To help developers of restore GUI interfaces, we have added new \textsl{dot
commands} that permit browsing the catalog in a very simple way.
+
+Bat has now a bRestore panel that uses Bvfs to display files and
+directories.
+
+\begin{figure}[htbp]
+ \centering
+ \includegraphics[width=12cm]{\idir bat-brestore}
+ \label{fig:batbrestore}
+ \caption{Bat Brestore Panel}
+\end{figure}
+
+\texttt{Important}, the Bvfs module does not yet work correctly with BaseJobs,
+Copy and Migration jobs.
+
+\medskip
+This project was funded by Bacula Systems.
+
+\subsection*{General notes}
+
\begin{itemize}
-\item \texttt{.bvfs\_update [jobid=x,y,z]} This command is required to update
- the Bvfs cache in the catalog. You need to run it before any access to the
- Bvfs layer.
-
-\item \texttt{.bvfs\_lsdirs jobid=x,y,z path=/path | pathid=101} This command
- will list all directories in the specified \texttt{path} or
- \texttt{pathid}. Using \texttt{pathid} avoids problems with character
- encoding of path/filenames.
-
-\item \texttt{.bvfs\_lsfiles jobid=x,y,z path=/path | pathid=101} This command
- will list all files in the specified \texttt{path} or \texttt{pathid}. Using
- \texttt{pathid} avoids problems with character encoding.
+\item All fields are separated by a tab
+\item You can specify \texttt{limit=} and \texttt{offset=} to list smoothly
+ records in very big directories
+\item All operations (except cache creation) are designed to run instantly
+\item At this time, Bvfs works faster on PostgreSQL than MySQL catalog. If you
+ can contribute new faster SQL queries we will be happy, else don't complain
+ about speed.
+\item The cache creation is dependent of the number of directories. As Bvfs
+ shares information accross jobs, the first creation can be slow
+\item All fields are separated by a tab
+\item Due to potential encoding problem, it's advised to allways use pathid in
+ queries.
\end{itemize}
-You can use \texttt{limit=xxx} and \texttt{offset=yyy} to limit the amount of
-data that will be displayed.
+\subsection*{Get dependent jobs from a given JobId}
+
+Bvfs allows you to query the catalog against any combination of jobs. You
+can combine all Jobs and all FileSet for a Client in a single session.
+
+To get all JobId needed to restore a particular job, you can use the
+\texttt{.bvfs\_get\_jobids} command.
+
+\begin{verbatim}
+.bvfs_get_jobids jobid=num [all]
+\end{verbatim}
+
+\begin{verbatim}
+.bvfs_get_jobids jobid=10
+1,2,5,10
+.bvfs_get_jobids jobid=10 all
+1,2,3,5,10
+\end{verbatim}
+
+In this example, a normal restore will need to use JobIds 1,2,5,10 to
+compute a complete restore of the system.
+
+With the \texttt{all} option, the Director will use all defined FileSet for
+this client.
+
+\subsection*{Generating Bvfs cache}
+
+The \texttt{.bvfs\_update} command computes the directory cache for jobs
+specified in argument, or for all jobs if unspecified.
+
+\begin{verbatim}
+.bvfs_update [jobid=numlist]
+\end{verbatim}
+
+Example:
+\begin{verbatim}
+.bvfs_update jobid=1,2,3
+\end{verbatim}
+
+You can run the cache update process in a RunScript after the catalog backup.
+
+\subsection*{Get all versions of a specific file}
+
+Bvfs allows you to find all versions of a specific file for a given Client with
+the \texttt{.bvfs\_version} command. To avoid problems with encoding, this
+function uses only PathId and FilenameId. The jobid argument is mandatory but
+unused.
+
+\begin{verbatim}
+.bvfs_versions client=filedaemon pathid=num filenameid=num jobid=1
+PathId FilenameId FileId JobId LStat Md5 VolName Inchanger
+PathId FilenameId FileId JobId LStat Md5 VolName Inchanger
+...
+\end{verbatim}
+
+Example:
+
+\begin{verbatim}
+.bvfs_versions client=localhost-fd pathid=1 fnid=47 jobid=1
+1 47 52 12 gD HRid IGk D Po Po A P BAA I A /uPgWaxMgKZlnMti7LChyA Vol1 1
+\end{verbatim}
+
+\subsection*{List directories}
+
+Bvfs allows you to list directories in a specific path.
