3 Bacula Projects Roadmap
4 Status updated 26 August 2008
9 Item 1: Accurate restoration of renamed/deleted files
10 Item 2: Allow FD to initiate a backup
11 Item 3: Merge multiple backups (Synthetic Backup or Consolidation)
12 Item 4: Implement Catalog directive for Pool resource in Director
13 Item 5: Add an item to the restore option where you can select a Pool
14 Item 6: Deletion of disk Volumes when pruned
15 Item 7: Implement Base jobs
16 Item 8: Implement Copy pools
17 Item 9: Scheduling syntax that permits more flexibility and options
18 Item 10: Message mailing based on backup types
19 Item 11: Cause daemons to use a specific IP address to source communications
20 Item 12: Add Plug-ins to the FileSet Include statements.
21 Item 13: Restore only file attributes (permissions, ACL, owner, group...)
22 Item 14: Add an override in Schedule for Pools based on backup types
23 Item 15: Implement more Python events and functions
24 Item 16: Allow inclusion/exclusion of files in a fileset by creation/mod times
25 Item 17: Automatic promotion of backup levels based on backup size
26 Item 18: Better control over Job execution
27 Item 19: Automatic disabling of devices
28 Item 20: An option to operate on all pools with update vol parameters
29 Item 21: Include timestamp of job launch in "stat clients" output
30 Item 22: Implement Storage daemon compression
31 Item 23: Improve Bacula's tape and drive usage and cleaning management
32 Item 24: Multiple threads in file daemon for the same job
33 Item 25: Archival (removal) of User Files to Tape
36 Item 1: Accurate restoration of renamed/deleted files
37 Date: 28 November 2005
38 Origin: Martin Simmons (martin at lispworks dot com)
41 What: When restoring a fileset for a specified date (including "most
42 recent"), Bacula should give you exactly the files and directories
43 that existed at the time of the last backup prior to that date.
45 Currently this only works if the last backup was a Full backup.
46 When the last backup was Incremental/Differential, files and
47 directories that have been renamed or deleted since the last Full
48 backup are not currently restored correctly. Ditto for files with
49 extra/fewer hard links than at the time of the last Full backup.
51 Why: Incremental/Differential would be much more useful if this worked.
53 Notes: Merging of multiple backups into a single one seems to
54 rely on this working, otherwise the merged backups will not be
55 truly equivalent to a Full backup.
57 Note: Kern: notes shortened. This can be done without the need for
58 inodes. It is essentially the same as the current Verify job,
59 but one additional database record must be written, which does
60 not need any database change.
62 Notes: Kern: see if we can correct restoration of directories if
63 replace=ifnewer is set. Currently, if the directory does not
64 exist, a "dummy" directory is created, then when all the files
65 are updated, the dummy directory is newer so the real values
68 Item 2: Allow FD to initiate a backup
69 Origin: Frank Volf (frank at deze dot org)
70 Date: 17 November 2005
73 What: Provide some means, possibly by a restricted console that
74 allows a FD to initiate a backup, and that uses the connection
75 established by the FD to the Director for the backup so that
76 a Director that is firewalled can do the backup.
78 Why: Makes backup of laptops much easier.
81 Item 3: Merge multiple backups (Synthetic Backup or Consolidation)
82 Origin: Marc Cousin and Eric Bollengier
83 Date: 15 November 2005
86 What: A merged backup is a backup made without connecting to the Client.
87 It would be a Merge of existing backups into a single backup.
88 In effect, it is like a restore but to the backup medium.
90 For instance, say that last Sunday we made a full backup. Then
91 all week long, we created incremental backups, in order to do
92 them fast. Now comes Sunday again, and we need another full.
93 The merged backup makes it possible to do instead an incremental
94 backup (during the night for instance), and then create a merged
95 backup during the day, by using the full and incrementals from
96 the week. The merged backup will be exactly like a full made
97 Sunday night on the tape, but the production interruption on the
98 Client will be minimal, as the Client will only have to send
101 In fact, if it's done correctly, you could merge all the
102 Incrementals into single Incremental, or all the Incrementals
103 and the last Differential into a new Differential, or the Full,
104 last differential and all the Incrementals into a new Full
105 backup. And there is no need to involve the Client.
107 Why: The benefit is that :
108 - the Client just does an incremental ;
109 - the merged backup on tape is just as a single full backup,
110 and can be restored very fast.
112 This is also a way of reducing the backup data since the old
113 data can then be pruned (or not) from the catalog, possibly
114 allowing older volumes to be recycled
116 Item 4: Implement Catalog directive for Pool resource in Director
117 Origin: Alan Davis adavis@ruckus.com
121 What: The current behavior is for the director to create all pools
122 found in the configuration file in all catalogs. Add a
123 Catalog directive to the Pool resource to specify which
124 catalog to use for each pool definition.
126 Why: This allows different catalogs to have different pool
127 attributes and eliminates the side-effect of adding
128 pools to catalogs that don't need/use them.
130 Notes: Kern: I think this is relatively easy to do, and it is really
131 a pre-requisite to a number of the Copy pool, ... projects
132 that are listed here.
134 Item 5: Add an item to the restore option where you can select a Pool
135 Origin: kshatriyak at gmail dot com
139 What: In the restore option (Select the most recent backup for a
140 client) it would be useful to add an option where you can limit
141 the selection to a certain pool.
143 Why: When using cloned jobs, most of the time you have 2 pools - a
144 disk pool and a tape pool. People who have 2 pools would like to
145 select the most recent backup from disk, not from tape (tape
146 would be only needed in emergency). However, the most recent
147 backup (which may just differ a second from the disk backup) may
148 be on tape and would be selected. The problem becomes bigger if
149 you have a full and differential - the most "recent" full backup
150 may be on disk, while the most recent differential may be on tape
151 (though the differential on disk may differ even only a second or
152 so). Bacula will complain that the backups reside on different
153 media then. For now the only solution now when restoring things
154 when you have 2 pools is to manually search for the right
155 job-id's and enter them by hand, which is a bit fault tolerant.
157 Notes: Kern: This is a nice idea. It could also be the way to support
158 Jobs that have been Copied (similar to migration, but not yet
163 Item 6: Deletion of disk Volumes when pruned
165 Origin: Ross Boylan <RossBoylan at stanfordalumni dot org> (edited
169 What: Provide a way for Bacula to automatically remove Volumes
170 from the filesystem, or optionally to truncate them.
171 Obviously, the Volume must be pruned prior removal.
173 Why: This would allow users more control over their Volumes and
174 prevent disk based volumes from consuming too much space.
176 Notes: The following two directives might do the trick:
178 Volume Data Retention = <time period>
179 Remove Volume After = <time period>
181 The migration project should also remove a Volume that is
182 migrated. This might also work for tape Volumes.
