[fedora-arm] How do I enable mounting /usr as a separate (read-only) partition on Fedora 17?

[Alex Villací­s Lasso]

El 20/11/13 18:04, Adrian escribió:
> Why use armv5tel redundant soft float when pidora armv6hl hardfloat is the go at the moment ?
>
> Adrian ... vk4tux
>
>
This project does not (only) run on raspberry pi. The board is a DaVinci-based one that supports armv5tel only.
> -----Original Message-----
> *From*: Alex Villací­s Lasso <a_villacis at palosanto.com <mailto:Alex%20%3d%3fISO-8859-1%3fQ%3fVillac%3dED%3dADs%3f%3d%20Lasso%20%3ca_villacis at palosanto.com%3e>>
> *To*: arm at lists.fedoraproject.org <mailto:arm at lists.fedoraproject.org>
> *Subject*: [fedora-arm] How do I enable mounting /usr as a separate (read-only) partition on Fedora 17?
> *Date*: Wed, 20 Nov 2013 16:30:13 -0500
>
> I have this ARM project for which I have installed Fedora 17 armv5tel on a SD card. The installation is one small FAT partition where the kernel and initramfs files can be placed, and one EXT3 partition where the root filesystem lives. This mode of
> operation boots correctly.
>
> Now I want to move the contents of /usr to a separate partition, and lock this partition read-only. After some investigation on how to coax the bootloader to load the initramfs, I managed to boot the kernel with the initramfs, only to find out that it
> wants to run /sbin/init . The /sbin is a symlink that should end up in /usr, but I specify the root filesystem as the rootfs in the kernel commandline, and the initramfs has not mounted /usr to resolve all of the symlinks, even after specifying the device
> in /etc/fstab. After some googling, it seems that the /usr separation was not fully implemented in Fedora 17, but was completed in Fedora 18.
>
> What do I have to do to enable the /usr separation in Fedora 17? I do not really want to port the entire project to Fedora 18, and I think it will be easier to just grab the relevant packages or patches from Fedora 18, recompile for Fedora 17, install, and
> then separate the filesystem as indicated. Is this doable? What packages should I pick from Fedora 18? I know that Fedora 17 is EOL, and I do not expect any updated packages for this, but I can recompile packages.
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