Kern's ToDo List
- 11 December 2002
+ 25 January 2003
Documentation to do: (a little bit at a time)
- Document running a test version.
-- Make sure restore options are documented
- Document query file format.
+- Document static linking
+- Document how to automatically backup all local partitions
+- Document problems with Verify and pruning.
+- Document how to use multiple databases.
+
Testing to do: (painful)
-- that restore options work in FD (mostly done).
- that console command line options work
- blocksize recognition code.
-- Test new BSR code (mostly done).
-- Test watchdog child timer code.
-
-For 1.28 release:
+For 1.30 release:
+- Add Signature type to File DB record.
+- CD into subdirectory when open()ing files for backup to
+ speed up things. Test with testfind().
+- Add prefixlinks to where or not where absolute links to FD.
+- Look at handling <> in smtp doesn't work with exim.
+- Priority job to go to top of list.
+- Implement Bar code handling
+- Why is catreq.c:111 Find vol called twice for a job?
+- Find out why Full saves run slower and slower (hashing?)
+- Figure out how to allow multiple simultaneous file Volumes on a single device.
+- Why are save/restore of device different sizes (sparse?) Yup! Fix it.
+- Implement some way for the Console to dynamically create a job.
+- Restore to a particular time -- e.g. before date, after date.
+- Implement disk spooling
+- Implement finer multiprocessing options.
+- Solaris -I on tar for include list
+- Enable avoid backing up archive device (findlib/find_one.c:128)
+- Implement FileOptions (see end of this document)
+- Implement Bacula plugins -- design API
+- Make bcopy read through bad tape records.
- Need a verbose mode in restore, perhaps to bsr.
-- Should we dump a SOS when starting a new tape?
- bscan without -v is too quiet -- perhaps show jobs.
-- Get rid of bscan.c:534 error message (one time only).
-- Print some statistics when get EOF on device in bscan -- feedback
- to let user know it is working.
- Add code to reject whole blocks if not wanted on restore.
-
-- Figure out how to allow multiple simultaneous file Volumes on
- a single device.
+- Implement multiple simultaneous file Volumes on a single device.
- Start working on Base jobs.
-- Implement FileOptions (see end of this document)
-- Ensure that restore of differential jobs works (check SQL).
- Make sure the MaxVolFiles is fully implemented in SD
- Flush all the daemon messages at the end of every job.
- Check if both CatalogFiles and UseCatalog are set to SD.
- Check if we can increase Bacula FD priorty in Win2000
-- Make bcopy read through bad tape records.
- Need return status on read_cb() from read_records(). Need multiple
records -- one per Job, maybe a JCR or some other structure with
a block and a record.
-
-- Look at hierarchial storage for Bacula.
-- Implement Bacula plugins -- design API
-
-- Work more on how to to a Bacula restore beginning with
- just a Bacula tape and a boot floppy (bare metal recovery).
-- Try bare metal Windows restore
+- Figure out how to do a bare metal Windows restore
- Fix read_record to handle multiple sessions.
- Program files (i.e. execute a program to read/write files).
Pass read date of last backup, size of file last time.
- Use read_record.c in SD code.
- Why don't we get an error message from Win32 FD when bootstrap
file cannot be created for restore command?
+- Need to specify MaximumConcurrentJobs in the Job resource.
- When Marking a file in Restore that is a hard link, also
mark the link so that the data will be reloaded.
- Restore program that errors in SD due to no tape reports
OK incorrectly in output.
- After unmount, if restore job started, ask to mount.
-- Fix db_get_fileset in cats/sql_get.c for multiple records.
-- Fix catalog filename truncation in sql_get and sql_create. Use
- only a single filename split routine.
- Make Restore report an error if FD or SD term codes are not OK.
- Convert all %x substitution variables, which are hard to remember
and read to %(variable-name). Idea from TMDA.
- Add JobLevel in FD status (but make sure it is defined).
- Make Pool resource handle Counter resources.
- Remove NextId for SQLite. Optimize.
-- Fix gethostbyname() to use gethostbyname_r()
-- Implement ./configure --with-client-only
- Strip trailing / from Include
- Move all SQL statements into a single location.