184 Item 7: Implement Base jobs
185 Date: 28 October 2005
189 What: A base job is sort of like a Full save except that you
190 will want the FileSet to contain only files that are
191 unlikely to change in the future (i.e. a snapshot of
192 most of your system after installing it). After the
193 base job has been run, when you are doing a Full save,
194 you specify one or more Base jobs to be used. All
195 files that have been backed up in the Base job/jobs but
196 not modified will then be excluded from the backup.
197 During a restore, the Base jobs will be automatically
198 pulled in where necessary.
200 Why: This is something none of the competition does, as far as
201 we know (except perhaps BackupPC, which is a Perl program that
202 saves to disk only). It is big win for the user, it
203 makes Bacula stand out as offering a unique
204 optimization that immediately saves time and money.
205 Basically, imagine that you have 100 nearly identical
206 Windows or Linux machine containing the OS and user
207 files. Now for the OS part, a Base job will be backed
208 up once, and rather than making 100 copies of the OS,
209 there will be only one. If one or more of the systems
210 have some files updated, no problem, they will be
211 automatically restored.
213 Notes: Huge savings in tape usage even for a single machine.
214 Will require more resources because the DIR must send
215 FD a list of files/attribs, and the FD must search the
216 list and compare it for each file to be saved.
219 Item 8: Implement Copy pools
220 Date: 27 November 2005
221 Origin: David Boyes (dboyes at sinenomine dot net)
224 What: I would like Bacula to have the capability to write copies
225 of backed-up data on multiple physical volumes selected
226 from different pools without transferring the data
227 multiple times, and to accept any of the copy volumes
228 as valid for restore.
230 Why: In many cases, businesses are required to keep offsite
231 copies of backup volumes, or just wish for simple
232 protection against a human operator dropping a storage
233 volume and damaging it. The ability to generate multiple
234 volumes in the course of a single backup job allows
235 customers to simple check out one copy and send it
236 offsite, marking it as out of changer or otherwise
237 unavailable. Currently, the library and magazine
238 management capability in Bacula does not make this process
241 Restores would use the copy of the data on the first
242 available volume, in order of Copy pool chain definition.
244 This is also a major scalability issue -- as the number of
245 clients increases beyond several thousand, and the volume
246 of data increases, transferring the data multiple times to
247 produce additional copies of the backups will become
248 physically impossible due to transfer speed
249 issues. Generating multiple copies at server side will
250 become the only practical option.
252 How: I suspect that this will require adding a multiplexing
253 SD that appears to be a SD to a specific FD, but 1-n FDs
254 to the specific back end SDs managing the primary and copy
255 pools. Storage pools will also need to acquire parameters
256 to define the pools to be used for copies.
258 Notes: I would commit some of my developers' time if we can agree
259 on the design and behavior.
261 Notes: Additional notes from David:
262 I think there's two areas where new configuration would be needed.
264 1) Identify a "SD mux" SD (specify it in the config just like a
265 normal SD. The SD configuration would need something like a
266 "Daemon Type = Normal/Mux" keyword to identify it as a
267 multiplexor. (The director code would need modification to add
268 the ability to do the multiple session setup, but the impact of
269 the change would be new code that was invoked only when a SDmux is
272 2) Additional keywords in the Pool definition to identify the need
273 to create copies. Each pool would acquire a Copypool= attribute
274 (may be repeated to generate more than one copy. 3 is about the
275 practical limit, but no point in hardcoding that).
282 Copypool = OffsiteCopy2
285 where Copy1 and OffsiteCopy2 are valid pools.
287 In terms of function (shorthand): Backup job X is defined
288 normally, specifying pool Primary as the pool to use. Job gets
289 scheduled, and Bacula starts scheduling resources. Scheduler
290 looks at pool definition for Primary, sees that there are a
291 non-zero number of copypool keywords. The director then connects
292 to an available SDmux, passes it the pool ids for Primary, Copy1,
293 and OffsiteCopy2 and waits. SDmux then goes out and reserves
294 devices and volumes in the normal SDs that serve Primary, Copy1
295 and OffsiteCopy2. When all are ready, the SDmux signals ready
296 back to the director, and the FD is given the address of the SDmux
297 as the SD to communicate with. Backup proceeds normally, with the
298 SDmux duplicating blocks to each connected normal SD, and
299 returning ready when all defined copies have been written. At
300 EOJ, FD shuts down connection with SDmux, which closes down the
301 normal SD connections and goes back to an idle state. SDmux does
302 not update database; normal SDs do (noting that file is present on
303 each volume it has been written to).
305 On restore, director looks for the volume containing the file in
306 pool Primary first, then Copy1, then OffsiteCopy2. If the volume
307 holding the file in pool Primary is missing or busy (being written
308 in another job, etc), or one of the volumes from the copypool list
309 that have the file in question is already mounted and ready for
310 some reason, use it to do the restore, else mount one of the
311 copypool volumes and proceed.
314 Item 9: Scheduling syntax that permits more flexibility and options
315 Date: 15 December 2006
316 Origin: Gregory Brauer (greg at wildbrain dot com) and
317 Florian Schnabel <florian.schnabel at docufy dot de>
320 What: Currently, Bacula only understands how to deal with weeks of the
321 month or weeks of the year in schedules. This makes it impossible
322 to do a true weekly rotation of tapes. There will always be a
323 discontinuity that will require disruptive manual intervention at
324 least monthly or yearly because week boundaries never align with
325 month or year boundaries.
327 A solution would be to add a new syntax that defines (at least)
328 a start timestamp, and repetition period.
330 An easy option to skip a certain job on a certain date.
333 Why: Rotated backups done at weekly intervals are useful, and Bacula
334 cannot currently do them without extensive hacking.
336 You could then easily skip tape backups on holidays. Especially
337 if you got no autochanger and can only fit one backup on a tape
338 that would be really handy, other jobs could proceed normally
339 and you won't get errors that way.
342 Notes: Here is an example syntax showing a 3-week rotation where full
343 Backups would be performed every week on Saturday, and an
344 incremental would be performed every week on Tuesday. Each
345 set of tapes could be removed from the loader for the following
346 two cycles before coming back and being reused on the third
347 week. Since the execution times are determined by intervals
348 from a given point in time, there will never be any issues with
349 having to adjust to any sort of arbitrary time boundary. In
350 the example provided, I even define the starting schedule
351 as crossing both a year and a month boundary, but the run times
352 would be based on the "Repeat" value and would therefore happen
357 Name = "Week 1 Rotation"
358 #Saturday. Would run Dec 30, Jan 20, Feb 10, etc.
362 Start = 2006-12-30 01:00
366 #Tuesday. Would run Jan 2, Jan 23, Feb 13, etc.
