Bug 7100 – File corruption with filesystems mounted from IBM AIX 4.2.1

Bug 7100 - File corruption with filesystems mounted from IBM AIX 4.2.1

Summary:	File corruption with filesystems mounted from IBM AIX 4.2.1

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	kernel (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	i386 Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Michael K. Johnson
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Reported:	1999-11-18 10:02 EST by Luca Giuzzi
Modified:	2008-05-01 11:37 EDT (History)
CC List:	2 users (show)

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Fixed In Version:
Doc Type:	Bug Fix
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Last Closed:	2000-02-08 09:53:31 EST
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Description Luca Giuzzi 1999-11-18 10:02:25 EST

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 17:26:59 EST

Assigned to dledford

Comment 2 Stephen Tweedie 2000-02-08 09:53:59 EST

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.

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