--- /dev/null
+%%
+%%
+
+\chapter{Storage Daemon Configuration}
+\label{StoredConfChapter}
+\index[general]{Storage Daemon Configuration}
+\index[general]{Configuration!Storage Daemon}
+
+The Storage Daemon configuration file has relatively few resource definitions.
+However, due to the great variation in backup media and system capabilities,
+the storage daemon must be highly configurable. As a consequence, there are
+quite a large number of directives in the Device Resource definition that
+allow you to define all the characteristics of your Storage device (normally a
+tape drive). Fortunately, with modern storage devices, the defaults are
+sufficient, and very few directives are actually needed.
+
+Examples of {\bf Device} resource directives that are known to work for a
+number of common tape drives can be found in the {\bf
+\lt{}bacula-src\gt{}/examples/devices} directory, and most will also be listed
+here.
+
+For a general discussion of configuration file and resources including the
+data types recognized by {\bf Bacula}, please see the
+\ilink{Configuration}{ConfigureChapter} chapter of this manual. The
+following Storage Resource definitions must be defined:
+
+\begin{itemize}
+\item
+ \ilink{Storage}{StorageResource} -- to define the name of the
+ Storage daemon.
+\item
+ \ilink{Director}{DirectorResource1} -- to define the Director's
+ name and his access password.
+\item
+ \ilink{Device}{DeviceResource} -- to define the
+ characteristics of your storage device (tape drive).
+\item
+ \ilink{Messages}{MessagesChapter} -- to define where error and
+ information messages are to be sent.
+\end{itemize}
+
+\section{Storage Resource}
+\label{StorageResource}
+\index[general]{Resource!Storage}
+\index[general]{Storage Resource}
+
+In general, the properties specified under the Storage resource define global
+properties of the Storage daemon. Each Storage daemon configuration file must
+have one and only one Storage resource definition.
+
+\begin{description}
+
+\item [Name = \lt{}Storage-Daemon-Name\gt{}]
+ \index[sd]{Name}
+ \index[sd]{Directive!Name}
+ Specifies the Name of the Storage daemon. This directive is required.
+
+\item [Working Directory = \lt{}Directory\gt{}]
+ \index[sd]{Working Directory}
+ \index[sd]{Directive!Working Directory}
+ This directive is mandatory and specifies a directory in which the Storage
+ daemon may put its status files. This directory should be used only by {\bf
+ Bacula}, but may be shared by other Bacula daemons provided the names
+ given to each daemon are unique. This directive is
+ required
+
+\item [Pid Directory = \lt{}Directory\gt{}]
+ \index[sd]{Pid Directory}
+ \index[sd]{Directive!Pid Directory}
+ This directive is mandatory and specifies a directory in which the Director
+ may put its process Id file files. The process Id file is used to shutdown
+ Bacula and to prevent multiple copies of Bacula from running simultaneously.
+ This directive is required. Standard shell expansion of the {\bf Directory}
+ is done when the configuration file is read so that values such as {\bf
+ \$HOME} will be properly expanded.
+
+ Typically on Linux systems, you will set this to: {\bf /var/run}. If you are
+ not installing Bacula in the system directories, you can use the {\bf Working
+ Directory} as defined above.
+
+\item [Heartbeat Interval = \lt{}time-interval\gt{}]
+ \index[sd]{Heartbeat Interval}
+ \index[sd]{Directive!Heartbeat Interval}
+ \index[general]{Heartbeat Interval}
+ \index[general]{Broken pipe}
+ This directive defines an interval of time in seconds. When
+ the Storage daemon is waiting for the operator to mount a
+ tape, each time interval, it will send a heartbeat signal to
+ the File daemon. The default interval is zero which disables
+ the heartbeat. This feature is particularly useful if you
+ have a router such as 3Com that does not follow Internet
+ standards and times out an valid connection after a short
+ duration despite the fact that keepalive is set. This usually
+ results in a broken pipe error message.
+
+\item [Client Connect Wait = \lt{}time-interval\gt{}]
+ \index[sd]{Connect Wait}
+ \index[sd]{Directive!Connect Wait}
+ \index[general]{Client Connect Wait}
+ This directive defines an interval of time in seconds that
+ the Storage daemon will wait for a Client (the File daemon)
+ to connect. The default is 30 minutes. Be aware that the
+ longer the Storage daemon waits for a Client, the more
+ resources will be tied up.
+
+\item [Maximum Concurrent Jobs = \lt{}number\gt{}]
+ \index[sd]{Maximum Concurrent Jobs}
+ \index[sd]{Directive!Maximum Concurrent Jobs}
+ where \lt{}number\gt{} is the maximum number of Jobs that may run
+ concurrently. The default is set to 10, but you may set it to a larger
+ number. Each contact from the Director (e.g. status request, job start
+ request) is considered as a Job, so if you want to be able to do a {\bf
+ status} request in the console at the same time as a Job is running, you
+ will need to set this value greater than 1. To run simultaneous Jobs,
+ you will need to set a number of other directives in the Director's
+ configuration file. Which ones you set depend on what you want, but you
+ will almost certainly need to set the {\bf Maximum Concurrent Jobs} in
+ the Storage resource in the Director's configuration file and possibly
+ those in the Job and Client resources.
+
+\item [SDAddresses = \lt{}IP-address-specification\gt{}]
+ \index[sd]{SDAddresses}
+ \index[sd]{Directive!SDAddresses}
+ Specify the ports and addresses on which the Storage daemon will listen
+ for Director connections. Normally, the default is sufficient and you
+ do not need to specify this directive. Probably the simplest way to
+ explain how this directive works is to show an example:
+
+\footnotesize
+\begin{verbatim}
+ SDAddresses = { ip = {
+ addr = 1.2.3.4; port = 1205; }
+ ipv4 = {
+ addr = 1.2.3.4; port = http; }
+ ipv6 = {
+ addr = 1.2.3.4;
+ port = 1205;
+ }
+ ip = {
+ addr = 1.2.3.4
+ port = 1205
+ }
+ ip = {
+ addr = 1.2.3.4
+ }
+ ip = {
+ addr = 201:220:222::2
+ }
+ ip = {
+ addr = bluedot.thun.net
+ }
+}
+\end{verbatim}
+\normalsize
+
+where ip, ip4, ip6, addr, and port are all keywords. Note, that the address
+can be specified as either a dotted quadruple, or IPv6 colon notation, or as
+a symbolic name (only in the ip specification). Also, port can be specified
+as a number or as the mnemonic value from the /etc/services file. If a port
+is not specified, the default will be used. If an ip section is specified,
+the resolution can be made either by IPv4 or IPv6. If ip4 is specified, then
+only IPv4 resolutions will be permitted, and likewise with ip6.
+
+Using this directive, you can replace both the SDPort and SDAddress
+directives shown below.
+
+\item [SDPort = \lt{}port-number\gt{}]
+ \index[sd]{SDPort}
+ \index[sd]{Directive!SDPort}
+ Specifies port number on which the Storage daemon listens for Director
+ connections. The default is 9103.
+
+\item [SDAddress = \lt{}IP-Address\gt{}]
+ \index[sd]{SDAddress}
+ \index[sd]{Directive!SDAddress}
+ This directive is optional, and if it is specified, it will cause the
+ Storage daemon server (for Director and File daemon connections) to bind
+ to the specified {\bf IP-Address}, which is either a domain name or an
+ IP address specified as a dotted quadruple. If this directive is not
+ specified, the Storage daemon will bind to any available address (the
+ default).
