Arch Linux

Mister_Magotchi

Member

Registered: 2012-06-08

Posts: 13

Incorrect Permissions on Some /dev/ Nodes After Upgrade on OpenVZ

This is a duplicate of the issue in https://bbs.archlinux.org/viewtopic.php?id=142816 , but it was marked solved, so I assume any responses to it get ignored.

I'm having the same issue as the OP, but as falconindy said, the fix used isn't really proper.

I'm using a VPS (OpenVZ), and the same happened to me after updating today (many parts of /dev lost the proper permissions, including null, zero, full, random, and urandom).  I also don't have any files in /etc/udev/rules.d (although /usr/lib/udev/rules.d has a bunch of stuff).

Could someone please help point me in the right direction on finding the culprit for the change in permissions?

Also, the problem exists on two different VPS, but on a physical server I also run, the permissions are correct.

Any ideas would be appreciated.  I'm still struggling with this.

Lucky

Member

From: /dev/random

Registered: 2009-08-07

Posts: 28

Re: Incorrect Permissions on Some /dev/ Nodes After Upgrade on OpenVZ

I talkt with falconindy, because i got the same problem so there is the fix (workaround). I know falconindy don't like override permission by udev, but maybe OpenVZ Container need this. If i had time, maybe i will look deeper in it.

Problem was upgrade from udev v182-4 to systemd-tools v184-2, because of removing the following line.

cat /etc/udev/rules.d/50-fix-permission.rules

# Thomas Lucke (Lucky) archlinux@builds.lucky.li
#
# In a OpenVZ container with enabled udev (systemd-tools), you run in some
# permission problems, because the udev rule was removed by this commit:
# http://cgit.freedesktop.org/systemd/systemd/commit/rules/50-udev-default.rules?id=378f2e074e38490103f999173bf717a5394170f8

# mem
SUBSYSTEM=="mem", KERNEL=="null|zero|full|random|urandom", MODE="0666"

btw. please post there if you get problems, because i don't follow the forum.
https://aur.archlinux.org/packages.php?ID=57949

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[AURpkgs] | [GITrepo]

Mister_Magotchi

Member

Registered: 2012-06-08

Posts: 13

Re: Incorrect Permissions on Some /dev/ Nodes After Upgrade on OpenVZ

Are you suggesting that I make /etc/udev/rules.d/50-fix-permission.rules with that line, or that I install your custom kernel AUR package?

Lucky

Member

From: /dev/random

Registered: 2009-08-07

Posts: 28

Re: Incorrect Permissions on Some /dev/ Nodes After Upgrade on OpenVZ

I run Archlinux as HN with this OpenVZ Kernel and also as OpenVZ Containers, so i run in many problems. (Host & Guest)

Your Problem schould be fixed with the udev rule, you don't need the kernel.

But if you run in other container problems feel free to post @ AUR page, maybe there i could help you (you can also post a link to a forum thread with the problem).

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[AURpkgs] | [GITrepo]

Mister_Magotchi

Member

Registered: 2012-06-08

Posts: 13

Re: Incorrect Permissions on Some /dev/ Nodes After Upgrade on OpenVZ

That fixed it.  Thanks for the help.