The Restore Command

General

Below, we will discuss restoring files with the Console restore command, which is the recommended way of doing restoring files. It is not possible to restore files by automatically starting a job as you do with Backup, Verify, ... jobs. However, in addition to the console restore command, there is a standalone program named bextract, which also permits restoring files. For more information on this program, please see the bextract command in the Bacula Enterprise Utility Programs manual. We don't particularly recommend the bextract program because it lacks many of the features of the normal Bacula restore, such as the ability to restore Win32 files to Unix systems, and the ability to restore access control lists (ACL). As a consequence, we recommend, wherever possible to use Bacula itself for restores as described below.

You may also want to look at the bls program in the same chapter, which allows you to list the contents of your Volumes. Finally, if you have an old Volume that is no longer in the catalog, you can restore the catalog entries using the program named bscan, documented in the same bscan command in the Bacula Enterprise Utility Programs manual.

In general, to restore a file or a set of files, you must run a restore job. That is a job with Type = Restore. As a consequence, you will need a predefined restore job in your bacula-dir.conf (Director's config) file. The exact parameters (Client, FileSet, ...) that you define are not important as you can either modify them manually before running the job or if you use the restore command, explained below, Bacula will automatically set them for you. In fact, you can no longer simply run a restore job. You must use the restore command.

Since Bacula is a network backup program, you must be aware that when you restore files, it is up to you to ensure that you or Bacula have selected the correct Client and the correct hard disk location for restoring those files. Bacula will quite willingly backup client A, and restore it by sending the files to a different directory on client B. Normally, you will want to avoid this, but assuming the operating systems are not too different in their file structures, this should work perfectly well, if so desired. By default, Bacula will restore data to the same Client that was backed up, and those data will be restored not to the original places but to /tmp/bacula-restores. You may modify any of these defaults when the restore command prompts you to run the job by selecting the mod option.

The Restore Command

Since Bacula maintains a catalog of your files and on which Volumes (disk or tape), they are stored, it can do most of the bookkeeping work, allowing you simply to specify what kind of restore you want (current, before a particular date), and what files to restore. Bacula will then do the rest.

This is accomplished using the restore command in the Console. First you select the kind of restore you want, then the JobIds are selected, the File records for those Jobs are placed in an internal Bacula directory tree, and the restore enters a file selection mode that allows you to interactively walk up and down the file tree selecting individual files to be restored. This mode is somewhat similar to the standard Unix restore program's interactive file selection mode.

If a Job's file records have been pruned from the catalog, the restore command will be unable to find any files to restore. Bacula will ask if you want to restore all of them or if you want to use a regular expression to restore only a selection while reading media. See FileRegex option and below for more details on this.

Within the Console program, after entering the restore command, you are presented with the following selection prompt:

First you select one or more JobIds that contain files
to be restored. You will be presented several methods
of specifying the JobIds. Then you will be allowed to
select which files from those JobIds are to be restored.
To select the JobIds, you have the following choices:
     1: List last 20 Jobs run
     2: List Jobs where a given File is saved
     3: Enter list of comma separated JobIds to select
     4: Enter SQL list command
     5: Select the most recent backup for a client
     6: Select backup for a client before a specified time
     7: Enter a list of files to restore
     8: Enter a list of files to restore before a specified time
     9: Find the JobIds of the most recent backup for a client
    10: Find the JobIds for a backup for a client before a specified time
    11: Enter a list of directories to restore for found JobIds
    12: Select full restore to a specified Job date
    13: Select object to restore
    14: Cancel
Select item:  (1-14):

There are a lot of options, and as a point of reference, most people will want to slect item 5 (the most recent backup for a client). The details of the above options are:

• Item 1 will list the last 20 jobs run. If you find the Job you want, you can then select item 3 and enter its JobId(s).

• Item 2 will list all the Jobs where a specified file is saved. If you find the Job you want, you can then select item 3 and enter the JobId.

• Item 3 allows you the enter a list of comma separated JobIds whose files will be put into the directory tree. You may then select which files from those JobIds to restore. Normally, you would use this option if you have a particular version of a file that you want to restore and you know its JobId. The most common options (5 and 6) will not select a job that did not terminate normally, so if you know a file is backed up by a Job that failed (possibly because of a system crash), you can access it through this option by specifying the JobId.

• Item 4 allows you to enter any arbitrary SQL command. This is probably the most primitive way of finding the desired JobIds, but at the same time, the most flexible. Once you have found the JobId(s), you can select item 3 and enter them.

• Item 5 will automatically select the most recent Full backup and all subsequent incremental and differential backups for a specified Client. These are the Jobs and Files which, if reloaded, will restore your system to the most current saved state. It automatically enters the JobIds found into the directory tree in an optimal way such that only the most recent copy of any particular file found in the set of Jobs will be restored. This is probably the most convenient of all the above options to use if you wish to restore a selected Client to its most recent state.

  There are two important things to note. First, this automatic selection will never select a job that failed (terminated with an error status). If you have such a job and want to recover one or more files from it, you will need to explicitly enter the JobId in item 3, then choose the files to restore.

  If some of the Jobs that are needed to do the restore have had their File records pruned, the restore will be incomplete. Bacula currently does not correctly detect this condition. You can however, check for this by looking carefully at the list of Jobs that Bacula selects and prints. If you find Jobs with the JobFiles column set to zero, when files should have been backed up, then you should expect problems.

  If all the File records have been pruned, Bacula will realize that there are no file records in any of the JobIds chosen and will inform you. It will then propose doing a full restore (non-selective) of those JobIds. This is possible because Bacula still knows where the beginning of the Job data is on the Volumes, even if it does not know where particular files are located or what their names are.

