Gentoo Archives: gentoo-dev

From: Marc Schiffbauer <mschiff@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] /usr vs. initramfs redux
Date: Fri, 05 Aug 2011 10:17:41
Message-Id: 20110805101651.GA18949@lisa.schiffbauer.lan
In Reply to: [gentoo-dev] /usr vs. initramfs redux by "Robin H. Johnson"
* Robin H. Johnson schrieb am 05.08.11 um 02:46 Uhr:
> That leaves the only reasonable solution as #2. In terms of minimal > impact, I propose that we offer users with a static system an absolutely > minimal initramfs, that _just_ mounts the required directories. No > modules, no LVM, no MD, no crypto etc - if you want that functionality, > go and use genkernel or dracut. If your fstab contains a line like: > /dev/sdXN /usr ... > Then this initramfs is for you. > > The minimal initramfs would do the following. > > 1. Mount devtmpfs/sysfs/procfs as needed to access devices. > 2. Mount real_root to /newroot > 3. Read /newroot/etc/initramfs.mount and /newroot/etc/fstab > 4.1. If /newroot/etc/initramfs.mount does not exist > Assume it contains only: /usr /var > 5. Mount the combined items from said files > 6. pivot_root. >
That sounds like a good compromise to me! Another thing to consider: /etc/init.d/localmount should check whats already mounted and leave that out. But it will act as fallback if the minimal initramfs fails to mount /usr or /var for any reason. That way anybody migrating to that "minitramfs" will not risc an unbootable system. -Marc -- 8AAC 5F46 83B4 DB70 8317 3723 296C 6CCA 35A6 4134


Subject Author
Re: [gentoo-dev] /usr vs. initramfs redux Rich Freeman <rich0@g.o>