[Samba] File Corruption

[John H Terpstra]

On Sun, 3 Aug 2003, Jeremy Allison wrote:

> On Sat, Aug 02, 2003 at 09:56:31PM -0400, Scott Sipe wrote:
> >
> > Ok, I added the auditing module to my main share.  As a test I
> > redownloaded the mozilla installer and put it in it's own directory on
> > the samba share.  I took a md5 immediately after downloading it.  I then
> > tried installing to several computers directly from the share, copied
> > the file to client PC's and then back to the samba server, etc--it
> > remained good.  Then I added a cronjob that mailed me the md5 of the
> > mozilla installer file every hour, and went home.  The first email
> > (mailed like 1 minute before I left work) was the correct md5, 1 hour
> > later (I was not doing anything, nor was anyone else for that hour) the
> > file is corrupt.  The audit log shows no access to that file from samba.
> >
> > So I guess the only conclusion is that it's not Samba's fault?
>
> Seems to be so. If we had generic file corruption like this the
> peasants with pickforks would have been storming Samba towers
> demanding the head of Andrew Tridgell long before now :-).
>
> Try using the Linux "immutable" attribute to see if it really
> is a process doing the damaging of the file.

For information on how to do this see: man chattr

The command to set this is:

	chattr +i 'filename'

- John T.
-- 
John H Terpstra
Email: jht at samba.org