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Samba HowTo Guide
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TDB Data Files

Refer to Installation, Chapter 1, Chapter 1 for information pertaining to the Samba-3 data files, their location and the information that must be preserved across server migrations, updates and upgrades.

Please remember to back up your existing ${lock directory}/*tdb before upgrading to Samba-3. If necessary, Samba will upgrade databases as they are opened. Downgrading from Samba-3 to 2.2, or reversion to an earlier version of Samba-3 from a later release, is an unsupported path.

The old Samba-2.2.x tdb files are described in the next table.

Table34.1.Samba-2.2.x TDB File Descriptions

Name Description Backup?
account_policy User policy settings yes
brlock Byte-range file locking information. no
connections

Client connection information

no
locking Temporary file locking data. no
messages

Temporary storage of messages being processed by smbd.

no
ntdrivers

Stores per-printer driver information.

yes
ntforms

Stores per-printer forms information.

yes
ntprinters

Stores the per-printer devmode configuration settings.

yes
printing/*.tdb

Cached output from lpq command created on a per-print-service basis.

no
registry

Read-only Samba registry skeleton that provides support for exporting various database tables via the winreg RPCs.

no
sessionid

Temporary cache for miscellaneous session information.

no
share_info Share ACL settings. yes
unexpected

Packets received for which no process was listening.

no
winbindd_cache

Cache of identity information received from an NT4 or an ADS domain.

yes
winbindd_idmap

New ID map table from SIDS to UNIX UIDs/GIDs.

yes
Samba HowTo Guide
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