- Cleanup db_update_media and db_update_pool
allow -with-termcap-dir.
- Enhance time and size scanning routines.
- Fix Autoprune for Volumes to respect need for full save.
-- DateWritten field on tape may be wrong.
- Fix Win32 config file definition name on /install
- No READLINE_SRC if found in alternate directory.
- Add Client FS/OS id (Linux, Win95/98, ...).
- Test a second language e.g. french.
- Compare tape to Client files (attributes, or attributes and data)
-- Restore options (overwrite, overwrite if older,
- overwrite if newer, never overwrite, ...)
-- Restore to a particular time -- e.g. before date, after date.
- Make all database Ids 64 bit.
- Write an applet for Linux.
- Add estimate to Console commands
- Fix Win2000 error with no messages during startup.
- Events : tape has more than xxx bytes.
- Restrict characters permitted in a Resource name.
-- Complete code in Bacula Resources -- this will permit
+- Complete code in Bacula Resources -- this will permit
reading a new config file at any time.
- Handle ctl-c in Console
- Implement LabelTemplate (at least first cut).
- Implement script driven addition of File daemon to config files.
-- Think about how to make Bacula work better with File archives.
+- Think about how to make Bacula work better with File (non-tape) archives.
+- Write Unix emulator for Windows.
-- see setgroup and user for Bacula p4-5 of stunnel.c
- Implement new serialize subroutines
send(socket, "string", &Vol, "uint32", &i, NULL)
- Audit all UA commands to ensure that we always prompt where possible.
- Make database type selectable by .conf files i.e. at runtime
- gethostbyname failure in bnet_connect() continues
generating errors -- should stop.
-- Add HOST to Volume label.
- Set flag for uname -a. Add to Volume label.
- Implement throttled work queue.
- Check for EOT at ENOSPC or EIO or ENXIO (unix Pc)
a single Storage specification) in the Job record. Thus a job
can be backed up to a number of storage devices.
- Implement dump label to UA
-- Copy volume using single drive.
- Concept of VolumeSet during restore which is a list
of Volume names needed.
- Restore files modified after date
- If SD cannot open a drive, make it periodically retry.
- Remove duplicate fields from jcr (e.g. jcr.level and jcr.jr.Level, ...).
- Timout a job or terminate if link goes down, or reopen link and query.
-- Fill all fields in Vol/Job Header -- ensure that everything
- needed is written to tape. Think about restore to Catalog
- from tape. Client record needs improving.
- Find general solution for sscanf size problems (as well
as sprintf. Do at run time?
- Concept of precious tapes (cannot be reused).
- Make bcopy copy with a single tape drive.
- Permit changing ownership during restore.
-- Restore should get Device and Pool information from
- job record rather than from config.
-- Autolabel should be specified by DR instead of SD.
+- Autolabel should be specified by DIR instead of SD.
- Find out how to get the system tape block limits, e.g.:
Apr 22 21:22:10 polymatou kernel: st1: Block limits 1 - 245760 bytes.
Apr 22 21:22:10 polymatou kernel: st0: Block limits 2 - 16777214 bytes.
- MaxWarnings
- MaxErrors (job?)
=====
-- FD sends unsaved file list to Director at end of job.
+- FD sends unsaved file list to Director at end of job (see
+ RFC below).
+- File daemon should build list of files skipped, and then
+ at end of save retry and report any errors.
- Write a Storage daemon that uses pipes and
standard Unix programs to write to the tape.
See afbackup.
- Need something that monitors the JCR queue and
times out jobs by asking the deamons where they are.
-
- Enhance Jmsg code to permit buffering and saving to disk.
- device driver = "xxxx" for drives.
- restart: paranoid: read label fsf to
if tape is not valid.
- Verify from Volume
- Ensure that /dev/null works
-- File daemon should build list of files skipped, and then
- at end of save retry and report any errors.
- Need report class for messages. Perhaps
report resource where report=group of messages
- enhance scan_attrib and rename scan_jobtype, and
fill in code for "since" option
-- Need to save contents of FileSet to tape?