• Item 6 allows you to specify a date and time, after which Bacula will automatically select the most recent Full backup and all subsequent incremental and differential backups that started before the specified date and time.

• Item 7 allows you to specify one or more filenames (complete path required) to be restored. Each filename is entered one at a time or if you prefix a filename with the less-than symbol (<) Bacula will read that file and assume it is a list of filenames to be restored. If you prefix the filename with a question mark (?), then the filename will be interpreted as an SQL table name, and Bacula will include the rows of that table in the list to be restored. The table must contain the JobId in the first column and the FileIndex in the second column. This table feature is intended for external programs that want to build their own list of files to be restored. The filename entry mode is terminated by entering a blank line.

• Item 8 allows you to specify a date and time before entering the filenames. See Item 7 above for more details.

• Item 9 allows you find the JobIds of the most recent backup for a client. This is much like option 5 (it uses the same code), but those JobIds are retained internally as if you had entered them manually. You may then select item 11 (see below) to restore one or more directories.

• Item 10 is the same as item 9, except that it allows you to enter a before date (as with item 6). These JobIds will then be retained internally.

• Item 11 allows you to enter a list of JobIds from which you can select directories to be restored. The list of JobIds can have been previously created by using either item 9 or 10 on the menu. You may then enter a full path to a directory name or a filename preceded by a less than sign (<). The filename should contain a list of directories to be restored. All files in those directories will be restored, but if the directory contains subdirectories, nothing will be restored in the subdirectory unless you explicitly enter its name.

• Item 12 allows you to restore choosen state of the Job.

• Item 13 allows you to enter menu to select object to be restored.

• Item 14 allows you to cancel the restore command.

As an example, suppose that we select item 5 (restore to most recent state). If you have not specified a client=xxx on the command line, it it will then ask for the desired Client, which on my system, will print all the Clients found in the database as follows:

Defined clients:
     1: Rufus
     2: Matou
     3: Polymatou
     4: Minimatou
     5: Minou
     6: MatouVerify
     7: PmatouVerify
     8: RufusVerify
     9: Watchdog
Select Client (File daemon) resource (1-9):

You will probably have far fewer Clients than this example, and if you have only one Client, it will be automatically selected. In this case, I enter Rufus to select the Client. Then Bacula needs to know what FileSet is to be restored, so it prompts with:

The defined FileSet resources are:
     1: Full Set
     2: Other Files
Select FileSet resource (1-2):

If you have only one FileSet defined for the Client, it will be selected automatically. I choose item 1, which is my full backup. Normally, you will only have a single FileSet for each Job, and if your machines are similar (all Linux) you may only have one FileSet for all your Clients.

At this point, Bacula has all the information it needs to find the most recent set of backups. It will then query the database, which may take a bit of time, and it will come up with something like the following. Note, some of the columns are truncated here for presentation:

+-------+------+----------+-------------+-------------+------+-------+------------+
| JobId | Levl | JobFiles | StartTime   | VolumeName  | File | SesId |VolSesTime  |
+-------+------+----------+-------------+-------------+------+-------+------------+
| 1,792 | F    |  128,374 | 08-03 01:58 | DLT-19Jul02 |   67 |    18 | 1028042998 |
| 1,792 | F    |  128,374 | 08-03 01:58 | DLT-04Aug02 |    0 |    18 | 1028042998 |
| 1,797 | I    |      254 | 08-04 13:53 | DLT-04Aug02 |    5 |    23 | 1028042998 |
| 1,798 | I    |       15 | 08-05 01:05 | DLT-04Aug02 |    6 |    24 | 1028042998 |
+-------+------+----------+-------------+-------------+------+-------+------------+
You have selected the following JobId: 1792,1792,1797
Building directory tree for JobId 1792 ...
Building directory tree for JobId 1797 ...
Building directory tree for JobId 1798 ...
cwd is: /
$

Depending on the number of JobFiles for each JobId, the Building directory tree ..." can take a bit of time. If you notice ath all the JobFiles are zero, your Files have probably been pruned and you will not be able to select any individual files - it will be restore everything or nothing.

In our example, Bacula found four Jobs that comprise the most recent backup of the specified Client and FileSet. Two of the Jobs have the same JobId because that Job wrote on two different Volumes. The third Job was an incremental backup to the previous Full backup, and it only saved 254 Files compared to 128,374 for the Full backup. The fourth Job was also an incremental backup that saved 15 files.

Next Bacula entered those Jobs into the directory tree, with no files marked to be restored as a default, tells you how many files are in the tree, and tells you that the current working directory (cwd) is /. Finally, Bacula prompts with the dollar sign ($) to indicate that you may enter commands to move around the directory tree and to select files.

If you want all the files to automatically be marked when the directory tree is built, you could have entered the command restore all, or at the $ prompt, you can simply enter mark *.

Instead of choosing item 5 on the first menu (Select the most recent backup for a client), if we had chosen item 3 (Enter list of JobIds to select) and we had entered the JobIds 1792,1797,1798 we would have arrived at the same point.

One point to note, if you are manually entering JobIds, is that you must enter them in the order they were run (generally in increasing JobId order). If you enter them out of order and the same file was saved in two or more of the Jobs, you may end up with an old version of that file (i.e. not the most recent).

Directly entering the JobIds can also permit you to recover data from a Job that wrote files to tape but that terminated with an error status.

