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Bug 2802

Summary:	6.0 initscripts incompatible with mounting /usr via nfs
Product:	[Retired] Red Hat Linux	Reporter:	plezbert
Component:	initscripts	Assignee:	David Lawrence <dkl>
Status:	CLOSED NEXTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	medium
Version:	6.0
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1999-07-01 17:42:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description plezbert 1999-05-13 21:54:31 UTC

The 6.0 initscripts do not allow mounting /usr via nfs
because of many dependencies on programs on the /usr
partition.

For example, xargs is used when creating the list of
interfaces to bring up, but xargs is found in /usr/bin
(which is not available since the network interface isn't
even up yet).  And the ypbind script uses ypwhich, which is
also in /usr/bin.  (And there may be other--these are just
the ones I've found so far.)  The only real solution to this
is to eliminate all uses of programs in /usr from the
initscripts, even if it means copying or moving needed
program to /bin or /sbin.

In addition, shutting down or rebooting the system won't
work because many of the system daemons (including syslogd
and klogd) are being run from the /usr partition.  This
means that /usr cannot be unmounted, and the system will
wait indefinitely.  I've solved this temporarily by making
netfs and network the last things to be killed in rc0.d and
rc6.d, but a more elegant solution would be to make sure
that none of the system daemons are run from /usr, either by
placing the programs in /sbin or by copying them to /tmp
before running them.

Comment 1 Bill Nottingham 1999-05-14 17:34:59 UTC

OK...

The xargs thing in network was a bug; it's fixed in
initscripts-4.18-1, which will be in the next Raw Hide.

AFAIK, the examples of stuff from /usr used before netfs is:

- ypwhich in ypbind, which we'll fix
- apmd & ypserv, which we probably won't. (There's a chicken
and egg problem with ypbind and ypserv anyways)

Are there any others?

Similarly, the only daemons run from /usr that are killed after
netfs are (that I'm aware of):

- apmd & ypserv, which we probably won't change
- syslogd/klogd, which we probably will...

What else have you noticed?


------- Email Received From  "Michael P. Plezbert" <plezbert.edu> 05/17/99 11:12 -------

Comment 2 plezbert 1999-05-17 21:50:59 UTC

I did find one other problem after I submitted the first message:
rc.sysinit sets the clock before the nfs partitions are mounted, which
means that the /etc/localtime link is broken at the time.

Comment 3 Bill Nottingham 1999-06-23 22:26:59 UTC

The /etc/localtime problem should be fixed with the latest
initscripts (4.22) and timeconfig (3.0); these make /etc/localtime
be a copy of the timezone data file instead of a symlink
(the name of the file is stored in /etc/sysconfig/clock.)
Hence, you can set the clock as soon as the initscripts start.

Comment 4 Bill Nottingham 1999-07-01 17:42:59 UTC

OK, I believe this should be fixed as of:
initscripts > 4.23.
apmd >= 3.0beta8-1
ypserv >= 1.3.6.94-2
ypbind >= 3.3-21

all of which should be in the next Raw Hide release.