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. Changes to BackupPC_dump and new
25 modules BackupPC::Xfer::Rsync and BackupPC::Xfer::RsyncFileIO.
27 * Added new BackupPC::View module that creates views of backups
28 (handling merging etc). Updated BackupPC_Admin, BackupPC_zipCreate
29 and BackupPC_tarCreate to use BackupPC::View. This removes lots
30 of merging and mangling code from the higher-level code.
32 * Added internationalization (i18n) code from Xavier Nicollet.
33 Voila! BackupPC_Admin now supports English and French, and
34 adding more languages is now easy.
36 * Added patch from Toby Johnson that allows additional users to be
37 specified in the hosts file; these users can also view/start/stop
38 and restore backups for that host. Also added a new config
39 setting $Conf{CgiNavBarAdminAllHosts} that allows all hosts to
40 be listed in the left nav bar for admins.
42 * Added "PerlTaintCheck On" to the mod_perl section in the docs,
43 suggested by Tim Demarest.
45 #------------------------------------------------------------------------
46 # Version 1.5.0, 2 Aug 2002
47 #------------------------------------------------------------------------
49 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
50 option instead of --newer-mtime. Also removed --atime-preserve from
51 $Conf{TarClientCmd}. This makes the default settings work better
54 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
55 so it can correctly warn the user to stop it before upgrading. Reported
58 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
59 Reported by Guillaume Filion.
61 * Added LDAP setup to documentation from David Holland.
63 * Tar.pm now adds a "." to file paths that start with "/", so that all
64 tar paths are relative. From Ludovic Drolez.
66 #------------------------------------------------------------------------
67 # Version 1.5.0beta0, 30 Jun 2002
68 #------------------------------------------------------------------------
70 * A full set of restore options is now supported, including direct
71 restore via smbclient or tar or downloading a zip or tar file.
73 * Major additions to CGI script to support better directory navigation,
74 restore features and mod_perl. Also, file downloads from the CGI
75 interface now correctly preserve the file name and provide the
76 correct Content-Type for the most common types of files. Improved
77 directory navigation was contributed by Ryan Kucera.
79 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
80 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
81 create a zip archive of any portion of a backup.
83 * Substantial additions to BackupPC_tarCreate to support restore,
84 including modifying path names, handling hardlinks, fixing
85 support of old backups without attributes (pre-v1.4.0). Plus
86 BackupPC_tarCreate is now an offical part of the release.
87 (Lack of support for hardlinks was reported by John Stanley.)
89 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
92 * A unix domain socket is now used for communication between the CGI
93 interface and BackupPC. The original TCP socket is optional. Sockets
94 are correctly re-initialized if config.pl is updated with new socket
97 * For improved security messages over the unix or TCP socket are protected
98 via an MD5 digest based on a shared secret, a sequence number, a time
99 stamp and a unique per-connection number.
101 * Additions to configure.pl to support install of directory navigation
104 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
105 were set to a single string or list (in v1.4.0 only the case of
106 hash worked correctly). Reported by Phillip Bertolus.
108 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
109 client always subject to blackout, matching the comments in config.pl.
110 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
111 reported by Pascal Schelcher.
113 * Fixed byte and file totals for tar backups, reported by several users.
115 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
116 suggested by Erminio Baranzini.
118 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
119 well as shell escaping of tar arguments.
121 * Fixed entity encoding of 8-bit characters in the CGI interface.
123 * Added optional CGI headers in $Conf{CgiHeaders} that by default
124 is set to a no-cache pragma. Suggested by Benno Zuure.
126 #------------------------------------------------------------------------
127 # Version 1.4.0, 16 Mar 2002
128 #------------------------------------------------------------------------
130 * BackupPC now supports tar (in addition to smb) for extracting host
131 data. This is the most convenient option for linux/unix hosts.
132 Tar can be configured to run over ssh, rsh or to backup a local
133 nfs mount from the host.
135 * Support for special files, including symbolic links, fifo, character
136 and block device files has been added, so that all native linux/unix
137 file types can be correctly backed up when using tar transport.
138 Special files are all stored as regular files and the type attributes
139 are used to remember the original file type.
141 * All unix file attributes are now saved (and pooled when possible).
142 This includes user and group ownership, permissions, and modification
143 time. Smbclient also does a reasonable job of emulating unix
144 permissions (such as mtime), and these attributes get saved too.
146 * The new default is to not fill incremental dumps. configure.pl
147 automatically sets $Conf{IncrFill} to 0. The default was 1
148 (incrementals were filled with hardlinks). Since the CGI
149 script does filling at browsing time, there is no need to
150 fill incremental dumps.
