Jeg jobber til daglig ved Universitetet -i Oslo, en institusjon som lenge har vektlagt verdien av åpne -standarder og fri programvare. Men noe har endret seg, og for en -liten stund tilbake annonserte USIT at dagens fungerende e-postsystemet -basert på fri programvare skulle byttes ut med Microsoft Exchange og -at Microsoft Outlook skulle bli den best fungerende men antagelig ikke -eneste støttede e-postklienten. Annonseringen har ført til flere -protester og en -underskriftskampanje, initiert av Diana Santos, der så langt 253 -personer har signert. Prosjektet -NIKE (Ny integrert -kalender/e-post) ble initiert for å se på mulige løsninger med -utgangspunkt i at en kombinert epost/kalenderløsning var påkrevd, og -prosjektet -NIKE-implementasjon -er igang med å rulle ut MS Exchange ved Universitetet i Oslo.
- -For kun kort tid siden ble det annonsert at det blir et åpent møte -med ledelsen hos universitetet i Oslo med disse planene som tema:
- -Tid: Onsdag 2013-06-05 kl. 10:00
-
Sted: 9. etasje i Lucy Smiths hus (admin-bygget)
Det kan være en god plass å stille opp hvis en som meg ikke tror -valget av Microsoft Exchange som sentral epostinfrastruktur er et -heldig valg for Norges ledende forskningsuniversitet, men at en er mer -tjent med å selv -beholde -kontrollen over egen infrastruktur.
- -Saken har ført til endel presseoppslag så langt. Her er de jeg har -fått med meg:
+ +The first wheezy based beta release of Debian Edu was wrapped up +today. This is the release announcement:
+ +New features for Debian Edu 7.1+edu0~b0 released +2013-07-27
+ +These are the release notes for for Debian Edu / Skolelinux +7.1+edu0~b0, based on Debian with codename "Wheezy".
+ +About Debian Edu and Skolelinux
+ +Debian Edu, also known as +Skolelinux, is a Linux distribution based on Debian providing an +out-of-the box environment of a completely configured school +network. Immediately after installation a school server running all +services needed for a school network is set up just waiting for users +and machines being added via GOsa², a comfortable Web-UI. A netbooting +environment is prepared using PXE, so after initial installation of +the main server from CD, DVD or USB stick all other machines can be +installed via the network. The provided school server provides LDAP +database and Kerberos authentication service, centralized home +directories, DHCP server, web proxy and many other services. The +desktop contains +more +than 60 educational software packages and more are available from +the Debian archive, and schools can choose between KDE, Gnome, LXDE +and Xfce desktop environment.
+ +This is the fifth test release based on Debian Wheezy. Basically +this is an updated and slightly improved version compared to the +Squeeze release.
+ +ALERT: Alpha based installations should reinstall or downgrade the +versions of gosa and libpam-mklocaluser to the ones used in this beta +release.
+ +Software updates
+ +-
+
+
- Switched roaming workstation profiles from wicd to network-manager + for network configuration, as wicd didn't work any more. +
- Changed version numbers of patched gosa and libpam-mklocaluser + packages to make sure our locally patched versions will be replaced + by the official packages when they are released from Debian. Those + installing alpha version need to reinstall or manually downgrade gosa + and libpam-mklocaluser. +
- Added bluetooth tools to the default desktop (bluedevil, blueman). +
- Added tools for sharing the desktop on KDE (krdc, krfb). +
- Added valgrind to the default installation for easier debugging of + crash bugs. + +
Other changes
+ +-
+
+
- Fixed artwork package to work with gnome, no longer break + desktop=gnome installations. +
- Adjusted installer to now work when forced to use a proxy with the + netinst CD. +
- Fixed code detecting and setting/loading hardware specific + setup/firmware to work more robust out of the box. +
- Adjusted Kerberos setup to detect realm and server settings at + install time instead of dynamically at run time. This avoid a crash + with krb5-auth-dialog on diskless workstations without a DNS name. +
- Worked around misfeature in network-manager not calling the dhclient + exit hooks, causing automatic proxy configuration and automatic host + name setting at run time to work again. +
- Fixed feature setting the default Iceweasel start page from URL + fetched from LDAP, to allow schools to set the global default by + updating the dc=skole,dc=skolelinux,dc=no LDAP object. +
- Changed default host name on all networked machines to be unique + (generated from MAC or reverse DNS) after boot. +
- Adjusted partition sizes to make sure they are big enough. + +
Known issues
+ +-
+
+
- Grub is missing the new artwork. +
- KDE fail to understand the wpad.dat file provided, causing it to + not use the http proxy as it should. +
- Chromium also fail to use the proxy. + +
Where to get it
+ +To download the multiarch netinstall CD release you can use
-
-
- 2013-05-29 - Forsvarer - nytt IT-system - Universitas +
- ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso + +
- http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso + +
- rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso . -
- 2013-05-23 - UiO - innfører nytt epost- og kalenderverktøy - Uniforum +
The MD5SUM of this image is: 55d5de9765b6dccd5d9ec33cf1a07109
+
The SHA1SUM of this image is: 996a1d9517740e4d627d100de2d12b23dd545a3f
To download the multiarch USB stick ISO release you can use
+-
-
- 2013-05-15 - UiO - må ha kontroll over sitt eget epostsystem - Uniforum +
- ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso +
- http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso +
- rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso .
The MD5SUM of this image is: d8f0818c51a78d357de794066f289f69
+
The SHA1SUM of this image is: 49185ca354e8d0543240423746924f76a6cee733
How to report bugs
+ +Included in Debian Edu / -Skolelinux, there are quite a lot of educational software. -Created to help teachers teach, and pupils learn. We have tried to -tag them all using debtags use::learning and role::program, and using -the debtags I was happy to be able to create a collage of the -educational software packages installed by default, sorted by the -debtag field. Here it is. Click on a image to learn more about the -program.
- - - -field::arts
- + +Today I switched to +my +new laptop. I've previously written about the problems I had with +my new Thinkpad X230, which was delivered with an +180 +GB Intel SSD disk with Lenovo firmware that did not handle +sustained writes. My hardware supplier have been very forthcoming in +trying to find a solution, and after first trying with another +identical 180 GB disks they decided to send me a 256 GB Samsung SSD +disk instead to fix it once and for all. The Samsung disk survived +the installation of Debian with encrypted disks (filling the disk with +random data during installation killed the first two), and I thus +decided to trust it with my data. I have installed it as a Debian Edu +Wheezy roaming workstation hooked up with my Debian Edu Squeeze main +server at home using Kerberos and LDAP, and will use it as my work +station from now on.
+ +As this is a solid state disk with no moving parts, I believe the +Debian Wheezy default installation need to be tuned a bit to increase +performance and increase life time of the disk. The Linux kernel and +user space applications do not yet adjust automatically to such +environment. To make it easier for my self, I created a draft Debian +package ssd-setup to handle this tuning. The +source +for the ssd-setup package is available from collab-maint, and it +is set up to adjust the setup of the machine by just installing the +package. If there is any non-SSD disk in the machine, the package +will refuse to install, as I did not try to write any logic to sort +file systems in SSD and non-SSD file systems.
+ +I consider the package a draft, as I am a bit unsure how to best +set up Debian Wheezy with an SSD. It is adjusted to my use case, +where I set up the machine with one large encrypted partition (in +addition to /boot), put LVM on top of this and set up partitions on +top of this again. See the README file in the package source for the +references I used to pick the settings. At the moment these +parameters are tuned:
-field::astronomy
- +-
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- Set up cryptsetup to pass TRIM commands to the physical disk + (adding discard to /etc/crypttab) -
- Set up LVM to pass on TRIM commands to the underlying device (in + this case a cryptsetup partition) by changing issue_discards from + 0 to 1 in /etc/lvm/lvm.conf. -
- Set relatime as a file system option for ext3 and ext4 file + systems. -
- Tell swap to use TRIM commands by adding 'discard' to + /etc/fstab. -
- Change I/O scheduler from cfq to deadline using a udev rule. -
- Run fstrim on every ext3 and ext4 file system every night (from + cron.daily). -
- Adjust sysctl values vm.swappiness to 1 and vm.vfs_cache_pressure + to 50 to reduce the kernel eagerness to swap out processes. -
field::biology:structural
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field::electronics
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field::geography
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-[geomview]
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field::physics
- +field::TODO
- +In total, 61 applications. 3 of them lacked screen shots on -screenshot.debian.net. If -you know of some packages we should install by default, please let us -know on IRC, #debian-edu -on irc.debian.org, or our -mailing list -debian-edu@.
+During installation, I cancelled the part where the installer fill +the disk with random data, as this would kill the SSD performance for +little gain. My goal with the encrypted file system is to ensure +those stealing my laptop end up with a brick and not a working +computer. I have no hope in keeping the really resourceful people +from getting the data on the disk (see +XKCD #538 for an explanation why). +Thus I concluded that adding the discard option to crypttab is the +right thing to do.
+ +I considered using the noop I/O scheduler, as several recommended +it for SSD, but others recommended deadline and a benchmark I found +indicated that deadline might be better for interactive use.
+ +I also considered using the 'discard' file system option for ext3 +and ext4, but read that it would give a performance hit ever time a +file is removed, and thought it best to that that slowdown once a day +instead of during my work.
