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LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
PostgreSQL 9.3 beta: Federated databases and more
LWN.net Weekly Edition for May 9, 2013
(Nearly) full tickless operation in 3.10
I quite enjoy doing kernel upgrades with GRUB. If you've never seen a system with a blank screen except for "LI" then you've not been using Linux very long!
LPC: Booting and systemd
Posted Sep 15, 2011 15:02 UTC (Thu) by epa (subscriber, #39769)
A simple command interpreter built into the kernel would also be a great help, e.g. when it can't find the root filesystem or /sbin/init.
Posted Sep 15, 2011 15:12 UTC (Thu) by rfunk (subscriber, #4054)
Posted Sep 16, 2011 14:38 UTC (Fri) by Cato (subscriber, #7643)
Posted Sep 19, 2011 9:33 UTC (Mon) by epa (subscriber, #39769)
Earlier Fedora releases gave about a hundred megs to /boot but then cannot be upgraded to the latest Fedora version, since the upgrade process needs to put a disk image in there too. (There is a way to download the disk image over the network but for me it always hangs.)
Posted Sep 20, 2011 9:56 UTC (Tue) by Cato (subscriber, #7643)
Posted Sep 20, 2011 16:06 UTC (Tue) by mathstuf (subscriber, #69389)
I actually did do a yum upgrade (from F10 to F11 IIRC) on the machine. The RPMs fit, but not with the upgrade going. I ended up having to SIGSTOP yum, delete cached RPMs that had finished installing for disk space, and the SIGCONT yum again. Not something I plan on doing again. Especially during class.
Posted Sep 15, 2011 18:06 UTC (Thu) by dlang (✭ supporter ✭, #313)
yes, it's easier to trigger lilo problems, but when grub doesn't just 'do the right thing', figuring out how to fix it seems to be much harder.
Posted Sep 16, 2011 17:19 UTC (Fri) by jmorris42 (subscriber, #2203)
Well what is old is now new again. GRUB2 requires running an installer after any change, such as installing a newly built kernel. Forget that step and kaboom! Well you get the old config with no mention of the newly installed kernel if you weren't so unwise as to get rid of the current running kernel before rebooting but we still went backward with GRUB2.
Posted Sep 16, 2011 17:34 UTC (Fri) by jrn (subscriber, #64214)
Forget that step and you have to type the name of the kernel by hand, you mean, right?
Posted Sep 22, 2011 22:29 UTC (Thu) by Wol (guest, #4433)
Many mobos do not do proper USB->PS2 emulation (some don't do it at all) so if all you have is a usb keyboard, you're stuffed. You can't tell grub which option you want so you get the choice of default, default or default. Tough luck if your upgrade broke but you made that the default in order to test it ...
For example, my mobo is broken some of the time - kernel upgrades are a pain because I never know whether my keyboard is going to work with grub or not :-(
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