+
+\end{description}
+
+The following is a typical Storage daemon Storage definition.
+
+\footnotesize
+\begin{verbatim}
+#
+# "Global" Storage daemon configuration specifications appear
+# under the Storage resource.
+#
+Storage {
+ Name = "Storage daemon"
+ Address = localhost
+ WorkingDirectory = "~/bacula/working"
+ Pid Directory = "~/bacula/working"
+}
+\end{verbatim}
+\normalsize
+
+\section{Director Resource}
+\label{DirectorResource1}
+\index[general]{Director Resource}
+\index[general]{Resource!Director}
+
+The Director resource specifies the Name of the Director which is permitted
+to use the services of the Storage daemon. There may be multiple Director
+resources. The Director Name and Password must match the corresponding
+values in the Director's configuration file.
+
+\begin{description}
+
+\item [Name = \lt{}Director-Name\gt{}]
+ \index[sd]{Name}
+ \index[sd]{Directive!Name}
+ Specifies the Name of the Director allowed to connect to the Storage daemon.
+ This directive is required.
+
+\item [Password = \lt{}Director-password\gt{}]
+ \index[sd]{Password}
+ \index[sd]{Directive!Password}
+ Specifies the password that must be supplied by the above named Director.
+ This directive is required.
+
+\item [Monitor = \lt{}yes\vb{}no\gt{}]
+ \index[sd]{Monitor}
+ \index[sd]{Directive!Monitor}
+ If Monitor is set to {\bf no} (default), this director will have full
+ access to this Storage daemon. If Monitor is set to {\bf yes}, this
+ director will only be able to fetch the current status of this Storage
+ daemon.
+
+ Please note that if this director is being used by a Monitor, we highly
+ recommend to set this directive to {\bf yes} to avoid serious security
+ problems.
+
+\end{description}
+
+The following is an example of a valid Director resource definition:
+
+\footnotesize
+\begin{verbatim}
+Director {
+ Name = MainDirector
+ Password = my_secret_password
+}
+\end{verbatim}
+\normalsize
+
+\label{DeviceResource}
+\section{Device Resource}
+\index[general]{Resource!Device}
+\index[general]{Device Resource}
+
+The Device Resource specifies the details of each device (normally a tape
+drive) that can be used by the Storage daemon. There may be multiple
+Device resources for a single Storage daemon. In general, the properties
+specified within the Device resource are specific to the Device.
+
+\begin{description}
+
+\item [Name = {\it Device-Name}]
+ \index[sd]{Name}
+ \index[sd]{Directive!Name}
+ Specifies the Name that the Director will use when asking to backup or
+ restore to or from to this device. This is the logical Device name, and may
+ be any string up to 127 characters in length. It is generally a good idea to
+ make it correspond to the English name of the backup device. The physical
+ name of the device is specified on the {\bf Archive Device} directive
+ described below. The name you specify here is also used in your Director's
+ conf file on the
+ \ilink{Device directive}{StorageResource2} in its Storage
+ resource.
+
+\item [Archive Device = {\it name-string}]
+ \index[sd]{Archive Device}
+ \index[sd]{Directive!Archive Device}
+ The specified {\bf name-string} gives the system file name of the storage
+ device managed by this storage daemon. This will usually be the device file
+ name of a removable storage device (tape drive), for example "{\bf
+ /dev/nst0}" or "{\bf /dev/rmt/0mbn}". For a DVD-writer, it will be for
+ example {\bf /dev/hdc}. It may also be a directory name if you are archiving
+ to disk storage. In this case, you must supply the full absolute path to the
+ directory. When specifying a tape device, it is preferable that the
+ "non-rewind" variant of the device file name be given. In addition, on
+ systems such as Sun, which have multiple tape access methods, you must be
+ sure to specify to use Berkeley I/O conventions with the device. The {\bf b}
+ in the Solaris (Sun) archive specification {\bf /dev/rmt/0mbn} is what is
+ needed in this case. Bacula does not support SysV tape drive behavior.
+
+ As noted above, normally the Archive Device is the name of a tape drive, but
+ you may also specify an absolute path to an existing directory. If the
+ Device is a directory Bacula will write to file storage in the specified
+ directory, and the filename used will be the Volume name as specified in the
+ Catalog. If you want to write into more than one directory (i.e. to spread
+ the load to different disk drives), you will need to define two Device
+ resources, each containing an Archive Device with a different directory.
+ \label{SetupFifo}
+ In addition to a tape device name or a directory name, Bacula will accept the
+ name of a FIFO. A FIFO is a special kind of file that connects two programs
+ via kernel memory. If a FIFO device is specified for a backup operation, you
+ must have a program that reads what Bacula writes into the FIFO. When the
+ Storage daemon starts the job, it will wait for {\bf MaximumOpenWait} seconds
+ for the read program to start reading, and then time it out and terminate
+ the job. As a consequence, it is best to start the read program at the
+ beginning of the job perhaps with the {\bf RunBeforeJob} directive. For this
+ kind of device, you never want to specify {\bf AlwaysOpen}, because you want
+ the Storage daemon to open it only when a job starts, so you must explicitly
+ set it to {\bf No}. Since a FIFO is a one way device, Bacula will not attempt
+ to read a label of a FIFO device, but will simply write on it. To create a
+ FIFO Volume in the catalog, use the {\bf add} command rather than the {\bf
+ label} command to avoid attempting to write a label.
+
+\footnotesize
+\begin{verbatim}
+Device {
+ Name = FifoStorage
+ Media Type = Fifo
+ Device Type = Fifo
+ Archive Device = /tmp/fifo
+ LabelMedia = yes
+ Random Access = no
+ AutomaticMount = no
+ RemovableMedia = no
+ MaximumOpenWait = 60
+ AlwaysOpen = no
+}
+\end{verbatim}
+\normalsize
+
+ During a restore operation, if the Archive Device is a FIFO, Bacula will
+ attempt to read from the FIFO, so you must have an external program that
+ writes into the FIFO. Bacula will wait {\bf MaximumOpenWait} seconds for the
+ program to begin writing and will then time it out and terminate the job. As
+ noted above, you may use the {\bf RunBeforeJob} to start the writer program
+ at the beginning of the job.
+
+ The Archive Device directive is required.
+
+\item [Device Type = {\it type-specification}]
+ \index[sd]{Device Type}
+ \index[sd]{Directive!Device Type}
+ The Device Type specification allows you to explicitly tell Bacula
+ what kind of device you are defining. It the {\it type-specification}
+ may be one of the following:
+ \begin{description}
+ \item [File]
+ Tells Bacula that the device is a file. It may either be a
+ file defined on fixed medium or a removable filesystem such as
+ USB. All files must be random access devices.
+ \item [Tape]
+ The device is a tape device and thus is sequential access. Tape devices
+ are controlled using ioctl() calls.
+ \item [Fifo]
+ The device is a first-in-first out sequential access read-only
+ or write-only device.
+ \item [DVD]
+ The device is a DVD. DVDs are sequential access for writing, but
+ random access for reading.
