Hello,

Thanks for submitting so many projects -- 25!

It is now your chance to vote on the priority of the projects that

you would like to see implemented. Each person gets to vote once.

Very important. Please send your vote to me directly (kern <at> sibbald.com)

with no other copies. If you want the list to know how you voted, please

send it in a different email. Please keep the subject unchanged -- Bacula Voting.

You can now vote for up to 10 different projects. I will weight the votes (10 points

for the first choice, 9 for the second, ...). The projects will then be reordered

in the Voting priority.

Priority: 1 | 2 | 3 | 4 | 5 |

----|------|------|-----|------|

Vote: | | | | |

Priority: 6 | 7 | 8 | 9 | 10 |

---|------|-----|------|------|

Vote: | | | | |

Please put your vote in the little boxes below the priority number. Priority 1

is the highest and priority 10 is the lowest.

Projects:

Bacula Projects Roadmap

29 November 2005

Summary:

Item 1: Implement Migration that moves Jobs from one Pool to another.

Item 2: Implement extraction of Win32 BackupWrite data.

Item 3: Implement a Bacula GUI/management tool using Python.

Item 4: Implement a Python interface to the Bacula catalog.

Item 5: Implement more Python events in Bacula.

Item 6: Implement Base jobs.

Item 7: Add Plug-ins to the FileSet Include statements.

Item 8: Implement huge exclude list support using hashing.

Item 9: Implement data encryption (as opposed to comm encryption)

Item 10: Permit multiple Media Types in an Autochanger

Item 11: Allow different autochanger definitions for one autochanger.

Item 12: Implement red/black binary tree routines.

Item 13: Improve Baculas tape and drive usage and cleaning management.

Item 14: Merge multiple backups (Synthetic Backup or Consolidation).

Item 15: Automatic disabling of devices

Item 16: Directive/mode to backup only file changes, not entire file

Item 17: Quick release of FD-SD connection after backup.

Item 18: Add support for FileSets in user directories CACHEDIR.TAG

Item 19: Implement new {Client}Run{Before|After}Job feature.

Item 20: Allow FD to initiate a backup

Item 21: Multiple threads in file daemon for the same job

Item 22: Archival (removal) of User Files to Tape

Item 23: Deletion of Disk-Based BaculaVolumes

Item 24: Accurate restoration of renamed/deleted files from

Item 25: Implement creation and maintenance of copy pools

Below, you will find more information on future projects:

Item 1: Implement Migration that moves Jobs from one Pool to another.

Origin: Sponsored by Riege Software International GmbH. Contact:

Daniel Holtkamp <holtkamp at riege dot com>

Date: 28 October 2005

Status: Partially coded in 1.37 -- much more to do. Assigned to

Kern.

What: The ability to copy, move, or archive data that is on a

device to another device is very important.

Why: An ISP might want to backup to disk, but after 30 days

migrate the data to tape backup and delete it from

disk. Bacula should be able to handle this

automatically. It needs to know what was put where,

and when, and what to migrate -- it is a bit like

retention periods. Doing so would allow space to be

freed up for current backups while maintaining older

data on tape drives.

Notes: Riege Software have asked for the following migration

triggers:

Age of Job

Highwater mark (stopped by Lowwater mark?)

Notes: Migration could be additionally triggered by:

Number of Jobs

Number of Volumes

Item 2: Implement extraction of Win32 BackupWrite data.

Origin: Thorsten Engel <thorsten.engel at matrix-computer dot com>

Date: 28 October 2005

Status: Assigned to Thorsten. Implemented in current CVS

What: This provides the Bacula File daemon with code that

can pick apart the stream output that Microsoft writes

for BackupWrite data, and thus the data can be read

and restored on non-Win32 machines.

Why: BackupWrite data is the portable=no option in Win32

FileSets, and in previous Baculas, this data could

only be extracted using a Win32 FD. With this new code,

the Windows data can be extracted and restored on

any OS.

Item 3: Implement a Bacula GUI/management tool using Python.

Origin: Kern

Date: 28 October 2005

Status:

What: Implement a Bacula console, and management tools

using Python and Qt or GTK.

