Bug 435697

Summary:	No swap in diskless environment
Product:	Red Hat Enterprise Linux 4	Reporter:	Ondrej Valousek <ondrejv>
Component:	system-config-netboot	Assignee:	Jaroslav Reznik <jreznik>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	4.6
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-04-06 11:21:25 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 Ondrej Valousek 2008-03-03 13:21:06 UTC

Description of problem:
I am trying to configure swap for diskless workstations using the local HDD by
modifying /etc/fstab to contain something like:
/dev/sda        swap            swap    defaults        0 0
but it does not work - the swap is not activated during the boot procedure.
Later manual activation by swapon -a command works fine.

Further investigation shows that the problem cause is the fact, that the block
device /dev/sda is not known to the system at the time /etc/rc.d/rc.sysinit
script is being executed.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. install a HDD into the machine booting via network
2. modify /etc/fstab to contain local swap partition on that hdd.
3. boot
  
Actual results:
no swap is activated

Expected results:
swap is activated as per configuration in /etc/fstab

Additional info:

Comment 1 Ondrej Valousek 2008-05-06 12:16:51 UTC

It turned out, that the hardware initialization is too early followed by the
attempt to active the swap so that the necessary block device in /dev is not yet
created.
The simple workaround to this problem is adding some small delay (sleep 5 in my
case seems to be sufficient) to the /etc/rc.d/rc.sysinit startup script before
activating the swap.
Ondrej

Comment 3 Jaroslav Reznik 2010-04-06 11:21:25 UTC

System-config-netboot is now in maintenance mode only, no further development
is planned for RHEL 4.x. Closing as WONTFIX. I'm not sure about exact sleep time before swap activation.