udevadm slow boot

usr345 · 04-19-2013, 02:21 AM

After I upgraded from Slackware 13.70 to 14.0, when the machine is booting, it takes 10 seconds to execute this line:

Quote:

/sbin/udevadm trigger --action=add

I added --verbose statement to it, and found, that it is slow on this command:

Quote:

/sys/devices/virtual/block/md0

I googled, and found, that this is often mentioned together with RAID. But I don't have RAID.

What does this device stand for? Is it possible to make it boot faster?

Sigg3.net · 04-27-2013, 09:38 AM

Yup! If you don't have raid add
append="raid=noautodetect"
to your /etc/lilo.conf, run lilo and reboot.

Code:

Example:
# Linux bootable partition config begins
image = /boot/vmlinuz-huge-smp-3.2.13-smp
  root = /dev/sda3
  label = Slackware
  append = "raid=noautodetect"
  read-only
# Linux bootable partition config ends

usr345 · 04-27-2013, 01:34 PM

Did it. But the problem persists. Any ideas, how to debug?

Sigg3.net · 04-28-2013, 02:55 AM

By the way, in dmesg output, what is the process just BEFORE initializing RAID. That could just as well be the real culprit, in my experience.