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 * Support for rsync and rsyncd backup and restore. Changes to
25 BackupPC_dump, BackupPC_restore, and new modules BackupPC::Xfer::Rsync
26 and BackupPC::Xfer::RsyncFileIO.
28 * Added internationalization (i18n) code from Xavier Nicollet,
29 with additions from Guillaume Filion. Voila! BackupPC_Admin
30 now supports English and French, and adding more languages is
31 now easy. New config paramater $Conf{Language} sets the language.
33 * Added Spanish translation es.pm from Javier.
35 * Added optional user-defined pre/post dump/restore commands, allowing
36 things like database shutdown/startup for dumps.
38 * Changed the way hosts are found.
40 * Added $Conf{ClientNameAlias}, which allows the name of the physical
41 client machine to be set. This allows several different backup
42 "hosts" to all refer to the same physical machine, which is
43 convenient if several different types of data need to be backed
44 up, or if different parameters are needed for different parts of
47 * Replaced $Conf{PingArgs} with $Conf{PingCmd}, added $Conf{DfCmd},
48 $Conf{NmbLookupCmd} allowing all these commands to be fully
49 configured. Also, all commands can also now be fragments of
52 * Moved all smbclient commands into the config.pl file so the specific
53 arguments can be customized. New config parameters are
54 $Conf{SmbClientFullCmd}, $Conf{SmbClientIncrCmd} and
55 $Conf{SmbClientRestoreCmd}.
57 * Added new BackupPC::View module that creates views of backups
58 (handling merging etc). Updated BackupPC_Admin, BackupPC_zipCreate
59 and BackupPC_tarCreate to use BackupPC::View. This removes lots
60 of merging and mangling code from the higher-level code.
62 * Added code from Toby Johnson that allows additional users to be
63 specified in the hosts file; these users can also view/start/stop
64 and restore backups for that host. Also added a new config
65 setting $Conf{CgiNavBarAdminAllHosts} that allows all hosts to
66 be listed in the left nav bar for admins.
68 * Added $Conf{HardLinkMax} (default 31999) which sets the limit on
69 the maximum number of hardlinks per file in the pool. If a file
70 ever gets to this number of links a new pool file is created to
71 handle additional links.
73 * Added $Conf{PerlModuleLoad}, which allows optional additional perl
76 * Added $Conf{EMailUserDestDomain} and other EMail config settings to
77 allow language-specific default messages to be overridden.
79 * Added BPC_FTYPE_DELETED to lib/BackupPC/Attrib.pm, allowing deleted
80 files to be represented in the attrib file correctly.
82 * Added support for environment variable BPC_SMB_PASSWD, which is the
83 client's smb password. This overrides the old environment variable
86 * Added taint cleanup for perl5.8 to lib/BackupPC/Lib.pm.
88 * Changed $tar_unpack_header format in BackupPC_tarExtract to correctly
89 handle files with trailing spaces.
91 * Added catching of SIG_PIPE to BackupPC_dump, and changed catch_signal
92 to ignore multiple signals of the same type.
94 * Added binmode(STDIN) to BackupPC_tarExtract, suggested by Pat LoPresti
95 to fix a problem a RedHat8 with perl 5.8.0. It's unclear why this
96 helps, but it should be benign. See:
97 http://sourceforge.net/mailarchive/forum.php?thread_id=1853018&forum_id=503
99 * Added reporting of the largest number of hardlinks in the pool to the
102 * Adding reporting of syntax errors in the per-PC config.pl file.
104 * Updated BackupPC_sendEmail to handle language-specific email messages.
106 * Allow client (host) names to contain spaces. Spaces in host names
107 need to be escaped via "\" in the hosts file. The user of spaces in
108 host names is discouraged, but they should work. One feature that
109 doesn't work with host names that contain spaces is the highlighting
110 of that name in the log file display in the CGI interface. There are
111 no plans to fix this.
113 * Renamed $Conf{SmbClientTimeout} to $Conf{ClientTimeout}.
115 * Fixed all open() calls to use 3 argument form to fix handling of file
116 names with trailing whitespace. Also fixed CGI interface so these
117 file names are displayed correctly.
119 * Fixed new 2.0.0 CGI navigation bug that causes the top-level directory
120 to have a URL "&share=//boot&dir=" instead of "&share=/boot&dir=/".
121 Reported by Pascal Schelcher. Fixed similar problem reported by
124 * Added "PerlTaintCheck On" to the mod_perl section in the docs,
125 suggested by Tim Demarest.
