El día Wednesday, June 17, 2015 a las 11:02:03AM +0200, Oliver Grawert escribió:
> > (could you please explain a bit, how these binary diffs are produced and > > loaded into the device later, i.e. how the update works; thanks) > > i think that is described in the client section of > https://wiki.ubuntu.com/ImageBasedUpgrades Hi, Please, do all note that I have changed the Subject: to splitt away this technical question about 'binary diff update' from the other thread. I have read the above Wiki page, esp. the linked "client" page. It says among other stuff that: ... The client does the following: Grab https://server/channels.json and lookup the index for the current channel. If present, also grab the device GPG keyring. Grab https://server/<channel>/<model>/index.json Read the current version number of the device Look for the most recent version available for the specified channel on the current device Calculate the candidate upgrade paths, minimizing download size, number of reboots, and other factors (including Phased Updates) Score the candidate paths (lowest score wins), yielding the images to effect the upgrade Download any file needed up until the next reboot Validate all the files Write them to the cache partition Write the commands for upgrading the device to a file Apply the update (in-place "B" partition unpacking for snappy, reboot into recovery for touch) ... This reads for me that the logic is "change known files directly in the file system" and not some kind of "binary overlay blocks/pages in the file system partition". Do I understand this correctly? If so, this would mean: a) that if someone adds new files to the readonly partition, for example a root's crontab file, this would not harm; b) that changes in know files would be reset on update of this particulary file; c) will cause conflicts, if changed files (scripts) depend of unchanged other files, but which the user has changed; d) ... matthias -- Matthias Apitz, g...@unixarea.de, http://www.unixarea.de/ +49-170-4527211 +49-176-38902045 "Wenn der Mensch von den Umständen gebildet wird, so muß man die Umstände menschlich bilden." "Si el hombre es formado por las circunstancias entonces es necesario formar humanamente las circunstancias", Karl Marx in Die heilige Familie / La sagrada familia (MEW 2, 138) -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : ubuntu-phone@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
