Re: Strange issue with Samba on 8.0rc1

David Ehrmann wrote:
> I'm having a strange issue with samba-3.3.8.  When I open a file from a 
> Vista machine, it's corrupted.  When it's an uncompressed image, I get 
> sections where 3308 bytes of pixels are black.  They're not evenly 
> distributed, and I'd guess they fill between 10% and 20% of the image.  
> If I open the file from an XP machine (in VMware on the same computer), 
> this doesn't happen.  It's not the disk; it's ZFS, and the lines aren't 
> consistent.  Opening the file from a samba on a different FreeBSD box 
> with the data accessed via NFS works (again, not the disk).  The problem 
> also happens if I access a file on a non-ZFS disk.
> 
> Trying to see if it's a a 8.0 issue, I did a fresh installation in 
> VMware (aside: the kernel in the installer crashes with the LSI Logic 
> controller VMware emulates), installed samba 3.3 from packages, mounted 
> the files via nfs, and it works from Vista.
> 
> A 100MB file transfer with netcat between buggy FreeBSD and Vista worked.
> 
> I grabbed a fresh ports tree, cleaned it, then did portupgrade -P -R -f 
> net/samba33.  Didn't work.  I tried again, but entirely from packages, 
> and also removed and reinstalled most of the dependencies, but no luck.  
> That time, I even started a fresh smb.conf and deleted /var/db/samba.
> 
> My /var was corrupted at one point, so any db there might not have been 
> reliable (hence -R on portupgrade).
> 
> Ideas?

This looks like too much problems at the same time to be a problem in 
samba or FreeBSD.

For what it's worth, here are some ideas and data points:

- FreeBSD 8.0-RC1 installs and runs perfectly normal in VMWare ESXi with 
LSI emulation
- If it is a disk problem (bad cable? controller?) it could manifest 
itself or at least give some clue if you did 'zpool scrub'. ZFS is 
checksummed - it should give you IO errors if the data gets corrupted.
- There are several versions of Samba in the ports - can you try another 
one?
- Before you do anything, have you updated to the latest 8.0 source?