While in file selection mode, you can enter help or a question mark (?) to produce a summary of the available commands:

 Command    Description
  =======    ===========
  cd         change current directory
  count      count marked files in and below the cd
  dir        long list current directory, wildcards allowed
  done       leave file selection mode
  du 
  estimate   estimate restore size
  exit       same as done command
  find       find files, wildcards allowed
  help       print help
  ls         list current directory, wildcards allowed
  lsmark     list the marked files in and below the cd
  mark       mark dir/file to be restored recursively in dirs
  markdir    mark directory name to be restored (no files)
  pwd        print current working directory
  unmark     unmark dir/file to be restored recursively in dir
  unmarkdir  unmark directory name only no recursion
  quit       quit and do not do restore
  ?          print help

As a default no files have been selected for restore (unless you added all to the command line. If you want to restore everything, at this point, you should enter mark *, and then done and Bacula will write the bootstrap records to a file and request your approval to start a restore job.

If you do not enter the above mentioned mark * command, you will start with an empty slate. Now you can simply start looking at the tree and mark particular files or directories you want restored. It is easy to make a mistake in specifying a file to mark or unmark, and Bacula's error handling is not perfect, so please check your work by using the ls or dir commands to see what files are actually selected. Any selected file has its name preceded by an asterisk.

To check what is marked or not marked, enter the count command, which displays:

128401 total files. 128401 marked to be restored.

Each of the above commands will be described in more detail in the next section. We continue with the above example, having accepted to restore all files as Bacula set by default. On entering the done command, Bacula prints:

Bootstrap records written to /home/kern/bacula/working/restore.bsr
The job will require the following
   Volume(s)                 Storage(s)                SD Device(s)
===========================================================================

   DLT-19Jul02               Tape                      DLT8000
   DLT-04Aug02               Tape                      DLT8000

128401 files selected to restore.
Run Restore job
JobName:    kernsrestore
Bootstrap:  /home/kern/bacula/working/restore.bsr
Where:      /tmp/bacula-restores
Replace:    always
FileSet:    Other Files
Client:     Rufus
Storage:    Tape
When:       2006-12-11 18:20:33
Catalog:    MyCatalog
Priority:   10
OK to run? (yes/mod/no):

Please examine each of the items very carefully to make sure that they are correct. In particular, look at Where, which tells you where in the directory structure the files will be restored, and Client, which tells you which client will receive the files. Note that by default the Client which will receive the files is the Client that was backed up. These items will not always be completed with the correct values depending on which of the restore options you chose. You can change any of these default items by entering mod and responding to the prompts.

The above assumes that you have defined a Restore Job resource in your Director's configuration file. Normally, you will only need one Restore Job resource definition because by its nature, restoring is a manual operation, and using the Console interface, you will be able to modify the Restore Job to do what you want.

An example Restore Job resource definition is given below.

Returning to the above example, you should verify that the Client name is correct before running the Job. However, you may want to modify some of the parameters of the restore job. For example, in addition to checking the Client it is wise to check that the Storage device chosen by Bacula is indeed correct. Although the FileSet is shown, it will be ignored in restore. The restore will choose the files to be restored either by reading the Bootstrap file, or if not specified, it will restore all files associated with the specified backup JobId (i.e. the JobId of the Job that originally backed up the files).

Finally before running the job, please note that the default location for restoring files is not their original locations, but rather the directory /tmp/bacula-restores. You can change this default by modifying your bacula-dir.conf file, or you can modify it using the mod option. If you want to restore the files to their original location, you must have Where set to nothing or to the root, i.e. /.

If you now enter yes, Bacula will run the restore Job. The Storage daemon will first request Volume DLT-19Jul02 and after the appropriate files have been restored from that volume, it will request Volume DLT-04Aug02.

Restore a pruned job using a pattern

During a restore, if all File records are pruned from the catalog for a Job, normally Bacula can restore only all files saved. That is there is no way using the catalog to select individual files. With this new feature, Bacula will ask if you want to specify a Regex expression for extracting only a part of the full backup.

  Building directory tree for JobId(s) 1,3 ...
  There were no files inserted into the tree, so file selection
  is not possible.Most likely your retention policy pruned the files

  Do you want to restore all the files? (yes|no): no

  Regexp matching files to restore? (empty to abort): /tmp/regress/(bin|tests)/
  Bootstrap records written to /tmp/regress/working/zog4-dir.restore.1.bsr

See also FileRegex bsr option for more information.

Selecting Files by Filename

If you have a small number of files to restore, and you know the filenames, you can either put the list of filenames in a file to be read by Bacula, or you can enter the names one at a time. The filenames must include the full path and filename. No wild cards are used.

To enter the files, after the restore, you select item number 7 from the prompt list:

To select the JobIds, you have the following choices:
     1: List last 20 Jobs run
     2: List Jobs where a given File is saved
     3: Enter list of comma separated JobIds to select
     4: Enter SQL list command
     5: Select the most recent backup for a client
     6: Select backup for a client before a specified time
     7: Enter a list of files to restore
     8: Enter a list of files to restore before a specified time
     9: Find the JobIds of the most recent backup for a client
    10: Find the JobIds for a backup for a client before a specified time
    11: Enter a list of directories to restore for found JobIds
    12: Cancel
Select item:  (1-12):

which then prompts you for the client name:

Defined Clients:
     1: Timmy
     2: Tibs
     3: Rufus
Select the Client (1-3): 3

Of course, your client list will be different, and if you have only one client, it will be automatically selected. And finally, Bacula requests you to enter a filename:

Enter filename:

At this point, you can enter the full path and filename

Enter filename: /home/kern/bacula/k/Makefile.in
Enter filename:

as you can see, it took the filename. If Bacula cannot find a copy of the file, it prints the following:

Enter filename: junk filename
No database record found for: junk filename
Enter filename:

If you want Bacula to read the filenames from a file, you simply precede the filename with a less-than symbol (<). When you have entered all the filenames, you enter a blank line, and Bacula will write the bootstrap file, tells you what tapes will be used, and proposes a Restore job to be run:

Enter filename:
Automatically selected Storage: DDS-4
Bootstrap records written to /home/kern/bacula/working/restore.bsr
The restore job will require the following Volumes:

   test1
1 file selected to restore.
Run Restore job
JobName:    kernsrestore
Bootstrap:  /home/kern/bacula/working/restore.bsr
Where:      /tmp/bacula-restores
Replace:    always
FileSet:    Other Files
Client:     Rufus
Storage:    DDS-4
When:       2003-09-11 10:20:53
Priority:   10
OK to run? (yes/mod/no):

It is possible to automate the selection by file by putting your list of files in say /tmp/file-list, then using the following command:

restore client=Rufus file=</tmp/file-list

If in modifying the parameters for the Run Restore job, you find that Bacula asks you to enter a Job number, this is because you have not yet specified either a Job number or a Bootstrap file. Simply entering zero will allow you to continue and to select another option to be modified.

Replace Options

When restoring, you have the option to specify a Replace option. This directive determines the action to be taken when restoring a file or directory that already exists. This directive can be set by selecting the mod option. You will be given a list of parameters to choose from. Full details on this option can be found in the Job Resource section of the Director documentation.

Command Line Arguments

If all the above sounds complicated, you will probably agree that it really isn't after trying it a few times. It is possible to do everything that was shown above, with the exception of selecting the FileSet, by using command line arguments with a single command by entering:

restore client=Rufus select current all done yes

The client=Rufus specification will automatically select Rufus as the client, the current tells Bacula that you want to restore the system to the most current state possible, the all selects all files, the done automatically finishes the file selection process, and the yes suppresses the final yes/mod/no prompt and simply runs the restore.

An example using a FileSet and a date specification:

restore client=Rufus fileset=Catalog before="2015-05-26 00:00:00" select all done yes

In this second example, the fileset tells Bacula which FileSet to use so you are not prompted for one, the before specifies a date and time to which the system should be restored. Notice that the current argument was removed in this example because it does not make sense when you are using the before argument to also specify “current"” as a date and time.

Also, when using the before argument, be aware that the select argument must come after it, otherise you will not get the results you expect.

If you wish to select specific files to restore rather than restoring the entire backup job, omit the all, done, and yes parameters and you will be taken to the interactive file selection prompt.

The full list of possible command line arguments is:

all

- select all Files to be restored.

select

- use the tree selection method.

done

- do not prompt the user in tree mode.

current

- automatically select the most current set of backups for the specified client.

client=xxxx

- initially specifies the client from which the backup was made and the client to which the restore will be make. See also "restoreclient" keyword.

restoreclient=xxxx

- if the keyword is specified, then the restore is written to that client.

jobid=nnn

- specify a JobId or comma separated list of JobIds to be restored.

before="YYYY-MM-DD HH:MM:SS"

- specify a date and time to which the system should be restored. Only Jobs started before the specified date/time will be selected, and as is the case for current Bacula will automatically find the most recent prior Full save and all Differential and Incremental saves run before the date you specify. Note, this command is not too user friendly in that you must specify the date/time exactly as shown.

file=filename

- specify a filename to be restored. You must specify the full path and filename. Prefixing the entry with a less-than sign (<) will cause Bacula to assume that the filename is on your system and contains a list of files to be restored. Bacula will thus read the list from that file. Multiple file=xxx specifications may be specified on the command line.

directory=path

- specify a directory to be restored. You must specify the full path. Prefixing the entry with a less-than sign (<) will cause Bacula to assume that the filename is on your system and contains a list of directories to be restored. Bacula will thus read the list from that file. Multiple directory=xxx specifications may be specified on the command line.

fileset=fileset-name

- Specify a FileSet to be restored.

jobid=nnn

- specify a JobId to be restored.

pool=pool-name

- specify a Pool name to be used for selection of Volumes when specifying options 5 and 6 (restore current system, and restore current system before given date). This permits you to have several Pools, possibly one offsite, and to select the Pool to be used for restoring.

where=/tmp/bacula-restores

- restore files in where directory.

yes

- automatically run the restore without prompting for modifications (most useful in batch scripts).

add_prefix=/test

- add a prefix to all files when restoring (like where) (can't be used with where=).

strip_prefix=/prod

- remove a part of the filename when restoring. We suggest to not select any file outside the "strip_prefix" and explicitly "unmark" parent directories when using strip_prefix and add_prefix together to relocate files.

add_suffix=.old

- add a suffix to all your files.

regexwhere=!a.pdf!a.bkp.pdf!

- do complex filename manipulation like with sed unix command. Will overwrite other filename manipulation.

restorejob=jobname

- Pre-chooses a restore job. Bacula can be configured with multiple restore jobs ("Type = Restore" in the job definition). This allows the specification of different restore properties, including a set of RunScripts. When more than one job of this type is configured, during restore, Bacula will ask for a user selection interactively, or use the given restorejob.

objectid=id

- specify an Object to be restored

Using File Relocation

Introduction

The where= option is simple, but not very powerful. With file relocation, Bacula can restore a file to the same directory, but with a different name, or in an other directory without recreating the full path.

