[IAEP] Restoring journals on newer versions of Sugar
Answering your question on IRC: christophd hi all christophd I've got a question related to Journal backup/restore: is it realistically possible to get Journal entries created on 8.2 to 11.1.2 with the help of dsd_'s scripts or other ways? Yes. If you make a tarball from the contents of ~/.sugar/default/datastore created on an older Sugar release, then unpack it in the same location on a newer release, the datastore will automatically upgrade it to the current format. In fact, the jorunal backup/restore GUI in Dextrose [1] is a distant cousin of Daniel Drake's scripts. It also performs backups/restores to the schoolserver using rsync, which is what most users do across upgrades. Getting all the little details right wasn't easy, we had to do a lot of testing in various scenarios, and there are still a few corner cases that we haven't taken care of. For example, if the next version of the OS grows bigger, restoring a very large datastore would fail. The next step would be allowing users to browse remote datastores on the schoolserver and restore individual files. This isn't as hard as it may sound, because the on-disk format of the schoolserver is just an rsync of a regular datastore, and the user has full ssh access to it, so it would be easy to access it with FISH [2]. [1] http://wiki.sugarlabs.org/go/Features/Backup_and_Restore [2] http://en.wikipedia.org/wiki/Files_transferred_over_shell_protocol -- Bernie Innocenti Sugar Labs Infrastructure Team http://wiki.sugarlabs.org/go/Infrastructure_Team ___ IAEP -- It's An Education Project (not a laptop project!) IAEP@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/iaep
[IAEP] housetree.sugarlabs.org: planned maintenance downtime, Wed Jun 1 19:30 UTC
To celebrate yesterday's outages, today Dogi and I will also take down housetree to install two new hard drives. With the occasion, we'll also perform an operating system upgrade. The following public services will be affected: activitycentral.com bazaar.sugarlabs.org cas.sugarlabs.org chas.sugarlabs.org git.sugarlabs.org jabber.sugarlabs.org jita.sugarlabs.org meeting.sugarlabs.org packages.sugarlabs.org serendipity.sugarlabs.org sweets.sugarlabs.org The downtime is projected to last about 2 optimistic hours. To compute real-world estimates, multiply the given figure by 2 and switch to the next higher unit of measure. -- Bernie Innocenti Sugar Labs Infrastructure Team http://wiki.sugarlabs.org/go/Infrastructure_Team ___ IAEP -- It's An Education Project (not a laptop project!) IAEP@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/iaep
[IAEP] Getting learning content to learners - some questions
I was wondering how open educational resources (OER) find their way into the minds of learners. I have some capacity to be able to help, but I would like to learn more. As background, I've recently begun contracting full time to the Open Knowledge Foundation[0]. One of the projects that the organisation runs is Open Text Book[1]. The project is mostly dormant. I would like to awaken it. However, there are many ebook repositories in existence. I would like advice on the best way to help. Some questions: - Do educators use digital content from non-traditional sources? - What is missing for learners and teachers? - Are things easy enough for people creating learning material to get it into the hands of others? Thanks all Tim McNamara Professional \\ paperlessprojects.com Personal \\ @timClicks http://twitter.com/timClicks | timmcnamara.co.nz [0] http://okfn.org [1] http://www.opentextbook.org/repository/ ___ IAEP -- It's An Education Project (not a laptop project!) IAEP@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/iaep
Re: [IAEP] Restoring journals on newer versions of Sugar
On Wed, 2011-06-01 at 17:07 +0200, Christoph Derndorfer wrote: Just for the record, the process would be (1) to tar the Journal on every XO (2) copy it over to a USB drive (3) reflash the XOs (4) untar the Journal backup from the USB drive back to ~/.sugar/default/datastore Right? The main reason why I'm asking is that I seem to remember Martin Langhoff at some point mentioning that restoring the Journal while Sugar was running could prove to be an issue. (Unfortunately I can't find the thread in question at the moment.) Indeed, on restore, the datastore could mess up the index while you're still unpacking the tarball. You need to insert these extra steps: (3b) killall datastore (5) restart Sugar (ctrl-alt-backspace saves time) Another clever possibility is deleting the index_clean flag from the datastore directory just before step (5)... This will force the datastore to reindex everything the next time, which helps recover files lost due to bugs in older versions of the datastore. In Dextrose we also added a Repair Journal function which lets the user force an index rebuild. It's crude, but we couldn't be 100% sure that we had caught all the odd ways in which journal objects could go lost when the filesystem fills up or due to crashes. -- Bernie Innocenti Sugar Labs Infrastructure Team http://wiki.sugarlabs.org/go/Infrastructure_Team ___ IAEP -- It's An Education Project (not a laptop project!) IAEP@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/iaep