127 #------------------------------------------------------------------------
128 # Version 1.5.0, 2 Aug 2002
129 #------------------------------------------------------------------------
131 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
132 option instead of --newer-mtime. Also removed --atime-preserve from
133 $Conf{TarClientCmd}. This makes the default settings work better
136 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
137 so it can correctly warn the user to stop it before upgrading. Reported
140 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
141 Reported by Guillaume Filion.
143 * Added LDAP setup to documentation from David Holland.
145 * Tar.pm now adds a "." to file paths that start with "/", so that all
146 tar paths are relative. From Ludovic Drolez.
148 #------------------------------------------------------------------------
149 # Version 1.5.0beta0, 30 Jun 2002
150 #------------------------------------------------------------------------
152 * A full set of restore options is now supported, including direct
153 restore via smbclient or tar or downloading a zip or tar file.
155 * Major additions to CGI script to support better directory navigation,
156 restore features and mod_perl. Also, file downloads from the CGI
157 interface now correctly preserve the file name and provide the
158 correct Content-Type for the most common types of files. Improved
159 directory navigation was contributed by Ryan Kucera.
161 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
162 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
163 create a zip archive of any portion of a backup.
165 * Substantial additions to BackupPC_tarCreate to support restore,
166 including modifying path names, handling hardlinks, fixing
167 support of old backups without attributes (pre-v1.4.0). Plus
168 BackupPC_tarCreate is now an offical part of the release.
169 (Lack of support for hardlinks was reported by John Stanley.)
171 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
174 * A unix domain socket is now used for communication between the CGI
175 interface and BackupPC. The original TCP socket is optional. Sockets
176 are correctly re-initialized if config.pl is updated with new socket
179 * For improved security messages over the unix or TCP socket are protected
180 via an MD5 digest based on a shared secret, a sequence number, a time
181 stamp and a unique per-connection number.
183 * Additions to configure.pl to support install of directory navigation
186 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
187 were set to a single string or list (in v1.4.0 only the case of
188 hash worked correctly). Reported by Phillip Bertolus.
190 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
191 client always subject to blackout, matching the comments in config.pl.
192 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
193 reported by Pascal Schelcher.
195 * Fixed byte and file totals for tar backups, reported by several users.
197 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
198 suggested by Erminio Baranzini.
200 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
201 well as shell escaping of tar arguments.
203 * Fixed entity encoding of 8-bit characters in the CGI interface.
205 * Added optional CGI headers in $Conf{CgiHeaders} that by default
206 is set to a no-cache pragma. Suggested by Benno Zuure.
208 #------------------------------------------------------------------------
209 # Version 1.4.0, 16 Mar 2002
210 #------------------------------------------------------------------------
212 * BackupPC now supports tar (in addition to smb) for extracting host
213 data. This is the most convenient option for linux/unix hosts.
214 Tar can be configured to run over ssh, rsh or to backup a local
215 nfs mount from the host.
217 * Support for special files, including symbolic links, fifo, character
218 and block device files has been added, so that all native linux/unix
219 file types can be correctly backed up when using tar transport.
220 Special files are all stored as regular files and the type attributes
221 are used to remember the original file type.
223 * All unix file attributes are now saved (and pooled when possible).
224 This includes user and group ownership, permissions, and modification
225 time. Smbclient also does a reasonable job of emulating unix
226 permissions (such as mtime), and these attributes get saved too.
228 * The new default is to not fill incremental dumps. configure.pl
229 automatically sets $Conf{IncrFill} to 0. The default was 1
230 (incrementals were filled with hardlinks). Since the CGI
231 script does filling at browsing time, there is no need to
232 fill incremental dumps.
234 * Backup file names are now stored in "mangled" form. Each node of a
235 path is preceded by "f", and special characters (\n, \r, % and /) are
236 URI-encoded as "%xx", where xx is the ascii character's hex value. So
237 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
238 was done mainly so meta-data could be stored alongside the backup
239 files without name collisions. In particular, the attributes for the
240 files in a directory are stored in a file called "attrib", and
241 mangling avoids file name collisions (I discarded the idea of having
242 a duplicate directory tree for every backup just to store the
243 attributes). Other meta-data (eg: rsync checksums) could be stored in
244 file names preceded by, eg, "c". There are two other benefits to
245 mangling: the share name might contain "/" (eg: "/home/craig" for tar
246 transport), and I wanted that represented as a single level in the
247 storage tree. Secondly, as files are written to NewFileList for later
248 processing by BackupPC_link, embedded newlines in the file's path
249 will cause problems which are avoided by mangling.
251 The CGI script undoes the mangling, so it is invisibe to the user.
252 Of course, old (unmangled) backups are still supported by the CGI
255 * Various changes to the CGI interface, BackupPC_Admin:
257 + Added button that allows users to manually start a full dump in
258 addition to the existing incremental dump.
