68653 – stop mounting ramfs on /dev! (udev system)

Bug 68653 - stop mounting ramfs on /dev! (udev system)

Summary: stop mounting ramfs on /dev! (udev system)

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] baselayout (show other bugs)
Hardware:	All Linux

Importance:	High critical
Assignee:	Gentoo's Team for Core System packages

URL:
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Depends on:
Blocks:

Reported:	2004-10-23 11:43 UTC by Grzegorz Kulewski
Modified:	2004-10-25 06:00 UTC (History)
CC List:	1 user (show)

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Package list:
Runtime testing required:	---

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Description Grzegorz Kulewski 2004-10-23 11:43:48 UTC

I have udev system and Gentoo startup scripts are mounting ramfs on /dev. This is very bad idea:

dd if=/dev/sda1 of=/dev/sda17

will lock hard your sysem because of oom because of this stupid typo (/dev/sda17 instead of /dev/evms/sda17 - kernel does not have enought minor numbers for partitions over 15 on SCSI disks, I am using evms instead)!!! 
It is possible - I triggered it 3 time yesterday before I realized what is wrong.

I think /dev should be very size-limited tmpfs (32 MB will be more than anybody will ever need).


Reproducible: Always
Steps to Reproduce:

Comment 1 SpanKY gentoo-dev

2004-10-23 22:14:58 UTC

done deal, changed rc to mount tmpfs insetad of ramfs

Comment 2 Grant Goodyear (RETIRED) gentoo-dev

2004-10-24 07:16:06 UTC

Isn't tmpfs vs ramfs set in /etc/conf.d/rc.conf (if svcmount is set at all)?

Comment 3 SpanKY gentoo-dev

2004-10-25 06:00:39 UTC

svcmount != udev mounting of /dev

it was hardcoded to ramfs, now it's hardcoded to tmpfs ;)