Bug 875216

Summary:	Kernel update for nfsroot host results in "mount.nfs: Protocol not supported" error on boot
Product:	[Fedora] Fedora	Reporter:	Peter McNabb <peter>
Component:	dracut	Assignee:	dracut-maint
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	17	CC:	dracut-maint, goeran, harald, jonathan
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2013-05-29 13:16:49 UTC	Type:	Bug
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Peter McNabb 2012-11-09 20:40:52 UTC

Description of problem:
At some point during F17 release, the NFS-related kernel modules changed so that a new nfsv3 module needs to be loaded to mount an NFS export. The initramfs created by dracut does not include the newer modules (in my case "nfsv3" and "nfs_acl" are required) and a host that attempts to mount its root filesystem over NFS fails with the message "mount.nfs: Protocol not supported".

It can be worked around by re-running dracut with the option '--add-drivers "nfsv3 nfs_acl"' after installing the new kernel.

It looks like this is already fixed in dracut (commit ba111df2b99f9f1dc5c51442ad92bcefbf16bd91) and part of release dracut-024, but that version is only being built for F18.

Version-Release number of selected component (if applicable):
Ok in 3.4.6-2.fc17.x86_64, definitely broken in 3.6.5-1.fc17.x86_64

How reproducible:
Every time

Steps to Reproduce:
1. Update to latest kernel package
2. Copy dracut-generated initramfs to tftp server
3. Configure pxelinux to use new initramfs
4. Reboot host
  
Actual results:
Host fails to boot with the error "mount.nfs: Protocol not supported"

Expected results:
Host boots

Comment 1 Peter McNabb 2012-11-09 20:55:40 UTC

I should add that the version of dracut is dracut-018-105.git20120927.fc17.noarch (used with both kernel versions mentioned).

Comment 2 Harald Hoyer 2013-05-29 12:56:06 UTC

commit ba111df2b99f9f1dc5c51442ad92bcefbf16bd91

Comment 3 Harald Hoyer 2013-05-29 13:16:49 UTC


*** This bug has been marked as a duplicate of bug 869180 ***