1 #========================================================================
3 # ChangeLog - change log for BackupPC.
6 # Revision history for BackupPC, detailing significant changes between
7 # versions, most recent first.
10 # Craig Barratt <cbarratt@users.sourceforge.net>
12 #========================================================================
14 # Version __VERSION__, released __RELEASEDATE__.
16 # See http://backuppc.sourceforge.net.
18 #========================================================================
20 #------------------------------------------------------------------------
21 # Version __VERSION__, __RELEASEDATE__
22 #------------------------------------------------------------------------
24 * Major changes from Ryan Kucera to add style sheets to the CGI
25 interface, allowing easy customization. Added new icons and
26 BackupPC logo. Numerous navigation improvements.
28 * Major addition of Archive feature from Josh Marshall. Special
29 clients can be configured to be archive targets (eg: tape drives,
30 CD-R). Any subset of the backup clients can be selected and tar
31 archives are created, optionally compressed and split and written
32 to the output device. Logs are maintained and are browsable.
34 * Addition of administration options from Paul Lukins. Initial
35 page allows server to be started/stopped/reloaded.
37 * Split BackupPC_Admin into a set of modules, one for each major action.
38 Each action is now a seperate module in lib/BackupPC/CGI.
40 * Added directory history display to BackupPC_Admin, allowing the
41 user to quickly see which files changed between backups.
43 * A failed full dump is now saved as a partial (incomplete) dump,
44 provided it includes some files. This can be used for browsing,
45 restoring etc, and will also form the basis of resuming full
46 dumps. Only one partial is kept, and it is removed as soon
47 as a success full (or a new partial) is done.
49 * Browsing and directory history now sort the files in a
50 case-insensitive manner.
52 * Swapped the Server and Hosts sections on the Nav bar. Moved the
53 host search text box to the top of the hosts section. This was
54 done to move the variable-length part of the Nav bar (when all
55 hosts are displayed) to the bottom.
57 * In BackupPC_Admin, default REMOTE_USER to $Conf{BackupPCUser}
58 if it is not defined. This allows the CGI interface to work
59 when AdminUsers = '*'. Reported by Quentin Arce.
61 * For SMB, code that detected files with a read-locked region (eg:
62 outlook .pst files), removed them and then tried to link with an
63 earlier version was broken. This code missed a step of mangling
64 the file names. This is now fixed. Reported by Pierre Bourgin.
66 * A backup of a share that has zero files is now considered
67 fatal. This is used to catch miscellaneous Xfer errors that
68 result in no files being backed up. A new config parameter
69 $Conf{BackupZeroFilesIsFatal} (defaults to 1) and can be set to
70 zero to turn off this check. Suggested by Guillaume Filion.
72 * SMB: now detect NT_STATUS_ACCESS_DENIED on entire share or BackupFilesOnly
73 (also ERRDOS - ERRnoaccess (Access denied.) for older versions of
74 smbclient.) Suggested by Guillaume Filion.
76 * SMB: now detects "tree connect failed: NT_STATUS_BAD_NETWORK_NAME" and
77 the dump is considered failed.
79 * Rsync: Previously BackupFilesOnly = '/' did --include '/' --exclude '/*',
80 which just included the '/' directory and nothing below. Now it
81 does just --include '/', which should include everything.
84 * Add hostError to DumpPostUserCmd variable substitutions for both dump
87 * Verbose output in Lib.pm goes to STDERR, not STDOUT. This now
88 makes BackupPC_dump -v work better.
90 * Don't allow browsing with ".." in directory in case a user tries
91 to trick BackupPC_Admin into displaying directories outside where
94 * Required File::RsyncP version is now 0.44, since File::RsyncP 0.44
95 fixes large file (>2GB) bugs. Large file bugs reported by Steve
99 #------------------------------------------------------------------------
100 # Version 2.0.0, 14 Jun 2003
101 #------------------------------------------------------------------------
103 * Minor tweaks to disable utf8 on utf8-capable machines (eg: RH8+).
104 Added "no utf8" to all programs, and added binmode() to relevant
107 #------------------------------------------------------------------------
108 # Version 2.0.0beta3, 1 Jun 2003
109 #------------------------------------------------------------------------
111 * Several improvements to restore: cancel now reports the correct
112 message and cleans up correctly.
114 * Rsync with whitespace and wildcard excludes fixed by replacing
115 argList with argList+ in config.pl plus a fix to Lib.pm for
116 shell escaping array arguments.