152 * Backup file names are now stored in "mangled" form. Each node of a
153 path is preceded by "f", and special characters (\n, \r, % and /) are
154 URI-encoded as "%xx", where xx is the ascii character's hex value. So
155 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
156 was done mainly so meta-data could be stored alongside the backup
157 files without name collisions. In particular, the attributes for the
158 files in a directory are stored in a file called "attrib", and
159 mangling avoids file name collisions (I discarded the idea of having
160 a duplicate directory tree for every backup just to store the
161 attributes). Other meta-data (eg: rsync checksums) could be stored in
162 file names preceded by, eg, "c". There are two other benefits to
163 mangling: the share name might contain "/" (eg: "/home/craig" for tar
164 transport), and I wanted that represented as a single level in the
165 storage tree. Secondly, as files are written to NewFileList for later
166 processing by BackupPC_link, embedded newlines in the file's path
167 will cause problems which are avoided by mangling.
169 The CGI script undoes the mangling, so it is invisibe to the user.
170 Of course, old (unmangled) backups are still supported by the CGI
173 * Various changes to the CGI interface, BackupPC_Admin:
175 + Added button that allows users to manually start a full dump in
176 addition to the existing incremental dump.
178 + Added display of file attributes when browsing backups.
180 + Added an optional holdoff time specified by the user when canceling
181 a backup. BackupPC will not attempt any new backups for at least the
182 specified time. This holdoff time can be changed whether or not a
185 + Added supports for file mangling, and correct merging of unfilled
186 backups from mangled or unmangled (and compressed or uncompressed)
187 fulls when browsing or restoring.
189 + Only displays a "Start Incr Backup" button if there are already some
192 + For DHCP hosts, when a user tries to manually start a backup, add
193 a check for the netbios name of both the host the request came
194 from (REMOTE_ADDR) and the last known DHCP address for that host
195 to see if either address matches the host. If not, an error
196 message is display. The previous behavior was that only requests
197 from the client itself succeeded, and requests from other machines
200 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
201 is 1.4.0. The first digit is for major new releases, the middle digit
202 is for significant feature releases and improvements, and the last
203 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
204 and 1.03 as 1.0.0, ..., 1.3.0.
206 * BackupPC and the CGI script BackupPC_Admin now check that the effective
207 user id is correct to avoid accidentally launching BackupPC as the
208 wrong user or detecting CGI configuration problems. This behavior
209 can be turned off using the $Conf{BackupPCUserVerify} option.
211 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
212 support generic names for both smb and tar transport methods. The
213 CGI script checks for old names for backward compatibility.
215 * Major changed to Backup_dump to support new tar transport. All transport
216 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
219 * Added workaround for a bug in Samba's smbclient for files between 2GB
220 and 4GB. The file size in the tar header is incorrect. This allows
221 files up to 4GB to work with smbclient, rather than 2GB. To support
222 files larger than 2GB you must make sure perl is compiled with the
223 uselargefiles option (use "perl -V | egrep largefiles" to check) and
224 the pool directory must be on a file system that supports large files.
226 * Moved the pool writing code into a module BackupPC::PoolWrite. This
227 allows the clever file pool checking (digest, uncompressing, comparing
228 etc with minimum disk IO) to be used easily in multiple places (eg: it
229 is now used for writing attribute files so they can be pooled).
231 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
233 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
234 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
235 on one user's machine was world writable and perl -T correctly
238 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
239 Thanks to Kyle Amon for sending the fix. Decided to move the
240 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
241 now configure.pl tries to come up with a sensible default based on
244 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
245 share name (eg: C$). Thanks to Jules Agee for this fix. Also
246 changed the default config.pl so that single quotes are used
247 everywhere so that people don't get tripped up putting '$' inside
248 double-quoted strings.
250 #------------------------------------------------------------------------
251 # Version 1.03, 9 Dec 2001
252 #------------------------------------------------------------------------
254 * BackupPC now has full support for compression. There are now two
255 pool areas, the original pool for uncompressed files, and cpool for
256 compressed files. The compression is done by Compress::Zlib.
257 Compression reduces the pool disk usage by around 40%, although your
258 mileage may vary. Compression is optional and can also be specified on
259 a per-PC basis (although this will cost more pool storage since many
260 backup files will have to be stored in both compressed and
263 * A new script, BackupPC_compressPool, can be run to compress the entire
264 pool. This is used once to migrate all the pool data from uncompressed
265 to compressed on existing installations. Read the documentation
266 (Installing BackupPC/Compressing an existing pool) before running
267 BackupPC_compressPool!
269 Alternatively, compression can simply be turned on and all new backups
270 will be compressed. Both old (uncompressed) and new (compressed)
271 backups can be browsed and viewed. Eventually, the old backups will
272 expire and all the pool data will be compressed. However, until the
273 old backups expire, this approach could require 60% or more additional
274 pool storage space to store both uncompressed and compressed versions
277 * Significant improvements to the cgi interface, BackupPC_Admin:
279 - much better layout navigation
280 - handles compressed backup files and compressed log files
281 - handles unfilled incremental dumps
282 - better backup directory browsing navigation
283 - reports compression statistics
284 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
285 - Additional customization with $Conf{CgiHeaderFontType},
286 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
287 $Conf{CgiHeaderBgColor}.
