* David Härdeman <[EMAIL PROTECTED]> [20070219 22:15]: > I've attached a patch against the udev and initramfs-tools source packages > that implement the following changes...please review:
> 1) ROOTDELAY is exported by initramfs-tools and used in udev if set
> 2) Checks in udev for scsi/firewire/usb have been added and will add 10
> seconds of sleep if found
> 3) The module scsi_wait_scan will be loaded by udev if scsi is detected,
> modprobe should only return from loading that module once all scsi busses
> have been scanned (I found that module yesterday...pretty nifty band-aid
> solution to the problem, does not help with usb/firewire though).
> The only problem with the approach is that a large majority of all machines
> have usb which means that we'll slow down the boot for all those machines
> even
> though a small minority are affected.
ACK
> Thanks to Mika for the preliminary testing done so far, it has helped my
> understanding of the underlying problem...
You are welcome.
[...]
> +# Check for problematic devices
> +problem=0
> +
> +# USB / FireWire
> +if $(grep -q "usb\|ieee1394" /proc/devices); then
> + problem=1
> +fi
How about:
if $(ps | grep -q usb-storage); then
problem=1
fi
This way only boxes with usb-storage are affected by the booting
delay and not all the boxes with for example an usb input device
like an usb mouse.
I just verified my "ps...usb-storage"-code: works as intented and
booting from usb works fine then.
I'm not sure about the firewire testcase, but the
if $(grep -q "ieee1394" /proc/devices); then...
should be ok. (JFTR: I can test booting via firewire as well once,
just running out of time right now.)
[...]
> +if [ ${slumber} -gt 0 ]; then
> + log_begin_msg "Waiting for additional devices..."
The log_begin_msg call fails (don't ask me why, had no time for
further debugging and locating this bug costed me some minutes
already) and booting failed due to use of 'set -e' in the script
then. Changing the "log_begin_msg" to "echo" fixed the problem.
regards,
-mika-
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