+ \end{description}
+
+ The Device Type directive is not required, and if not specified, Bacula
+ will attempt to guess what kind of device has been specified using the
+ Archive Device specification supplied. There are several advantages to
+ explicitly specifying the Device Type. First, on some systems, block and
+ character devices have the same type, which means that on those systems,
+ Bacula is unlikely to be able to correctly guess that a device is a DVD.
+ Secondly, if you explicitly specify the Device Type, the mount point
+ need not be defined until the device is opened. This is the case with
+ most removable devices such as USB that are mounted by the HAL daemon.
+ If the Device Type is not explicitly specified, then the mount point
+ must exist when the Storage daemon starts.
+
+ This directive was implemented in Bacula version 1.38.6.
+
+
+\item [Media Type = {\it name-string}]
+ \index[sd]{Media Type}
+ \index[sd]{Directive!Media Type}
+ The specified {\bf name-string} names the type of media supported by this
+ device, for example, "DLT7000". Media type names are arbitrary in that you
+ set them to anything you want, but they must be known to the volume
+ database to keep track of which storage daemons can read which volumes. In
+ general, each different storage type should have a unique Media Type
+ associated with it. The same {\bf name-string} must appear in the
+ appropriate Storage resource definition in the Director's configuration
+ file.
+
+ Even though the names you assign are arbitrary (i.e. you choose the name
+ you want), you should take care in specifying them because the Media Type
+ is used to determine which storage device Bacula will select during
+ restore. Thus you should probably use the same Media Type specification
+ for all drives where the Media can be freely interchanged. This is not
+ generally an issue if you have a single Storage daemon, but it is with
+ multiple Storage daemons, especially if they have incompatible media.
+
+ For example, if you specify a Media Type of "DDS-4" then during the
+ restore, Bacula will be able to choose any Storage Daemon that handles
+ "DDS-4". If you have an autochanger, you might want to name the Media Type
+ in a way that is unique to the autochanger, unless you wish to possibly use
+ the Volumes in other drives. You should also ensure to have unique Media
+ Type names if the Media is not compatible between drives. This
+ specification is required for all devices.
+
+ In addition, if you are using disk storage, each Device resource will
+ generally have a different mount point or directory. In order for
+ Bacula to select the correct Device resource, each one must have a
+ unique Media Type.
+
+\label{Autochanger}
+\item [Autochanger = {\it yes\vb{}no}]
+ \index[sd]{Autochanger}
+ \index[sd]{Directive!Autochanger}
+ If {\bf Yes}, this device belongs to an automatic tape changer, and you
+ must specify an {\bf Autochanger} resource that points to the {\bf
+ Device} resources. You must also specify a
+ {\bf Changer Device}. If the Autochanger directive is set to {\bf
+ No} (default), the volume must be manually changed. You should also
+ have an identical directive to the
+ \ilink{Storage resource}{Autochanger1} in the Director's
+ configuration file so that when labeling tapes you are prompted for the slot.
+
+\item [Changer Device = {\it name-string}]
+ \index[sd]{Changer Device}
+ \index[sd]{Directive!Changer Device}
+ The specified {\bf name-string} must be the {\bf generic SCSI} device
+ name of the autochanger that corresponds to the normal read/write
+ {\bf Archive Device} specified in the Device resource. This
+ generic SCSI device name should be specified if you have an autochanger
+ or if you have a standard tape drive and want to use the
+ {\bf Alert Command} (see below). For example, on Linux systems, for
+ an Archive Device name of {\bf /dev/nst0}, you would specify {\bf
+ /dev/sg0} for the Changer Device name. Depending on your exact
+ configuration, and the number of autochangers or the type of
+ autochanger, what you specify here can vary. This directive is
+ optional. See the \ilink{ Using Autochangers}{AutochangersChapter} chapter
+ of this manual for more details of using this and the following
+ autochanger directives.
+
+\item [Changer Command = {\it name-string}]
+ \index[sd]{Changer Command}
+ \index[sd]{Directive!Changer Command}
+ The {\bf name-string} specifies an external program to be called that will
+ automatically change volumes as required by {\bf Bacula}. Normally,
+ this directive will be specified only in the {\bf AutoChanger} resource,
+ which is then used for all devices. However, you may also specify
+ the different {\bf Changer Command} in each Device resource.
+ Most frequently,
+ you will specify the Bacula supplied {\bf mtx-changer} script as follows:
+
+\footnotesize
+\begin{verbatim}
+Changer Command = "/path/mtx-changer %c %o %S %a %d"
+\end{verbatim}
+\normalsize
+
+ and you will install the {\bf mtx} on your system (found in the {\bf depkgs}
+ release). An example of this command is in the default bacula-sd.conf file.
+ For more details on the substitution characters that may be specified to
+ configure your autochanger please see the
+ \ilink{Autochangers}{AutochangersChapter} chapter of this manual.
+ For FreeBSD users, you might want to see one of the several {\bf chio}
+ scripts in {\bf examples/autochangers}.
+
+\item [Alert Command = {\it name-string}]
+ \index[sd]{Alert Command}
+ The {\bf name-string} specifies an external program to be called at the
+ completion of each Job after the device is released. The purpose of this
+ command is to check for Tape Alerts, which are present when something is
+ wrong with your tape drive (at least for most modern tape drives). The same
+ substitution characters that may be specified in the Changer Command may
+ also be used in this string. For more information, please see the
+ \ilink{Autochangers}{AutochangersChapter} chapter of this manual.
+
+
+ Note, it is not necessary to have an autochanger to use this command. The
+ example below uses the {\bf tapeinfo} program that comes with the {\bf mtx}
+ package, but it can be used on any tape drive. However, you will need to
+ specify a {\bf Changer Device} directive in your Device resource (see above)
+ so that the generic SCSI device name can be edited into the command (with
+ the \%c).
+
+ An example of the use of this command to print Tape Alerts in the Job report
+ is:
+
+\footnotesize
+\begin{verbatim}
+Alert Command = "sh -c 'tapeinfo -f %c | grep TapeAlert'"
+
+\end{verbatim}
+\normalsize
+
+and an example output when there is a problem could be:
+
+\footnotesize
+\begin{verbatim}
+bacula-sd Alert: TapeAlert[32]: Interface: Problem with SCSI interface
+ between tape drive and initiator.
+
+\end{verbatim}
+\normalsize
+
+\item [Drive Index = {\it number}]
+ \index[sd]{Drive Index}
+ \index[sd]{Directive!Drive Index}
+ The {\bf Drive Index} that you specify is passed to the {\bf
+ mtx-changer} script and is thus passed to the {\bf mtx} program. By
+ default, the Drive Index is zero, so if you have only one drive in your
+ autochanger, everything will work normally. However, if you have
+ multiple drives, you must specify multiple Bacula Device resources (one
+ for each drive). The first Device should have the Drive Index set to 0,
+ and the second Device Resource should contain a Drive Index set to 1,
+ and so on. This will then permit you to use two or more drives in your
+ autochanger. As of Bacula version 1.38.0, using the {\bf Autochanger}
+ resource, Bacula will automatically ensure that only one drive at a time
+ uses the autochanger script, so you no longer need locking scripts as in
+ the past -- the default mtx-changer script works for any number of
+ drives.
+
+\item [Autoselect = {\it yes\vb{}no}]
+ \index[sd]{Autoselect}
+ \index[sd]{Directive!Autoselect}
+ If this directive is set to {\bf yes} (default), and the Device
+ belongs to an autochanger, then when the Autochanger is referenced
+ by the Director, this device can automatically be selected. If this
+ directive is set to {\bf no}, then the Device can only be referenced
+ by directly using the Device name in the Director. This is useful
+ for reserving a drive for something special such as a high priority
+ backup or restore operations.