Why: Don't we already have a wxWidgets GUI? Yes, but

it is written in C++ and changes to the user interface

must be hand tailored using C++ code. By developing

the user interface using Qt designer, the interface

can be very easily updated and most of the new Python

code will be automatically created. The user interface

changes become very simple, and only the new features

must be implement. In addition, the code will be in

Python, which will give many more users easy (or easier)

access to making additions or modifications.

Notes: This is currently being implemented using Python-GTK by

Lucas Di Pentima <lucas at lunix dot com dot ar>

Item 4: Implement a Python interface to the Bacula catalog.

Date: 28 October 2005

Origin: Kern

Status:

What: Implement an interface for Python scripts to access

the catalog through Bacula.

Why: This will permit users to customize Bacula through

Python scripts.

Item 5: Implement more Python events in Bacula.

Date: 28 October 2005

Origin:

Status:

What: Allow Python scripts to be called at more places

within Bacula and provide additional access to Bacula

internal variables.

Why: This will permit users to customize Bacula through

Python scripts.

Notes: Recycle event

Scratch pool event

NeedVolume event

MediaFull event

Also add a way to get a listing of currently running

jobs (possibly also scheduled jobs).

Item 6: Implement Base jobs.

Date: 28 October 2005

Origin: Kern

Status:

What: A base job is sort of like a Full save except that you

will want the FileSet to contain only files that are

unlikely to change in the future (i.e. a snapshot of

most of your system after installing it). After the

base job has been run, when you are doing a Full save,

you specify one or more Base jobs to be used. All

files that have been backed up in the Base job/jobs but

not modified will then be excluded from the backup.

During a restore, the Base jobs will be automatically

pulled in where necessary.

Why: This is something none of the competition does, as far as

we know (except perhaps BackupPC, which is a Perl program that

saves to disk only). It is big win for the user, it

makes Bacula stand out as offering a unique

optimization that immediately saves time and money.

Basically, imagine that you have 100 nearly identical

Windows or Linux machine containing the OS and user

files. Now for the OS part, a Base job will be backed

up once, and rather than making 100 copies of the OS,

there will be only one. If one or more of the systems

have some files updated, no problem, they will be

automatically restored.

Notes: Huge savings in tape usage even for a single machine.

Will require more resources because the DIR must send

FD a list of files/attribs, and the FD must search the

list and compare it for each file to be saved.

Item 7: Add Plug-ins to the FileSet Include statements.

Date: 28 October 2005

Origin:

Status: Partially coded in 1.37 -- much more to do.

What: Allow users to specify wild-card and/or regular

expressions to be matched in both the Include and

Exclude directives in a FileSet. At the same time,

allow users to define plug-ins to be called (based on

regular expression/wild-card matching).

Why: This would give the users the ultimate ability to control

how files are backed up/restored. A user could write a

plug-in knows how to backup his Oracle database without

stopping/starting it, for example.

Item 8: Implement huge exclude list support using hashing.

Date: 28 October 2005

Origin: Kern

Status:

What: Allow users to specify very large exclude list (currently

more than about 1000 files is too many).

Why: This would give the users the ability to exclude all

files that are loaded with the OS (e.g. using rpms

or debs). If the user can restore the base OS from

CDs, there is no need to backup all those files. A

complete restore would be to restore the base OS, then

do a Bacula restore. By excluding the base OS files, the

backup set will be *much* smaller.

Item 9: Implement data encryption (as opposed to comm encryption)

Date: 28 October 2005

Origin: Sponsored by Landon and 13 contributors to EFF.

Status: Landon Fuller is currently implementing this.

What: Currently the data that is stored on the Volume is not

encrypted. For confidentiality, encryption of data at

the File daemon level is essential.

Data encryption encrypts the data in the File daemon and

decrypts the data in the File daemon during a restore.

Why: Large sites require this.

Item 10: Permit multiple Media Types in an Autochanger

Origin: Kern

Status: Now implemented

What: Modify the Storage daemon so that multiple Media Types

can be specified in an autochanger. This would be somewhat

of a simplistic implementation in that each drive would

still be allowed to have only one Media Type. However,

the Storage daemon will ensure that only a drive with

the Media Type that matches what the Director specifies

is chosen.

Why: This will permit user with several different drive types

to make full use of their autochangers.

Item 11: Allow different autochanger definitions for one autochanger.

Date: 28 October 2005

Origin: Kern

Status:

What: Currently, the autochanger script is locked based on

the autochanger. That is, if multiple drives are being

simultaneously used, the Storage daemon ensures that only

one drive at a time can access the mtx-changer script.