+\begin{verbatim}
+.bvfs_lsdirs pathid=num path=/apath jobid=numlist limit=num offset=num
+PathId FilenameId FileId JobId LStat Path
+PathId FilenameId FileId JobId LStat Path
+PathId FilenameId FileId JobId LStat Path
+...
+\end{verbatim}
+
+You need to \texttt{pathid} or \texttt{path}. Using \texttt{path=""} will list
+``/'' on Unix and all drives on Windows. If FilenameId is 0, the record
+listed is a directory.
+
+\begin{verbatim}
+.bvfs_lsdirs pathid=4 jobid=1,11,12
+4 0 0 0 A A A A A A A A A A A A A A .
+5 0 0 0 A A A A A A A A A A A A A A ..
+3 0 0 0 A A A A A A A A A A A A A A regress/
+\end{verbatim}
+
+In this example, to list directories present in \texttt{regress/}, you can use
+\begin{verbatim}
+.bvfs_lsdirs pathid=3 jobid=1,11,12
+3 0 0 0 A A A A A A A A A A A A A A .
+4 0 0 0 A A A A A A A A A A A A A A ..
+2 0 0 0 A A A A A A A A A A A A A A tmp/
+\end{verbatim}
+
+\subsection*{List files}
+
+Bvfs allows you to list files in a specific path.
+\begin{verbatim}
+.bvfs_lsfiles pathid=num path=/apath jobid=numlist limit=num offset=num
+PathId FilenameId FileId JobId LStat Path
+PathId FilenameId FileId JobId LStat Path
+PathId FilenameId FileId JobId LStat Path
+...
+\end{verbatim}
+
+You need to \texttt{pathid} or \texttt{path}. Using \texttt{path=""} will list
+``/'' on Unix and all drives on Windows. If FilenameId is 0, the record listed
+is a directory.
+
+\begin{verbatim}
+.bvfs_lsfiles pathid=4 jobid=1,11,12
+4 0 0 0 A A A A A A A A A A A A A A .
+5 0 0 0 A A A A A A A A A A A A A A ..
+1 0 0 0 A A A A A A A A A A A A A A regress/
+\end{verbatim}
+
+In this example, to list files present in \texttt{regress/}, you can use
+\begin{verbatim}
+.bvfs_lsfiles pathid=1 jobid=1,11,12
+1 47 52 12 gD HRid IGk BAA I BMqcPH BMqcPE BMqe+t A titi
+1 49 53 12 gD HRid IGk BAA I BMqe/K BMqcPE BMqe+t B toto
+1 48 54 12 gD HRie IGk BAA I BMqcPH BMqcPE BMqe+3 A tutu
+1 45 55 12 gD HRid IGk BAA I BMqe/K BMqcPE BMqe+t B ficheriro1.txt
+1 46 56 12 gD HRie IGk BAA I BMqe/K BMqcPE BMqe+3 D ficheriro2.txt
+\end{verbatim}
+
+\subsection*{Restore set of files}
+
+Bvfs allows you to create a SQL table that contains files that you want to
+restore. This table can be provided to a restore command with the file option.
+
+\begin{verbatim}
+.bvfs_restore fileid=numlist dirid=numlist hardlink=numlist path=b2num
+OK
+restore file=?b2num ...
+\end{verbatim}
+
+To include a directory (with \texttt{dirid}), Bvfs needs to run a query to
+select all files. This query could be time consuming.
+
+\texttt{hardlink} list is always composed of a serie of two numbers (jobid,
+fileindex). This information can be found in the LinkFI field of the LStat
+packet.
+
+The \texttt{path} argument represents the name of the table that Bvfs will
+store results. The format of this table is \texttt{b2[0-9]+}. (Should start by
+b2 and followed by digits).
+
+Example:
+
+\begin{verbatim}
+.bvfs_restore fileid=1,2,3,4 hardlink=10,15,10,20 jobid=10 path=b20001
+OK
+\end{verbatim}
+
+\subsection*{Cleanup after Restore}
+
+To drop the table used by the restore command, you can use the
+\texttt{.bvfs\_cleanup} command.
\begin{verbatim}
-* .bvfs_update jobid=1,2
-* .bvfs_update
-* .bvfs_lsdir path=/ jobid=1,2
+.bvfs_cleanup path=b20001
\end{verbatim}
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