IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 22 August 2016 (all times are UTC)
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| 17:54 | <dgroos> hi All
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| 17:54 | just installed 16.04 then ltsp-pnp as per https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 17:55 | clients will boot, but I can't ping 8.8.8.8 on clients. Can ping 192.168.67.1
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| 17:55 | I've got a 2 NIC setup.
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| 17:56 | Anyone share ideas how I can troubleshoot lack of internet connectivity on the clients?
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| 18:03 | cat /etc/resolv.conf on a client shows just:
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| 18:03 | 192.168.67.1
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| 18:03 | that right?
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| 18:14 | <vagrantc> you need to set up NAT on your LTSP server
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| 18:15 | or connect your clients to a network that's routable
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| 18:15 | or use thin clients, but i'd recommend sticking with fat clients if your hardware is reasonably good
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| 18:16 | <dgroos> thanks vagrantc
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| 18:16 | <vagrantc> !nat
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| 18:16 | <ltsp> nat: To set up NAT in your LTSP server, set its internal IP to 192.168.67.1 and put http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/head:/debian/sch-scripts.if-up to /etc/network/if-up.d/sch-scripts. This also takes care of flow-control issues, possibly increasing your network speed 10 times. :)
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| 18:16 | <vagrantc> well, that's specific
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| 18:16 | <dgroos> :-)
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| 18:16 | I'll give it a go!
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| 18:33 | <dgroos> OK going to reboot server...
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| 18:33 | <vagrantc> shouldn't need that...
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| 18:41 | <bennabiy> alright, I am finally biting the bullet and going fat client...
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| 18:41 | if you don't hear from me... give my wishes to my fami... wait.
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| 18:49 | <dgroos> vagrantc, I remember alkisg helping me with this very step last year. I should have tried it--had it written down.
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| 18:49 | <vagrantc> dgroos: hah
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| 18:49 | bennabiy: fat clients are generally the way to go in this day and age
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| 18:50 | bennabiy: i can't imagine you'll have much other than a positive experience...
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| 18:50 | <dgroos> Client is not booting--stops at tftp stage.
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| 18:50 | I've done a lot of messing around with things in the last 5 hours trying to solve this.
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| 18:51 | gonna reinstall ubuntu and do this fix when things are clean.
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| 18:51 | Be back in a while!
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| 18:51 | * alkisg waves | |
| 18:52 | <dgroos> :-) Hey there!
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| 18:52 | <alkisg> dgroos: reinstall to solve tftp?!
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| 18:52 | Need help there?
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| 18:53 | <dgroos> would be great! alkisg
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| 18:53 | <alkisg> !vnc-dide
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| 18:53 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 18:54 | <dgroos> thanks!
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| 18:54 | tried, last line says: reverse_connect: srv1-dide.ioa.sch.gr failed
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| 18:55 | before that: connect_tcp[ipv6]: setsockopt IPV6_V6ONLY: Protocol not available
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| 18:55 | <alkisg> dgroos: try again, my fault
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| 18:55 | Somehow xvnc4viewer wasn't launched this time
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| 18:59 | dgroos: all ok?
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| 19:00 | <dgroos> OK! boots.
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| 19:00 | <alkisg> 5 minutes in VNC beat 5 hours in IRC every time :)
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| 19:00 | <dgroos> For sure, though 5 hours of my time vs 5 min of yours :-)
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| 19:00 | thanks!
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| 19:01 | <alkisg> You're welcome
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| 19:01 | <dgroos> Now, I can't ping 8.8.8.8 from a client. I did the sch-script ifup
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| 19:07 | <alkisg> !nat
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| 19:07 | <ltsp> nat: To set up NAT in your LTSP server, set its internal IP to 192.168.67.1 and put http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/head:/debian/sch-scripts.if-up to /etc/network/if-up.d/sch-scripts. This also takes care of flow-control issues, possibly increasing your network speed 10 times. :)
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| 19:07 | <alkisg> dgroos: you put it to sch-scripts.ifup, instead of plain sch-scripts
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| 19:07 | And it wasn't running at all
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| 19:07 | <dgroos> alas!
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| 19:07 | Again, thanks so much for doing this.
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| 19:08 | Is this needed because I'm doing a 2 NIC setup?
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| 19:08 | <alkisg> Yes
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| 19:09 | <dgroos> OK, I'm going to add this info to the 'StaticIP'. wait... not that page
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| 19:10 | Can you suggest a new page to create on the site and I'll make it w/the info.
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| 19:10 | <alkisg> I think I should add it upstream to ltsp, even if vagrantc will complain about it a bit :)
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| 19:10 | <dgroos> Yeah, I need to read detail more closely p-)
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| 19:11 | <alkisg> So that in the end, only an `ltsp-config pnp` will be needed...