You can also do filename and path manipulations, implemented in Bacula 2.1.8 or later, such as adding a suffix to all your files, renaming files or directories, etc. Theses options will overwrite where= option.

For example, many users use OS snapshot features so that file /home/eric/mbox will be backed up from the directory /.snap/home/eric/mbox, which can complicate restores. If you use where=/tmp, the file will be restored to /tmp/.snap/home/eric/mbox and you will have to move the file to /home/eric/mbox.bkp by hand.

However, case, you could use the strip_prefix=/.snap and add_suffix=.bkp options and Bacula will restore the file to its original location - that is /home/eric/mbox.

To use this feature, there are command line options as described in the restore section of this manual; you can modify your restore job before running it; or you can add options to your restore job in as described in bacula-dir.conf.

Parameters to modify:
     1: Level
     2: Storage
    ...
    10: File Relocation
    ...
Select parameter to modify (1-12):


This will replace your current Where value
     1: Strip prefix
     2: Add prefix
     3: Add file suffix
     4: Enter a regexp
     5: Test filename manipulation
     6: Use this ?
Select parameter to modify (1-6):

RegexWhere Format

The format is very close to that used by sed or Perl (s/replace this/by that/) operator. A valid regexwhere expression has three fields :

• a search expression (with optionnal submatch)
• a replacement expression (with optionnal back references $1 to $9)
• a set of search options (only case-insensitive “i” at this time)

Each field is delimited by a separator specified by the user as the first character of the expression. The separator can be one of the following:

<separator-keyword> = / ! ; % : , ~ # = &

You can use several expressions separated by a commas.

Examples

Restoring Directory Attributes

Depending how you do the restore, you may or may not get the directory entries back to their original state. Here are a few of the problems you can encounter, and for same machine restores, how to avoid them.

• You backed up on one machine and are restoring to another that is either a different OS or doesn't have the same users/groups defined. Bacula does the best it can in these situations. Note, Bacula has saved the user/groups in numeric form, which means on a different machine, they may map to different user/group names.

• You are restoring into a directory that is already created and has file creation restrictions. Bacula tries to reset everything but without walking up the full chain of directories and modifying them all during the restore, which Bacula does and will not do, getting permissions back correctly in this situation depends to a large extent on your OS.

• You are doing a recursive restore of a directory tree. In this case Bacula will restore a file before restoring the file's parent directory entry. In the process of restoring the file Bacula will create the parent directory with open permissions and ownership of the file being restored. Then when Bacula tries to restore the parent directory Bacula sees that it already exists (Similar to the previous situation). If you had set the Restore job's "Replace" property to "never" then Bacula will not change the directory's permissions and ownerships to match what it backed up, you should also notice that the actual number of files restored is less then the expected number. If you had set the Restore job's "Replace" property to "always" then Bacula will change the Directory's ownership and permissions to match what it backed up, also the actual number of files restored should be equal to the expected number.

• You selected one or more files in a directory, but did not select the directory entry to be restored. In that case, if the directory is not on disk Bacula simply creates the directory with some default attributes which may not be the same as the original. If you do not select a directory and all its contents to be restored, you can still select items within the directory to be restored by individually marking those files, but in that case, you should individually use the markdir command to select all higher level directory entries (one at a time) to be restored if you want the directory entries properly restored.

• The bextract program does not restore access control lists (ACLs) to Unix machines.

Restoring on Windows

If you are restoring on WinNT/2K/XP systems, Bacula will restore the files with the original ownerships and permissions as would be expected. This is also true if you are restoring those files to an alternate directory (using the Where option in restore). However, if the alternate directory does not already exist, the Bacula File daemon (Client) will try to create it. In some cases, it may not create the directories, and if it does since the File daemon runs under the SYSTEM account, the directory will be created with SYSTEM ownership and permissions. In this case, you may have problems accessing the newly restored files.

To avoid this problem, you should create any alternate directory before doing the restore. Bacula will not change the ownership and permissions of the directory if it is already created as long as it is not one of the directories being restored (i.e. written to tape).

The default restore location is /tmp/bacula-restores/ and if you are restoring from drive E:, the default will be /tmp/bacula-restores/e/, so you should ensure that this directory exists before doing the restore, or use the mod option to select a different where directory that does exist.

Some users have experienced problems restoring files that participate in the Active Directory. They also report that changing the userid under which Bacula (bacula-fd.exe) runs, from SYSTEM to a Domain Admin userid, resolves the problem.

Restoring Files Can Be Slow

Restoring files is generally much slower than backing them up for several reasons. The first is that during a backup the tape is normally already positioned and Bacula only needs to write. On the other hand, because restoring files is done so rarely, Bacula keeps only the start file and block on the tape for the whole job rather than on a file by file basis which would use quite a lot of space in the catalog.

Bacula will forward space to the correct file mark on the tape for the Job, then forward space to the correct block, and finally sequentially read each record until it gets to the correct one(s) for the file or files you want to restore. Once the desired files are restored, Bacula will stop reading the tape.

Finally, instead of just reading a file for backup, during the restore, Bacula must create the file, and the operating system must allocate disk space for the file as Bacula is restoring it.

For all the above reasons the restore process is generally much slower than backing up (sometimes it takes three times as long).

Problems Restoring Files

The most frequent problems users have restoring files are error messages such as:

04-Jan 00:33 z217-sd: RestoreFiles.2005-01-04_00.31.04 Error:
block.c:868 Volume data error at 20:0! Short block of 512 bytes on
device /dev/tape discarded.

or

04-Jan 00:33 z217-sd: RestoreFiles.2005-01-04_00.31.04 Error:
block.c:264 Volume data error at 20:0! Wanted ID: "BB02", got ".".
Buffer discarded.