+ +My package do not set up tmpfs on /var/run, /var/lock and /tmp, as +this is already done by Debian Edu.
+ +I have not yet started on the user space tuning. I expect +iceweasel need some tuning, and perhaps other applications too, but +have not yet had time to investigate those parts.
+ +The package should work on Ubuntu too, but I have not yet tested it +there.
+ +As for the answer to the question in the title of this blog post, +as far as I know, the only solution I know about is to replace the +disk. It might be possible to flash it with Intel firmware instead of +the Lenovo firmware. But I have not tried and did not want to do so +without approval from Lenovo as I wanted to keep the warranty on the +disk until a solution was found and they wanted the broken disks +back.
Two days ago, I asked -how -I could install Linux on a Packard Bell EasyNote LV computer -preinstalled with Windows 8. I found a solution, but am horrified -with the obstacles put in the way of Linux users on a laptop with UEFI -and Windows 8.
- -I never found out if the cause of my problems were the use of UEFI -secure booting or fast boot. I suspect fast boot was the problem, -causing the firmware to boot directly from HD without considering any -key presses and alternative devices, but do not know UEFI settings -enough to tell.
- -There is no way to install Linux on the machine in question without -opening the box and disconnecting the hard drive! This is as far as I -can tell, the only way to get access to the firmware setup menu -without accepting the Windows 8 license agreement. I am told (and -found description on how to) that it is possible to configure the -firmware setup once booted into Windows 8. But as I believe the terms -of that agreement are completely unacceptable, accepting the license -was never an alternative. I do not enter agreements I do not intend -to follow.
- -I feared I had to return the laptops and ask for a refund, and -waste many hours on this, but luckily there was a way to get it to -work. But I would not recommend it to anyone planning to run Linux on -it, and I have become sceptical to Windows 8 certified laptops. Is -this the way Linux will be forced out of the market place, by making -it close to impossible for "normal" users to install Linux without -accepting the Microsoft Windows license terms? Or at least not -without risking to loose the warranty?
- -I've updated the -Linux Laptop -wiki page for Packard Bell EasyNote LV, to ensure the next person -do not have to struggle as much as I did to get Linux into the -machine.
- -Thanks to Bob Rosbag, Florian Weimer, Philipp Kern, Ben Hutching, -Michael Tokarev and others for feedback and ideas.
+ +A few days ago, I wrote about +the +problems I experienced with my new X230 and its SSD disk, which +was dying during installation because it is unable to cope with +sustained write. My supplier is in contact with +Lenovo, and they wanted to send a +replacement disk to try to fix the problem. They decided to send an +identical model, so my hopes for a permanent fix was slim.
+ +Anyway, today I got the replacement disk and tried to install +Debian Edu Wheezy with encrypted disk on it. The new disk have the +same firmware version as the original. This time my hope raised +slightly as the installation progressed, as the original disk used to +die after 4-7% of the disk was written to, while this time it kept +going past 10%, 20%, 40% and even past 50%. But around 60%, the disk +died again and I was back on square one. I still do not have a new +laptop with a disk I can trust. I can not live with a disk that might +lock up when I download a new +Debian Edu / Skolelinux ISO or +other large files. I look forward to hearing from my supplier with +the next proposal from Lenovo.
+ +The original disk is marked Intel SSD 520 Series 180 GB, +11S0C38722Z1ZNME35X1TR, ISN: CVCV321407HB180EGN, SA: G57560302, FW: +LF1i, 29MAY2013, PBA: G39779-300, LBA 351,651,888, LI P/N: 0C38722, +Pb-free 2LI, LC P/N: 16-200366, WWN: 55CD2E40002756C4, Model: +SSDSC2BW180A3L 2.5" 6Gb/s SATA SSD 180G 5V 1A, ASM P/N 0C38732, FRU +P/N 45N8295, P0C38732.
+ +The replacement disk is marked Intel SSD 520 Series 180 GB, +11S0C38722Z1ZNDE34N0L0, ISN: CVCV315306RK180EGN, SA: G57560-302, FW: +LF1i, 22APR2013, PBA: G39779-300, LBA 351,651,888, LI P/N: 0C38722, +Pb-free 2LI, LC P/N: 16-200366, WWN: 55CD2E40000AB69E, Model: +SSDSC2BW180A3L 2.5" 6Gb/s SATA SSD 180G 5V 1A, ASM P/N 0C38732, FRU +P/N 45N8295, P0C38732.
+ +The only difference is in the first number (serial number?), ISN, +SA, date and WNPP values. Mentioning all the details here in case +someone is able to use the information to find a way to identify the +failing disk among working ones (if any such working disk actually +exist).