+
+\item[Maximum Concurent Jobs = {\it num}]
+\index[sd]{MaximumConcurentJobs}
+
+{\bf Maximum Concurrent Jobs} is a directive that permits setting the maximum
+number of Jobs that can run concurrently on a specified Device. Using this
+directive, it is possible to have different Jobs using multiple drives, because
+when the Maximum Concurrent Jobs limit is reached, the Storage Daemon will
+start new Jobs on any other available compatible drive. This facilitates
+writing to multiple drives with multiple Jobs that all use the same Pool.
+
+\item [Maximum Changer Wait = {\it time}]
+ \index[sd]{Maximum Changer Wait}
+ \index[sd]{Directive!Maximum Changer Wait}
+ This directive specifies the maximum time in seconds for Bacula to wait
+ for an autochanger to change the volume. If this time is exceeded,
+ Bacula will invalidate the Volume slot number stored in the catalog and
+ try again. If no additional changer volumes exist, Bacula will ask the
+ operator to intervene. The default is 5 minutes.
+% TODO: if this is the format, then maybe "5 minutes" should be in
+% TODO: quotes? define style. see others.
+
+\item [Maximum Rewind Wait = {\it time}]
+ \index[sd]{Maximum Rewind Wait}
+ \index[sd]{Directive!Maximum Rewind Wait}
+ This directive specifies the maximum time in seconds for Bacula to wait
+ for a rewind before timing out. If this time is exceeded,
+ Bacula will cancel the job. The default is 5 minutes.
+
+\item [Maximum Open Wait = {\it time}]
+ \index[sd]{Maximum Open Wait}
+ \index[sd]{Directive!Maximum Open Wait}
+ This directive specifies the maximum time in seconds for Bacula to wait
+ for a open before timing out. If this time is exceeded,
+ Bacula will cancel the job. The default is 5 minutes.
+
+\item [Always Open = {\it yes\vb{}no}]
+ \index[sd]{Always Open}
+ \index[sd]{Directive!Always Open}
+ If {\bf Yes} (default), Bacula will always keep the device open unless
+ specifically {\bf unmounted} by the Console program. This permits
+ Bacula to ensure that the tape drive is always available, and properly
+ positioned. If you set
+ {\bf AlwaysOpen} to {\bf no} {\bf Bacula} will only open the drive when
+ necessary, and at the end of the Job if no other Jobs are using the
+ drive, it will be freed. The next time Bacula wants to append to a tape
+ on a drive that was freed, Bacula will rewind the tape and position it to
+ the end. To avoid unnecessary tape positioning and to minimize
+ unnecessary operator intervention, it is highly recommended that {\bf
+ Always Open = yes}. This also ensures that the drive is available when
+ Bacula needs it.
+
+ If you have {\bf Always Open = yes} (recommended) and you want to use the
+ drive for something else, simply use the {\bf unmount} command in the
+ Console program to release the drive. However, don't forget to remount the
+ drive with {\bf mount} when the drive is available or the next Bacula job
+ will block.
+
+ For File storage, this directive is ignored. For a FIFO storage device, you
+ must set this to {\bf No}.
+
+ Please note that if you set this directive to {\bf No} Bacula will release
+ the tape drive between each job, and thus the next job will rewind the tape
+ and position it to the end of the data. This can be a very time consuming
+ operation. In addition, with this directive set to no, certain multiple
+ drive autochanger operations will fail. We strongly recommend to keep
+ {\bf Always Open} set to {\bf Yes}
+
+\item [Volume Poll Interval = {\it time}]
+ \index[sd]{Volume Poll Interval}
+ \index[sd]{Directive!Volume Poll Interval}
+ If the time specified on this directive is non-zero, after asking the
+ operator to mount a new volume Bacula will periodically poll (or read) the
+ drive at the specified interval to see if a new volume has been mounted. If
+ the time interval is zero (the default), no polling will occur. This
+ directive can be useful if you want to avoid operator intervention via the
+ console. Instead, the operator can simply remove the old volume and insert
+ the requested one, and Bacula on the next poll will recognize the new tape
+ and continue. Please be aware that if you set this interval too small, you
+ may excessively wear your tape drive if the old tape remains in the drive,
+ since Bacula will read it on each poll. This can be avoided by ejecting the
+ tape using the {\bf Offline On Unmount} and the {\bf Close on Poll}
+ directives.
+ However, if you are using a Linux 2.6 kernel or other OSes
+ such as FreeBSD or Solaris, the Offline On Unmount will leave the drive
+ with no tape, and Bacula will not be able to properly open the drive and
+ may fail the job. For more information on this problem, please see the
+ \ilink{description of Offline On Unmount}{NoTapeInDrive} in the Tape
+ Testing chapter.
+
+\item [Close on Poll= {\it yes\vb{}no}]
+ \index[sd]{Close on Poll}
+ \index[sd]{Directive!Close on Poll}
+ If {\bf Yes}, Bacula close the device (equivalent to an unmount except no
+ mount is required) and reopen it at each poll. Normally this is not too
+ useful unless you have the {\bf Offline on Unmount} directive set, in which
+ case the drive will be taken offline preventing wear on the tape during any
+ future polling. Once the operator inserts a new tape, Bacula will recognize
+ the drive on the next poll and automatically continue with the backup.
+ Please see above more more details.
+
+\item [Maximum Open Wait = {\it time}]
+ \index[sd]{Maximum Open Wait}
+ \index[sd]{Directive!Maximum Open Wait}
+ This directive specifies the maximum amount of time in seconds that
+ Bacula will wait for a device that is busy. The default is 5 minutes.
+ If the device cannot be obtained, the current Job will be terminated in
+ error. Bacula will re-attempt to open the drive the next time a Job
+ starts that needs the the drive.
+
+\label{removablemedia}
+\item [Removable media = {\it yes\vb{}no}]
+ \index[sd]{Removable media}
+ \index[sd]{Directive!Removable media}
+ If {\bf Yes}, this device supports removable media (for example, tapes
+ or CDs). If {\bf No}, media cannot be removed (for example, an
+ intermediate backup area on a hard disk). If {\bf Removable media} is
+ enabled on a File device (as opposed to a tape) the Storage daemon will
+ assume that device may be something like a USB device that can be
+ removed or a simply a removable harddisk. When attempting to open
+ such a device, if the Volume is not found (for File devices, the Volume
+ name is the same as the Filename), then the Storage daemon will search
+ the entire device looking for likely Volume names, and for each one
+ found, it will ask the Director if the Volume can be used. If so,
+ the Storage daemon will use the first such Volume found. Thus it
+ acts somewhat like a tape drive -- if the correct Volume is not found,
+ it looks at what actually is found, and if it is an appendable Volume,
+ it will use it.
+
+ If the removable medium is not automatically mounted (e.g. udev), then
+ you might consider using additional Storage daemon device directives
+ such as {\bf Requires Mount}, {\bf Mount Point}, {\bf Mount Command},
+ and {\bf Unmount Command}, all of which can be used in conjunction with
+ {\bf Removable Media}.
