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On Sat, May 12, 2012 at 10:54 PM, <kwkhui@××××.net> wrote: |
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> On Sat, 12 May 2012 19:54:24 -0500 |
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> Canek Peláez Valdés <caneko@×××××.com> wrote: |
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> |
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>> On Sat, May 12, 2012 at 7:43 PM, Alex Schuster <wonko@×××××××××.org> |
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>> wrote: |
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>> > Hi there! |
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>> > |
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>> > I'm using the new udev with a separate /usr partition. |
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>> |
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>> How do you create your initramfs? The new udev (>= 182, I believe) |
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>> requires the use of an initramfs if you have a separated /usr. |
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>> |
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>> > It was encrypted, |
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>> > and it seems there is no solution yet for this. |
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>> |
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>> dracut has two modules, crypt and crypt-gpg, that maybe do what you |
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>> are needing. |
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>> |
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>> > so I moved it over to an |
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>> > unencrypted volume - no problem, /usr is one partition where |
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>> > encryption does not make that much sense anyway. Works, but after |
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>> > an unclean shutdown (reading files in /proc/<pid>/ was not a good |
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>> > idea) /usr wants to be fsck'ed. But it is already mounted at that |
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>> > stage. |
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>> |
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>> That's the reason you need an initramfs. |
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> |
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> No, that's the reason you want the filesystem's fsck to be included in |
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> the initramfs. |
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> |
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>> > The boot process just continues, but I wonder what one should do to |
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>> > make the fsck run. Except for using a live cd. |
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>> |
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>> With an initramfs. |
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> |
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> Using initramfs is necessary but itself not sufficient. |
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> |
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> One can create an initramfs (from scratch) that does nothing but |
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> mount /usr (with only busybox and a few /dev nodes, plus whatever other |
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> tools needed to find /usr, viz. lvm, cryptsetup and friends, assuming |
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> the necessary drivers are built in the kernel and not as modules --- |
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> see e.g. the old gentoo wiki at |
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> http://www.gentoo-wiki.info/HOWTO_Custom_Initramfs_From_Scratch ). |
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> |
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> The initramfs needs to have the relevant fsck tools (plus dependencies) |
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> if it was to perform fsck. |
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|
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Dracut (and I believe genkernel, but I don't use it, so I'm not sure) |
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does all of that (and more, if so desired) for you. |
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|
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Regards. |
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-- |
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Canek Peláez Valdés |
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Posgrado en Ciencia e Ingeniería de la Computación |
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Universidad Nacional Autónoma de México |
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