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Date: Tue, 17 Apr 2001 09:20:57 -0700 (PDT)
From: bbauman@wgate.com
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Subject: misc/26649: diskless client can't share root with server
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>Number:         26649
>Category:       misc
>Synopsis:       diskless client can't share root with server
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Apr 17 09:30:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Bruce Bauman
>Release:        4.3-RC
>Organization:
WorldGate Communications
>Environment:
>Description:
The rc.diskless2 script creates a /dev on the client by doing a mount_mfs followed by a cpio of the server's /dev. This won't work 
because /dev/zero can't be copied to the client's /dev since it 
provides an infinite supply of data. Other devices have similar
problems.
>How-To-Repeat:
Share the root filesystem between the boot server and client in a diskless configuration. No workee.
>Fix:
Rather than using cpio, we copy MAKEDEV to /tmp, then mount_mfs, then
MAKEDEV the appropriate device nodes in the client's /dev. Works like 
a charm and allows you reduce the clutter in the diskless client's /dev.

DEVFS would have been a possible solution for us, but we use dhclient on the diskless clients. dhclient relies on bpf, and bpf won't work
with DEVFS, so although it is a more elegant solution, it wouldn't
work for us.
>Release-Note:
>Audit-Trail:
>Unformatted:

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