IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 11 September 2015 (all times are UTC)
| 02:08 | AlexPortable has left IRC (AlexPortable!uid7568@gateway/web/irccloud.com/x-ohbdkidnqmmgrhvy, Quit: Connection closed for inactivity) | |
| 02:23 | pppingme has left IRC (pppingme!~pppingme@unaffiliated/pppingme, Ping timeout: 255 seconds) | |
| 03:13 | pppingme has joined IRC (pppingme!~pppingme@unaffiliated/pppingme) | |
| 03:45 | work_alkisg is now known as alkisg | |
| 03:48 | dgroos has joined IRC (dgroos!~dgroos@vpn.mpls.k12.mn.us) | |
| 03:49 | pppingme has left IRC (pppingme!~pppingme@unaffiliated/pppingme, Excess Flood) | |
| 03:59 | <alkisg> !vnc-dide | echo dgroos:
| |
| 03:59 | <ltsp> dgroos: 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.
| |
| 04:01 | dgroos_ has joined IRC (dgroos_!~dgroos@mail.troop187.org) | |
| 04:36 | <alkisg> !kvm
| |
| 04:36 | <ltsp> kvm: Virtual thin client: kvm -vga-vmware -ctrl-grab -no-shutdown -net nic,model=virtio -net user,tftp=/var/lib/tftpboot,bootfile=/ltsp/i386/pxelinux.0
| |
| 04:51 | dgroos has left IRC (dgroos!~dgroos@vpn.mpls.k12.mn.us, Ping timeout: 256 seconds) | |
| 04:51 | dgroos_ is now known as dgroos | |
| 05:08 | dgroos1 has joined IRC (dgroos1!~dgroos@mail.troop187.org) | |
| 05:55 | ricotz has joined IRC (ricotz!~rico@ubuntu/member/ricotz) | |
| 06:08 | mikkel has joined IRC (mikkel!~mikkel@mail.dlvs.dk) | |
| 06:16 | <alkisg> dgroos: truncate: cannot open \u2018/var/log/lastlog\u2019 for writing: Value too large for defined data type
| |
| 06:17 | That happens when lastlog is bigger than the available server ram
| |
| 06:17 | <dgroos1> OK, I should have noticed that message then.
| |
| 06:17 | <alkisg> Yours was 3.3 GB, and it went inside the image as 3.3 GB instead of 0 byte
| |
| 06:17 | Then, at login, useradd tries again to truncate that file and fails because the client doesn't have 3.3 GB in the tmpfs
| |
| 06:18 | <dgroos1> why did it say that the image size was only 1.2 gigs or so?
| |
| 06:18 | <alkisg> Now, to find a better way than "truncate" in order to fix it
| |
| 06:18 | Where did it say that?
| |
| 06:18 | <maldridge> alkisg: I'm a fan of the echo "" > $file method myself
| |
| 06:19 | <dgroos1> when it serves the image, I believe right next to the block size.
| |
| 06:19 | <alkisg> dgroos1, the image is compressed
| |
| 06:19 | <dgroos1> yes
| |
| 06:19 | <alkisg> So inside the 1.3 GB compressed image, there's a 3.3 GB lastlog file
| |
| 06:19 | <dgroos1> right!
| |
| 06:20 | <alkisg> Let me check locally about truncate vs other things...
| |
| 06:20 | <dgroos1> sure
| |
| 06:25 | <alkisg> dgroos1, should we better just fix it for you by backing up or deleting lastlog from the ltsp server?
| |
| 06:25 | vmlintu has left IRC (vmlintu!~vmlintu@a91-152-200-13.elisa-laajakaista.fi, Read error: Connection reset by peer) | |
| 06:25 | <alkisg> ...and then I'll check it and fix it upstream in ltsp without hurry...
| |
| 06:26 | <dgroos> hey maldridge!
| |
| 06:26 | up late…
| |
| 06:27 | alkisg: (ah, you asked a question!) I can just delete lastlog. but I’m concerned that if it get’s big again…
| |
| 06:29 | <maldridge> dgroos: eh, troubleshooting an LTSP image rebuild issue before I get some sleep
| |
| 06:30 | <dgroos> I feel that pain…
| |
| 06:33 | <maldridge> its an issue with the way I wrote my ansible playbook, so I just need to add some logic to check if an image already exists before creating one
| |
| 06:35 | <alkisg> truncate: cannot open \u2018/var/log/lastlog\u2019 for writing: Value too large for defined data type
| |
| 06:48 | OK I think I have enough info to reproduce the error, the problem is probably in overlayfs, not in tmpfs
| |
| 06:49 | <dgroos> !
| |
| 06:50 | OK.
