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Kazimieras Aliulis
Asked: 2009-05-29 10:53:06 +0800 CST

udev makes /dev/null unwritable?

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Had two Debian stable (as of 2009-05-28) servers suddenly broken, when /dev/null became unwritable. It appeared that when I restart udev it sometimes (randomly) changes /dev/null permissions sometimes making it unwritable. Server configuration is pretty standard and no udev rules are changed. Does anyone know what kind of a bug this can be?

linux debian udev

3 Answers

  1. Best Answer

    I've had this many times, and often it was because the static files were bad.

    You might want to try:

    ls -l /dev/.static/dev/null

    To see what the boot-time permissions will be, and:

    chmod a+rw /dev/.static/dev/null

    To set them

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  2. I found this bug on Debian's website, which was merged with this one. However, they do seem to be older than the issue you've just found.

    Also, from the Debian wiki on udev, you may be able to look at / fix the init scripts for it.

    From a related discussion on Ubuntu, it appears it's been fixed at least there.

    Not sure if those'll help/fix you problem, but maybe they're in the right direction :)

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  3. Do any of the issues here pertain to your situation?

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