118 * Fixed rsync restore for character and block special devices
119 (major and minor device numbers weren't correctly restored).
121 * Fixed typo in bin/BackupPC_restore (XferLOG -> RestoreLOG).
123 * (Re)-fixed "Bad command" in log file when restore via tar or zip
124 file download is done.
126 * Added untaint to exec in Lib.pm to avoid tainted errors.
128 * Applied additional tweak to hilight patch from Tim Demarest.
130 * $Conf{CgiAdminUsers} = '*' now allows privileged even with REMOTE_USER
133 * Don't display RsyncdPasswd when displaying config.pl files.
135 * Replace pipe with socketpair in bin/BackupPC_dump and bin/BackupPC_restore,
136 which increases typical buffering from 4K to 16K-64K. This improves the
139 * Add check on $ENV{LANG} setting do configure.pl: if LANG includes utf
140 then a warning is printed.
142 #------------------------------------------------------------------------
143 # Version 2.0.0beta2, 11 May 2003
144 #------------------------------------------------------------------------
146 * Added German translation, provided by Manfred Herrmann.
148 * Fixed large-file problem with rsync, reported by Manfred Herrmann.
150 * Fixed zip and tar file download from CGI under mod_perl. Reported
151 by Pierre Bourgin and Paul Lukins.
153 * Fixed directory browsing and top-level directory browsing in 2.0.0beta0.
154 Reported by several users.
156 * Added -v option to BackupPC_dump for verbose output (useful when
157 you run the command manually). Added messages for all exits.
159 * If nmblookup returns multiple IP addresses, NetBiosHostIPFind()
160 now returns the first IP address that matches the subnet mask.
161 Suggested by Tim Demarest.
163 * Fixed BackupPC::View so the top-level directory is handled correctly.
164 This allows the top-level share/directory to be restored via the
165 CGI interface. Reported by several users.
167 * Fixed RsyncFileIO failures on certain large files by replacing seek()
168 with sysseek(). Reported by Manfred Herrmann.
170 * Added configurable highlighting of PC status in the CGI summary
171 screen; submitted by Tim Demarest.
173 * Fixed command queue CGI display; submitted by Tim Demarest.
175 * BackupPC_trashClean now logs an error if it can't remove all the
176 trash and then goes back to sleep, rather than continually trying.
178 * Moved correct user (uid) check into BackupPC::Lib so that all
179 applications do a user check if $Cong{BackupPCUserVerify} is
180 set. The avoids the risk of manually running BackupPC_dump as
183 * Loss of blackout now applies to "host not found" as well as no ping.
184 Reported by Dale Renton.
186 * "Host not found" is now treated in a similar manner to "no ping".
188 * Added suse-linux init.d script from Leon Letto.
190 * Added Gentoo linux init.d script from Tim Demarest.
192 * Applied additional i18n strings from GFK and the translation team.
194 * Fixed option parsing so that getopts errors are reported and we exit.
196 * Changed reporting of Xfer PIDs so that rsync cancel works correctly.
198 #------------------------------------------------------------------------
199 # Version 2.0.0beta1, 30 Mar 2003
200 #------------------------------------------------------------------------
202 * Added Spanish translation es.pm from Javier Gonzalez.
204 * Fixed CGI browse navigation bug that causes BackupPC_Admin to wedge
205 when directories were selected in a certain order.
207 * Fixed BackupPC::PoolWrite so that it can recover when the initial
208 file size is wrong. This is needed since rsync could write a file
209 whose size is different from the initial size returned in the
210 file list when that file is updated while rsync is running.
212 * Added binmode(STDIN) to BackupPC_tarExtract, suggested by Pat LoPresti
213 to fix a problem a RedHat8 with perl 5.8.0. It's unclear why this
214 helps, but it should be benign. See:
215 http://sourceforge.net/mailarchive/forum.php?thread_id=1853018&forum_id=503
217 #------------------------------------------------------------------------
218 # Version 2.0.0beta0, 23 Feb 2003
219 #------------------------------------------------------------------------
221 * Support for rsync and rsyncd backup and restore. Changes to
222 BackupPC_dump, BackupPC_restore, and new modules BackupPC::Xfer::Rsync
223 and BackupPC::Xfer::RsyncFileIO.
225 * Added internationalization (i18n) code from Xavier Nicollet,
226 with additions from Guillaume Filion. Voila! BackupPC_Admin
227 now supports English and French, and adding more languages is
228 now easy. New config paramater $Conf{Language} sets the language.
