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On Sun, Mar 11, 2012 at 12:49:11AM -0600, Ryan Hill wrote: |
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> On Sat, 10 Mar 2012 20:27:06 -0600 |
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> William Hubbs <williamh@g.o> wrote: |
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> |
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> > An initramfs which does this is created by >=sys-kernel/genkernel-3.4.25 or |
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> > >=sys-kernel/dracut-017-r1. If you do not want to use these tools, be |
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> > sure any initramfs you create pre-mounts /usr. |
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> |
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> We should really have some documentation on how to create a minimal initramfs |
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> that mounts /usr (if we don't already, I haven't looked). I've never needed |
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> one until now and don't have the foggiest idea how it's done. I can't be the |
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> only one. |
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The quickest initramfs, assuming that ALL kernel modules you need to |
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boot are already compiled into your kernel: |
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genkernel --install --no-ramdisk-modules initramfs |
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|
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Plus optionally, If you know you don't need any of these, include this |
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to make it really get much smaller: |
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--no-lvm --no-mdadm --no-dmraid --no-multipath --no-iscsi --no-disklabel |
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--no-firmware --no-zfs --no-gpg --no-luks |
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|
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--disklabel is the one that most users will probably need, if they use |
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LABEL= or UUID= arguments in your fstab. |
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|
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That will give you an initramfs of scripts + busybox. |
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On my box, it's about 724KiB. |
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|
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-- |
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Robin Hugh Johnson |
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Gentoo Linux: Developer, Trustee & Infrastructure Lead |
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E-Mail : robbat2@g.o |
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GnuPG FP : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85 |
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