370 Start = 2007-01-02 01:00
377 Name = "Week 2 Rotation"
378 #Saturday. Would run Jan 6, Jan 27, Feb 17, etc.
382 Start = 2007-01-06 01:00
386 #Tuesday. Would run Jan 9, Jan 30, Feb 20, etc.
390 Start = 2007-01-09 01:00
397 Name = "Week 3 Rotation"
398 #Saturday. Would run Jan 13, Feb 3, Feb 24, etc.
402 Start = 2007-01-13 01:00
406 #Tuesday. Would run Jan 16, Feb 6, Feb 27, etc.
410 Start = 2007-01-16 01:00
416 Notes: Kern: I have merged the previously separate project of skipping
417 jobs (via Schedule syntax) into this.
420 Item 10: Message mailing based on backup types
421 Origin: Evan Kaufman <evan.kaufman@gmail.com>
422 Date: January 6, 2006
425 What: In the "Messages" resource definitions, allowing messages
426 to be mailed based on the type (backup, restore, etc.) and level
427 (full, differential, etc) of job that created the originating
430 Why: It would, for example, allow someone's boss to be emailed
431 automatically only when a Full Backup job runs, so he can
432 retrieve the tapes for offsite storage, even if the IT dept.
433 doesn't (or can't) explicitly notify him. At the same time, his
434 mailbox wouldnt be filled by notifications of Verifies, Restores,
435 or Incremental/Differential Backups (which would likely be kept
438 Notes: One way this could be done is through additional message types, for example:
441 # email the boss only on full system backups
442 Mail = boss@mycompany.com = full, !incremental, !differential, !restore,
444 # email us only when something breaks
445 MailOnError = itdept@mycompany.com = all
448 Notes: Kern: This should be rather trivial to implement.
451 Item 11: Cause daemons to use a specific IP address to source communications
452 Origin: Bill Moran <wmoran@collaborativefusion.com>
455 What: Cause Bacula daemons (dir, fd, sd) to always use the ip address
456 specified in the [DIR|DF|SD]Addr directive as the source IP
457 for initiating communication.
458 Why: On complex networks, as well as extremely secure networks, it's
459 not unusual to have multiple possible routes through the network.
460 Often, each of these routes is secured by different policies
461 (effectively, firewalls allow or deny different traffic depending
462 on the source address)
463 Unfortunately, it can sometimes be difficult or impossible to
464 represent this in a system routing table, as the result is
465 excessive subnetting that quickly exhausts available IP space.
466 The best available workaround is to provide multiple IPs to
467 a single machine that are all on the same subnet. In order
468 for this to work properly, applications must support the ability
469 to bind outgoing connections to a specified address, otherwise
470 the operating system will always choose the first IP that
471 matches the required route.
472 Notes: Many other programs support this. For example, the following
473 can be configured in BIND:
474 query-source address 10.0.0.1;
475 transfer-source 10.0.0.2;
476 Which means queries from this server will always come from
477 10.0.0.1 and zone transfers will always originate from
481 Item 12: Add Plug-ins to the FileSet Include statements.
482 Date: 28 October 2005
484 Status: Partially coded in 1.37 -- much more to do.
486 What: Allow users to specify wild-card and/or regular
487 expressions to be matched in both the Include and
488 Exclude directives in a FileSet. At the same time,
489 allow users to define plug-ins to be called (based on
490 regular expression/wild-card matching).
492 Why: This would give the users the ultimate ability to control
493 how files are backed up/restored. A user could write a
494 plug-in knows how to backup his Oracle database without
495 stopping/starting it, for example.
498 Item 13: Restore only file attributes (permissions, ACL, owner, group...)
499 Origin: Eric Bollengier
501 Status: Implemented by Eric, see project-restore-attributes-only.patch
503 What: The goal of this project is to be able to restore only rights
504 and attributes of files without crushing them.
506 Why: Who have never had to repair a chmod -R 777, or a wild update
507 of recursive right under Windows? At this time, you must have
508 enough space to restore data, dump attributes (easy with acl,
509 more complex with unix/windows rights) and apply them to your
510 broken tree. With this options, it will be very easy to compare
511 right or ACL over the time.
513 Notes: If the file is here, we skip restore and we change rights.
514 If the file isn't here, we can create an empty one and apply
515 rights or do nothing.
517 This will not work with win32 stream, because it seems that we
518 can't split the WriteBackup stream to get only ACL and ownerchip.
520 Item 14: Add an override in Schedule for Pools based on backup types
522 Origin: Chad Slater <chad.slater@clickfox.com>
525 What: Adding a FullStorage=BigTapeLibrary in the Schedule resource
526 would help those of us who use different storage devices for different
527 backup levels cope with the "auto-upgrade" of a backup.
529 Why: Assume I add several new devices to be backed up, i.e. several
530 hosts with 1TB RAID. To avoid tape switching hassles, incrementals are
531 stored in a disk set on a 2TB RAID. If you add these devices in the
532 middle of the month, the incrementals are upgraded to "full" backups,
533 but they try to use the same storage device as requested in the
534 incremental job, filling up the RAID holding the differentials. If we
535 could override the Storage parameter for full and/or differential
536 backups, then the Full job would use the proper Storage device, which
537 has more capacity (i.e. a 8TB tape library.
540 Item 15: Implement more Python events and functions
541 Date: 28 October 2005
545 What: Allow Python scripts to be called at more places
546 within Bacula and provide additional access to Bacula
549 Implement an interface for Python scripts to access the
550 catalog through Bacula.
552 Why: This will permit users to customize Bacula through
560 Also add a way to get a listing of currently running
561 jobs (possibly also scheduled jobs).
564 to start the appropriate job.
567 Item 16: Allow inclusion/exclusion of files in a fileset by creation/mod times
568 Origin: Evan Kaufman <evan.kaufman@gmail.com>
569 Date: January 11, 2006
572 What: In the vein of the Wild and Regex directives in a Fileset's
573 Options, it would be helpful to allow a user to include or exclude
574 files and directories by creation or modification times.
576 You could factor the Exclude=yes|no option in much the same way it
577 affects the Wild and Regex directives. For example, you could exclude
578 all files modified before a certain date:
582 Modified Before = ####
585 Or you could exclude all files created/modified since a certain date:
589 Created Modified Since = ####
592 The format of the time/date could be done several ways, say the number
593 of seconds since the epoch:
594 1137008553 = Jan 11 2006, 1:42:33PM # result of `date +%s`
596 Or a human readable date in a cryptic form:
597 20060111134233 = Jan 11 2006, 1:42:33PM # YYYYMMDDhhmmss
599 Why: I imagine a feature like this could have many uses. It would
600 allow a user to do a full backup while excluding the base operating
601 system files, so if I installed a Linux snapshot from a CD yesterday,
602 I'll *exclude* all files modified *before* today. If I need to
603 recover the system, I use the CD I already have, plus the tape backup.