230 * Added optional user-defined pre/post dump/restore commands, allowing
231 things like database shutdown/startup for dumps.
233 * Changed the way hosts are found.
235 * Added $Conf{ClientNameAlias}, which allows the name of the physical
236 client machine to be set. This allows several different backup
237 "hosts" to all refer to the same physical machine, which is
238 convenient if several different types of data need to be backed
239 up, or if different parameters are needed for different parts of
242 * Replaced $Conf{PingArgs} with $Conf{PingCmd}, added $Conf{DfCmd},
243 $Conf{NmbLookupCmd} allowing all these commands to be fully
244 configured. Also, all commands can also now be fragments of
247 * Moved all smbclient commands into the config.pl file so the specific
248 arguments can be customized. New config parameters are
249 $Conf{SmbClientFullCmd}, $Conf{SmbClientIncrCmd} and
250 $Conf{SmbClientRestoreCmd}.
252 * Added new BackupPC::View module that creates views of backups
253 (handling merging etc). Updated BackupPC_Admin, BackupPC_zipCreate
254 and BackupPC_tarCreate to use BackupPC::View. This removes lots
255 of merging and mangling code from the higher-level code.
257 * Added code from Toby Johnson that allows additional users to be
258 specified in the hosts file; these users can also view/start/stop
259 and restore backups for that host. Also added a new config
260 setting $Conf{CgiNavBarAdminAllHosts} that allows all hosts to
261 be listed in the left nav bar for admins.
263 * Added $Conf{HardLinkMax} (default 31999) which sets the limit on
264 the maximum number of hardlinks per file in the pool. If a file
265 ever gets to this number of links a new pool file is created to
266 handle additional links.
268 * Added $Conf{PerlModuleLoad}, which allows optional additional perl
269 modules to be loaded.
271 * Added $Conf{EMailUserDestDomain} and other EMail config settings to
272 allow language-specific default messages to be overridden.
274 * Added BPC_FTYPE_DELETED to lib/BackupPC/Attrib.pm, allowing deleted
275 files to be represented in the attrib file correctly.
277 * Added support for environment variable BPC_SMB_PASSWD, which is the
278 client's smb password. This overrides the old environment variable
281 * Added taint cleanup for perl5.8 to lib/BackupPC/Lib.pm.
283 * Changed $tar_unpack_header format in BackupPC_tarExtract to correctly
284 handle files with trailing spaces.
286 * Added catching of SIG_PIPE to BackupPC_dump, and changed catch_signal
287 to ignore multiple signals of the same type.
289 * Added reporting of the largest number of hardlinks in the pool to the
292 * Adding reporting of syntax errors in the per-PC config.pl file.
294 * Updated BackupPC_sendEmail to handle language-specific email messages.
296 * Allow client (host) names to contain spaces. Spaces in host names
297 need to be escaped via "\" in the hosts file. The user of spaces in
298 host names is discouraged, but they should work. One feature that
299 doesn't work with host names that contain spaces is the highlighting
300 of that name in the log file display in the CGI interface. There are
301 no plans to fix this.
303 * Renamed $Conf{SmbClientTimeout} to $Conf{ClientTimeout}.
305 * Fixed all open() calls to use 3 argument form to fix handling of file
306 names with trailing whitespace. Also fixed CGI interface so these
307 file names are displayed correctly.
309 * Fixed new 2.0.0 CGI navigation bug that causes the top-level directory
310 to have a URL "&share=//boot&dir=" instead of "&share=/boot&dir=/".
311 Reported by Pascal Schelcher. Fixed similar problem reported by
314 * Added "PerlTaintCheck On" to the mod_perl section in the docs,
315 suggested by Tim Demarest.
317 #------------------------------------------------------------------------
318 # Version 1.5.0, 2 Aug 2002
319 #------------------------------------------------------------------------
321 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
322 option instead of --newer-mtime. Also removed --atime-preserve from
323 $Conf{TarClientCmd}. This makes the default settings work better
326 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
327 so it can correctly warn the user to stop it before upgrading. Reported
330 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
331 Reported by Guillaume Filion.
333 * Added LDAP setup to documentation from David Holland.
335 * Tar.pm now adds a "." to file paths that start with "/", so that all
336 tar paths are relative. From Ludovic Drolez.
338 #------------------------------------------------------------------------
339 # Version 1.5.0beta0, 30 Jun 2002
340 #------------------------------------------------------------------------
342 * A full set of restore options is now supported, including direct
343 restore via smbclient or tar or downloading a zip or tar file.
