Bug 511157

Summary: Udev loads too long on boot
Product: [Fedora] Fedora Reporter: Krzesimir Nowak <qdlacz>
Component: udevAssignee: Harald Hoyer <harald>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 11CC: harald, sorrow.about.alice
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Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2009-07-15 02:35:37 EDT Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
udev.log none

Description Krzesimir Nowak 2009-07-13 19:07:00 EDT
Created attachment 351534 [details]

Description of problem:
After upgrading udev to version in test-updates, it loads 3 minutes. After changing kernel option from `quiet' to `udevinfo' and option in udev.conf to `info', screen is flooded with informations from udev, while it loads on boot. Informations scroll too fast to read anything.

Version-Release number of selected component (if applicable):
udev - 141-4.fc11
kernel-PAE -

How reproducible:
By booting.

Steps to Reproduce:
1. Boot.
Actual results:
Udev loads too long.

Expected results:
Udev loads quickly.

Additional info:
I'm attaching my boot.log, but it shows only the end of boot, so only a tiny part of udev informations are there. If any other info is needed, I'll try to provide it.
Comment 1 Harald Hoyer 2009-07-14 06:19:36 EDT
Can you please install udev-141-5 from:

and start with the kernel command line "udevinfo udevlog"

then you can attach the file /dev/.udev/udev.log which should contain a complete log.
Comment 2 Krzesimir Nowak 2009-07-14 08:52:25 EDT
Created attachment 351580 [details]

Packed udev.log, because unpacked weights nearly 700kb.
Comment 3 Harald Hoyer 2009-07-14 09:05:18 EDT
It might be, that this takes so long.. Can you try it?
# time create_floppy_devices -c -t  -m 2 -M 0640 -G floppy /dev/fd0

Do you have your floppy enabled in the BIOS and no real floppy drive?
Comment 4 Harald Hoyer 2009-07-14 09:09:44 EDT
ah, should be:

# time /lib/udev/create_floppy_devices -c -t  -m 2 -M 0640 -G floppy /dev/fd0
Comment 5 Krzesimir Nowak 2009-07-14 09:49:54 EDT
Corrected command was also wrong - `-t' didn't have an argument. Anyway, command executed quickly:

[kudi@fiodor ~]$ time /lib/udev/create_floppy_devices -c -t 2 -m 2 -M 0640 -G gloppy /dev/fd0

real	0m0.154s
user	0m0.056s
sys	0m0.010s

My computer is laptop - Dell Latitude C610 (probably about 6 years old). I don't have any floppy drives installed and BIOS also tells me so.
Comment 6 Harald Hoyer 2009-07-14 10:25:44 EDT
Hmm, it seems that your BIOS reports a floppy...

[194] util_run_program: '/sbin/modprobe -b acpi:PNP0700:'

You can check it with:
# find /sys -name modalias | xargs grep -l PNP0700

Workaround for your buggy BIOS:

# echo "blacklist floppy" > /etc/modprobe.d/blacklist-floppy.conf
Comment 7 Harald Hoyer 2009-07-14 10:26:07 EDT
Hope this resolves the issue.
Comment 8 Krzesimir Nowak 2009-07-14 13:05:51 EDT
Yes, now it loads quickly as it should. Thanks for help!

(Strange that udev was sensitive to my buggy BIOS now, not earlier.)
Comment 9 Harald Hoyer 2009-07-15 02:35:37 EDT
well, I fixed floppy autoloading in the new version :)