This change would base the locking on the control device,

rather than the autochanger. It would then permit two autochanger

definitions for the same autochanger, but with different

drives. Logically, the autochanger could then be "partitioned"

for different jobs, clients, or class of jobs, and if the locking

is based on the control device (e.g. /dev/sg0) the mtx-changer

script will be locked appropriately.

Why: This will permit users to partition autochangers for specific

use. It would also permit implementation of multiple Media

Types with no changes to the Storage daemon.

Item 12: Implement red/black binary tree routines.

Date: 28 October 2005

Origin: Kern

Status:

What: Implement a red/black binary tree class. This could

then replace the current binary insert/search routines

used in the restore in memory tree. This could significantly

speed up the creation of the in memory restore tree.

Why: Performance enhancement.

Item 13: Improve Baculas tape and drive usage and cleaning management.

Date: 8 November 2005, November 11, 2005

Origin: Adam Thornton <athornton at sinenomine dot net>,

Arno Lehmann <al at its-lehmann dot de>

Status:

What: Make Bacula manage tape life cycle information, tape reuse

times and drive cleaning cycles.

Why: All three parts of this project are important when operating

backups.

We need to know which tapes need replacement, and we need to

make sure the drives are cleaned when necessary. While many

tape libraries and even autoloaders can handle all this

automatically, support by Bacula can be helpful for smaller

(older) libraries and single drives. Limiting the number of

times a tape is used might prevent tape errors when using

tapes until the drives can't read it any more. Also, checking

drive status during operation can prevent some failures (as I

[Arno] had to learn the hard way...)

Notes: First, Bacula could (and even does, to some limited extent)

record tape and drive usage. For tapes, the number of mounts,

the amount of data, and the time the tape has actually been

running could be recorded. Data fields for Read and Write

time and Number of mounts already exist in the catalog (I'm

not sure if VolBytes is the sum of all bytes ever written to

that volume by Bacula). This information can be important

when determining which media to replace. The ability to mark

Volumes as "used up" after a given number of write cycles

should also be implemented so that a tape is never actually

worn out. For the tape drives known to Bacula, similar

information is interesting to determine the device status and

expected life time: Time it's been Reading and Writing, number

of tape Loads / Unloads / Errors. This information is not yet

recorded as far as I [Arno] know. A new volume status would

be necessary for the new state, like "Used up" or "Worn out".

Volumes with this state could be used for restores, but not

for writing. These volumes should be migrated first (assuming

migration is implemented) and, once they are no longer needed,

could be moved to a Trash pool.

The next step would be to implement a drive cleaning setup.

Bacula already has knowledge about cleaning tapes. Once it

has some information about cleaning cycles (measured in drive

run time, number of tapes used, or calender days, for example)

it can automatically execute tape cleaning (with an

autochanger, obviously) or ask for operator assistance loading

a cleaning tape.

The final step would be to implement TAPEALERT checks not only

when changing tapes and only sending the information to the

administrator, but rather checking after each tape error,

checking on a regular basis (for example after each tape

file), and also before unloading and after loading a new tape.

Then, depending on the drives TAPEALERT state and the known

drive cleaning state Bacula could automatically schedule later

cleaning, clean immediately, or inform the operator.

Implementing this would perhaps require another catalog change

and perhaps major changes in SD code and the DIR-SD protocol,

so I'd only consider this worth implementing if it would

actually be used or even needed by many people.

Implementation of these projects could happen in three distinct

sub-projects: Measuring Tape and Drive usage, retiring

volumes, and handling drive cleaning and TAPEALERTs.

Item 14: Merge multiple backups (Synthetic Backup or Consolidation).

Origin: Marc Cousin and Eric Bollengier

Date: 15 November 2005

Status: Depends on first implementing project Item 1 (Migration).

What: A merged backup is a backup made without connecting to the Client.

It would be a Merge of existing backups into a single backup.

In effect, it is like a restore but to the backup medium.

For instance, say that last Sunday we made a full backup. Then

all week long, we created incremental backups, in order to do

them fast. Now comes Sunday again, and we need another full.