604 Or if, say, a Windows client is hit by a particularly corrosive
605 virus, and I need to *exclude* any files created/modified *since* the
608 Notes: Of course, this feature would work in concert with other
609 in/exclude rules, and wouldnt override them (or each other).
611 Notes: The directives I'd imagine would be along the lines of
612 "[Created] [Modified] [Before|Since] = <date>".
613 So one could compare against 'ctime' and/or 'mtime', but ONLY 'before'
617 Item 17: Automatic promotion of backup levels based on backup size
618 Date: 19 January 2006
619 Origin: Adam Thornton <athornton@sinenomine.net>
622 What: Amanda has a feature whereby it estimates the space that a
623 differential, incremental, and full backup would take. If the
624 difference in space required between the scheduled level and the next
625 level up is beneath some user-defined critical threshold, the backup
626 level is bumped to the next type. Doing this minimizes the number of
627 volumes necessary during a restore, with a fairly minimal cost in
630 Why: I know at least one (quite sophisticated and smart) user
631 for whom the absence of this feature is a deal-breaker in terms of
632 using Bacula; if we had it it would eliminate the one cool thing
633 Amanda can do and we can't (at least, the one cool thing I know of).
636 Item 18: Better control over Job execution
641 What: Bacula needs a few extra features for better Job execution:
642 1. A way to prevent multiple Jobs of the same name from
643 being scheduled at the same time (ususally happens when
644 a job is missed because a client is down).
645 2. Directives that permit easier upgrading of Job types
646 based on a period of time. I.e. "do a Full at least
647 once every 2 weeks", or "do a differential at least
648 once a week". If a lower level job is scheduled when
649 it begins to run it will be upgraded depending on
650 the specified criteria.
655 Item 19: Automatic disabling of devices
657 Origin: Peter Eriksson <peter at ifm.liu dot se>
660 What: After a configurable amount of fatal errors with a tape drive
661 Bacula should automatically disable further use of a certain
662 tape drive. There should also be "disable"/"enable" commands in
665 Why: On a multi-drive jukebox there is a possibility of tape drives
666 going bad during large backups (needing a cleaning tape run,
667 tapes getting stuck). It would be advantageous if Bacula would
668 automatically disable further use of a problematic tape drive
669 after a configurable amount of errors has occurred.
671 An example: I have a multi-drive jukebox (6 drives, 380+ slots)
672 where tapes occasionally get stuck inside the drive. Bacula will
673 notice that the "mtx-changer" command will fail and then fail
674 any backup jobs trying to use that drive. However, it will still
675 keep on trying to run new jobs using that drive and fail -
676 forever, and thus failing lots and lots of jobs... Since we have
677 many drives Bacula could have just automatically disabled
678 further use of that drive and used one of the other ones
681 Item 20: An option to operate on all pools with update vol parameters
682 Origin: Dmitriy Pinchukov <absh@bossdev.kiev.ua>
684 Status: Patch made by Nigel Stepp
686 What: When I do update -> Volume parameters -> All Volumes
687 from Pool, then I have to select pools one by one. I'd like
688 console to have an option like "0: All Pools" in the list of
691 Why: I have many pools and therefore unhappy with manually
692 updating each of them using update -> Volume parameters -> All
693 Volumes from Pool -> pool #.
696 Item 21: Include timestamp of job launch in "stat clients" output
697 Origin: Mark Bergman <mark.bergman@uphs.upenn.edu>
698 Date: Tue Aug 22 17:13:39 EDT 2006
701 What: The "stat clients" command doesn't include any detail on when
702 the active backup jobs were launched.
704 Why: Including the timestamp would make it much easier to decide whether
705 a job is running properly.
707 Notes: It may be helpful to have the output from "stat clients" formatted
708 more like that from "stat dir" (and other commands), in a column
709 format. The per-client information that's currently shown (level,
710 client name, JobId, Volume, pool, device, Files, etc.) is good, but
711 somewhat hard to parse (both programmatically and visually),
712 particularly when there are many active clients.
716 Item 22: Implement Storage daemon compression
717 Date: 18 December 2006
718 Origin: Vadim A. Umanski , e-mail umanski@ext.ru
720 What: The ability to compress backup data on the SD receiving data
721 instead of doing that on client sending data.
722 Why: The need is practical. I've got some machines that can send
723 data to the network 4 or 5 times faster than compressing
724 them (I've measured that). They're using fast enough SCSI/FC
725 disk subsystems but rather slow CPUs (ex. UltraSPARC II).
726 And the backup server has got a quite fast CPUs (ex. Dual P4
727 Xeons) and quite a low load. When you have 20, 50 or 100 GB
728 of raw data - running a job 4 to 5 times faster - that
729 really matters. On the other hand, the data can be
730 compressed 50% or better - so losing twice more space for
731 disk backup is not good at all. And the network is all mine
732 (I have a dedicated management/provisioning network) and I
733 can get as high bandwidth as I need - 100Mbps, 1000Mbps...
734 That's why the server-side compression feature is needed!
737 Item 23: Improve Bacula's tape and drive usage and cleaning management
738 Date: 8 November 2005, November 11, 2005
739 Origin: Adam Thornton <athornton at sinenomine dot net>,
740 Arno Lehmann <al at its-lehmann dot de>
743 What: Make Bacula manage tape life cycle information, tape reuse
744 times and drive cleaning cycles.
746 Why: All three parts of this project are important when operating
748 We need to know which tapes need replacement, and we need to
749 make sure the drives are cleaned when necessary. While many
750 tape libraries and even autoloaders can handle all this
751 automatically, support by Bacula can be helpful for smaller
752 (older) libraries and single drives. Limiting the number of
753 times a tape is used might prevent tape errors when using
754 tapes until the drives can't read it any more. Also, checking
755 drive status during operation can prevent some failures (as I
756 [Arno] had to learn the hard way...)
758 Notes: First, Bacula could (and even does, to some limited extent)
759 record tape and drive usage. For tapes, the number of mounts,
760 the amount of data, and the time the tape has actually been
761 running could be recorded. Data fields for Read and Write
762 time and Number of mounts already exist in the catalog (I'm
763 not sure if VolBytes is the sum of all bytes ever written to
764 that volume by Bacula). This information can be important
765 when determining which media to replace. The ability to mark
766 Volumes as "used up" after a given number of write cycles
767 should also be implemented so that a tape is never actually
768 worn out. For the tape drives known to Bacula, similar
769 information is interesting to determine the device status and
770 expected life time: Time it's been Reading and Writing, number
771 of tape Loads / Unloads / Errors. This information is not yet
772 recorded as far as I [Arno] know. A new volume status would
773 be necessary for the new state, like "Used up" or "Worn out".
