Strange issue with Samba on 8.0rc1
Ivan Voras
ivoras at freebsd.org
Thu Oct 22 10:07:33 UTC 2009
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?
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