Both these kinds of messages indicate that you were probably running your tape drive in fixed block mode rather than variable block mode. Fixed block mode will work with any program that reads tapes sequentially such as tar, but Bacula repositions the tape on a block basis when restoring files because this will speed up the restore by orders of magnitude when only a few files are being restored. There are several ways that you can attempt to recover from this unfortunate situation.

Try the following things, each separately, and reset your Device resource to what it is now after each individual test:

1. Set "Block Positioning = no" in your Device resource and try the restore. This is a new directive and untested.

2. Set "Minimum Block Size = 512" and "Maximum Block Size = 512" and try the restore. If you are able to determine the block size your drive was previously using, you should try that size if 512 does not work. This is a really horrible solution, and it is not at all recommended to continue backing up your data without correcting this condition. Please see the Tape Testing chapter for more on this.

3. Try editing the restore.bsr file at the Run xxx yes/mod/no prompt before starting the restore job and remove all the VolBlock statements. These are what causes Bacula to reposition the tape, and where problems occur if you have a fixed block size set for your drive. The VolFile commands also cause repositioning, but this will work regardless of the block size.

4. Use bextract to extract the files you want - it reads the Volume sequentially if you use the include list feature, or if you use a .bsr file, but remove all the VolBlock statements after the .bsr file is created (at the Run yes/mod/no) prompt but before you start the restore.

Restore Errors

There are a number of reasons why there may be restore errors or warning messages. Some of the more common ones are:

file count mismatch

This can occur for the following reasons:

• You requested Bacula not to overwrite existing or newer files.
• A Bacula miscount of files/directories. This is an on-going problem due to the complications of directories, soft/hard link, and such. Simply check that all the files you wanted were actually restored.

file size error

When Bacula restores files, it checks that the size of the restored file is the same as the file status data it saved when starting the backup of the file. If the sizes do not agree, Bacula will print an error message. This size mismatch most often occurs because the file was being written as Bacula backed up the file. In this case, the size that Bacula restored will be greater than the status size. This often happens with log files.

If the restored size is smaller, then you should be concerned about a possible tape error and check the Bacula output as well as your system logs.

Example Restore Job Resource

Job {
  Name = "RestoreFiles"
  Type = Restore
  Client = Any-client
  FileSet = "Any-FileSet"
  Storage = Any-storage
  Where = /tmp/bacula-restores
  Messages = Standard
  Pool = Default
}

If Where is not specified, the default location for restoring files will be their original locations.

File Selection Commands

After you have selected the Jobs to be restored and Bacula has created the in-memory directory tree, you will enter file selection mode as indicated by the dollar sign ($) prompt. While in this mode, you may use the commands listed above. The basic idea is to move up and down the in memory directory structure with the cd command much as you normally do on the system. Once you are in a directory, you may select the files that you want restored. As a default no files are marked to be restored. If you wish to start with all files, simply enter: cd / and mark *. Otherwise proceed to select the files you wish to restore by marking them with the mark command. The available commands are:

cd

The cd command changes the current directory to the argument specified. It operates much like the Unix cd command. Wildcard specifications are not permitted.

Note, on Windows systems, the various drives (c:, d:, ...) are treated like a directory within the file tree while in the file selection mode. As a consequence, you must do a cd c: or possibly in some cases a cd C: (note upper case) to get down to the first directory.

dir

The dir command is similar to the ls command, except that it prints it in long format (all details). This command can be a bit slower than the ls command because it must access the catalog database for the detailed information for each file.

estimate

The estimate command prints a summary of the total files in the tree, how many are marked to be restored, and an estimate of the number of bytes to be restored. This can be useful if you are short on disk space on the machine where the files will be restored.

find

The find command accepts one or more arguments and displays all files in the tree that match that argument. The argument may have wildcards. It is somewhat similar to the Unix command find / -name arg.

ls

The ls command produces a listing of all the files contained in the current directory much like the Unix ls command. You may specify an argument containing wildcards, in which case only those files will be listed.

Any file that is marked to be restored will have its name preceded by an asterisk (*). Directory names will be terminated with a forward slash (/) to distinguish them from filenames.

du

The du command is similar to the ls command but it also prints size of each file directory listed. For directory it is just a sum of all files sizes in all directories below.

lsmark

The lsmark command is the same as the ls except that it will print only those files marked for extraction. The other distinction is that it will recursively descend into any directory selected.

mark

The mark command allows you to mark files to be restored. It takes a single argument which is the filename or directory name in the current directory to be marked for extraction. The argument may be a wildcard specification, in which case all files that match in the current directory are marked to be restored. If the argument matches a directory rather than a file, then the directory and all the files contained in that directory (recursively) are marked to be restored. Any marked file will have its name preceded with an asterisk (*) in the output produced by the ls or dir commands. Note, supplying a full path on the mark command does not work as expected to select a file or directory in the current directory. Also, the mark command works on the current and lower directories but does not touch higher level directories.

After executing the mark command, it will print a brief summary:

    No files marked.

If no files were marked, or:

    nn files marked.

if some files are marked.

unmark

The unmark is identical to the mark command, except that it unmarks the specified file or files so that they will not be restored. Note: the unmark command works from the current directory, so it does not unmark any files at a higher level. First do a cd / before the unmark * command if you want to unmark everything.

pwd

The pwd command prints the current working directory. It accepts no arguments.

count

The count command prints the total files in the directory tree and the number of files marked to be restored.

done

This command terminates file selection mode.

exit

This command terminates file selection mode (the same as done).

quit

This command terminates the file selection and does not run the restore job.

help

This command prints a summary of the commands available.