774 Volumes with this state could be used for restores, but not
775 for writing. These volumes should be migrated first (assuming
776 migration is implemented) and, once they are no longer needed,
777 could be moved to a Trash pool.
779 The next step would be to implement a drive cleaning setup.
780 Bacula already has knowledge about cleaning tapes. Once it
781 has some information about cleaning cycles (measured in drive
782 run time, number of tapes used, or calender days, for example)
783 it can automatically execute tape cleaning (with an
784 autochanger, obviously) or ask for operator assistance loading
787 The final step would be to implement TAPEALERT checks not only
788 when changing tapes and only sending the information to the
789 administrator, but rather checking after each tape error,
790 checking on a regular basis (for example after each tape
791 file), and also before unloading and after loading a new tape.
792 Then, depending on the drives TAPEALERT state and the known
793 drive cleaning state Bacula could automatically schedule later
794 cleaning, clean immediately, or inform the operator.
796 Implementing this would perhaps require another catalog change
797 and perhaps major changes in SD code and the DIR-SD protocol,
798 so I'd only consider this worth implementing if it would
799 actually be used or even needed by many people.
801 Implementation of these projects could happen in three distinct
802 sub-projects: Measuring Tape and Drive usage, retiring
803 volumes, and handling drive cleaning and TAPEALERTs.
805 Item 24: Multiple threads in file daemon for the same job
806 Date: 27 November 2005
807 Origin: Ove Risberg (Ove.Risberg at octocode dot com)
810 What: I want the file daemon to start multiple threads for a backup
811 job so the fastest possible backup can be made.
813 The file daemon could parse the FileSet information and start
814 one thread for each File entry located on a separate
817 A confiuration option in the job section should be used to
818 enable or disable this feature. The confgutration option could
819 specify the maximum number of threads in the file daemon.
821 If the theads could spool the data to separate spool files
822 the restore process will not be much slower.
824 Why: Multiple concurrent backups of a large fileserver with many
825 disks and controllers will be much faster.
827 Item 25: Archival (removal) of User Files to Tape
829 Origin: Ray Pengelly [ray at biomed dot queensu dot ca
832 What: The ability to archive data to storage based on certain parameters
833 such as age, size, or location. Once the data has been written to
834 storage and logged it is then pruned from the originating
835 filesystem. Note! We are talking about user's files and not
838 Why: This would allow fully automatic storage management which becomes
839 useful for large datastores. It would also allow for auto-staging
840 from one media type to another.
842 Example 1) Medical imaging needs to store large amounts of data.
843 They decide to keep data on their servers for 6 months and then put
844 it away for long term storage. The server then finds all files
845 older than 6 months writes them to tape. The files are then removed
848 Example 2) All data that hasn't been accessed in 2 months could be
849 moved from high-cost, fibre-channel disk storage to a low-cost
850 large-capacity SATA disk storage pool which doesn't have as quick of
851 access time. Then after another 6 months (or possibly as one
852 storage pool gets full) data is migrated to Tape.
858 ========= Added since the last vote =================
860 Item n: List inChanger flag when doing restore.
861 Origin: Jesper Krogh<jesper@krogh.cc>
865 What: When doing a restore the restore selection dialog ends by telling stuff
867 The job will require the following
868 Volume(s) Storage(s) SD Device(s)
869 ===========================================================================
880 When having an autochanger, it would be really nice with an inChanger
881 column so the operator knew if this restore job would stop waiting for
882 operator intervention. This is done just by selecting the inChanger flag
883 from the catalog and printing it in a seperate column.
886 Why: This would help getting large restores through minimizing the
887 time spent waiting for operator to drop by and change tapes in the library.
889 Notes: [Kern] I think it would also be good to have the Slot as well,
890 or some indication that Bacula thinks the volume is in the autochanger
891 because it depends on both the InChanger flag and the Slot being
895 Item 1: Implement an interface between Bacula and Amazon's S3.
897 Origin: Soren Hansen <soren@ubuntu.com>
899 What: Enable the storage daemon to store backup data on Amazon's
902 Why: Amazon's S3 is a cheap way to store data off-site. Current
903 ways to integrate Bacula and S3 involve storing all the data
904 locally and syncing them to S3, and manually fetching them
905 again when they're needed. This is very cumbersome.
907 Item: Store and restore extended attributes, especially selinux file contexts
908 Date: 28 December 2007
909 Origin: Frank Sweetser <fs@wpi.edu>
910 What: The ability to store and restore extended attributes on
911 filesystems that support them, such as ext3.
913 Why: Security Enhanced Linux (SELinux) enabled systems make extensive
914 use of extended attributes. In addition to the standard user,
915 group, and permission, each file has an associated SELinux context
916 stored as an extended attribute. This context is used to define
917 which operations a given program is permitted to perform on that
918 file. Storing contexts on an SELinux system is as critical as
919 storing ownership and permissions. In the case of a full system
920 restore, the system will not even be able to boot until all
921 critical system files have been properly relabeled.
923 Notes: Fedora ships with a version of tar that has been patched to handle
924 extended attributes. The patch has not been integrated upstream
925 yet, so could serve as a good starting point.
927 http://linux.die.net/man/2/getxattr
928 http://linux.die.net/man/2/setxattr
929 http://linux.die.net/man/2/listxattr
931 http://linux.die.net/man/3/getfilecon
932 http://linux.die.net/man/3/setfilecon
934 Item 1: enable/disable compression depending on storage device (disk/tape)
935 Origin: Ralf Gross ralf-lists@ralfgross.de
937 Status: Initial Request
939 What: Add a new option to the storage resource of the director. Depending
940 on this option, compression will be enabled/disabled for a device.
942 Why: If different devices (disks/tapes) are used for full/diff/incr
943 backups, software compression will be enabled for all backups
944 because of the FileSet compression option. For backup to tapes
945 wich are able to do hardware compression this is not desired.
949 http://news.gmane.org/gmane.comp.sysutils.backup.bacula.devel/cutoff=11124
950 It must be clear to the user, that the FileSet compression option
951 must still be enabled use compression for a backup job at all.
952 Thus a name for the new option in the director must be
955 Notes: KES I think the Storage definition should probably override what
956 is in the Job definition or vice-versa, but in any case, it must
960 Item 1: Backup and Restore of Windows Encrypted Files through raw encryption
963 Origin: Michael Mohr, SAG Mohr.External@infineon.com
965 Date: 22 February 2008
969 What: Make it possible to backup and restore Encypted Files from and to
970 Windows systems without the need to decrypt it by using the raw
971 encryption functions API (see:
972 http://msdn2.microsoft.com/en-us/library/aa363783.aspx)
974 that is provided for that reason by Microsoft.
