linux-kernel - Re: [bug] /etc/profile: line 30: /dev/null: Permission denied (Was: Re: [PATCH] Remove broken by design and by implementation devtmpfs maintenance disaster)

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Date:	Sun, 20 Sep 2009 11:43:33 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Kay Sievers <kay.sievers@...y.org>, Greg KH <greg@...ah.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [bug] /etc/profile: line 30: /dev/null: Permission denied (Was: 
	Re: [PATCH] Remove broken by design and by implementation devtmpfs 
	maintenance disaster)

>
> Self-contained /dev is great, udev is a total PITA on older distros (on
> this box it sometimes takes 3 minutes for udev to boot ...) so turning
> on devtmpfs and getting something functional in exchange is a big
> selling point IMO.

udev taking 3 minutes usually means you have a kernel driver bug,
udev doesn't have a sleep for 3 minutes, it loads drivers and usually
waits for them to finish. Since someone decided to merge a stupid
floppy PNP match I've seen a lot of floppyless machines hit a 30sec
udev delay. so many that we disabled the pnp floppy on Fedora.

Dave.
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