Bug 520809

Summary:	Samba "map read only" problems
Product:	[Fedora] Fedora	Reporter:	260795 <d.sbragion>
Component:	samba	Assignee:	Simo Sorce <ssorce>
Status:	CLOSED DEFERRED	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	11	CC:	gdeschner, ssorce
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:	2009-09-02 14:09:13 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 260795 2009-09-02 13:58:48 UTC

Description of problem:

Samba setting "map read only = yes" causes problem with read only files.

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

samba-3.3.2-0.33.fc11

How reproducible:

Always

Steps to Reproduce:

1. Add "map read only = yes" to the configuration file
2. Set a file shared by samba as read only from a Windows client
3. Try removing the read only attribute
  
Actual results:

Permission problem errors.

Expected results:

Removal of the read only attribute.

Additional info:

The bug is better described here:

https://bugzilla.samba.org/show_bug.cgi?id=6186

Please consider including the provided patch or upgraded to a later version of samba, cause this bug cause serious problems with CVS/SVN workong copies placed on a samba share.

Comment 1 Simo Sorce 2009-09-02 14:09:13 UTC

Samba 3.3.0 and Fedora 11 can use Extend Attributes to store DOS information.
Please avoid using map read only, and instead use store dos attributes.

Mapping dos attributes on permission bits have many side effects, so just use the work around described in the bug.
The patch is pushed upstream in the 3.3.X branch and will be available bundled with the next samba update.

Comment 2 260795 2009-09-02 15:04:44 UTC

Thanks. Unfortunately rebooting the server to enable the user_xattr on the mounted partitions is not an option for me. In the meantime I solved by rebuilding the SRC rpm and replacing the samba source tarball with a newer one, modifying the spec file where needed. Looking forward for the official update.

Comment 3 Simo Sorce 2009-09-02 15:21:01 UTC

Unless you kept upgrading from an anicent release of Fedora, both ACLs and xattrs are enabled by default on extX file systems.

Infact xattrs are needed also by Selinux.

Comment 4 260795 2009-09-02 15:35:26 UTC

You got it. This is a server which has been upgraded since RedHat 7.1 up to FC11. That's why xattrs are not enabled. Selinux disabled too. BTW, the interim upgrade solved the problem. The next time I'll reboot the server I'll take care to enable the latest extX features.

Thanks again for you quick support!