| |
| 06:51 | pppingme has joined IRC (pppingme!~pppingme@unaffiliated/pppingme) | |
| 06:52 | <alkisg> http://www.noah.org/wiki/Lastlog_is_gigantic
| |
| 06:53 | Ah, so it's preallocated for all users in your ldap server...
| |
| 06:53 | <dgroos> getting tired… :)
| |
| 06:53 | <alkisg> OK then, it will be big again soon :-./
| |
| 07:28 | Steps to reproduce the issue (as root): cd $(mktemp -d); mkdir lower upper work root; truncate -s 4G lower/sparse; mount -t overlay -o workdir=work,upperdir=upper,lowerdir=lower overlay work; truncate -s 0 work/sparse; umount work
| |
| 07:28 | The `truncate -s 0 work/sparse` command errors out
| |
| 07:38 | Grembler has joined IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net) | |
| 07:44 | uXus has left IRC (uXus!~uXus@217.77.222.72, Quit: ail bi bek) | |
| 07:49 | uXus has joined IRC (uXus!~uXus@217.77.222.72) | |
| 08:12 | joe__ has joined IRC (joe__!c3c38a40@gateway/web/freenode/ip.195.195.138.64) | |
| 08:13 | joe__ has left IRC (joe__!c3c38a40@gateway/web/freenode/ip.195.195.138.64, Client Quit) | |
| 08:43 | oldjoe has joined IRC (oldjoe!c3c38a40@gateway/web/freenode/ip.195.195.138.64) | |
| 08:46 | <alkisg> OK, here's a good substitute...
| |
| 08:46 | find /var/log/ -type f -exec truncate -s 0 {} + ==> 20 seconds, won't work with files > 2GB
| |
| 08:46 | find /var/log/ -type f -exec tee {} + </dev/null ==> 0.5 second, works fine with > 2 GB
| |
| 08:48 | <oldjoe> HI guys, Thinking of setting this up in our college lab. Does the DHCP server offer addresses to clients connected on both network cards? Or just on the 192.168.0.1 card? Thanks
| |
| 08:48 | <alkisg> oldjoe: it depends on how you set it up, there's no default dhcp setting
| |
| 08:49 | If you specify a range, it only serves addresses in that one, from the nic that does have an ip in that range
| |
| 08:50 | <oldjoe> alkisg, thanks, I guess that will become apparent when I do the install and start the configs, will have a go, many thanks.
| |
| 08:51 | <alkisg> oldjoe: it's also possible to have a single nic setup
| |
| 08:51 | !ltsp-pnp
| |
| 08:51 | <ltsp> ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
| |
| 08:51 | <alkisg> !proxydhcp
| |
| 08:51 | <ltsp> proxydhcp: A proxy DHCP server is defined by the PXE specification as a server which sends auxiliary boot information to clients, like the boot filename, tftp server or rootpath, but leaves the task of IP leasing to the normal DHCP server. More info: https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP
| |
| 08:52 | <oldjoe> Thnaks guyt
| |
| 08:52 | oops.... thanks guys, will save this and have a look when I get into the configs.
| |
| 08:53 | I may be back ;-)
| |
| 08:54 | <alkisg> The first one is for the installation phase
| |
| 08:54 | I.e. you install different packages, dnsmasq instead of isc-dhcp-server
| |
| 08:58 | <oldjoe> alkisg, do you have any preference of package? I have a little experience with linux, but am diving into the deep end with this, I suppose it the best way of learning.
| |
| 08:59 | <alkisg> oldjoe: if this is your first time with ltsp, then ltsp-pnp is a good method to get your first installation going
| |
| 08:59 | Just read and follow that page
| |
| 09:04 | <oldjoe> athnk
| |
| 09:04 | Thanks... will get into it later, got to go now, thanks for your help.
| |
| 09:07 | oldjoe has left IRC (oldjoe!c3c38a40@gateway/web/freenode/ip.195.195.138.64) | |
| 09:18 | <alkisg> Reported to http://permalink.gmane.org/gmane.linux.file-systems.union/408 and fixed in LTSP, https://bugs.launchpad.net/ltsp/+bug/1494660.