345 * Major additions to CGI script to support better directory navigation,
346 restore features and mod_perl. Also, file downloads from the CGI
347 interface now correctly preserve the file name and provide the
348 correct Content-Type for the most common types of files. Improved
349 directory navigation was contributed by Ryan Kucera.
351 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
352 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
353 create a zip archive of any portion of a backup.
355 * Substantial additions to BackupPC_tarCreate to support restore,
356 including modifying path names, handling hardlinks, fixing
357 support of old backups without attributes (pre-v1.4.0). Plus
358 BackupPC_tarCreate is now an offical part of the release.
359 (Lack of support for hardlinks was reported by John Stanley.)
361 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
364 * A unix domain socket is now used for communication between the CGI
365 interface and BackupPC. The original TCP socket is optional. Sockets
366 are correctly re-initialized if config.pl is updated with new socket
369 * For improved security messages over the unix or TCP socket are protected
370 via an MD5 digest based on a shared secret, a sequence number, a time
371 stamp and a unique per-connection number.
373 * Additions to configure.pl to support install of directory navigation
376 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
377 were set to a single string or list (in v1.4.0 only the case of
378 hash worked correctly). Reported by Phillip Bertolus.
380 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
381 client always subject to blackout, matching the comments in config.pl.
382 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
383 reported by Pascal Schelcher.
385 * Fixed byte and file totals for tar backups, reported by several users.
387 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
388 suggested by Erminio Baranzini.
390 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
391 well as shell escaping of tar arguments.
393 * Fixed entity encoding of 8-bit characters in the CGI interface.
395 * Added optional CGI headers in $Conf{CgiHeaders} that by default
396 is set to a no-cache pragma. Suggested by Benno Zuure.
398 #------------------------------------------------------------------------
399 # Version 1.4.0, 16 Mar 2002
400 #------------------------------------------------------------------------
402 * BackupPC now supports tar (in addition to smb) for extracting host
403 data. This is the most convenient option for linux/unix hosts.
404 Tar can be configured to run over ssh, rsh or to backup a local
405 nfs mount from the host.
407 * Support for special files, including symbolic links, fifo, character
408 and block device files has been added, so that all native linux/unix
409 file types can be correctly backed up when using tar transport.
410 Special files are all stored as regular files and the type attributes
411 are used to remember the original file type.
413 * All unix file attributes are now saved (and pooled when possible).
414 This includes user and group ownership, permissions, and modification
415 time. Smbclient also does a reasonable job of emulating unix
416 permissions (such as mtime), and these attributes get saved too.
418 * The new default is to not fill incremental dumps. configure.pl
419 automatically sets $Conf{IncrFill} to 0. The default was 1
420 (incrementals were filled with hardlinks). Since the CGI
421 script does filling at browsing time, there is no need to
422 fill incremental dumps.
424 * Backup file names are now stored in "mangled" form. Each node of a
425 path is preceded by "f", and special characters (\n, \r, % and /) are
426 URI-encoded as "%xx", where xx is the ascii character's hex value. So
427 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
428 was done mainly so meta-data could be stored alongside the backup
429 files without name collisions. In particular, the attributes for the
430 files in a directory are stored in a file called "attrib", and
431 mangling avoids file name collisions (I discarded the idea of having
432 a duplicate directory tree for every backup just to store the
433 attributes). Other meta-data (eg: rsync checksums) could be stored in
434 file names preceded by, eg, "c". There are two other benefits to
435 mangling: the share name might contain "/" (eg: "/home/craig" for tar
436 transport), and I wanted that represented as a single level in the
437 storage tree. Secondly, as files are written to NewFileList for later
438 processing by BackupPC_link, embedded newlines in the file's path
439 will cause problems which are avoided by mangling.
441 The CGI script undoes the mangling, so it is invisibe to the user.
442 Of course, old (unmangled) backups are still supported by the CGI
445 * Various changes to the CGI interface, BackupPC_Admin:
447 + Added button that allows users to manually start a full dump in
448 addition to the existing incremental dump.
450 + Added display of file attributes when browsing backups.
452 + Added an optional holdoff time specified by the user when canceling
453 a backup. BackupPC will not attempt any new backups for at least the
454 specified time. This holdoff time can be changed whether or not a
457 + Added supports for file mangling, and correct merging of unfilled
458 backups from mangled or unmangled (and compressed or uncompressed)
459 fulls when browsing or restoring.