+
+
+\item [Random access = {\it yes\vb{}no}]
+ \index[sd]{Random access}
+ \index[sd]{Directive!Random access}
+ If {\bf Yes}, the archive device is assumed to be a random access medium
+ which supports the {\bf lseek} (or {\bf lseek64} if Largefile is enabled
+ during configuration) facility. This should be set to {\bf Yes} for all
+ file systems such as DVD, USB, and fixed files. It should be set to
+ {\bf No} for non-random access devices such as tapes and named pipes.
+
+
+\item [Requires Mount = {\it yes\vb{}no}]
+ \index[sd]{Requires Mount }
+ When this directive is enabled, the Storage daemon will submit
+ a {\bf Mount Command} before attempting to open the device.
+ You must set this directive to {\bf yes} for DVD-writers and removable
+ file systems such as USB devices that are not automatically mounted
+ by the operating system when plugged in or opened by Bacula.
+ It should be set to {\bf no} for
+ all other devices such as tapes and fixed filesystems. It should also
+ be set to {\bf no} for any removable device that is automatically
+ mounted by the operating system when opened (e.g. USB devices mounted
+ by udev or hotplug). This directive
+ indicates if the device requires to be mounted using the {\bf Mount
+ Command}. To be able to write a DVD, the following directives must also
+ be defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount
+ Command} and {\bf Write Part Command}.
+
+\item [Mount Point = {\it directory}]
+ \index[sd]{Mount Point}
+ Directory where the device can be mounted.
+ This directive is used only
+ for devices that have {\bf Requires Mount} enabled such as DVD or
+ USB file devices.
+
+\item [Mount Command = {\it name-string}]
+ \index[sd]{Mount Command}
+ This directive specifies the command that must be executed to mount
+ devices such as DVDs and many USB devices. For DVDs, the
+ device is written directly, but the mount command is necessary in
+ order to determine the free space left on the DVD. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, for a DVD, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+However, if you have defined a mount point in /etc/fstab, you might be
+able to use a mount command such as:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount /media/dvd"
+\end{verbatim}
+\normalsize
+
+See the \ilink {Edit Codes}{mountcodes} section below for more details of
+the editing codes that can be used in this directive.
+
+ If you need to specify multiple commands, create a shell script.
+
+\item [Unmount Command = {\it name-string}]
+ \index[sd]{Unmount Command}
+ This directive specifies the command that must be executed to unmount
+ devices such as DVDs and many USB devices. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+See the \ilink {Edit Codes}{mountcodes} section below for more details of
+the editing codes that can be used in this directive.
+
+ If you need to specify multiple commands, create a shell script.
+
+\item[Block Checksum = {\it yes/no}]
+
+ You may turn off the Block Checksum (CRC32) code that Bacula uses when
+ writing blocks to a Volume. Doing so can reduce the Storage daemon CPU usage
+ slightly. It will also permit Bacula to read a Volume that has corrupted
+ data.
+
+ The default is {\bf yes} -- i.e. the checksum is computed on write and
+ checked on read.
+
+ \textbf{We do not recommend to turn this off} particularly on older tape
+ drives or for disk Volumes where doing so may allow corrupted data to go
+ undetected.
+
+\item [Minimum block size = {\it size-in-bytes}]
+ \index[sd]{Minimum block size}
+ \index[sd]{Directive!Minimum block size}
+ On most modern tape drives, you will not need or want to specify this
+ directive, and if you do so, it will be to make Bacula use fixed block
+ sizes. This statement applies only to non-random access devices (e.g.
+ tape drives). Blocks written by the storage daemon to a non-random
+ archive device will never be smaller than the given {\bf size-in-bytes}.
+ The Storage daemon will attempt to efficiently fill blocks with data
+ received from active sessions but will, if necessary, add padding to a
+ block to achieve the required minimum size.
+
+ To force the block size to be fixed, as is the case for some non-random
+ access devices (tape drives), set the {\bf Minimum block size} and the
+ {\bf Maximum block size} to the same value (zero included). The default
+ is that both the minimum and maximum block size are zero and the default
+ block size is 64,512 bytes.
+
+ For example, suppose you want a fixed block size of 100K bytes, then you
+ would specify:
+
+\footnotesize
+\begin{verbatim}
+
+ Minimum block size = 100K
+ Maximum block size = 100K
+
+\end{verbatim}
+\normalsize
+
+ Please note that if you specify a fixed block size as shown above, the tape
+ drive must either be in variable block size mode, or if it is in fixed block
+ size mode, the block size (generally defined by {\bf mt}) {\bf must} be
+ identical to the size specified in Bacula -- otherwise when you attempt to
+ re-read your Volumes, you will get an error.
+
+ If you want the block size to be variable but with a 64K minimum and 200K
+ maximum (and default as well), you would specify:
+
+\footnotesize
+\begin{verbatim}
+
+ Minimum block size = 64K
+ Maximum blocksize = 200K
+
+\end{verbatim}
+\normalsize
+
+\item [Maximum block size = {\it size-in-bytes}]
+ \index[sd]{Maximum block size}
+ \index[sd]{Directive!Maximum block size}
+ On most modern tape drives, you will not need to specify this directive.
+ If you do so, it will most likely be to use fixed block sizes (see
+ Minimum block size above). The Storage daemon will always attempt to
+ write blocks of the specified {\bf size-in-bytes} to the archive device.
+ As a consequence, this statement specifies both the default block size
+ and the maximum block size. The size written never exceed the given
+ {\bf size-in-bytes}. If adding data to a block would cause it to exceed
+ the given maximum size, the block will be written to the archive device,
+ and the new data will begin a new block.
+
+ If no value is specified or zero is specified, the Storage daemon will
+ use a default block size of 64,512 bytes (126 * 512).
+
+ The maximum {\bf size-in-bytes} possible is 2,000,000.
+
+\item [Hardware End of Medium = {\it yes\vb{}no}]
+ \index[sd]{Hardware End of Medium}
+ \index[sd]{Directive!Hardware End of Medium}
+ If {\bf No}, the archive device is not required to support end of medium
+ ioctl request, and the storage daemon will use the forward space file
+ function to find the end of the recorded data. If {\bf Yes}, the archive
+ device must support the {\tt ioctl} {\tt MTEOM} call, which will position
+ the tape to the end of the recorded data. In addition, your SCSI driver must
+ keep track of the file number on the tape and report it back correctly by
+ the {\bf MTIOCGET} ioctl. Note, some SCSI drivers will correctly forward
+ space to the end of the recorded data, but they do not keep track of the
+ file number. On Linux machines, the SCSI driver has a {\bf fast-eod}
+ option, which if set will cause the driver to lose track of the file
+ number. You should ensure that this option is always turned off using the
+ {\bf mt} program.
+
+ Default setting for Hardware End of Medium is {\bf Yes}. This function is
+ used before appending to a tape to ensure that no previously written data is
+ lost. We recommend if you have a non-standard or unusual tape drive that you
+ use the {\bf btape} program to test your drive to see whether or not it
+ supports this function. All modern (after 1998) tape drives support this
+ feature.
+
+\item [Fast Forward Space File = {\it yes\vb{}no}]
+ \index[sd]{Fast Forward Space File}
+ \index[sd]{Directive!Fast Forward Space File}
+ If {\bf No}, the archive device is not required to support keeping track of
+ the file number ({\bf MTIOCGET} ioctl) during forward space file. If {\bf
+ Yes}, the archive device must support the {\tt ioctl} {\tt MTFSF} call, which
+ virtually all drivers support, but in addition, your SCSI driver must keep
+ track of the file number on the tape and report it back correctly by the
+ {\bf MTIOCGET} ioctl. Note, some SCSI drivers will correctly forward space,
+ but they do not keep track of the file number or more seriously, they do not
+ report end of medium.
