Date: Thu, 27 Feb 2003 14:11:58 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Peter Pentchev <roam@ringlet.net> Cc: arch@freebsd.org, Poul-Henning Kamp <phk@phk.freebsd.dk>, Julian Elischer <julian@elischer.org> Subject: Re: (almost) Ready to ditch device major numbers. Message-ID: <XFMail.20030227141158.jhb@FreeBSD.org> In-Reply-To: <20030227071247.GJ487@straylight.oblivion.bg>
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On 27-Feb-2003 Peter Pentchev wrote: > On Wed, Feb 26, 2003 at 02:55:34PM -0800, Julian Elischer wrote: >> On Wed, 26 Feb 2003, Poul-Henning Kamp wrote: >> >> > >> > We are now (almost) ready to ditch device major numbers if we want to. >> > >> > >> > 5) Remove the d_maj field from struct cdevsw entirely and make >> > dynamic allocation the default. >> > >> > Comments welcome. >> >> Sounds right to me.. >> (I assume there are no NFS related gotchas) > > What happens to a FreeBSD NFS server, or rather, to its clients, if the > server is rebooted and the client remounts the NFS share? Could some > programs at the client side be confused by the suddenly changed device > major numbers? devices are local to the machine. If you open a cdev from an NFS mount, it will try to open it as a device on the local machine, not on the remote machine. Exporting devfs over NFS seems rather pointless. Exporting devices over NFS is only really useful for diskless boots on systems w/o devfs (i.e. 4.x). -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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