On Mon, August 27, 2007 01:44, Douglas A. Tutty wrote: > On Sun, Aug 26, 2007 at 05:38:27PM +0100, Richard Lyons wrote: >> [...] >> I've just read the lvm howto and other stuff on 'Changing the Size of >> the LVM-Partitions' -- and I don't like the sound of it a bit. Lots >> of talk of "if something goes wrong", and very complicated. I think >> I'll go back to the old way as soon as I have energy to do the moving. >> There is room on my second hard drive to copy the whole system off, >> repartition the first drive, and copy it back. With boot on a non-LVM >> partition, I assume it will all reboot quite happily afterwards. (Mental >> note: I must remember to remove everything lvm from /etc/rc*.d. before >> rebooting) >> > > Here there be dragons. Remember that your initrd will be set up to > start your LVM system so that it can find the root device for the > kernel. Since I've never had to tweak an initramfs it could get > interesting. So with / on LVM, lvm will be started before init even > gets a chance to run anything in /etc/rc*.d. >
You are right of course. I'll have to re-install from scratch in order to get a working initrd. And then copy back the /home and /usr partitions and most of the / partition... Or just maybe there is a rescue boot on the netinstall disk which just maybe will allow me to create a new initrd... > As for LVM being complicated and warnings of "if something goes wrong", > remember that you are dealing with your data on disk. A HOWTO for any > regular partitioner would also be full of warnings. Be sober and well > rested before you touch your partitions of whatever stripe (so to > speak). The other thing to remember is that things are layered. You > have files in filesystems on logical partitions in volume groups made up > of one or more physical volumes. The concept can be complicated but the > design of those concepts is well tested in real-life use on many OSs. > Linux implimentation of those concepts is somewhat newer but it does > work. > > However, I do agree that from the user/admin's perspective it is > complicated. It offers many advantages to compensate for that. The > most obvious is that you do have at your fingertips the ability to tweak > the sizes of your partitions which you would not have with normal > partitions. I've always found it easy and quick with fdisk and parted. But maybe the new way is easier than it looks in the documents. Perhaps I should try first, just for the experience. Thanks. -- richard -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