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| 19:11 | <dgroos> Well I give it multiple +1
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| 19:11 | This stopped me last year too though there was something else.
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| 19:12 | 1 more Q: How can I set it so that the client has the modern login.
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| 19:12 | <alkisg> What do you mean?
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| 19:13 | <dgroos> only has to put in password
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| 19:13 | and if it's wrong, the page doesn't reload
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| 19:13 | <vagrantc> alkisg: we kind of got stalled out on uploads ... do you still want to follow up on that, or should i give it a whirl?
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| 19:13 | <dgroos> ie not the beautiful 'white background' splash page
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| 19:14 | <alkisg> dgroos: I think you mean "use lightdm instead of ldm"
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| 19:14 | <dgroos> OK :-)
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| 19:14 | <alkisg> That cannot be done easily, ltsp needs its own display manager
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| 19:14 | So, forget about it until ltsp 6 :)
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| 19:14 | <dgroos> OK,
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| 19:15 | anything that a person with my knowledge can do to help out some?
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| 19:15 | <alkisg> vagrantc: too many summer vacations... and then too much work will follow... so I don't think I'll be working on that until maybe late september
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| 19:16 | <dgroos> I can do a translate or test or something? Haven't helped out is a while.
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| 19:16 | <vagrantc> alkisg: ok, i should probably get ltsp back into a working state in debian ... and maybe sync up epoptes and ltsp in jessie-backports...
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| 19:16 | alkisg: that was all we had on the agenda, right?
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| 19:17 | <alkisg> dgroos: nah, unfortunately currently ltsp needs from someone a lot of time in either documentation or coding, spending a couple of days won't be very useful... so bug reporting or sponsoring tasks is enough until someone finds enough time to work on ltsp
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| 19:17 | vagrantc: I think so, yes
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| 19:18 | <dgroos> OK
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| 19:18 | Have a great evening!
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| 19:18 | <alkisg> You too!
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| 21:00 | <bennabiy> alkisg: I am running into the situation again when trying to run ltsp-update-image --cleanup / about my mounted drives (anything which has a bind mount on it)
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| 21:01 | What file do I need to edit to restrict those folders?
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| 21:01 | <alkisg> bennabiy: /etc/ltsp/ltsp-update-image.excludes
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| 21:01 | <bennabiy> alkisg: thank you.
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| 21:01 | <alkisg> np
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| 21:04 | <bennabiy> not working...
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| 21:04 | mount: mount point /tmp/tmp.Toksgfzxyc/root/home/gad/Documents/SECURE does not exist
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| 21:04 | Could not mount /tmp/tmp.Toksgfzxyc/root/home/gad/Documents/SECURE.
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| 21:05 | <alkisg> What did you put in .excludes?
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| 21:06 | <bennabiy> home0/*
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| 21:06 | home/gad/Documents/SECURE/*
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| 21:06 | home/gad/D... is bind mounted from /home0/
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| 21:07 | from a folder within home0
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| 21:08 | <alkisg> I don't remember, did we solve the issue last time, and how?
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| 21:09 | <bennabiy> I filed a bug report, but I do not remember us actually getting a solution
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| 21:10 | <alkisg> link?
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| 21:10 | <bennabiy> other than for me to totally unmount it all before running the script
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| 21:10 | umm, I would have to dig it up... it was a couple years ago
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| 21:10 | * alkisg thought all such issues were resolved a while ago | |
| 21:12 | <bennabiy> nope
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| 21:12 | this is part of what has kept me from doing fat clients now that I remember
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| 21:12 | <alkisg> fat clients is not specific to ltsp-pnp
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| 21:13 | <bennabiy> yes, but I was trying to do linuxmint fat client before I had full support for mint
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| 21:13 | It is slowly coming back to me
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| 21:14 | <alkisg> Did you find the bug?
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| 21:23 | <bennabiy> nope
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| 21:23 | I am looking through the mailing list as well
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| 21:24 | * alkisg doesn't see anything related to https://bugs.launchpad.net/~bennabiy ... | |
| 21:26 | <bennabiy> ok, well, I will have to look into this more later. My time is up.
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| 21:26 | If you think of anything, I will check later
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| 21:26 | thank you alkisg
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| 21:26 | I will file a report later if I remember
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| 21:27 | <alkisg> bennabiy: make sure you're using the latest ltsp version
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| 21:28 | <bennabiy> alkisg: https://pastebin.mozilla.org/8903267
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| 21:29 | <alkisg> Seems fine
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| 21:29 | <bennabiy> yup
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| 21:29 | <alkisg> Is that on the latest mint?
