[Samba] SMB share and .mdb files?

[David Ferreira]

Hi,

Some apps locks only parts of the files, blocking access to all users if 
you haven't activated oportunistic lockings (allow locking only part of 
a file, not the whole file) You can find more info about it in 
http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/locking.html#id2609918

I hope it works for you

Greets,
David
> Hi.
>
> With samba 3.0.25b as part of Mac OS X 10.5.4 Server, I'm encountering
> issues with .mdb files: Some Windows apps use client software on local
> machines and one Microsoft Access database on the SMB share. Everything
> works fine, as long as there's only one client using the .mdb file. As
> soon as a second client tries to access (and write!) to the .mdb file,
> the clients on the Windows machines report broken network connections
> and crash.
>
> In Server-Admin/File-Sharing, the shares are open for SMB only, oplock
> and strict locking both off. No ACL, Posix permission admin r/w, group
> r/w, other r.
>
> (Mac-specific: Could Spotlight do harm to this? It could be disabled
> for this share...)
>
>
> smb.conf (/etc)
>
> [global]
>     debug pid = yes
>     log level = 1
>     server string = Mac OS X
>
>     printcap name = cups
>     printing = cups
>
>     encrypt passwords = yes
>     use spnego = yes
>
>     passdb backend = odsam
>
>     idmap domains = default
>     idmap config default: default = yes
>     idmap config default: backend = odsam
>     idmap alloc backend = odsam
>     idmap negative cache time = 5
>
>     map to guest = Bad User
>     guest account = nobody
>
>     unix charset = UTF-8-MAC
>     display charset = UTF-8-MAC
>     dos charset = 437
>
>     vfs objects = darwinacl,darwin_streams
>
>     ; Don't become a master browser unless absolutely necessary.
>     os level = 2
>     domain master = no
>
>     ; For performance reasons, set the transmit buffer size
>     ; to the maximum and enable sendfile support.
>     max xmit = 131072
>     use sendfile = yes
>
>     ; The darwin_streams module gives us named streams support.
>     stream support = yes
>     ea support = yes
>
>     ; Enable locking coherency with AFP.
>     darwin_streams:brlm = yes
>
>     ; Core files are invariably disabled system-wide, but attempting to
>     ; dump core will trigger a crash report, so we still want to try.
>     enable core files = yes
>
>     ; Configure usershares for use by the synchronize-shares tool.
>     usershare max shares = 1000
>     usershare path = /var/samba/shares
>     usershare owner only = no
>     usershare allow guests = yes
>     usershare allow full config = yes
>
>     ; Filter inaccessible shares from the browse list.
>     com.apple:filter shares by access = yes
>
>     ; Check in with PAM to enforce SACL access policy.
>     obey pam restrictions = yes
>
>     ; Don't be trying to enforce ACLs in userspace.
>     acl check permissions = no
>
>     ; Make sure that we resolve unqualified names as NetBIOS before DNS.
>     name resolve order = lmhosts wins bcast host
>
>     ; Pull in system-wide preference settings. These are managed by
>     ; synchronize-preferences tool.
>     include = /var/db/smb.conf
>
> [printers]
>     comment = All Printers
>     path = /tmp
>     printable = yes
>     guest ok = no
>     create mode = 0700
>     writeable = no
>     browseable = no
>
>
> smb.conf (/var/db)
>
> [global]
>     security = USER
>     auth methods = odsam
>     netbios name = serverg4
>     workgroup = ARBEITSGRUPPE
>     realm = SERVERG4.xxxxxxxxx.INTERN
>     dos charset = CP437
>     server string = serverg4
>     ntlm auth = yes
>     lanman auth = yes
>     max smbd processes = 100
>     log level = 1
>     use kerberos keytab = yes
>     realm = SERVERG4.xxxxxxxxx.INTERN
>     map to guest = Never
>     domain master = no
>     preferred master = no
>     enable disk services = yes
>     enable print services = yes
>     wins support = no
>
> [homes]
>     comment = User Home Directories
>     browseable = no
>     read only = no
>     create mode = 0750
>     guest ok = no
>     com.apple: show admin all volumes = no
>
>
> Any ideas? Thanks in advance!
>
>
> Best,
> Beste Gruesse, Hannes Gnad                           h.gnad at apfelwerk.de
> Apple Distinguished Professional                http://www.apfelwerk.de/
> * Mac OS X 10.5 Leopard - seit 26. Oktober 2007 - http://www.apple.de/ *
>
>
>

-- 
David Ferreira
Dpto. de sistemas
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