The merged backup makes it possible to do instead an incremental

backup (during the night for instance), and then create a merged

backup during the day, by using the full and incrementals from

the week. The merged backup will be exactly like a full made

Sunday night on the tape, but the production interruption on the

Client will be minimal, as the Client will only have to send

incrementals.

In fact, if it's done correctly, you could merge all the

Incrementals into single Incremental, or all the Incrementals

and the last Differential into a new Differential, or the Full,

last differential and all the Incrementals into a new Full

backup. And there is no need to involve the Client.

Why: The benefit is that :

- the Client just does an incremental ;

- the merged backup on tape is just as a single full backup,

and can be restored very fast.

This is also a way of reducing the backup data since the old

data can then be pruned (or not) from the catalog, possibly

allowing older volumes to be recycled

Item 15: Automatic disabling of devices

Date: 2005-11-11

Origin: Peter Eriksson <peter at ifm.liu dot se>

Status:

What: After a configurable amount of fatal errors with a tape drive

Bacula should automatically disable further use of a certain

tape drive. There should also be "disable"/"enable" commands in

the "bconsole" tool.

Why: On a multi-drive jukebox there is a possibility of tape drives

going bad during large backups (needing a cleaning tape run,

tapes getting stuck). It would be advantageous if Bacula would

automatically disable further use of a problematic tape drive

after a configurable amount of errors has occurred.

An example: I have a multi-drive jukebox (6 drives, 380+ slots)

where tapes occasionally get stuck inside the drive. Bacula will

notice that the "mtx-changer" command will fail and then fail

any backup jobs trying to use that drive. However, it will still

keep on trying to run new jobs using that drive and fail -

forever, and thus failing lots and lots of jobs... Since we have

many drives Bacula could have just automatically disabled

further use of that drive and used one of the other ones

instead.

Item 16: Directive/mode to backup only file changes, not entire file

Date: 11 November 2005

Origin: Joshua Kugler <joshua dot kugler at uaf dot edu>

Marek Bajon <mbajon at bimsplus dot com dot pl>

Status: RFC

What: Currently when a file changes, the entire file will be backed up in

the next incremental or full backup. To save space on the tapes

it would be nice to have a mode whereby only the changes to the

file would be backed up when it is changed.

Why: This would save lots of space when backing up large files such as

logs, mbox files, Outlook PST files and the like.

Notes: This would require the usage of disk-based volumes as comparing

files would not be feasible using a tape drive.

Item 17: Quick release of FD-SD connection after backup.

Origin: Frank Volf (frank at deze dot org)

Date: 17 November 2005

Status:

What: In the Bacula implementation a backup is finished after all data

and attributes are successfully written to storage. When using a

tape backup it is very annoying that a backup can take a day,

simply because the current tape (or whatever) is full and the

administrator has not put a new one in. During that time the

system cannot be taken off-line, because there is still an open

session between the storage daemon and the file daemon on the

client.

Although this is a very good strategy for making "safe backups"

This can be annoying for e.g. laptops, that must remain

connected until the backup is completed.

Using a new feature called "migration" it will be possible to

spool first to harddisk (using a special 'spool' migration

scheme) and then migrate the backup to tape.

There is still the problem of getting the attributes committed.

If it takes a very long time to do, with the current code, the

job has not terminated, and the File daemon is not freed up. The

Storage daemon should release the File daemon as soon as all the

file data and all the attributes have been sent to it (the SD).

Currently the SD waits until everything is on tape and all the

attributes are transmitted to the Director before signaling

completion to the FD. I don't think I would have any problem

changing this. The reason is that even if the FD reports back to

the Dir that all is OK, the job will not terminate until the SD

has done the same thing -- so in a way keeping the SD-FD link

open to the very end is not really very productive ...

Why: Makes backup of laptops much easier.

Item 18: Add support for FileSets in user directories CACHEDIR.TAG

Origin: Norbert Kiesel <nkiesel at tbdnetworks dot com>

Date: 21 November 2005

Status:

What: CACHDIR.TAG is a proposal for identifying directories which

should be ignored for archiving/backup. It works by ignoring

directory trees which have a file named CACHEDIR.TAG with a

specific content. See

http://www.brynosaurus.com/cachedir/spec.html

for details.

