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I have a problem with my Ubuntu VPS and the provider is unable and/or unwilling to help. The problem is that they supposedly support disk quotas, but it is not working on my server. repquota -a complains that /dev/vzfs does not exist, even though / is mounted on it.

After investigating the problem for hours, I found this post.

The vzquota script looks exactly like the one on my server except for the line that creates the device node, which does not exist in my version:

[ -e "/dev/vzfs" ] || mknod /dev/vzfs b 0 115

Could this be the solution? What would be the correct numbers for mknod to create the vzfs device? Can I get them from my provider? Or should they have been dynamically assigned by the virtualization software?

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After some more investigating, I realized I could get the correct device number via stat --format '%D' / and use that to create the missing node via mknod /dev/vzfs b <major number from stat output> <minor number from stat output>. And guess what, it works!!! I hope this helps others as well.

It's a shame that the provider wasn't able to tell me that. They told me I should switch to Debian for crying out loud! Well, if you want something done right, you have to do it yourself, I guess.

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Worked for me, too.

Only thing is, stat --format '%D' / gave me only one hex number. (actually used %d to retrieve the dec number.)

As I got no MINOR number, I assumed a 0 and therefore did

 mknod /dev/vzfs b 43 0

which did the job and now quotas are working :)

(Ubuntu 16.04 LTS, STRATO vServer)

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  • 2b00 is technically one number, but it includes both the major and minor numbers.
    – Michael Hampton
    Jul 28, 2018 at 13:45

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