- Director needs a time after which the report status is sent
anyway -- or better yet, a retry time for the job.
Don't reschedule a job if previous incarnation is still running.
-- Figure out how to save the catalog (possibly a special FileSet).
-- Figure out how to restore the catalog.
- Some way to automatically backup everything is needed????
- Need a structure for pending actions:
- buffered messages
This could be the output of df; or perhaps some sort of /etc/mtab record.
Longer term to do:
+- Design at hierarchial storage for Bacula.
- Implement FSM (File System Modules).
- Identify unchanged or "system" files and save them to a
special tape thus removing them from the standard
is NOT currently the case). Must detect socket error,
buffer messages for later.
- Enhance time/duration input to allow multiple qualifiers e.g. 3d2h
+- Add ability to backup to two Storage devices (two SD sessions) at
+ the same time -- e.g. onsite, offsite.
+- Add the ability to consolidate old backup sets (basically do a restore
+ to tape and appropriately update the catalog). Compress Volume sets.
+ Might need to spool via file is only one drive is available.
+- Compress or consolidate Volumes of old possibly deleted files. Perhaps
+ someway to do so with every volume that has less than x% valid
+ files.
Projects:
Bacula Projects Roadmap
17 August 2002
- last update 27 November 2002
+ last update 5 January 2003
Item 1: Multiple simultaneous Jobs. (done)
-Done
+Done -- Restore part needs better implementation to work correctly
What: Permit multiple simultaneous jobs in Bacula.
-====================================
+======================================================
+ Base Jobs design
+It is somewhat like a Full save becomes an incremental since
+the Base job (or jobs) plus other non-base files.
+Need:
+- New BaseFile table that contains:
+ JobId, BaseJobId, FileId (from Base).
+ i.e. for each base file that exists but is not saved because
+ it has not changed, the File daemon sends the JobId, BaseId,
+ and FileId back to the Director who creates the DB entry.
+- To initiate a Base save, the Director sends the FD
+ the FileId, and full filename for each file in the Base.
+- When the FD finds a Base file, he requests the Director to
+ send him the full File entry (stat packet plus MD5), or
+ conversely, the FD sends it to the Director and the Director
+ says yes or no. This can be quite rapid if the FileId is kept
+ by the FD for each Base Filename.
+- It is probably better to have the comparison done by the FD
+ despite the fact that the File entry must be sent across the
+ network.
+- An alternative would be to send the FD the whole File entry
+ from the start. The disadvantage is that it requires a lot of
+ space. The advantage is that it requires less communications
+ during the save.
+- The Job record must be updated to indicate that one or more
+ Bases were used.
+- At end of Job, FD returns:
+ 1. Count of base files/bytes not written to tape (i.e. matches)
+ 2. Count of base file that were saved i.e. had changed.
+- No tape record would be written for a Base file that matches, in the
+ same way that no tape record is written for Incremental jobs where
+ the file is not saved because it is unchanged.
+- On a restore, all the Base file records must explicitly be
+ found from the BaseFile tape. I.e. for each Full save that is marked
+ to have one or more Base Jobs, search the BaseFile for all occurrences
+ of JobId.
+- An optimization might be to make the BaseFile have:
+ JobId
+ BaseId
+ FileId
+ plus
+ FileIndex
+ This would avoid the need to explicitly fetch each File record for
+ the Base job. The Base Job record will be fetched to get the
+ VolSessionId and VolSessionTime.
+=========================================================
+
+==========================================================
+ Unsaved File design
+For each Incremental job that is run, there may be files that
+were found but not saved because they were locked (this applies
+only to Windows). Such a system could send back to the Director
+a list of Unsaved files.
+Need:
+- New UnSavedFiles table that contains:
+ JobId
+ PathId
+ FilenameId
+- Then in the next Incremental job, the list of Unsaved Files will be
+ feed to the FD, who will ensure that they are explicitly chosen even
+ if standard date/time check would not have selected them.