+
+ Default setting for Fast Forward Space File is {\bf Yes}.
+
+\item [Use MTIOCGET = {\it yes\vb{}no}]
+ \index[sd]{Use MTIOCGET}
+ \index[sd]{Directive!Use MTIOCGET}
+ If {\bf No}, the operating system is not required to support keeping track of
+ the file number and reporting it in the ({\bf MTIOCGET} ioctl). The default
+ is {\bf Yes}. If you must set this to No, Bacula will do the proper file
+ position determination, but it is very unfortunate because it means that
+ tape movement is very inefficient.
+ Fortunately, this operation system deficiency seems to be the case only
+ on a few *BSD systems. Operating systems known to work correctly are
+ Solaris, Linux and FreeBSD.
+
+\item [BSF at EOM = {\it yes\vb{}no}]
+ \index[sd]{BSF at EOM}
+ \index[sd]{Directive!BSF at EOM}
+ If {\bf No}, the default, no special action is taken by Bacula with the End
+ of Medium (end of tape) is reached because the tape will be positioned after
+ the last EOF tape mark, and Bacula can append to the tape as desired.
+ However, on some systems, such as FreeBSD, when Bacula reads the End of
+ Medium (end of tape), the tape will be positioned after the second EOF tape
+ mark (two successive EOF marks indicated End of Medium). If Bacula appends
+ from that point, all the appended data will be lost. The solution for such
+ systems is to specify {\bf BSF at EOM} which causes Bacula to backspace over
+ the second EOF mark. Determination of whether or not you need this directive
+ is done using the {\bf test} command in the {\bf btape} program.
+
+\item [TWO EOF = {\it yes\vb{}no}]
+ \index[sd]{TWO EOF}
+ \index[sd]{Directive!TWO EOF}
+ If {\bf Yes}, Bacula will write two end of file marks when terminating a
+ tape -- i.e. after the last job or at the end of the medium. If {\bf No},
+ the default, Bacula will only write one end of file to terminate the tape.
+
+\item [Backward Space Record = {\it yes\vb{}no}]
+ \index[sd]{Backward Space Record}
+ \index[sd]{Directive!Backward Space Record}
+ If {\it Yes}, the archive device supports the {\tt MTBSR ioctl} to backspace
+ records. If {\it No}, this call is not used and the device must be rewound
+ and advanced forward to the desired position. Default is {\bf Yes} for non
+ random-access devices. This function if enabled is used at the end of a
+ Volume after writing the end of file and any ANSI/IBM labels to determine
+ whether or not the last block was written correctly. If you turn this
+ function off, the test will not be done. This causes no harm as the re-read
+ process is precautionary rather than required.
+
+\item [Backward Space File = {\it yes\vb{}no}]
+ \index[sd]{Backward Space File}
+ \index[sd]{Directive!Backward Space File}
+ If {\it Yes}, the archive device supports the {\bf MTBSF} and {\bf MTBSF
+ ioctl}s to backspace over an end of file mark and to the start of a file. If
+ {\it No}, these calls are not used and the device must be rewound and
+ advanced forward to the desired position. Default is {\bf Yes} for non
+ random-access devices.
+
+\item [Forward Space Record = {\it yes\vb{}no}]
+ \index[sd]{Forward Space Record}
+ \index[sd]{Directive!Forward Space Record}
+ If {\it Yes}, the archive device must support the {\bf MTFSR ioctl} to
+ forward space over records. If {\bf No}, data must be read in order to
+ advance the position on the device. Default is {\bf Yes} for non
+ random-access devices.
+
+\item [Forward Space File = {\it yes\vb{}no}]
+ \index[sd]{Forward Space File}
+ \index[sd]{Directive!Forward Space File}
+ If {\bf Yes}, the archive device must support the {\tt MTFSF ioctl} to
+ forward space by file marks. If {\it No}, data must be read to advance the
+ position on the device. Default is {\bf Yes} for non random-access devices.
+
+\item [Offline On Unmount = {\it yes\vb{}no}]
+ \index[sd]{Offline On Unmount}
+ \index[sd]{Directive!Offline On Unmount}
+ The default for this directive is {\bf No}. If {\bf Yes} the archive device
+ must support the {\tt MTOFFL ioctl} to rewind and take the volume offline. In
+ this case, Bacula will issue the offline (eject) request before closing the
+ device during the {\bf unmount} command. If {\bf No} Bacula will not attempt
+ to offline the device before unmounting it. After an offline is issued, the
+ cassette will be ejected thus {\bf requiring operator intervention} to
+ continue, and on some systems require an explicit load command to be issued
+ ({\bf mt -f /dev/xxx load}) before the system will recognize the tape. If you
+ are using an autochanger, some devices require an offline to be issued prior
+ to changing the volume. However, most devices do not and may get very
+ confused.
+
+ If you are using a Linux 2.6 kernel or other OSes
+ such as FreeBSD or Solaris, the Offline On Unmount will leave the drive
+ with no tape, and Bacula will not be able to properly open the drive and
+ may fail the job. For more information on this problem, please see the
+ \ilink{description of Offline On Unmount}{NoTapeInDrive} in the Tape
+ Testing chapter.
+
+\item [Maximum Concurrent Jobs = \lt{}number\gt{}]
+ \index[sd]{Device Maximum Concurrent Jobs}
+ \index[sd]{Directive!Device Maximum Concurrent Jobs}
+ \index[sd]{Directive!New in 3.0.3}
+ where \lt{}number\gt{} is the maximum number of Jobs that can run
+ concurrently on a specified Device. Using this directive, it is possible
+ to have different Jobs using multiple drives, because when
+ the Maximum Concurrent Jobs limit is
+ reached, the Storage Daemon will start new Jobs on any other available
+ compatible drive. This facilitates writing to multiple drives with
+ multiple Jobs that all use the same Pool.
+
+\item [Maximum Volume Size = {\it size}]
+ \index[sd]{Maximum Volume Size}
+ \index[sd]{Directive!Maximum Volume Size}
+ No more than {\bf size} bytes will be written onto a given volume on the
+ archive device. This directive is used mainly in testing Bacula to
+ simulate a small Volume. It can also be useful if you wish to limit the
+ size of a File Volume to say less than 2GB of data. In some rare cases
+ of really antiquated tape drives that do not properly indicate when the
+ end of a tape is reached during writing (though I have read about such
+ drives, I have never personally encountered one). Please note, this
+ directive is deprecated (being phased out) in favor of the {\bf Maximum
+ Volume Bytes} defined in the Director's configuration file.
+
+\item [Maximum File Size = {\it size}]
+ \index[sd]{Maximum File Size}
+ \index[sd]{Directive!Maximum File Size}
+ No more than {\bf size} bytes will be written into a given logical file
+ on the volume. Once this size is reached, an end of file mark is
+ written on the volume and subsequent data are written into the next
+ file. Breaking long sequences of data blocks with file marks permits
+ quicker positioning to the start of a given stream of data and can
+ improve recovery from read errors on the volume. The default is one
+ Gigabyte. This directive creates EOF marks only on tape media.