From Peter Eriksson:

I suggest that if this is implemented (I've also asked for this

feature some year ago) that it is made compatible with Legato

Networkers ".nsr" files where you can specify a lot of options on

how to handle files/directories (including denying further

parsing of .nsr files lower down into the directory trees). A

PDF version of the .nsr man page can be viewed at:

http://www.ifm.liu.se/~peter/nsr.pdf

Why: It's a nice alternative to "exclude" patterns for directories

which don't have regular pathnames. Also, it allows users to

control backup for themselves. Implementation should be pretty

simple. GNU tar >= 1.14 or so supports it, too.

Notes: I envision this as an optional feature to a fileset

specification.

Item 19: Implement new {Client}Run{Before|After}Job feature.

Date: 26 September 2005

Origin: Phil Stracchino <phil.stracchino at speakeasy dot net>

Status:

What: Some time ago, there was a discussion of RunAfterJob and

ClientRunAfterJob, and the fact that they do not run after failed

jobs. At the time, there was a suggestion to add a

RunAfterFailedJob directive (and, presumably, a matching

ClientRunAfterFailedJob directive), but to my knowledge these

were never implemented.

An alternate way of approaching the problem has just occurred to

me. Suppose the RunBeforeJob and RunAfterJob directives were

expanded in a manner something like this example:

RunBeforeJob {

Command = "/opt/bacula/etc/checkhost %c"

RunsOnClient = No

RunsAtJobLevels = All # All, Full, Diff, Inc

AbortJobOnError = Yes

}

RunBeforeJob {

Command = c:/bacula/systemstate.bat

RunsOnClient = yes

RunsAtJobLevels = All # All, Full, Diff, Inc

AbortJobOnError = No

}

RunAfterJob {

Command = c:/bacula/deletestatefile.bat

RunsOnClient = Yes

RunsAtJobLevels = All # All, Full, Diff, Inc

RunsOnSuccess = Yes

RunsOnFailure = Yes

}

RunAfterJob {

Command = c:/bacula/somethingelse.bat

RunsOnClient = Yes

RunsAtJobLevels = All

RunsOnSuccess = No

RunsOnFailure = Yes

}

RunAfterJob {

Command = "/opt/bacula/etc/checkhost -v %c"

RunsOnClient = No

RunsAtJobLevels = All

RunsOnSuccess = No

RunsOnFailure = Yes

}

Why: It would be a significant change to the structure of the

directives, but allows for a lot more flexibility, including

RunAfter commands that will run regardless of whether the job

succeeds, or RunBefore tasks that still allow the job to run even

if that specific RunBefore fails.

Notes: By Kern: I would prefer to have a single new Resource called

RunScript. More notes from Phil:

RunBeforeJob = yes|no

RunAfterJob = yes|no

RunsAtJobLevels = All|Full|Diff|Inc

The AbortJobOnError, RunsOnSuccess and RunsOnFailure directives

could be optional, and possibly RunsWhen as well.

AbortJobOnError would be ignored unless RunsWhen was set to Before

(or RunsBefore Job set to Yes), and would default to Yes if

omitted. If AbortJobOnError was set to No, failure of the script

would still generate a warning.

RunsOnSuccess would be ignored unless RunsWhen was set to After

(or RunsBeforeJob set to No), and default to Yes.

RunsOnFailure would be ignored unless RunsWhen was set to After,

and default to No.

Allow having the before/after status on the script command

line so that the same script can be used both before/after.

David Boyes.

Item 20: Allow FD to initiate a backup

Origin: Frank Volf (frank at deze dot org)

Date: 17 November 2005

Status:

What: Provide some means, possibly by a restricted console that

allows a FD to initiate a backup, and that uses the connection

established by the FD to the Director for the backup so that

a Director that is firewalled can do the backup.

Why: Makes backup of laptops much easier.

Item 21: Multiple threads in file daemon for the same job

Date: 27 November 2005

Origin: Ove Risberg (Ove.Risberg at octocode dot com)

Status:

What: I want the file daemon to start multiple threads for a backup

job so the fastest possible backup can be made.

The file daemon could parse the FileSet information and start

one thread for each File entry located on a separate

filesystem.

A configuration option in the job section should be used to

enable or disable this feature. The configuration option could

specify the maximum number of threads in the file daemon.

If the theads could spool the data to separate spool files

the restore process will not be much slower.

Why: Multiple concurrent backups of a large fileserver with many

disks and controllers will be much faster.