+=============================================================
+
+
- Request For Comments
+=============================================================
+
+ Request For Comments For File Backup Options
10 November 2002
Subject: File Backup Options
- Sparse= (yes/no) - do sparse file backup
- *Exclude= (yes/no) - exclude file from being saved
- *Reader= (filename) - external read (backup) program
+ - *Plugin= (filename) - read/write plugin module
For Verify Jobs:
- verify= (ipnougsamc5) - verify options
applied for the backup.
====================================
+=========================================
+Proposal by Bill Sellers
+
+Return-Path: <w.a.sellers@larc.nasa.gov>
+Received: from post.larc.nasa.gov (post.larc.nasa.gov [128.155.4.45]) by matou.sibbald.com (8.11.6/8.11.6) with ESMTP id h0ELUIm07622 for <kern@sibbald.com>; Tue, 14 Jan 2003 22:30:18 +0100
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+Message-Id: <5.1.0.14.2.20030114153452.028dbae8@pop.larc.nasa.gov>
+X-Sender: w.a.sellers@pop.larc.nasa.gov
+X-Mailer: QUALCOMM Windows Eudora Version 5.1
+Date: Tue, 14 Jan 2003 16:30:18 -0500
+To: Kern Sibbald <kern@sibbald.com>
+From: Bill Sellers <w.a.sellers@larc.nasa.gov>
+Subject: Re: [Bacula-users] Bacula remote storage?
+In-Reply-To: <1042565382.1845.177.camel@rufus>
+References: <5.1.0.14.2.20030114113004.0293a210@pop.larc.nasa.gov> <5.1.0.14.2.20030113170650.028dad88@pop.larc.nasa.gov> <5.1.0.14.2.20030113170650.028dad88@pop.larc.nasa.gov> <5.1.0.14.2.20030114113004.0293a210@pop.larc.nasa.gov>
+Mime-Version: 1.0
+Content-Type: text/plain; charset="us-ascii"; format=flowed
+X-Annoyance-Filter-Junk-Probability: 0
+X-Annoyance-Filter-Classification: Mail
+At 06:29 PM 1/14/2003 +0100, you wrote:
+>Hello Bill,
+>
+>Well, if you cannot put a Bacula client on the machine,
+>then it is a big problem. If you know of some software
+>that can do what you want, let me know, because I
+>really just don't know how to do it -- at least not
+>directly.
+
+
+Hi Kern,
+
+We have been able to get Amanda to use the HSM as a storage
+device. Someone here wrote a driver for Amanda. BUT, Amanda doesn't
+handle Windows systems very well (or at all without Samba). So I am
+looking for a backup system that has a Windows client. I really like the
+Windows integration of Bacula.
+
+From the command line, its rather trivial to move the data around. We use
+something like-
+
+tar cf - ./files | gzip -c | rsh hsm dd of=path/file.tgz
+
+or if you use GNU tar:
+
+tar czf hsm:path/file.tgz ./files
+
+One idea for you to consider; Sendmail offers pipes in the aliases file;
+(mailpipe: "|/usr/bin/vacation root") and Perl supports pipes in the
+"open" statement (open FILE, "|/bin/nroff -man";) Could you could make a
+pipe available, as a storage device? Then we could use any command that
+handles stdin as a storage destination.
+
+Something like-
+
+Storage {
+ Name = HSM-RSH
+ Address = hsm
+ #Password is not used in rsh, but might be used in ftp.
+ Device = "| gzip -c | rsh hsm dd of=path/file.tgz"
+ MediaType = Pipe
+}
+
+Storage {
+ Name = HSM-FTP
+ Address = hsm
+ Password = "foobar&-"
+ Device = "| ncftpput -c hsm /path/file.bacula"
+ MediaType = Pipe
+}
+
+>If you have some local storage available, you could
+>use Bacula to backup to disk volumes, then use some
+>other software (ftp, scp) to move them to the HSM
+>machine. However, this is a bit kludgy.
+
+
+It is, but maybe worth a try. Is there some function in Bacula to put
+variables in filenames? i.e. backup.2003-01-15.root
+
+Thanks!
