On Wed, Sep 7, 2011 at 9:37 PM, David W Noon <dwn...@ntlworld.com> wrote: > On Wed, 7 Sep 2011 23:54:57 +0100, Neil Bothwick wrote about Re: > [gentoo-user] /dev/sda* missing at boot: > >> On Wed, 7 Sep 2011 13:52:22 -0400, Canek Peláez Valdés wrote: >> >> > After reading that, and other similar threads, I still don't >> > understand the benefits of a separated /usr. >> >> Putting it on a logical volume is one advantage, allowing /usr to be >> resized should the need arise. > > More than this, one can put /usr on a stripe set so that /usr/bin > and /usr/lib, two of the directories with the highest I/O traffic, can > be made more performant. But this requires LVM, RAID or some blend of > both. This, in turn, precludes that it be merged with /, unless the > initramfs grows even more to handle those extra DASD management > facilities. > > The more I think about this merge of / and /usr, the dumber I think the > idea is. As I wrote in an earlier message on this list, the initramfs > will be many times larger than the kernel itself. Indeed, my /boot > partition is only 32 MiB, and that will be too small to contain all the > extra libraries and programs to run the initramfs script.
I don't see any problem with an initramfs larger than the kernel. It will handle a lot of stuff. But if you don't want to change your /boot partition, then don't upgrade to new kernels. Change happens. >> > Mounting it read-only >> > seems the only sensible one, and then I think is better to go all >> > the way and mount / read-only. >> >> Putting /etc on a read-only filesystem seems a really bad idea. > > To say the least. It works, and it makes life easier for upstream. Which are the ones writting the code. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
