current version of Bacula that is under development. This version will be
released at some later date, probably near the end of 2010.
+\section{Changes in Bvfs (Bacula Virtual FileSystem)}
+
+Bat has now a bRestore panel that uses Bvfs to display files and
+directories. It's still experimental.
+
+\texttt{Important}, the Bvfs module is not currently compatible with BaseJobs,
+Copy and Migration jobs.
+
+\subsection*{General notes}
+
+\begin{itemize}
+\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}
+
+\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_cleanup path=b20001
+\end{verbatim}
+
\section{Changes in the pruning algorithm}
We rewrote the job pruning algorithm in this version. Previously, in some users
projects / bacula / docs / commitdiff