+Bill
+
+---
+Bill Sellers
+w.a.sellers@larc.nasa.gov
+
+==============================================
+ The Project for the above
+
+I finally realized that this is not at all
+the same as reader/writer programs or plugins,
+which are alternate ways of accessing the
+files to be backed up. Rather, it is an alternate
+form of storage device, and I have always planned
+that Bacula should be able to handle all sorts
+of storage devices.
+
+So, I propose the following phases:
+
+1. OK from you to invest some time in testing
+ this as I implement it (requires that you
+ know how to download from the SourceForge
+ cvs -- which I imagine is a piece of cake
+ for you).
+
+2. Dumb implementation by allowing a device to
+ be a fifo for write only.
+ Reason: easy to implement, proof of concept.
+
+3. Try reading from fifo but with fixed block
+ sizes.
+ Reason: proof of concept, easy to implement.
+
+4. Extend reading from fifo (restores) to handle
+ variable blocks.
+ Reason: requires some delicate low level coding
+ which could destabilize all of Bacula.
+
+5. Implementation of above but to a program. E.g.
+ Device = "|program" (not full pipeline).
+ Reason: routines already exist, and program can
+ be a shell script which contains anything.
+
+6. Add full pipeline as a possibility. E.g.
+ Device = "| gzip -c | rsh hsm dd of=path/file.tgz"
+ Reason: needs additional coding to implement full
+ pipeline (must fire off either a shell or all
+ programs and connect their pipes).
+
+There are a good number of details in each step
+that I have left out, but I will specify them at
+every stage, and there may be a few changes as things
+evolve. I expect that to get to stage 5 will take a
+few weeks, and at that point, you will have
+everything you need (just inside a script).
+Stage 6 will probably take longer, but if this
+project pleases you, what we do for 5 should
+be adequate for some time.
+
+
+
+=============================================
+
Done: (see kernsdone for more)
-- Add EOM records? No, not at this time. The current system works and
- above all is simple.
-- Add VolumeUseDuration and MaximumVolumeJobs to Pool db record and
- to Media db record.
-- Add VOLUME_CAT_INFO to the EOS tape record (as
- well as to the EOD record). -- No, not at this time.
-- Put MaximumVolumeSize in Director (MaximumVolumeJobs, MaximumVolumeFiles,
- MaximumFileSize).
-- Enhance schedule to have 1stSat, ...
-- Make sure catalog doesn't keep growing.
-- On I/O error, write EOF, then try to write again ? No, keep it simple.
-- Figure out how compress everything except .gz,... files.
- Implement FileOptions.
-- Put Bacula version somewhere in Job stream, probably Start Session Labels.
-- Fix start/end blocks for File devices
-- Make Job err if WriteBootstrap fails.
-- Test that mod of restore options works.
-- Test that week position schedule code works.
-- Make BSR accept count (total files to be restored).
-- Add code to fast seek to proper place on tape/file when doing Restore.
-- Replace popen() and pclose() -- fail safe and timeout, no SIG dep.
-- Add code to put VolFile in bsr for restore command.
-- Volumes can be listed multiple times in Restore volume list.
-- Add watchdog timeout for child processes start_child_timer()
- end_child_timer();
+- Look into Pruning/purging problems or why there seem to
+ be so many files listed each night.
+- Fix cancel in find_one -- need jcr.
+- Cancel does not work for restore in FD.
+- Write SetJobStatus() function so cancel status not lost.
+- Add include list to end of chain in findlib
+- Zap sd_auth_key after use
+- Add Bar code reading capabilities (new mtx-changer)
+- Figure out some way to automatically backup all local partitions
+- Make hash table for linked files in findlib/find_one.c:161
+ (not necessary)
+- Rewrite find_one.c to use only pool_memory instead of
+ alloca and malloc (probably not necessary).
+- Make sure btraceback goes into /sbin not sysconf directory.
+- InitVerify is getting pruned and it shouldn't (document it)
+- Make 1.28c release ??? NO do 1.29 directly
+- Set timeout on opening fifo for save or restore (findlib)
+- Document FIFO storage device.
+- Document fifo and | and <
+====== 1.30 =======
+- Implement SHA1
+- Get correct error status from run_program or open_bpipe().
projects / bacula / bacula / blobdiff