975 If a file ist encrypted could be examined by evaluating the
976 FILE_ATTRIBUTE_ENCRYTED flag of the GetFileAttributes
979 Why: Without the usage of this interface the fd-daemon running
980 under the system account can't read encypted Files because
981 the key needed for the decrytion is missed by them. As a result
982 actually encrypted files are not backed up
983 by bacula and also no error is shown while missing these files.
987 Item 1: Possibilty to schedule Jobs on last Friday of the month
988 Origin: Carsten Menke <bootsy52 at gmx dot net>
992 What: Currently if you want to run your monthly Backups on the last
993 Friday of each month this is only possible with workarounds (e.g
994 scripting) (As some months got 4 Fridays and some got 5 Fridays)
995 The same is true if you plan to run your yearly Backups on the
996 last Friday of the year. It would be nice to have the ability to
997 use the builtin scheduler for this.
999 Why: In many companies the last working day of the week is Friday (or
1000 Saturday), so to get the most data of the month onto the monthly
1001 tape, the employees are advised to insert the tape for the
1002 monthly backups on the last friday of the month.
1004 Notes: To give this a complete functionality it would be nice if the
1005 "first" and "last" Keywords could be implemented in the
1006 scheduler, so it is also possible to run monthy backups at the
1007 first friday of the month and many things more. So if the syntax
1008 would expand to this {first|last} {Month|Week|Day|Mo-Fri} of the
1009 {Year|Month|Week} you would be able to run really flexible jobs.
1011 To got a certain Job run on the last Friday of the Month for example one could
1014 Run = pool=Monthly last Fri of the Month at 23:50
1018 Run = pool=Yearly last Fri of the Year at 23:50
1020 ## Certain Jobs the last Week of a Month
1022 Run = pool=LastWeek last Week of the Month at 23:50
1024 ## Monthly Backup on the last day of the month
1026 Run = pool=Monthly last Day of the Month at 23:50
1030 Origin: Frank Sweetser <fs@wpi.edu>
1032 What: Add a new SD directive, "minimum spool size" (or similar). This
1033 directive would specify a minimum level of free space available for
1034 spooling. If the unused spool space is less than this level, any
1035 new spooling requests would be blocked as if the "maximum spool
1036 size" threshold had bee reached. Already spooling jobs would be
1037 unaffected by this directive.
1039 Why: I've been bitten by this scenario a couple of times:
1041 Assume a maximum spool size of 100M. Two concurrent jobs, A and B,
1042 are both running. Due to timing quirks and previously running jobs,
1043 job A has used 99.9M of space in the spool directory. While A is
1044 busy despooling to disk, B is happily using the remaining 0.1M of
1045 spool space. This ends up in a spool/despool sequence every 0.1M of
1046 data. In addition to fragmenting the data on the volume far more
1047 than was necessary, in larger data sets (ie, tens or hundreds of
1048 gigabytes) it can easily produce multi-megabyte report emails!
1050 Item n?: Expand the Verify Job capability to verify Jobs older than the
1051 last one. For VolumeToCatalog Jobs
1052 Date: 17 Januar 2008
1053 Origin: portrix.net Hamburg, Germany.
1054 Contact: Christian Sabelmann
1055 Status: 70% of the required Code is part of the Verify function since v. 2.x
1058 The ability to tell Bacula which Job should verify instead of
1059 automatically verify just the last one.
1062 It is sad that such a powerfull feature like Verify Jobs
1063 (VolumeToCatalog) is restricted to be used only with the last backup Job
1064 of a client. Actual users who have to do daily Backups are forced to
1065 also do daily Verify Jobs in order to take advantage of this useful
1066 feature. This Daily Verify after Backup conduct is not always desired
1067 and Verify Jobs have to be sometimes scheduled. (Not necessarily
1068 scheduled in Bacula). With this feature Admins can verify Jobs once a
1069 Week or less per month, selecting the Jobs they want to verify. This
1070 feature is also not to difficult to implement taking in account older bug
1071 reports about this feature and the selection of the Job to be verified.
1073 Notes: For the verify Job, the user could select the Job to be verified
1074 from a List of the latest Jobs of a client. It would also be possible to
1075 verify a certain volume. All of these would naturaly apply only for
1076 Jobs whose file information are still in the catalog.
1078 Item X: Add EFS support on Windows
1079 Origin: Alex Ehrlich (Alex.Ehrlich-at-mail.ee)
1080 Date: 05 August 2008
1083 What: For each file backed up or restored by FD on Windows, check if
1084 the file is encrypted; if so then use OpenEncryptedFileRaw,
1085 ReadEncryptedFileRaw, WriteEncryptedFileRaw,
1086 CloseEncryptedFileRaw instead of BackupRead and BackupWrite
1089 Why: Many laptop users utilize the EFS functionality today; so do.
1090 some non-laptop ones, too.
1091 Currently files encrypted by means of EFS cannot be backed up.
1092 It means a Windows boutique cannot rely on Bacula as its
1093 backup solution, at least when using Windows 2K, XPP,
1094 "better" Vista etc on workstations, unless EFS is
1095 forbidden by policies.
1096 The current situation might result into "false sense of
1097 security" among the end-users.
1099 Notes: Using xxxEncryptedFileRaw API would allow to backup and
1100 restore EFS-encrypted files without decrypting their data.
1101 Note that such files cannot be restored "portably" (at least,
1102 easily) but they would be restoreable to a different (or
1103 reinstalled) Win32 machine; the restore would require setup
1104 of a EFS recovery agent in advance, of course, and this shall
1105 be clearly reflected in the documentation, but this is the
1106 normal Windows SysAdmin's business.
1107 When "portable" backup is requested the EFS-encrypted files
1108 shall be clearly reported as errors.
1109 See MSDN on the "Backup and Restore of Encrypted Files" topic:
1110 http://msdn.microsoft.com/en-us/library/aa363783.aspx
1111 Maybe the EFS support requires a new flag in the database for
1113 Unfortunately, the implementation is not as straightforward as
1114 1-to-1 replacement of BackupRead with ReadEncryptedFileRaw,
1115 requiring some FD code rewrite to work with
1116 encrypted-file-related callback functions.
1118 encrypted-file-related callback functions.
1119 ========== Already implemented ================================
1121 Item n: make changing "spooldata=yes|no" possible for
1122 manual/interactive jobs
1123 Origin: Marc Schiffbauer <marc@schiffbauer.net>
1124 Date: 12 April 2007)
1127 What: Make it possible to modify the spooldata option
1128 for a job when being run from within the console.
1129 Currently it is possible to modify the backup level
1130 and the spooldata setting in a Schedule resource.
1131 It is also possible to modify the backup level when using
1132 the "run" command in the console.