289 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
290 file and queues the PCs itself. Like config.pl, BackupPC will
291 re-read the hosts file on each wakeup if its modification time
292 changes, or upon a SIGHUP. This also makes for better behavior
293 when adding a host: if you add hosts, simply send a SIGHUP to
294 BackupPC or wait for the next wakeup.
296 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
298 * BackupPC_dump keeps track of compressed file sizes so that compression
299 statistics can be reported by the cgi interface.
301 * Aging of old log files now handles compressed log files (.z extension).
303 * Added configuration option $Conf{IncrFill} to specify whether
304 incremental dumps should be filled in. Old behavior was that
305 filling was on. Now it's optional. See config.pl for more
308 * BackupPC_nightly now cleans and generates statistics for both
309 the uncompressed pool and compressed pool (cpool).
311 * Added new utility script BackupPC_zcat that can be used to
312 uncompresses BackupPC files.
314 * configure.pl offers various options related to compression,
315 depending upon whether this is a new install or upgrade,
316 and whether or not Compress::Zlib is installed.
318 * configure.pl now makes a backup copy of config.pl before
319 config.pl is updated.
321 * added three new fields to the backups file to handle optional
322 filling and compression stats.
324 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
325 on each dhcp host once each night to verify that very old backups are
326 expired. This ensures that very old backups are expired even if
327 the dhcp host has not been on the network for a long time.
329 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
330 even if compression was off. Thanks to Steve Holmes for reporting
333 * fixed bug that caused a BackupPC queue to get blocked when a backup
334 cancel attempt was made during the BackupPC_link phase.
336 #------------------------------------------------------------------------
337 # Version 1.02, 28 Oct 2001.
338 #------------------------------------------------------------------------
340 * Added new script BackupPC_tarExtract to extract the smbclient tar
341 archive. This reduces disk writes by perhaps 90-95% and disk reads by
342 50%. Previously, tar was used to extract and write everything to disk.
343 Then BackupPC_dump would read enough of each file to compute the MD5
344 digest, and then compare the full file with candidate pool files. So
345 for each 1MB file that matches a single file in the pool, there would
346 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
348 BackupPC_tarExtract instead extracts the archive using a 1MB memory
349 buffer. This allows the MD5 digest to be computed without touching the
350 disk. Next, any potential pool file compares are done by comparing the
351 pool file against the incoming tar data in memory, which only requires
352 the pool file to be read. So for each 1MB file that matches a single
353 file in the pool, there are now no disk writes, and only 1MB of reads.
354 BackupPC_tarExtract handles arbitrary size files and repeated
355 potential pool matches. If the incoming file doesn't match the pool
356 then it is written to disk (once the pool is mature this happens maybe
359 * Substantial changes to BackupPC_dump:
361 + BackupPC_tarExtract is now used in place of tar.
363 + BackupPC_dump now reads the output from both smbclient and
364 BackupPC_tarExtract and merges them into SmbLOG.
366 + Named pipes are no longer used to connect smbclient to tar
367 (now BackupPC_tarExtract). Regular pipes are used instead.
368 This avoids the need to system mknod or mkfifo.
370 + Locked files on the client that can't be read by smbclient
371 previously were filled with 0x0 bytes by smbclient, meaning
372 tar extracted a useless file filled with 0x0 bytes. Now,
373 BackupPC_dump watches the output of smbclient and removes
374 any files that smbclient couldn't read. This avoids storing
375 useless files. It tries to replace such files with a hard link
376 to a previous dump. These actions appear in the log file.
378 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
379 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
380 reading and writing compressed and regular files and provides all the
381 hooks for compression support in BackupPC (should be supported in next
382 version). BackupPC::FileIO also does efficient writing of files that
383 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
384 helpful when smbclient reads a locked file, and it fills the tar
385 output with a file of the correct size but all 0x0. Such files will be
386 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
387 writes such files efficiently (as sparse files), meaning just a few
388 blocks of disk space will be needed even if the file is large.
390 * alive/dead counting for blackout now works correctly for DHCP hosts.
392 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
393 killed and restarted with backups running.
395 * added extra non blocking select() in BackupPC to make sure the socket
398 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
400 * Updated BackupPC_sendEmail to correctly parse the locked file
401 error from 2.2.1a smbclient, so that missing Outlook file emails
402 can be correctly sent.
404 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
405 hostname read from the hosts file.
407 * BackupPC_Admin provides general summary when the host name is empty.
409 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
411 * configure.pl complains if BackupPC is already running, reminding you
412 to stop it before upgrading.
414 * updated documentation, and fixed auto-insertion of config.pl into
415 BackupPC.pod (previously the last config parameter was left out of
418 #------------------------------------------------------------------------
419 # Version 1.01, 30 Sep 2001
420 #------------------------------------------------------------------------
422 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
424 * BackupPC_sendMail now reads the optional per-PC config file, allowing
425 email configuration parameters to be set on a per-PC basis.
427 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
429 #------------------------------------------------------------------------
430 # Version 1.00, 21 Sep 2001
431 #------------------------------------------------------------------------
433 * Initial release of BackupPC on sourceforge.net.