IRC chat logs for #ltsp on (webchat)

Channel log from 7 October 2016   (all times are UTC)

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hello, i'm trying to set up LTSP with NFS on Ubuntu 16.04 (it uses NBD by default)
i've added to /etc/exports:
opt/ltsp/i386 *(ro,no_root_squash,async,no_subtree_check)
now there's some strange behaviour: the client boots, but all system files are not writeable by root with permission denied error
however they all have 644 permission and owned by root
so LTSP cannot completely set up the system
e.g. /etc/resolv.conf is empty because /etc/resolvconf/resolv.conf.d/base is not writeable
the ro option has caused it to be mounted read only, change it to rw
doesn't LTSP use aufs for changes to FS in memory?
with NBD it works ok
did you restart the nfs-kernel-server?
i don't know then, if everything is right it should be working
i've tried NFS in Debian Jessie where it is used by default and it worked
my debian nfs has ro, so that's correct
but in Ubuntu 16.04 it doesn't
I haven't tried it on ubuntu yet
ubuntu doesn't use nfs by default so it might be a little tricky getting it working
13:36 < this has some info on reverting though
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Vlad__: overlayfs doesn't work correctly in new kernels over nfs, so use nbd instead
Or, wait for the newest kernel that will fix the issue
I think it's in debian testing
Why do you want nfs instead of nbd?
for testing; i'm tired of rebuilding image after every small change)
you can use a raw nbd image
No need to rebuild it then
Like, ext4 inside it
sorry, what is raw nbd"
can you explain pls?
Vlad__: dd if=/dev/zero of=/opt/ltsp/images/i386.img bs=1m count=1000
mkfs.ext4 /opt/ltsp/images/i386.img
mount -o loop i386.img /mnt
cp -a /opt/ltsp/i386 /mnt
...etc, so that you make an image that contains the chroot instead of a directory
Then whenever you want to do changes, you mount it somewhere and chroot to it, and the changes are immediately visible
It's also possible to use virtualbox to maintain a .raw disk
And even do snapshots and merge them when you're ready to push them
thanks i'll try it
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