461 + Only displays a "Start Incr Backup" button if there are already some
464 + For DHCP hosts, when a user tries to manually start a backup, add
465 a check for the netbios name of both the host the request came
466 from (REMOTE_ADDR) and the last known DHCP address for that host
467 to see if either address matches the host. If not, an error
468 message is display. The previous behavior was that only requests
469 from the client itself succeeded, and requests from other machines
472 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
473 is 1.4.0. The first digit is for major new releases, the middle digit
474 is for significant feature releases and improvements, and the last
475 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
476 and 1.03 as 1.0.0, ..., 1.3.0.
478 * BackupPC and the CGI script BackupPC_Admin now check that the effective
479 user id is correct to avoid accidentally launching BackupPC as the
480 wrong user or detecting CGI configuration problems. This behavior
481 can be turned off using the $Conf{BackupPCUserVerify} option.
483 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
484 support generic names for both smb and tar transport methods. The
485 CGI script checks for old names for backward compatibility.
487 * Major changed to Backup_dump to support new tar transport. All transport
488 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
491 * Added workaround for a bug in Samba's smbclient for files between 2GB
492 and 4GB. The file size in the tar header is incorrect. This allows
493 files up to 4GB to work with smbclient, rather than 2GB. To support
494 files larger than 2GB you must make sure perl is compiled with the
495 uselargefiles option (use "perl -V | egrep largefiles" to check) and
496 the pool directory must be on a file system that supports large files.
498 * Moved the pool writing code into a module BackupPC::PoolWrite. This
499 allows the clever file pool checking (digest, uncompressing, comparing
500 etc with minimum disk IO) to be used easily in multiple places (eg: it
501 is now used for writing attribute files so they can be pooled).
503 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
505 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
506 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
507 on one user's machine was world writable and perl -T correctly
510 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
511 Thanks to Kyle Amon for sending the fix. Decided to move the
512 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
513 now configure.pl tries to come up with a sensible default based on
516 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
517 share name (eg: C$). Thanks to Jules Agee for this fix. Also
518 changed the default config.pl so that single quotes are used
519 everywhere so that people don't get tripped up putting '$' inside
520 double-quoted strings.
522 #------------------------------------------------------------------------
523 # Version 1.03, 9 Dec 2001
524 #------------------------------------------------------------------------
526 * BackupPC now has full support for compression. There are now two
527 pool areas, the original pool for uncompressed files, and cpool for
528 compressed files. The compression is done by Compress::Zlib.
529 Compression reduces the pool disk usage by around 40%, although your
530 mileage may vary. Compression is optional and can also be specified on
531 a per-PC basis (although this will cost more pool storage since many
532 backup files will have to be stored in both compressed and
535 * A new script, BackupPC_compressPool, can be run to compress the entire
536 pool. This is used once to migrate all the pool data from uncompressed
537 to compressed on existing installations. Read the documentation
538 (Installing BackupPC/Compressing an existing pool) before running
539 BackupPC_compressPool!
541 Alternatively, compression can simply be turned on and all new backups
542 will be compressed. Both old (uncompressed) and new (compressed)
543 backups can be browsed and viewed. Eventually, the old backups will
544 expire and all the pool data will be compressed. However, until the
545 old backups expire, this approach could require 60% or more additional
546 pool storage space to store both uncompressed and compressed versions
549 * Significant improvements to the cgi interface, BackupPC_Admin:
551 - much better layout navigation
552 - handles compressed backup files and compressed log files
553 - handles unfilled incremental dumps
554 - better backup directory browsing navigation
555 - reports compression statistics
556 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
557 - Additional customization with $Conf{CgiHeaderFontType},
558 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
559 $Conf{CgiHeaderBgColor}.
561 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
562 file and queues the PCs itself. Like config.pl, BackupPC will
563 re-read the hosts file on each wakeup if its modification time
564 changes, or upon a SIGHUP. This also makes for better behavior
565 when adding a host: if you add hosts, simply send a SIGHUP to
566 BackupPC or wait for the next wakeup.
568 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
570 * BackupPC_dump keeps track of compressed file sizes so that compression
571 statistics can be reported by the cgi interface.
573 * Aging of old log files now handles compressed log files (.z extension).
575 * Added configuration option $Conf{IncrFill} to specify whether
576 incremental dumps should be filled in. Old behavior was that
577 filling was on. Now it's optional. See config.pl for more
580 * BackupPC_nightly now cleans and generates statistics for both
581 the uncompressed pool and compressed pool (cpool).
