On Tue, 2013-01-29 at 15:55 +0000, Bryn M. Reeves wrote: > On 01/29/2013 03:45 PM, Simo Sorce wrote: > > I guess it was in the short while I switched to Ubuntu, because from my > > memory I used to change hardware on my machines and always be extremely > > happy at how Linux was resilient to hardware changes between boots and > > automatically detected new hardware without the dreaded rescue mode. > > I believe mkinitrd behaved this way before there was an Ubuntu so I'd be > surprised (at least RHL7/8/9, probably earlier: I was just a user until > RHL7 days). > > The thing is that stuff in the initramfs only matters if you need it for > booting. > > Added a new sound card? Great! We'll get to it when we have a root fs. > New network card? Well, as long as you're not trying to boot an iSCSI > volume over it that shouldn't be a problem either etc. > > > Yes but is /boot space still an issue these days ? > > Hard to say; it isn't for me but that's because I always make them large > enough for my expected uses. > > > Do we still need a separate /boot at all ? > > Yes afaik. There are still some device types that are problematic > without it (do the boot loaders support native LUKS/dmcrypt now?). > > > Disks are huge these days. > > And speed is still an issue with modern SSDs ? > > I don't have any so I can't tell you but it should be easy enough to > test. I wouldn't expect a massive improvement though. > > > This are the 2 cases I have in mind: > > 1. Machine breaks -> change motherboard -> boot breaks > > This should not break your boot unless the storage adapters are wildly > different (most things just use AHCI and are happy now). > > > 2. Swap disk to other laptop -> boot breaks > > Again, unless you have very different storage controllers this will not > break. > > I really don't want or need every FC HBA kernel module, firmware bin > file or other junk in my laptop initramfs "just in case" I happen to > swap the disk to a laptop with built-in fibre-channel :-). > > If I was moving a disk to such radically different hardware I'd be able > to prep it in advance (and I think that's 'advanced' enough that it's > reasonable to expect a little user knowledge). If we can guarantee all standard 'laptop/desktop' grade hardware needed for booting is in the custom image I have no complaints really. I do not see the need for exotic hardware support either, but when you automate these things it is easier to exclude drivers that turn out to be necessary for boot on slightly different hardware. But do we have that guarantee ? Simo. -- Simo Sorce * Red Hat, Inc * New York -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