+ However, regardless of the medium type (tape, disk, DVD, ...) each time
+ a the Maximum File Size is exceeded, a record is put into the catalog
+ database that permits seeking to that position on the medium for
+ restore operations. If you set this to a small value (e.g. 1MB),
+ you will generate lots of database records (JobMedia) and may
+ significantly increase CPU/disk overhead.
+
+ If you are configuring an LTO-3 or LTO-4 tape, you probably will
+ want to set the {\bf Maximum File Size} to 2GB to avoid making
+ the drive stop to write an EOF mark.
+
+ Note, this directive does not limit the size of Volumes that Bacula
+ will create regardless of whether they are tape or disk volumes. It
+ changes only the number of EOF marks on a tape and the number of
+ block positioning records (see below) that are generated. If you
+ want to limit the size of all Volumes for a particular device, use
+ the {\bf Maximum Volume Size} directive (above), or use the
+ {\bf Maximum Volume Bytes} directive in the Director's Pool resource,
+ which does the same thing but on a Pool (Volume) basis.
+
+\item [Block Positioning = {\it yes\vb{}no}]
+ \index[sd]{Block Positioning}
+ \index[sd]{Directive!Block Positioning}
+ This directive tells Bacula not to use block positioning when doing restores.
+ Turning this directive off can cause Bacula to be {\bf extremely} slow
+ when restoring files. You might use this directive if you wrote your
+ tapes with Bacula in variable block mode (the default), but your drive
+ was in fixed block mode. The default is {\bf yes}.
+
+\item [Maximum Network Buffer Size = {\it bytes}]
+ \index[sd]{Maximum Network Buffer Size}
+ \index[sd]{Directive!Maximum Network Buffer Size}
+ where {\it bytes} specifies the initial network buffer size to use with the
+ File daemon. This size will be adjusted down if it is too large until
+ it is accepted by the OS. Please use care in setting this value since if
+ it is too large, it will be trimmed by 512 bytes until the OS is happy,
+ which may require a large number of system calls. The default value is
+ 32,768 bytes.
+
+ The default size was chosen to be relatively large but not too big in
+ the case that you are transmitting data over Internet. It is clear that
+ on a high speed local network, you can increase this number and improve
+ performance. For example, some users have found that if you use a value
+ of 65,536 bytes they get five to ten times the throughput. Larger values for
+ most users don't seem to improve performance. If you are interested
+ in improving your backup speeds, this is definitely a place to
+ experiment. You will probably also want to make the corresponding change
+ in each of your File daemons conf files.
+
+
+\item [Maximum Spool Size = {\it bytes}]
+ \index[sd]{Maximum Spool Size}
+ \index[sd]{Directive!Maximum Spool Size}
+ where the bytes specify the maximum spool size for all jobs that are
+ running. The default is no limit.
+
+\item [Maximum Job Spool Size = {\it bytes}]
+ \index[sd]{Maximum Job Spool Size}
+ \index[sd]{Directive!Maximum Job Spool Size}
+ where the bytes specify the maximum spool size for any one job that is
+ running. The default is no limit.
+ This directive is implemented only in version 1.37 and later.
+
+\item [Spool Directory = {\it directory}]
+ \index[sd]{Spool Directory}
+ \index[sd]{Directive!Spool Directory}
+ specifies the name of the directory to be used to store the spool files for
+ this device. This directory is also used to store temporary part files when
+ writing to a device that requires mount (DVD). The default is to use the
+ working directory.
+
+\item [Maximum Part Size = {\it bytes}]
+ \index[sd]{Maximum Part Size}
+ \index[sd]{Directive!Maximum Part Size}
+ This is the maximum size of a volume part file. The default is no limit.
+ This directive is implemented only in version 1.37 and later.
+
+ If the device requires mount, it is transferred to the device when this size
+ is reached. In this case, you must take care to have enough disk space left
+ in the spool directory.
+
+ Otherwise, it is left on the hard disk.
+
+ It is ignored for tape and FIFO devices.
+
+
+\end{description}
+
+\label{mountcodes}
+\section{Edit Codes for Mount and Unmount Directives}
+\index[general]{Directives!Edit Codes}
+\index[general]{Edit Codes for Mount and Unmount Directives }
+
+Before submitting the {\bf Mount Command}, {\bf Unmount Command},
+{\bf Write Part Command}, or {\bf Free Space Command} directives
+to the operating system, Bacula performs character substitution of the
+following characters:
+
+\footnotesize
+\begin{verbatim}
+ %% = %
+ %a = Archive device name
+ %e = erase (set if cannot mount and first part)
+ %n = part number
+ %m = mount point
+ %v = last part name (i.e. filename)
+\end{verbatim}
+\normalsize
+
+
+\section{Devices that require a mount (DVD)}
+\index[general]{Devices that require a mount (DVD)}
+\index[general]{DVD!Devices that require a mount}
+
+All the directives in this section are implemented only in
+Bacula version 1.37 and later and hence are available in version 1.38.6.
+
+As of version 1.39.5, the directives
+"Requires Mount", "Mount Point", "Mount Command", and "Unmount Command"
+apply to removable filesystems such as USB in addition to DVD.
+
+\begin{description}
+
+\item [Requires Mount = {\it yes\vb{}no}]
+ \index[sd]{Requires Mount}
+ \index[sd]{Directive!Requires Mount}
+ You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
+ all other devices (tapes/files). This directive indicates if the device
+ requires to be mounted to be read, and if it must be written in a special way.
+ If it set, {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
+ {\bf Write Part Command} directives must also be defined.
+
+\item [Mount Point = {\it directory}]
+ \index[sd]{Mount Point}
+ \index[sd]{Directive!Mount Point}
+ Directory where the device can be mounted.
+
+\item [Mount Command = {\it name-string}]
+ \index[sd]{Mount Command}
+ \index[sd]{Directive!Mount Command}
+ Command that must be executed to mount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+For some media, you may need multiple commands. If so, it is recommended
+that you use a shell script instead of putting them all into the Mount
+Command. For example, instead of this:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/usr/local/bin/mymount"
+\end{verbatim}
+\normalsize
+
+Where that script contains:
+
+\footnotesize
+\begin{verbatim}
+#!/bin/sh
+ndasadmin enable -s 1 -o w
+sleep 2
+mount /dev/ndas-00323794-0p1 /backup
+\end{verbatim}
+\normalsize
+
+Similar consideration should be given to all other Command parameters.
+
+\item [Unmount Command = {\it name-string}]
+ \index[sd]{Unmount Command}
+ \index[sd]{Directive!Unmount Command}
+ Command that must be executed to unmount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+ If you need to specify multiple commands, create a shell script.
+
+\item [Write Part Command = {\it name-string}]
+ \index[sd]{Write Part Command}
+ \index[sd]{Directive!Write Part Command}
+ Command that must be executed to write a part to the device. Before the
+ command is executed, \%a is replaced with the Archive Device, \%m with the
+ Mount Point, \%e is replaced with 1 if we are writing the first part,
+ and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Write Part Command = "/path/dvd-handler %a write %e %v"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you need to specify multiple commands, create a shell script.