| |
| 09:18 | dgroos, dgroos1 ^
| |
| 09:51 | dgroos1 has left IRC (dgroos1!~dgroos@mail.troop187.org, Remote host closed the connection) | |
| 10:00 | mikkel has left IRC (mikkel!~mikkel@mail.dlvs.dk, Remote host closed the connection) | |
| 10:02 | mikkel has joined IRC (mikkel!~mikkel@mail.dlvs.dk) | |
| 10:10 | alkisg is now known as work_alkisg | |
| 10:12 | gbaman has joined IRC (gbaman!~gbaman@host81-148-140-104.in-addr.btopenworld.com) | |
| 10:38 | telex has left IRC (telex!teletype@freeshell.de, Remote host closed the connection) | |
| 10:39 | Grembler has left IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net, Read error: Connection reset by peer) | |
| 10:40 | telex has joined IRC (telex!teletype@freeshell.de) | |
| 10:50 | Grembler has joined IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net) | |
| 10:54 | Grembler has left IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net, Read error: Connection reset by peer) | |
| 11:05 | Grembler has joined IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net) | |
| 11:09 | Grembler has joined IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net) | |
| 11:16 | Phantomas has joined IRC (Phantomas!~ftsamis@ubuntu/member/phantomas) | |
| 11:45 | Faith has joined IRC (Faith!~paty_@unaffiliated/faith) | |
| 12:04 | danau11 has joined IRC (danau11!~durban@12.197.179.122) | |
| 12:04 | danau11 has left IRC (danau11!~durban@12.197.179.122) | |
| 12:08 | AlexPortable has joined IRC (AlexPortable!uid7568@gateway/web/irccloud.com/x-taakoehxflxldwwk) | |
| 12:31 | <dgroos> bye!
| |
| 12:31 | dgroos has left IRC (dgroos!~dgroos@mail.troop187.org, Quit: dgroos) | |
| 12:53 | gbaman_ has joined IRC (gbaman_!~gbaman@host81-148-140-104.in-addr.btopenworld.com) | |
| 12:56 | gbaman has left IRC (gbaman!~gbaman@host81-148-140-104.in-addr.btopenworld.com, Ping timeout: 250 seconds) | |
| 12:56 | gdi2k has left IRC (gdi2k!~gdi2k@119.94.31.20, Ping timeout: 244 seconds) | |
| 13:35 | Faith has left IRC (Faith!~paty_@unaffiliated/faith, Ping timeout: 250 seconds) | |
| 13:35 | Faith has joined IRC (Faith!~paty_@143.107.231.30) | |
| 13:36 | Faith is now known as Guest67653 | |
| 13:54 | warren has left IRC (warren!~warren@fedora/wombat/warren, Ping timeout: 260 seconds) | |
| 13:56 | warren has joined IRC (warren!~warren@fedora/wombat/warren) | |
| 13:59 | Guest67653 has left IRC (Guest67653!~paty_@143.107.231.30) | |
| 14:00 | Faith has joined IRC (Faith!~paty_@unaffiliated/faith) | |
| 14:04 | cyberorg has left IRC (cyberorg!~cyberorg@opensuse/member/Cyberorg, Remote host closed the connection) | |
| 14:06 | cyberorg has joined IRC (cyberorg!~cyberorg@opensuse/member/Cyberorg) | |
| 14:07 | ben_roose has joined IRC (ben_roose!~roose@roose.cs.wichita.edu) | |
| 14:09 | Grembler has left IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net, Read error: Connection reset by peer) | |
| 14:11 | cyberorg has left IRC (cyberorg!~cyberorg@opensuse/member/Cyberorg, Remote host closed the connection) | |
| 14:21 | Grembler has joined IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net) | |
| 14:21 | cyberorg has joined IRC (cyberorg!~cyberorg@opensuse/member/Cyberorg) | |
| 14:31 | myrdd has joined IRC (myrdd!~quassel@55d4172f.access.ecotel.net) | |
| 14:33 | mikkel has left IRC (mikkel!~mikkel@mail.dlvs.dk, Quit: Leaving) | |
| 14:51 | <myrdd> Hello, I'm using LTSP for one year now, and it's working very well – thanks to the developers! I've got a problem though: On the server I'm using "schroot" to get into /opt/ltsp/*/. However, when I'm in there, it is impossible for the clients to boot – it ends up in a kernel panic. I guess it has to do with "mount --bind" and NFS, but I don't know how to investigate. Do you have some tips for me?