260 + Added display of file attributes when browsing backups.
262 + Added an optional holdoff time specified by the user when canceling
263 a backup. BackupPC will not attempt any new backups for at least the
264 specified time. This holdoff time can be changed whether or not a
267 + Added supports for file mangling, and correct merging of unfilled
268 backups from mangled or unmangled (and compressed or uncompressed)
269 fulls when browsing or restoring.
271 + Only displays a "Start Incr Backup" button if there are already some
274 + For DHCP hosts, when a user tries to manually start a backup, add
275 a check for the netbios name of both the host the request came
276 from (REMOTE_ADDR) and the last known DHCP address for that host
277 to see if either address matches the host. If not, an error
278 message is display. The previous behavior was that only requests
279 from the client itself succeeded, and requests from other machines
282 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
283 is 1.4.0. The first digit is for major new releases, the middle digit
284 is for significant feature releases and improvements, and the last
285 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
286 and 1.03 as 1.0.0, ..., 1.3.0.
288 * BackupPC and the CGI script BackupPC_Admin now check that the effective
289 user id is correct to avoid accidentally launching BackupPC as the
290 wrong user or detecting CGI configuration problems. This behavior
291 can be turned off using the $Conf{BackupPCUserVerify} option.
293 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
294 support generic names for both smb and tar transport methods. The
295 CGI script checks for old names for backward compatibility.
297 * Major changed to Backup_dump to support new tar transport. All transport
298 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
301 * Added workaround for a bug in Samba's smbclient for files between 2GB
302 and 4GB. The file size in the tar header is incorrect. This allows
303 files up to 4GB to work with smbclient, rather than 2GB. To support
304 files larger than 2GB you must make sure perl is compiled with the
305 uselargefiles option (use "perl -V | egrep largefiles" to check) and
306 the pool directory must be on a file system that supports large files.
308 * Moved the pool writing code into a module BackupPC::PoolWrite. This
309 allows the clever file pool checking (digest, uncompressing, comparing
310 etc with minimum disk IO) to be used easily in multiple places (eg: it
311 is now used for writing attribute files so they can be pooled).
313 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
315 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
316 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
317 on one user's machine was world writable and perl -T correctly
320 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
321 Thanks to Kyle Amon for sending the fix. Decided to move the
322 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
323 now configure.pl tries to come up with a sensible default based on
326 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
327 share name (eg: C$). Thanks to Jules Agee for this fix. Also
328 changed the default config.pl so that single quotes are used
329 everywhere so that people don't get tripped up putting '$' inside
330 double-quoted strings.
332 #------------------------------------------------------------------------
333 # Version 1.03, 9 Dec 2001
334 #------------------------------------------------------------------------
336 * BackupPC now has full support for compression. There are now two
337 pool areas, the original pool for uncompressed files, and cpool for
338 compressed files. The compression is done by Compress::Zlib.
339 Compression reduces the pool disk usage by around 40%, although your
340 mileage may vary. Compression is optional and can also be specified on
341 a per-PC basis (although this will cost more pool storage since many
342 backup files will have to be stored in both compressed and
345 * A new script, BackupPC_compressPool, can be run to compress the entire
346 pool. This is used once to migrate all the pool data from uncompressed
347 to compressed on existing installations. Read the documentation
348 (Installing BackupPC/Compressing an existing pool) before running
349 BackupPC_compressPool!
351 Alternatively, compression can simply be turned on and all new backups
352 will be compressed. Both old (uncompressed) and new (compressed)
353 backups can be browsed and viewed. Eventually, the old backups will
354 expire and all the pool data will be compressed. However, until the
355 old backups expire, this approach could require 60% or more additional
356 pool storage space to store both uncompressed and compressed versions
359 * Significant improvements to the cgi interface, BackupPC_Admin:
361 - much better layout navigation
362 - handles compressed backup files and compressed log files
363 - handles unfilled incremental dumps
364 - better backup directory browsing navigation
365 - reports compression statistics
366 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
367 - Additional customization with $Conf{CgiHeaderFontType},
368 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
369 $Conf{CgiHeaderBgColor}.
371 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
372 file and queues the PCs itself. Like config.pl, BackupPC will
373 re-read the hosts file on each wakeup if its modification time
374 changes, or upon a SIGHUP. This also makes for better behavior
375 when adding a host: if you add hosts, simply send a SIGHUP to
376 BackupPC or wait for the next wakeup.
378 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
380 * BackupPC_dump keeps track of compressed file sizes so that compression
381 statistics can be reported by the cgi interface.
383 * Aging of old log files now handles compressed log files (.z extension).