1133 But it is currently not possible to to the same
1134 with "spooldata=yes|no" like:
1136 run job=MyJob level=incremental spooldata=yes
1138 Why: In some situations it would be handy to be able to switch
1139 spooldata on or off for interactive/manual jobs based on
1140 which data the admin expects or how fast the LAN/WAN
1141 connection currently is.
1145 Item 1: Implement an option to modify the last written date for volumes
1146 Date: 16 September 2008
1147 Origin: Franck (xeoslaenor at gmail dot com)
1149 What: The ability to modify the last written date for a volume
1150 Why: It's sometime necessary to jump a volume when you have a pool of volume
1151 which recycles the oldest volume at each backup.
1152 Sometime, it needs to cancel a set of backup (one day
1153 backup, completely) and we want to avoid that bacula
1154 choose the volume (which is not written at all) from
1155 the cancelled backup (It has to jump to next volume).
1156 in this case, we just need to update the written date
1157 manually to avoir the "oldest volume" purge.
1158 Notes: An option can be add to "update volume" command (like 'written date'
1161 ============= Empty Feature Request form ===========
1162 Item n: One line summary ...
1163 Date: Date submitted
1164 Origin: Name and email of originator.
1167 What: More detailed explanation ...
1169 Why: Why it is important ...
1171 Notes: Additional notes or features (omit if not used)
1172 ============== End Feature Request form ==============
1174 ========== Items on put hold by Kern ============================
1176 Item h1: Split documentation
1177 Origin: Maxx <maxxatworkat gmail dot com>
1178 Date: 27th July 2006
1179 Status: Approved, awaiting implementation
1181 What: Split documentation in several books
1183 Why: Bacula manual has now more than 600 pages, and looking for
1184 implementation details is getting complicated. I think
1185 it would be good to split the single volume in two or
1188 1) Introduction, requirements and tutorial, typically
1189 are useful only until first installation time
1191 2) Basic installation and configuration, with all the
1192 gory details about the directives supported 3)
1193 Advanced Bacula: testing, troubleshooting, GUI and
1194 ancillary programs, security managements, scripting,
1197 Notes: This is a project that needs to be done, and will be implemented,
1198 but it is really a developer issue of timing, and does not
1199 needed to be included in the voting.
1202 Item h2: Implement support for stacking arbitrary stream filters, sinks.
1203 Date: 23 November 2006
1204 Origin: Landon Fuller <landonf@threerings.net>
1205 Status: Planning. Assigned to landonf.
1207 What: Implement support for the following:
1208 - Stacking arbitrary stream filters (eg, encryption, compression,
1209 sparse data handling))
1210 - Attaching file sinks to terminate stream filters (ie, write out
1211 the resultant data to a file)
1212 - Refactor the restoration state machine accordingly
1214 Why: The existing stream implementation suffers from the following: - All
1215 state (compression, encryption, stream restoration), is
1216 global across the entire restore process, for all streams. There are
1217 multiple entry and exit points in the restoration state machine, and
1218 thus multiple places where state must be allocated, deallocated,
1219 initialized, or reinitialized. This results in exceptional complexity
1220 for the author of a stream filter.
1221 - The developer must enumerate all possible combinations of filters
1222 and stream types (ie, win32 data with encryption, without encryption,
1223 with encryption AND compression, etc).
1225 Notes: This feature request only covers implementing the stream filters/
1226 sinks, and refactoring the file daemon's restoration
1227 implementation accordingly. If I have extra time, I will also
1228 rewrite the backup implementation. My intent in implementing the
1229 restoration first is to solve pressing bugs in the restoration
1230 handling, and to ensure that the new restore implementation
1231 handles existing backups correctly.
1233 I do not plan on changing the network or tape data structures to
1234 support defining arbitrary stream filters, but supporting that
1235 functionality is the ultimate goal.
1237 Assistance with either code or testing would be fantastic.
1239 Notes: Kern: this project has a lot of merit, and we need to do it, but
1240 it is really an issue for developers rather than a new feature
1241 for users, so I have removed it from the voting list, but kept it
1242 here, but at some point, it will be implemented.
1244 Item h3: Filesystem watch triggered backup.
1245 Date: 31 August 2006
1246 Origin: Jesper Krogh <jesper@krogh.cc>
1249 What: With inotify and similar filesystem triggeret notification
1250 systems is it possible to have the file-daemon to monitor
1251 filesystem changes and initiate backup.
1253 Why: There are 2 situations where this is nice to have.
1254 1) It is possible to get a much finer-grained backup than
1255 the fixed schedules used now.. A file created and deleted
1256 a few hours later, can automatically be caught.
1258 2) The introduced load on the system will probably be
1259 distributed more even on the system.
1261 Notes: This can be combined with configration that specifies
1262 something like: "at most every 15 minutes or when changes
1265 Kern Notes: I would rather see this implemented by an external program
1266 that monitors the Filesystem changes, then uses the console
1269 Item h4: Directive/mode to backup only file changes, not entire file
1270 Date: 11 November 2005
1271 Origin: Joshua Kugler <joshua dot kugler at uaf dot edu>
1272 Marek Bajon <mbajon at bimsplus dot com dot pl>
1275 What: Currently when a file changes, the entire file will be backed up in
1276 the next incremental or full backup. To save space on the tapes
1277 it would be nice to have a mode whereby only the changes to the
1278 file would be backed up when it is changed.
1280 Why: This would save lots of space when backing up large files such as
1281 logs, mbox files, Outlook PST files and the like.
1283 Notes: This would require the usage of disk-based volumes as comparing
1284 files would not be feasible using a tape drive.
1286 Notes: Kern: I don't know how to implement this. Put on hold until someone
1287 provides a detailed implementation plan.
1290 Item h5: Implement multiple numeric backup levels as supported by dump
1292 Origin: Daniel Rich <drich@employees.org>
1294 What: Dump allows specification of backup levels numerically instead of just
1295 "full", "incr", and "diff". In this system, at any given level,
1296 all files are backed up that were were modified since the last
1297 backup of a higher level (with 0 being the highest and 9 being the
1298 lowest). A level 0 is therefore equivalent to a full, level 9 an
1299 incremental, and the levels 1 through 8 are varying levels of
1300 differentials. For bacula's sake, these could be represented as
1301 "full", "incr", and "diff1", "diff2", etc.
1303 Why: Support of multiple backup levels would provide for more advanced
1304 backup rotation schemes such as "Towers of Hanoi". This would
1305 allow better flexibility in performing backups, and can lead to
1306 shorter recover times.
1308 Notes: Legato Networker supports a similar system with full, incr, and 1-9 as
1311 Notes: Kern: I don't see the utility of this, and it would be a *huge*
1312 modification to existing code.
1314 Item h6: Implement NDMP protocol support
1319 What: Network Data Management Protocol is implemented by a number of
1320 NAS filer vendors to enable backups using third-party
1323 Why: This would allow NAS filer backups in Bacula without incurring
1324 the overhead of NFS or SBM/CIFS.