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| 21:29 | <bennabiy> 16.04
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| 21:29 | ubuntu-mate
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| 21:30 | <alkisg> OK, file a bug report and include all the necessary info, like existing mounts, error messages etc
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| 21:30 | I.e. some way to reproduce it...
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| 21:31 | <bennabiy> It is when there overlapped file mounts
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| 21:31 | say home0 is a device, but then I mount another device within /home0
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| 21:32 | I have /home as a seperate partition, and then I bind mount onto it something else
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| 21:32 | <alkisg> I have /home mounted from /dev/sda1, and /home/Shared from /dev/sda2, and it works fine
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| 21:32 | <bennabiy> that is what is happening
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| 21:32 | encrypted?
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| 21:32 | <alkisg> No
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| 21:32 | Normal ext4
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| 21:33 | <bennabiy> these are also luks /dev/mapper/device mounts
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| 21:33 | <alkisg> OK, describe a simple way to reproduce it in the bug report
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| 21:34 | <bennabiy> will try
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| 21:35 | <vagrantc> can't imagine luks will cause any additional problems
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| 21:35 | a device is a device is a device
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| 21:35 | <bennabiy> I am trying to think of what is different about the setup
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| 21:35 | <vagrantc> sure
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| 21:35 | <bennabiy> because my thumbdrive which is luks was also causing the error
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| 21:36 | then it switched to the other luks device
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| 21:36 | one direct mounted through fstab, the other a bind mount
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| 21:37 | so I unmount that directory, and it works fine
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| 21:37 | <alkisg> vagrantc: what do you think of this, for people looking for extremely cheap fat clients? http://www.gearbest.com/tv-box-mini-pc/pp_367432.html
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| 21:37 | <bennabiy> alkisg: that is a good deal, but it is double the price in a couple hours
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| 21:38 | <alkisg> bennabiy: what do you mean? the old offer expired, and the new offer is 1 euro cheaper than the old one...
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| 21:38 | They make offers all the time
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| 21:38 | <bennabiy> I just got a https://www.amazon.com/ZOTAC-Quad-Core-Graphics-Barebones-ZBOX-BI323-U/dp/B0179R42V4
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| 21:38 | ah,
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| 21:39 | I did not check on it
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| 21:39 | we ordered two but have not received them yet
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| 21:39 | <alkisg> That zotac does have double the price though
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| 21:40 | Also, no ram, no internal memory...
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| 21:41 | <bennabiy> yes, I have ram on hand as well as drives
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| 21:41 | <alkisg> Sure, but that means triple the price
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| 21:41 | <vagrantc> alkisg: looks reasonable ... dunno what proc or video it's got
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| 21:42 | * vagrantc reads further | |
| 21:42 | <bennabiy> alkisg: I am not saying that the one you linked is a bad deal, just telling you I am trying them both out
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| 21:42 | <alkisg> vagrantc: Intel Z8300 Quad-core CPU/Intel HD Graphic as GPU
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| 21:42 | <bennabiy> vagrantc: Atom X5-Z8300
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| 21:42 | <alkisg> passmark score = 1200
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| 21:42 | <bennabiy> The Z8700 looks impressive for Atom
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| 21:42 | <vagrantc> with 32GB of eMMC, you could do local swap and rootfs
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| 21:42 | <alkisg> Right
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| 21:43 | <bennabiy> you would not want to local swap to eMMC though
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| 21:43 | <alkisg> And even secure boot :P :D
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| 21:43 | <vagrantc> and that would leave a lot of room for wear leveling
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| 21:43 | <bennabiy> right?
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| 21:44 | well, I need to go...
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| 21:44 | <alkisg> bb
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| 21:44 | * bennabiy waves | |
| 21:44 | <vagrantc> bennabiy: if it supports wear-leveling, and you only use 10% of the disk ... even if you used 90% of the disk, any reasonble recent memory-disk tech will last a long time
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| 21:44 | * vagrantc waves to alkisg | |
| 21:46 | <vagrantc> i'd guess 1-2GB for rootfs (if using squashfs) and 2-4GB for swap ... that's 6gb ~ 20% usage, with 24G for wear-levelling (presuming it doesn't even have 5-10% set aside in hardware)
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| 21:46 | if it supports TRIM, you're set.
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| 21:46 | to wipe out the windows install and free that up for wear levelling
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| 21:47 | <bennabiy> as far as the eMMC I thought it was just a memory card on board, not your normal ssd
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| 21:48 | didn't think it supported trim
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| 21:48 | etc
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| 21:48 | but I am probably wrong about that
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| 21:48 | <vagrantc> most of the arm board eMMC i've seen supports trim
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| 21:48 | <bennabiy> that would be encouraging
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