?

This command is the same as the help command.

If your filename contains some weird caracters, you can use ?, * or \\. For example, if your filename contains a \, you can use \\\\.

* mark weird_file\\\\with-backslash

Restoring When Things Go Wrong

This and the following sections will try to present a few of the kinds of problems that can come up making restoring more difficult. We will try to provide a few ideas how to get out of these problem situations. In addition to what is presented here, there is more specific information on restoring a Client and your Server in the Disaster Recovery Using Bacula chapter of this manual.

Problem

My database is broken.

Solution

For either MySQL or PostgreSQL, see the vendor's documentation. They have specific tools that check and repair databases, see the database repair sections of this manual for links to vendor information.

Assuming the above does not resolve the problem, you will need to restore or rebuild your catalog. Note, if it is a matter of some inconsistencies in the Bacula tables rather than a broken database, then running the dbcheck commandnoteBacula Enterprise Utility Programs manual might help, but you will need to ensure that your database indexes are properly setup. Please see the Database Performance Issues sections of this manual for more details.

Problem

How do I restore my catalog?

Solution with a Catalog backup

If you have backed up your database nightly (as you should) and you have made a bootstrap file, you can immediately load back your database (or the ASCII SQL output). Make a copy of your current database, then re-initialize it, by running the following scripts:

./drop_bacula_tables
./make_bacula_tables

After re-initializing the database, you should be able to run Bacula. If you now try to use the restore command, it will not work because the database will be empty. However, you can manually run a restore job and specify your bootstrap file. You do so by entering the run command in the console and selecting the restore job. If you are using the default bacula-dir.conf, this Job will be named RestoreFiles. Most likely it will prompt you with something such as:

Run Restore job
JobName:    RestoreFiles
Bootstrap:  /home/kern/bacula/working/restore.bsr
Where:      /tmp/bacula-restores
Replace:    always
FileSet:    Full Set
Client:     rufus-fd
Storage:    File
When:       2005-07-10 17:33:40
Catalog:    MyCatalog
Priority:   10
OK to run? (yes/mod/no):

A number of the items will be different in your case. What you want to do is: to use the mod option to change the Bootstrap to point to your saved bootstrap file; and to make sure all the other items such as Client, Storage, Catalog, and Where are correct. The FileSet is not used when you specify a bootstrap file. Once you have set all the correct values, run the Job and it will restore the backup of your database, which is most likely an ASCII dump.

You will then need to follow the instructions for your database type to recreate the database from the ASCII backup file. See the Catalog Maintenance chapter of this manual for examples of the command needed to restore a database from an ASCII dump (they are shown in the Compacting Your XXX Database sections).

Also, please note that after you restore your database from an ASCII backup, you do NOT want to do a make_bacula_tables command, or you will probably erase your newly restored database tables.

Solution with a Job listing

If you did save your database but did not make a bootstrap file, then recovering the database is more difficult. You will probably need to use bextract to extract the backup copy. First you should locate the listing of the job report from the last catalog backup. It has important information that will allow you to quickly find your database file. For example, in the job report for the CatalogBackup shown below, the critical items are the Volume name(s), the Volume Session Id and the Volume Session Time. If you know those, you can easily restore your Catalog.

22-Apr 10:22 HeadMan: Start Backup JobId 7510,
Job=CatalogBackup.2005-04-22_01.10.0
22-Apr 10:23 HeadMan: \bacula{} 1.37.14 (21Apr05): 22-Apr-2005 10:23:06
  JobId:                  7510
  Job:                    CatalogBackup.2005-04-22_01.10.00
  Backup Level:           Full
  Client:                 Polymatou
  FileSet:                "CatalogFile" 2003-04-10 01:24:01
  Pool:                   "Default"
  Storage:                "DLTDrive"
  Start time:             22-Apr-2005 10:21:00
  End time:               22-Apr-2005 10:23:06
  FD Files Written:       1
  SD Files Written:       1
  FD Bytes Written:       210,739,395
  SD Bytes Written:       210,739,521
  Rate:                   1672.5 KB/s
  Software Compression:   None
  Volume name(s):         DLT-22Apr05
  Volume Session Id:      11
  Volume Session Time:    1114075126
  Last Volume Bytes:      1,428,240,465
  Non-fatal FD errors:    0
  SD Errors:              0
  FD termination status:  OK
  SD termination status:  OK
  Termination:            Backup OK

From the above information, you can manually create a bootstrap file, and then follow the instructions given above for restoring your database. A reconstructed bootstrap file for the above backup Job would look like the following:

Volume="DLT-22Apr05"
VolSessionId=11
VolSessionTime=1114075126
FileIndex=1-1

Where we have inserted the Volume name, Volume Session Id, and Volume Session Time that correspond to the values in the job report. We've also used a FileIndex of one, which will always be the case providing that there was only one file backed up in the job.

The disadvantage of this bootstrap file compared to what is created when you ask for one to be written, is that there is no File and Block specified, so the restore code must search all data in the Volume to find the requested file. A fully specified bootstrap file would have the File and Blocks specified as follows:

Volume="DLT-22Apr05"
VolSessionId=11
VolSessionTime=1114075126
VolFile=118-118
VolBlock=0-4053
FileIndex=1-1

Once you have restored the ASCII dump of the database, you will then to follow the instructions for your database type to recreate the database from the ASCII backup file. See the Catalog Maintenance chapter of this manual for examples of the command needed to restore a database from an ASCII dump (they are shown in the Compacting Your XXX Database sections).