583 * Added new utility script BackupPC_zcat that can be used to
584 uncompresses BackupPC files.
586 * configure.pl offers various options related to compression,
587 depending upon whether this is a new install or upgrade,
588 and whether or not Compress::Zlib is installed.
590 * configure.pl now makes a backup copy of config.pl before
591 config.pl is updated.
593 * added three new fields to the backups file to handle optional
594 filling and compression stats.
596 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
597 on each dhcp host once each night to verify that very old backups are
598 expired. This ensures that very old backups are expired even if
599 the dhcp host has not been on the network for a long time.
601 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
602 even if compression was off. Thanks to Steve Holmes for reporting
605 * fixed bug that caused a BackupPC queue to get blocked when a backup
606 cancel attempt was made during the BackupPC_link phase.
608 #------------------------------------------------------------------------
609 # Version 1.02, 28 Oct 2001.
610 #------------------------------------------------------------------------
612 * Added new script BackupPC_tarExtract to extract the smbclient tar
613 archive. This reduces disk writes by perhaps 90-95% and disk reads by
614 50%. Previously, tar was used to extract and write everything to disk.
615 Then BackupPC_dump would read enough of each file to compute the MD5
616 digest, and then compare the full file with candidate pool files. So
617 for each 1MB file that matches a single file in the pool, there would
618 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
620 BackupPC_tarExtract instead extracts the archive using a 1MB memory
621 buffer. This allows the MD5 digest to be computed without touching the
622 disk. Next, any potential pool file compares are done by comparing the
623 pool file against the incoming tar data in memory, which only requires
624 the pool file to be read. So for each 1MB file that matches a single
625 file in the pool, there are now no disk writes, and only 1MB of reads.
626 BackupPC_tarExtract handles arbitrary size files and repeated
627 potential pool matches. If the incoming file doesn't match the pool
628 then it is written to disk (once the pool is mature this happens maybe
631 * Substantial changes to BackupPC_dump:
633 + BackupPC_tarExtract is now used in place of tar.
635 + BackupPC_dump now reads the output from both smbclient and
636 BackupPC_tarExtract and merges them into SmbLOG.
638 + Named pipes are no longer used to connect smbclient to tar
639 (now BackupPC_tarExtract). Regular pipes are used instead.
640 This avoids the need to system mknod or mkfifo.
642 + Locked files on the client that can't be read by smbclient
643 previously were filled with 0x0 bytes by smbclient, meaning
644 tar extracted a useless file filled with 0x0 bytes. Now,
645 BackupPC_dump watches the output of smbclient and removes
646 any files that smbclient couldn't read. This avoids storing
647 useless files. It tries to replace such files with a hard link
648 to a previous dump. These actions appear in the log file.
650 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
651 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
652 reading and writing compressed and regular files and provides all the
653 hooks for compression support in BackupPC (should be supported in next
654 version). BackupPC::FileIO also does efficient writing of files that
655 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
656 helpful when smbclient reads a locked file, and it fills the tar
657 output with a file of the correct size but all 0x0. Such files will be
658 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
659 writes such files efficiently (as sparse files), meaning just a few
660 blocks of disk space will be needed even if the file is large.
662 * alive/dead counting for blackout now works correctly for DHCP hosts.
664 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
665 killed and restarted with backups running.
667 * added extra non blocking select() in BackupPC to make sure the socket
670 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
672 * Updated BackupPC_sendEmail to correctly parse the locked file
673 error from 2.2.1a smbclient, so that missing Outlook file emails
674 can be correctly sent.
676 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
677 hostname read from the hosts file.
679 * BackupPC_Admin provides general summary when the host name is empty.
681 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
683 * configure.pl complains if BackupPC is already running, reminding you
684 to stop it before upgrading.
686 * updated documentation, and fixed auto-insertion of config.pl into
687 BackupPC.pod (previously the last config parameter was left out of
690 #------------------------------------------------------------------------
691 # Version 1.01, 30 Sep 2001
692 #------------------------------------------------------------------------
694 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
696 * BackupPC_sendMail now reads the optional per-PC config file, allowing
697 email configuration parameters to be set on a per-PC basis.
699 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
701 #------------------------------------------------------------------------
702 # Version 1.00, 21 Sep 2001
703 #------------------------------------------------------------------------
705 * Initial release of BackupPC on sourceforge.net.