...
01:58
<vagrantc>
sounds reasonable
01:58* vagrantc hopes the newer versions of nbd will remain fairly backportable
01:59
<alkisg>
Specifying the nbd export with dhcp sounds very handy :)
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02:00
<vagrantc>
yeah, i worked on some patches to make that possible
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02:04
<gnunux>
hi
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09:45
<Axachi>
Appiah. I filed a bug report on Launchpad. about the $* "$@" bug in maverick 10.10.
09:45
thx again for helping out.
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09:45
<Axachi>
I have one more challange
09:46
I needto get some printers going they are connectedlocally on the thin clients..
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09:49
<Axachi>
arg need to go her. will pick this up tomorrow..
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19:36
<MephistoM>
hi, is there any ste-by-step documentation on setting up edubuntu LTSP or would it be the same as the doc at: https://sourceforge.net/apps/mediawiki/ltsp/index.php?title=Ltsp_LtspDocumentationUpstream
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19:42
<itcharlie>
MephistoM: the setup should be similar to Ubuntu Documentation
19:43
<MephistoM>
thank you itcharlie
19:43
<itcharlie>
have you been able to install succesfully?
19:45
<MephistoM>
no, the installation will be tomorrow
19:46
we have a dedicated server, and the other equipement, and existing stand-alone computers that will run as thin clients
19:46
this is our first shot at this
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19:49
<itcharlie>
Hmm Good luck
19:50
<MephistoM>
thanks
19:50
any tips beforehand?
19:50
<itcharlie>
test it before deploying it
19:50
but I don't think you have much time
19:51
You can always come to this channel when you get stuck
19:51
<MephistoM>
thanks, I will definitely do that tomorrow if we do get stuck
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