1326 Notes: Further information is available:
1328 http://www.ndmp.org/wp/wp.shtml
1329 http://www.traakan.com/ndmjob/index.html
1331 There are currently no viable open-source NDMP
1332 implementations. There is a reference SDK and example
1333 app available from ndmp.org but it has problems
1334 compiling on recent Linux and Solaris OS'. The ndmjob
1335 reference implementation from Traakan is known to
1336 compile on Solaris 10.
1338 Notes: Kern: I am not at all in favor of this until NDMP becomes
1339 an Open Standard or until there are Open Source libraries
1340 that interface to it.
1342 Item h7: Commercial database support
1343 Origin: Russell Howe <russell_howe dot wreckage dot org>
1347 What: It would be nice for the database backend to support more databases.
1348 I'm thinking of SQL Server at the moment, but I guess Oracle, DB2,
1349 MaxDB, etc are all candidates. SQL Server would presumably be
1350 implemented using FreeTDS or maybe an ODBC library?
1352 Why: We only really have one database server, which is MS SQL Server 2000.
1353 Maintaining a second one for the backup software (we grew out of
1354 SQLite, which I liked, but which didn't work so well with our
1355 database size). We don't really have a machine with the resources
1356 to run postgres, and would rather only maintain a single DBMS.
1357 We're stuck with SQL Server because pretty much all the company's
1358 custom applications (written by consultants) are locked into SQL
1359 Server 2000. I can imagine this scenario is fairly common, and it
1360 would be nice to use the existing properly specced database server
1361 for storing Bacula's catalog, rather than having to run a second
1364 Notes: This might be nice, but someone other than me will probably need to
1365 implement it, and at the moment, proprietary code cannot legally
1366 be mixed with Bacula GPLed code. This would be possible only
1367 providing the vendors provide GPLed (or OpenSource) interface
1370 Item h8: Incorporation of XACML2/SAML2 parsing
1371 Date: 19 January 2006
1372 Origin: Adam Thornton <athornton@sinenomine.net>
1375 What: XACML is "eXtensible Access Control Markup Language" and "SAML is
1376 the "Security Assertion Markup Language"--an XML standard for
1377 making statements about identity and authorization. Having these
1378 would give us a framework to approach ACLs in a generic manner,
1379 and in a way flexible enough to support the four major sorts of
1380 ACLs I see as a concern to Bacula at this point, as well as
1381 (probably) to deal with new sorts of ACLs that may appear in the
1384 Why: Bacula is beginning to need to back up systems with ACLs that do not
1385 map cleanly onto traditional Unix permissions. I see four sets of
1386 ACLs--in general, mutually incompatible with one another--that
1387 we're going to need to deal with. These are: NTFS ACLs, POSIX
1388 ACLs, NFSv4 ACLS, and AFS ACLS. (Some may question the relevance
1389 of AFS; AFS is one of Sine Nomine's core consulting businesses,
1390 and having a reputable file-level backup and restore technology
1391 for it (as Tivoli is probably going to drop AFS support soon since
1392 IBM no longer supports AFS) would be of huge benefit to our
1393 customers; we'd most likely create the AFS support at Sine Nomine
1394 for inclusion into the Bacula (and perhaps some changes to the
1395 OpenAFS volserver) core code.)
1397 Now, obviously, Bacula already handles NTFS just fine. However, I
1398 think there's a lot of value in implementing a generic ACL model,
1399 so that it's easy to support whatever particular instances of ACLs
1400 come down the pike: POSIX ACLS (think SELinux) and NFSv4 are the
1401 obvious things arriving in the Linux world in a big way in the
1402 near future. XACML, although overcomplicated for our needs,
1403 provides this framework, and we should be able to leverage other
1404 people's implementations to minimize the amount of work *we* have
1405 to do to get a generic ACL framework. Basically, the costs of
1406 implementation are high, but they're largely both external to
1407 Bacula and already sunk.
1409 Notes: As you indicate this is a bit of "blue sky" or in other words,
1410 at the moment, it is a bit esoteric to consider for Bacula.
1412 Item h9: Archive data
1414 Origin: calvin streeting calvin at absentdream dot com
1417 What: The abilty to archive to media (dvd/cd) in a uncompressed format
1418 for dead filing (archiving not backing up)
1420 Why: At work when jobs are finished and moved off of the main
1421 file servers (raid based systems) onto a simple Linux
1422 file server (ide based system) so users can find old
1423 information without contacting the IT dept.
1425 So this data dosn't realy change it only gets added to,
1426 But it also needs backing up. At the moment it takes
1427 about 8 hours to back up our servers (working data) so
1428 rather than add more time to existing backups i am trying
1429 to implement a system where we backup the acrhive data to
1430 cd/dvd these disks would only need to be appended to
1431 (burn only new/changed files to new disks for off site
1432 storage). basialy understand the differnce between
1433 achive data and live data.
1435 Notes: Scan the data and email me when it needs burning divide
1436 into predefined chunks keep a recored of what is on what
1437 disk make me a label (simple php->mysql=>pdf stuff) i
1438 could do this bit ability to save data uncompresed so
1439 it can be read in any other system (future proof data)
1440 save the catalog with the disk as some kind of menu
1443 Notes: Kern: I don't understand this item, and in any case, if it
1444 is specific to DVD/CDs, which we do not recommend using,
1445 it is unlikely to be implemented except as a user
1449 Item h10: Clustered file-daemons
1450 Origin: Alan Brown ajb2 at mssl dot ucl dot ac dot uk
1453 What: A "virtual" filedaemon, which is actually a cluster of real ones.
1455 Why: In the case of clustered filesystems (SAN setups, GFS, or OCFS2, etc)
1456 multiple machines may have access to the same set of filesystems
1458 For performance reasons, one may wish to initate backups from
1459 several of these machines simultaneously, instead of just using
1460 one backup source for the common clustered filesystem.
1462 For obvious reasons, normally backups of $A-FD/$PATH and
1463 B-FD/$PATH are treated as different backup sets. In this case
1464 they are the same communal set.
1466 Likewise when restoring, it would be easier to just specify
1467 one of the cluster machines and let bacula decide which to use.
1469 This can be faked to some extent using DNS round robin entries
1470 and a virtual IP address, however it means "status client" will
1471 always give bogus answers. Additionally there is no way of
1472 spreading the load evenly among the servers.
1474 What is required is something similar to the storage daemon
1475 autochanger directives, so that Bacula can keep track of
1476 operating backups/restores and direct new jobs to a "free"
1479 Notes: Kern: I don't understand the request enough to be able to
1480 implement it. A lot more design detail should be presented
1481 before voting on this project.