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Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs

Cross-posted to 4 groups.

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On Wed, 2015-11-11 at 18:46 -0600, Vagrant Cascadian wrote:
> On 2014-09-30, Ben Hutchings wrote:
> > On Tue, 2014-09-30 at 08:19 +0100, Ian Campbell wrote:
> > > On Fri, 2014-09-26 at 00:08 +0100, Ben Hutchings wrote:
> > > > However, at the moment initramfs-tools won't include PHY drivers
> > > > even in
> > > > that configuration.
> > > 
> > > I spent some time last week hunting for a sysfs link between a device
> > > and the phys which it is using, without success. Do you have any
> > > ideas?
> > 
> > I suspect they're not visible there yet.
> > 
> > I think you could include all PHY drivers (drivers/phy and
> > drivers/usb/phy) when MODULES=most, and only the currently loaded
> > drivers if MODULES=dep.
> > 
> > USB non-generic PHY drivers don't appear in the device model at all
> > (ugh!) so in the MODULES=dep case you may have to bodge it by checking
> > for modules with names beginning with "phy-" (check both /sys/module
> > and /lib/modules/$(uname -r)/modules.builtin).
> 
> Would definitely like to see this, with a recent install on a Wandboard
> Dual with a USB2 sata disk for the rootfs. It installed fine with
> jessie's debian-installer, but failed on initial boot.
> 
> I worked around it by adding to /etc/initramfs-tools/modules:
> 
>   ci_hdrc_imx
>   phy_mxs_usb
> 
> I haven't yet verified if only adding "phy_mxs_usb" instead of both will
> work.
> 
> Had a similar problem with an Odroid-XU4 install (which isn't yet
> supported by debian-installer), and worked around it similarly, although
> haven't narrowed down exactly which modules are needed, though I
> suspect one or both of:
> 
>   phy_exynos_usb2
>   phy_exynos5_usbdrd
> 
> 
> Something that pulls in all the phy-* modules would likely fix the issue
> in a generic way, rather than playing whack-a-mole with various phy
> types.

I think Ben essentially did this in #762042[0], which ends up adding any
phy-* which are currently loaded to the initramfs. That change appears to
be in v0.119 while Jessie has v0.120 so perhaps something else is going on.

ci-* isn't covered by this logic, so that might be it in the first case.
What is ci-*?

Ian.

[0] 6ba2e937271770576fb88f4e16cb5adb3094517b in intiramfs-tools.git

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Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Vagrant Cascadian <vagrant@debian.org> - 2015-11-12 02:00 +0100
  Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Ian Campbell <ijc@hellion.org.uk> - 2015-11-12 11:00 +0100
    Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Ben Hutchings <ben@decadent.org.uk> - 2016-01-25 16:30 +0100
      Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Ben Hutchings <ben@decadent.org.uk> - 2016-02-04 17:00 +0100
        Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Vagrant Cascadian <vagrant@debian.org> - 2016-02-24 23:40 +0100
          Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Vagrant Cascadian <vagrant@debian.org> - 2016-02-25 00:10 +0100
            Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Rick Thomas <rbthomas@pobox.com> - 2016-03-04 19:40 +0100
              Bug#762634: initramfs-tools: [armhf] mounting rootfs on USB disk fails / some USB host controller drivers missing in initramfs Ben Hutchings <ben@decadent.org.uk> - 2016-04-17 02:30 +0200

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