| |
| 15:19 | Phantomas has left IRC (Phantomas!~ftsamis@ubuntu/member/phantomas) | |
| 15:42 | uXus has left IRC (uXus!~uXus@217.77.222.72, Quit: ail bi bek) | |
| 15:45 | uXus has joined IRC (uXus!~uXus@217.77.222.72) | |
| 15:51 | gdi2k has joined IRC (gdi2k!~gdi2k@119.94.31.20) | |
| 16:13 | vagrantc has joined IRC (vagrantc!~vagrant@unaffiliated/vagrantc) | |
| 16:56 | gdi2k has left IRC (gdi2k!~gdi2k@119.94.31.20, Quit: Leaving) | |
| 17:00 | AlexPortable has left IRC (AlexPortable!uid7568@gateway/web/irccloud.com/x-taakoehxflxldwwk) | |
| 17:36 | telex has left IRC (telex!teletype@freeshell.de, Remote host closed the connection) | |
| 17:38 | telex has joined IRC (telex!teletype@freeshell.de) | |
| 18:03 | mgariepy has left IRC (mgariepy!~mgariepy@ubuntu/member/mgariepy, Remote host closed the connection) | |
| 18:06 | mgariepy has joined IRC (mgariepy!~mgariepy@ubuntu/member/mgariepy) | |
| 18:34 | jammcq has joined IRC (jammcq!~jam@c-107-4-115-38.hsd1.mi.comcast.net) | |
| 18:39 | ben_roose has left IRC (ben_roose!~roose@roose.cs.wichita.edu, Remote host closed the connection) | |
| 19:07 | Faith has left IRC (Faith!~paty_@unaffiliated/faith, Quit: Leaving) | |
| 19:36 | <jammcq> exit
| |
| 19:36 | quit
| |
| 19:36 | jammcq has left IRC (jammcq!~jam@c-107-4-115-38.hsd1.mi.comcast.net, Quit: WeeChat 0.4.2) | |
| 19:58 | work_alkisg is now known as alkisg | |
| 19:59 | <alkisg> myrdd: that's normal, unionfs filesystems don't like the lower fs to be changed
| |
| 20:00 | E.g. suppose the user opens /path/to/file, which means that it generates a copy in his COW view of the file system, and then you change /path/to/file in NFS, or delete /path completely, what would unionfs do there...
| |
| 20:00 | So you would either not use the NFS dir when you boot the client with NFS, or you could use NBD, AoE...
| |
| 20:01 | ricotz has left IRC (ricotz!~rico@ubuntu/member/ricotz, Quit: Ex-Chat) | |
| 20:02 | gbaman has joined IRC (gbaman!~gbaman@members.unit1.farsetlabs.org.uk) | |
| 20:12 | Grembler has left IRC (Grembler!~Ben@cpc29-aztw22-2-0-cust128.18-1.cable.virginm.net, Quit: I Leave) | |
| 20:12 | <myrdd> Hi alkisg, thanks for your answer so far! Doesn't NBD have that problem as well?
| |
| 20:13 | <alkisg> myrdd: no, because a snapshot is saved
| |
| 20:13 | ltsp-update-image runs mksquashfs which ...zips /opt/ltsp/i386 into /opt/ltsp/images/i386.img
| |
| 20:13 | So the chroot is free, it can be edited, deleted, etc
| |
| 20:17 | <myrdd> ah-ha, I've missed that!
| |
| 20:19 | What happens if I call ltsp-update-image while clients are running?
| |
| 20:20 | <alkisg> A new i386.img is created. The old one is renamed to i386.img.old. In the next logout, the clients get a warning that a new image is available, and if they want to reboot to it
| |
| 20:21 | No disruption in the client use..
| |
| 20:21 | <myrdd> wow, great! I'll see if I get it working. Thanks a lot alkisg!
| |
| 20:22 | <alkisg> you're welcome
| |
| 20:22 | Ah, it's also a lot faster than nfs
| |
| 20:34 | alkisg is now known as work_alkisg | |
| 21:43 | gbaman has left IRC (gbaman!~gbaman@members.unit1.farsetlabs.org.uk, Remote host closed the connection) | |
| 21:43 | gbaman has joined IRC (gbaman!~gbaman@members.unit1.farsetlabs.org.uk) | |
| 22:52 | adrianorg has left IRC (adrianorg!~adrianorg@186.215.18.167, Quit: leaving) | |
| 23:04 | Tyrantelf has left IRC (Tyrantelf!~tyrantelf@2607:5300:60:48bd::1, Read error: Connection reset by peer) | |
| 23:04 | Tyrantelf has joined IRC (Tyrantelf!~tyrantelf@2607:5300:60:48bd::1) | |
| 23:28 | telex has left IRC (telex!teletype@freeshell.de, Remote host closed the connection) | |
| 23:30 | telex has joined IRC (telex!teletype@freeshell.de) | |
| 23:37 | gbaman has left IRC (gbaman!~gbaman@members.unit1.farsetlabs.org.uk, Ping timeout: 264 seconds) | |
| 23:46 | adrianorg has joined IRC (adrianorg!~adrianorg@186.215.18.167) | |
| 23:46 | Neytiri has joined IRC (Neytiri!~The_Acid_@2001:470:860d:127::219) | |
| 23:47 | <Neytiri> does anyone know of a way i can transfer a window from one thin client to another without closing and restarting the program?
| |
| 23:53 | gbaman has joined IRC (gbaman!~gbaman@dab-yat1-h-55-9.dab.02.net) | |
| 23:56 | vagrantc has left IRC (vagrantc!~vagrant@unaffiliated/vagrantc, Quit: leaving) | |
| 23:59 | <maldridge> Neytiri: the way the X server is written, you can't
| |