Also, please note that after you restore your database from an ASCII backup, you do NOT want to do a make_bacula_tables command, or you will probably erase your newly restored database tables.

Solution without a Job Listing

If you do not have a job listing, then it is a bit more difficult. Either you use the bscan program to scan the contents of your tape into a database, which can be very time consuming depending on the size of the tape, or you can use the bls program to list everything on the tape, and reconstruct a bootstrap file from the bls listing for the file or files you want following the instructions given above.

There is a specific example of how to use bls below.

Problem

I try to restore the last known good full backup by specifying item 3 on the restore menu then the JobId to restore. Bacula then reports:

1 Job 0 Files

and restores nothing.

Solution

Most likely the File records were pruned from the database either due to the File Retention period expiring or by explicitly purging the Job. By using the llist jobid=nn command, you can obtain all the important information about the job:

llist jobid=120
           JobId: 120
             Job: save.2005-12-05_18.27.33
        Job.Name: save
     PurgedFiles: 0
            Type: B
           Level: F
    Job.ClientId: 1
     Client.Name: Rufus
       JobStatus: T
       SchedTime: 2005-12-05 18:27:32
       StartTime: 2005-12-05 18:27:35
         EndTime: 2005-12-05 18:27:37
        JobTDate: 1133803657
    VolSessionId: 1
  VolSessionTime: 1133803624
        JobFiles: 236
       JobErrors: 0
 JobMissingFiles: 0
      Job.PoolId: 4
       Pool.Name: Full
   Job.FileSetId: 1
 FileSet.FileSet: BackupSet

Then you can find the Volume(s) used by doing:

sql
select VolumeName from JobMedia,Media where JobId=1 and JobMedia.MediaId=Media.MediaId;

Finally, you can create a bootstrap file as described in the previous problem above using this information.

If you are using Bacula version 1.38.0 or greater, when you select item 3 from the menu and enter the JobId, it will ask you if you would like to restore all the files in the job, and it will collect the above information and write the bootstrap file for you.

Problem

You don't have a bootstrap file, and you don't have the Job report for the backup of your database, but you did backup the database, and you know the Volume to which it was backed up.

Solution

Either bscan the tape (see below for bscanning), or better use bls to find where it is on the tape, then use bextract to restore the database. For example,

./bls -j -V DLT-22Apr05 /dev/nst0

Might produce the following output:

bls: butil.c:258 Using device: "/dev/nst0" for reading.
21-Jul 18:34 bls: Ready to read from volume "DLT-22Apr05" on device "DLTDrive"
(/dev/nst0).
Volume Record: File:blk=0:0 SessId=11 SessTime=1114075126 JobId=0 DataLen=164
...
Begin Job Session Record: File:blk=118:0 SessId=11 SessTime=1114075126
JobId=7510
   Job=CatalogBackup.2005-04-22_01.10.0 Date=22-Apr-2005 10:21:00 Level=F Type=B
End Job Session Record: File:blk=118:4053 SessId=11 SessTime=1114075126
JobId=7510
   Date=22-Apr-2005 10:23:06 Level=F Type=B Files=1 Bytes=210,739,395 Errors=0
Status=T
...
21-Jul 18:34 bls: End of Volume at file 201 on device "DLTDrive" (/dev/nst0),
Volume "DLT-22Apr05"
21-Jul 18:34 bls: End of all volumes.

Of course, there will be many more records printed, but we have indicated the essential lines of output. From the information on the Begin Job and End Job Session Records, you can reconstruct a bootstrap file such as the one shown above.

Problem

How can I find where a file is stored.

Solution

Normally, it is not necessary, you just use the restore command to restore the most recently saved version (menu option 5), or a version saved before a given date (menu option 8). If you know the JobId of the job in which it was saved, you can use menu option 3 to enter that JobId.

If you would like to know the JobId where a file was saved, select restore menu option 2.

You can also use the query command to find information such as:

*query
Available queries:
     1: List up to 20 places where a File is saved regardless of the
directory
     2: List where the most recent copies of a file are saved
     3: List last 20 Full Backups for a Client
     4: List all backups for a Client after a specified time
     5: List all backups for a Client
     6: List Volume Attributes for a selected Volume
     7: List Volumes used by selected JobId
     8: List Volumes to Restore All Files
     9: List Pool Attributes for a selected Pool
    10: List total files/bytes by Job
    11: List total files/bytes by Volume
    12: List Files for a selected JobId
    13: List Jobs stored on a selected MediaId
    14: List Jobs stored for a given Volume name
    15: List Volumes \bacula{} thinks are in changer
    16: List Volumes likely to need replacement from age or errors
Choose a query (1-16):

Problem

I didn't backup my database. What do I do now?

Solution

This is probably the worst of all cases, and you will probably have to re-create your database from scratch and then bscan in all your Volumes, which is a very long, painful, and inexact process.

There are basically three steps to take:

1. Ensure that your SQL server is running (MySQL or PostgreSQL) and that the Bacula database (normally bacula) exists. See the Installation chapter of the manual.
2. Ensure that the Bacula databases are created. This is also described at the above link.
3. Start and stop the Bacula Director using the propriate bacula-dir.conf file so that it can create the Client and Storage records which are not stored on the Volumes. Without these records, scanning is unable to connect the Job records to the proper client.

When the above is complete, you can begin bscanning your Volumes. Please see the bscan section of the Bacula Enterprise Utility Programs manual.

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