This is a question & answer in one post, but since this forum is searchable, maybe I can save someone else a surprise.

On Sep 24, Yum updated bind and samba, and suddenly my samba service stopped working. From Windows, I'd get a password prompt when I'd try to use a share, and entering the password several ways didn't help.

In my server messages.log, I saw several lines like this:

Sep 24 19:31:27 Nicaea smbd[2869]: [2009/09/24 19:31:27, 0] lib/util_sock.c:1685(get_peer_name)
Sep 24 19:31:27 Nicaea smbd[2869]: Matchname failed on Thrace ::ffff:10.0.0.3

Not terribly helpful, since Thrace is 10.0.0.3. For a while I thought this was a new IPV6 problem, but disabling IPV6 (modprobe/blacklist) didn't fix it; that just hid the message.

So I thought maybe the passwords had been reset with the samba update:

# smbpasswd quip11
New SMB password:
Retype new SMB password:
Failed to find entry for user quip11.

Huh!? No entry for my username? This is new. The samba update didn't just reset my password; it removed the user! Fortunately it's easy to add a samba user with

# smbpasswd -a quip11
New SMB password:
Retype new SMB password:
Added user quip11.

And now the samba share works again.

-Q

Thanks for the info. Just consider this response as a means of getting rid of a 0 reply.

A Big Thank You! Just rebooted my Gentoo server after long overdue updates.. Samba quit working just as described. Never would have made that connection.. back up just as described after adding my user names back in.

Nick