+
+
+\item [Free Space Command = {\it name-string}]
+ \index[sd]{Free Space Command}
+ \index[sd]{Directive!Free Space Command}
+ Command that must be executed to check how much free space is left on the
+ device. Before the command is executed,\%a is replaced with the Archive
+ Device, \%m with the Mount Point, \%e is replaced with 1 if we are writing
+ the first part, and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Free Space Command = "/path/dvd-handler %a free"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ If you want to specify your own command, please look at the code of
+ dvd-handler to see what output Bacula expects from this command.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you do not set it, Bacula will expect there is always free space on the
+ device.
+
+ If you need to specify multiple commands, create a shell script.
+
+\end{description}
+
+%% This pulls in the Autochanger resource from another file.
+\label{AutochangerRes}
+\label{AutochangerResource1}
+\input{autochangerres-en}
+
+
+
+
+\section{Capabilities}
+\index[general]{Capabilities}
+
+\begin{description}
+
+\item [Label media = {\it yes\vb{}no}]
+ \index[sd]{Label media}
+ \index[sd]{Directive!Label media}
+ If {\bf Yes}, permits this device to automatically label blank media
+ without an explicit operator command. It does so by using an internal
+ algorithm as defined on the \ilink{Label Format}{Label} record in each
+ Pool resource. If this is {\bf No} as by default, Bacula will label
+ tapes only by specific operator command ({\bf label} in the Console) or
+ when the tape has been recycled. The automatic labeling feature is most
+ useful when writing to disk rather than tape volumes.
+
+\item [Automatic mount = {\it yes\vb{}no}]
+ \index[sd]{Automatic mount}
+ \index[sd]{Directive!Automatic mount}
+ If {\bf Yes} (the default), permits the daemon to examine the device to
+ determine if it contains a Bacula labeled volume. This is done
+ initially when the daemon is started, and then at the beginning of each
+ job. This directive is particularly important if you have set
+ {\bf Always Open = no} because it permits Bacula to attempt to read the
+ device before asking the system operator to mount a tape. However,
+ please note that the tape must be mounted before the job begins.
+
+\end{description}
+
+\section{Messages Resource}
+\label{MessagesResource1}
+\index[general]{Resource!Messages}
+\index[general]{Messages Resource}
+
+For a description of the Messages Resource, please see the
+\ilink{Messages Resource}{MessagesChapter} Chapter of this
+manual.
+
+\section{Sample Storage Daemon Configuration File}
+\label{SampleConfiguration}
+\index[general]{File!Sample Storage Daemon Configuration}
+\index[general]{Sample Storage Daemon Configuration File}
+
+A example Storage Daemon configuration file might be the following:
+
+\footnotesize
+\begin{verbatim}
+#
+# Default Bacula Storage Daemon Configuration file
+#
+# For Bacula release 1.37.2 (07 July 2005) -- gentoo 1.4.16
+#
+# You may need to change the name of your tape drive
+# on the "Archive Device" directive in the Device
+# resource. If you change the Name and/or the
+# "Media Type" in the Device resource, please ensure
+# that bacula-dir.conf has corresponding changes.
+#
+Storage { # definition of myself
+ Name = rufus-sd
+ Address = rufus
+ WorkingDirectory = "$HOME/bacula/bin/working"
+ Pid Directory = "$HOME/bacula/bin/working"
+ Maximum Concurrent Jobs = 20
+}
+#
+# List Directors who are permitted to contact Storage daemon
+#
+Director {
+ Name = rufus-dir
+ Password = "ZF9Ctf5PQoWCPkmR3s4atCB0usUPg+vWWyIo2VS5ti6k"
+}
+#
+# Restricted Director, used by tray-monitor to get the
+# status of the storage daemon
+#
+Director {
+ Name = rufus-mon
+ Password = "9usxgc307dMbe7jbD16v0PXlhD64UVasIDD0DH2WAujcDsc6"
+ Monitor = yes
+}
+#
+# Devices supported by this Storage daemon
+# To connect, the Director's bacula-dir.conf must have the
+# same Name and MediaType.
+#
+Autochanger {
+ Name = Autochanger
+ Device = Drive-1
+ Device = Drive-2
+ Changer Command = "/home/kern/bacula/bin/mtx-changer %c %o %S %a %d"
+ Changer Device = /dev/sg0
+}
+
+Device {
+ Name = Drive-1 #
+ Drive Index = 0
+ Media Type = DLT-8000
+ Archive Device = /dev/nst0
+ AutomaticMount = yes; # when device opened, read it
+ AlwaysOpen = yes;
+ RemovableMedia = yes;
+ RandomAccess = no;
+ AutoChanger = yes
+ Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
+}
+
+Device {
+ Name = Drive-2 #
+ Drive Index = 1
+ Media Type = DLT-8000
+ Archive Device = /dev/nst1
+ AutomaticMount = yes; # when device opened, read it
+ AlwaysOpen = yes;
+ RemovableMedia = yes;
+ RandomAccess = no;
+ AutoChanger = yes
+ Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
+}
+
+Device {
+ Name = "HP DLT 80"
+ Media Type = DLT8000
+ Archive Device = /dev/nst0
+ AutomaticMount = yes; # when device opened, read it
+ AlwaysOpen = yes;
+ RemovableMedia = yes;
+}
+#Device {
+# Name = SDT-7000 #
+# Media Type = DDS-2
+# Archive Device = /dev/nst0
+# AutomaticMount = yes; # when device opened, read it
+# AlwaysOpen = yes;
+# RemovableMedia = yes;
+#}
+#Device {
+# Name = Floppy
+# Media Type = Floppy
+# Archive Device = /mnt/floppy
+# RemovableMedia = yes;
+# Random Access = Yes;
+# AutomaticMount = yes; # when device opened, read it
+# AlwaysOpen = no;
+#}
+#Device {
+# Name = FileStorage
+# Media Type = File
+# Archive Device = /tmp
+# LabelMedia = yes; # lets Bacula label unlabeled media
+# Random Access = Yes;
+# AutomaticMount = yes; # when device opened, read it
+# RemovableMedia = no;
+# AlwaysOpen = no;
+#}
+#Device {
+# Name = "NEC ND-1300A"
+# Media Type = DVD
+# Archive Device = /dev/hda
+# LabelMedia = yes; # lets Bacula label unlabeled media
+# Random Access = Yes;
+# AutomaticMount = yes; # when device opened, read it
+# RemovableMedia = yes;
+# AlwaysOpen = no;
+# MaximumPartSize = 800M;
+# RequiresMount = yes;
+# MountPoint = /mnt/cdrom;
+# MountCommand = "/bin/mount -t iso9660 -o ro %a %m";
+# UnmountCommand = "/bin/umount %m";
+# SpoolDirectory = /tmp/backup;
+# WritePartCommand = "/etc/bacula/dvd-handler %a write %e %v"
+# FreeSpaceCommand = "/etc/bacula/dvd-handler %a free"
+#}
+#
+# A very old Exabyte with no end of media detection
+#
+#Device {
+# Name = "Exabyte 8mm"
+# Media Type = "8mm"
+# Archive Device = /dev/nst0
+# Hardware end of medium = No;
+# AutomaticMount = yes; # when device opened, read it
+# AlwaysOpen = Yes;
+# RemovableMedia = yes;
+#}
+#
+# Send all messages to the Director,
+# mount messages also are sent to the email address
+#
+Messages {
+ Name = Standard
+ director = rufus-dir = all
+ operator = root = mount
+}
+\end{verbatim}
+\normalsize
projects / bacula / docs / blobdiff