Notes: I am willing to try to implement this but I will probably

need some help and advice. (No problem -- Kern)

Item 22: Archival (removal) of User Files to Tape

Date: Nov. 24/2005

Origin: Ray Pengelly [ray at biomed dot queensu dot ca

Status:

What: The ability to archive data to storage based on certain parameters

such as age, size, or location. Once the data has been written to

storage and logged it is then pruned from the originating

filesystem. Note! We are talking about user's files and not

Bacula Volumes.

Why: This would allow fully automatic storage management which becomes

useful for large datastores. It would also allow for auto-staging

from one media type to another.

Example 1) Medical imaging needs to store large amounts of data.

They decide to keep data on their servers for 6 months and then put

it away for long term storage. The server then finds all files

older than 6 months writes them to tape. The files are then removed

from the server.

Example 2) All data that hasn't been accessed in 2 months could be

moved from high-cost, fibre-channel disk storage to a low-cost

large-capacity SATA disk storage pool which doesn't have as quick of

access time. Then after another 6 months (or possibly as one

storage pool gets full) data is migrated to Tape.

Item 23: Deletion of Disk-Based Bacula Volumes

Date: Nov 25, 2005

Origin: Ross Boylan <RossBoylan at stanfordalumni dot org> (edited

by Kern)

Status:

What: Provide a way for Bacula to automatically remove Volumes

from the filesystem, or optionally to truncate them.

Obviously, the Volume must be pruned prior removal.

Why: This would allow users more control over their Volumes and

prevent disk based volumes from consuming too much space.

Notes: The following two directives might do the trick:

Volume Data Retention = <time period>

Remove Volume After = <time period>

The migration project should also remove a Volume that is

migrated. This might also work for tape Volumes.

Item 24: Accurate restoration of renamed/deleted files from

Incremental/Differential backups

Date: 28 November 2005

Origin: Martin Simmons (martin at lispworks dot com)

Status:

What: When restoring a fileset for a specified date (including "most

recent"), Bacula should give you exactly the files and directories

that existed at the time of the last backup prior to that date.

Currently this only works if the last backup was a Full backup.

When the last backup was Incremental/Differential, files and

directories that have been renamed or deleted since the last Full

backup are not currently restored correctly. Ditto for files with

extra/fewer hard links than at the time of the last Full backup.

Why: Incremental/Differential would be much more useful if this worked.

Notes: Item 14 (Merging of multiple backups into a single one) seems to

rely on this working, otherwise the merged backups will not be

truely equivalent to a Full backup.

Kern: notes shortened. This can be done without the need for

inodes. It is essentially the same as the current Verify job,

but one additional database record must be written, which does

not need any database change.

Item 25: Implement creation and maintenance of copy pools

Date: 27 November 2005

Origin: David Boyes (dboyes at sinenomine dot net)

Status:

What: I would like Bacula to have the capability to write copies

of backed-up data on multiple physical volumes selected

from different pools without transferring the data

multiple times, and to accept any of the copy volumes

as valid for restore.

Why: In many cases, businesses are required to keep offsite

copies of backup volumes, or just wish for simple

protection against a human operator dropping a storage

volume and damaging it. The ability to generate multiple

volumes in the course of a single backup job allows

customers to simple check out one copy and send it

offsite, marking it as out of changer or otherwise

unavailable. Currently, the library and magazine

management capability in Bacula does not make this process

simple.

Restores would use the copy of the data on the first

available volume, in order of copy pool chain definition.

This is also a major scalability issue -- as the number of

clients increases beyond several thousand, and the volume

of data increases, transferring the data multiple times to

produce additional copies of the backups will become

physically impossible due to transfer speed

issues. Generating multiple copies at server side will

become the only practical option.

How: I suspect that this will require adding a multiplexing

SD that appears to be a SD to a specific FD, but 1-n FDs

to the specific back end SDs managing the primary and copy

pools. Storage pools will also need to acquire parameters

to define the pools to be used for copies.

Notes: I would commit some of my developers' time if we can agree

on the design and behavior.

============= Empty Feature Request form ===========

Item n: One line summary ...

Date: Date submitted

Origin: Name and email of originator.

Status:

What: More detailed explanation ...

Why: Why it is important ...

Notes: Additional notes or features (omit if not used)

============== End Feature Request form ==============

--

Best regards,

Kern

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