Bug 7100

Summary:	File corruption with filesystems mounted from IBM AIX 4.2.1
Product:	[Retired] Red Hat Linux	Reporter:	Luca Giuzzi <lucag>
Component:	kernel	Assignee:	Michael K. Johnson <johnsonm>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	medium
Version:	6.1	CC:	dautrevaux, lucag
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2000-02-08 14:53:31 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 Luca Giuzzi 1999-11-18 15:02:25 UTC

While compiling in a directory exported from an IBM AIX 4.2.1 server,
file corruption has been detected in a predictable way for the object
code generated by gcc. The problem does not present itself when
the directory is exported by a linux, Digital Unix (4.01E) or Solaris
(2.6+security fixes). Likewise, the problem is not visible when the
kernel being used is a 2.2.10.
It seems that this form of file corruption does not happen when simply
copying a file from the exported filesystem onto itself.

Comment 1 Cristian Gafton 2000-01-04 22:26:59 UTC

Assigned to dledford

Comment 2 Stephen Tweedie 2000-02-08 14:53:59 UTC

This sounds like a known AIX NFS server bug.  From memory, AIX cannot deal with
padded NFS packets, assuming that the NFS packet data length is equal to the IP
packet length.  See the report at

http://www.uwsg.indiana.edu/hypermail/linux/kernel/9911.0/0452.html

and the work-around at

http://www.uwsg.indiana.edu/hypermail/linux/kernel/9911.0/0549.html

There are a couple of NFS patches referenced at

http://www.uwsg.indiana.edu/hypermail/linux/kernel/9911.0/0498.html

but there is no guarantee that they will help.