385 * Added configuration option $Conf{IncrFill} to specify whether
386 incremental dumps should be filled in. Old behavior was that
387 filling was on. Now it's optional. See config.pl for more
390 * BackupPC_nightly now cleans and generates statistics for both
391 the uncompressed pool and compressed pool (cpool).
393 * Added new utility script BackupPC_zcat that can be used to
394 uncompresses BackupPC files.
396 * configure.pl offers various options related to compression,
397 depending upon whether this is a new install or upgrade,
398 and whether or not Compress::Zlib is installed.
400 * configure.pl now makes a backup copy of config.pl before
401 config.pl is updated.
403 * added three new fields to the backups file to handle optional
404 filling and compression stats.
406 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
407 on each dhcp host once each night to verify that very old backups are
408 expired. This ensures that very old backups are expired even if
409 the dhcp host has not been on the network for a long time.
411 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
412 even if compression was off. Thanks to Steve Holmes for reporting
415 * fixed bug that caused a BackupPC queue to get blocked when a backup
416 cancel attempt was made during the BackupPC_link phase.
418 #------------------------------------------------------------------------
419 # Version 1.02, 28 Oct 2001.
420 #------------------------------------------------------------------------
422 * Added new script BackupPC_tarExtract to extract the smbclient tar
423 archive. This reduces disk writes by perhaps 90-95% and disk reads by
424 50%. Previously, tar was used to extract and write everything to disk.
425 Then BackupPC_dump would read enough of each file to compute the MD5
426 digest, and then compare the full file with candidate pool files. So
427 for each 1MB file that matches a single file in the pool, there would
428 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
430 BackupPC_tarExtract instead extracts the archive using a 1MB memory
431 buffer. This allows the MD5 digest to be computed without touching the
432 disk. Next, any potential pool file compares are done by comparing the
433 pool file against the incoming tar data in memory, which only requires
434 the pool file to be read. So for each 1MB file that matches a single
435 file in the pool, there are now no disk writes, and only 1MB of reads.
436 BackupPC_tarExtract handles arbitrary size files and repeated
437 potential pool matches. If the incoming file doesn't match the pool
438 then it is written to disk (once the pool is mature this happens maybe
441 * Substantial changes to BackupPC_dump:
443 + BackupPC_tarExtract is now used in place of tar.
445 + BackupPC_dump now reads the output from both smbclient and
446 BackupPC_tarExtract and merges them into SmbLOG.
448 + Named pipes are no longer used to connect smbclient to tar
449 (now BackupPC_tarExtract). Regular pipes are used instead.
450 This avoids the need to system mknod or mkfifo.
452 + Locked files on the client that can't be read by smbclient
453 previously were filled with 0x0 bytes by smbclient, meaning
454 tar extracted a useless file filled with 0x0 bytes. Now,
455 BackupPC_dump watches the output of smbclient and removes
456 any files that smbclient couldn't read. This avoids storing
457 useless files. It tries to replace such files with a hard link
458 to a previous dump. These actions appear in the log file.
460 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
461 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
462 reading and writing compressed and regular files and provides all the
463 hooks for compression support in BackupPC (should be supported in next
464 version). BackupPC::FileIO also does efficient writing of files that
465 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
466 helpful when smbclient reads a locked file, and it fills the tar
467 output with a file of the correct size but all 0x0. Such files will be
468 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
469 writes such files efficiently (as sparse files), meaning just a few
470 blocks of disk space will be needed even if the file is large.
472 * alive/dead counting for blackout now works correctly for DHCP hosts.
474 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
475 killed and restarted with backups running.
477 * added extra non blocking select() in BackupPC to make sure the socket
480 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
482 * Updated BackupPC_sendEmail to correctly parse the locked file
483 error from 2.2.1a smbclient, so that missing Outlook file emails
484 can be correctly sent.
486 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
487 hostname read from the hosts file.
489 * BackupPC_Admin provides general summary when the host name is empty.
491 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
493 * configure.pl complains if BackupPC is already running, reminding you
494 to stop it before upgrading.
496 * updated documentation, and fixed auto-insertion of config.pl into
497 BackupPC.pod (previously the last config parameter was left out of
500 #------------------------------------------------------------------------
501 # Version 1.01, 30 Sep 2001
502 #------------------------------------------------------------------------
504 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
506 * BackupPC_sendMail now reads the optional per-PC config file, allowing
507 email configuration parameters to be set on a per-PC basis.
509 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
511 #------------------------------------------------------------------------
512 # Version 1.00, 21 Sep 2001
513 #------------------------------------------------------------------------
515 * Initial release of BackupPC on sourceforge.net.