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
33 * Added optional user-defined pre/post dump/restore commands, allowing
34 things like database shutdown/startup for dumps.
36 * Replaced $Conf{PingArgs} with $Conf{PingCmd}, added $Conf{DfCmd},
37 $Conf{NmbLookupCmd} allowing all these commands to be fully
38 configured. Also, all commands (except smbclient) can also
39 now be fragments of perl code.
41 * Added new BackupPC::View module that creates views of backups
42 (handling merging etc). Updated BackupPC_Admin, BackupPC_zipCreate
43 and BackupPC_tarCreate to use BackupPC::View. This removes lots
44 of merging and mangling code from the higher-level code.
46 * Added patch from Toby Johnson that allows additional users to be
47 specified in the hosts file; these users can also view/start/stop
48 and restore backups for that host. Also added a new config
49 setting $Conf{CgiNavBarAdminAllHosts} that allows all hosts to
50 be listed in the left nav bar for admins.
52 * Added "PerlTaintCheck On" to the mod_perl section in the docs,
53 suggested by Tim Demarest.
55 #------------------------------------------------------------------------
56 # Version 1.5.0, 2 Aug 2002
57 #------------------------------------------------------------------------
59 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
60 option instead of --newer-mtime. Also removed --atime-preserve from
61 $Conf{TarClientCmd}. This makes the default settings work better
64 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
65 so it can correctly warn the user to stop it before upgrading. Reported
68 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
69 Reported by Guillaume Filion.
71 * Added LDAP setup to documentation from David Holland.
73 * Tar.pm now adds a "." to file paths that start with "/", so that all
74 tar paths are relative. From Ludovic Drolez.
76 #------------------------------------------------------------------------
77 # Version 1.5.0beta0, 30 Jun 2002
78 #------------------------------------------------------------------------
80 * A full set of restore options is now supported, including direct
81 restore via smbclient or tar or downloading a zip or tar file.
83 * Major additions to CGI script to support better directory navigation,
84 restore features and mod_perl. Also, file downloads from the CGI
85 interface now correctly preserve the file name and provide the
86 correct Content-Type for the most common types of files. Improved
87 directory navigation was contributed by Ryan Kucera.
89 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
90 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
91 create a zip archive of any portion of a backup.
93 * Substantial additions to BackupPC_tarCreate to support restore,
94 including modifying path names, handling hardlinks, fixing
95 support of old backups without attributes (pre-v1.4.0). Plus
96 BackupPC_tarCreate is now an offical part of the release.
97 (Lack of support for hardlinks was reported by John Stanley.)
99 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
102 * A unix domain socket is now used for communication between the CGI
103 interface and BackupPC. The original TCP socket is optional. Sockets
104 are correctly re-initialized if config.pl is updated with new socket
107 * For improved security messages over the unix or TCP socket are protected
108 via an MD5 digest based on a shared secret, a sequence number, a time
109 stamp and a unique per-connection number.
111 * Additions to configure.pl to support install of directory navigation
114 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
115 were set to a single string or list (in v1.4.0 only the case of
116 hash worked correctly). Reported by Phillip Bertolus.
118 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
119 client always subject to blackout, matching the comments in config.pl.
120 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
121 reported by Pascal Schelcher.
123 * Fixed byte and file totals for tar backups, reported by several users.
125 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
126 suggested by Erminio Baranzini.
128 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
129 well as shell escaping of tar arguments.
131 * Fixed entity encoding of 8-bit characters in the CGI interface.
133 * Added optional CGI headers in $Conf{CgiHeaders} that by default
134 is set to a no-cache pragma. Suggested by Benno Zuure.
136 #------------------------------------------------------------------------
137 # Version 1.4.0, 16 Mar 2002
138 #------------------------------------------------------------------------
140 * BackupPC now supports tar (in addition to smb) for extracting host
141 data. This is the most convenient option for linux/unix hosts.
142 Tar can be configured to run over ssh, rsh or to backup a local
143 nfs mount from the host.
145 * Support for special files, including symbolic links, fifo, character
146 and block device files has been added, so that all native linux/unix
147 file types can be correctly backed up when using tar transport.
148 Special files are all stored as regular files and the type attributes
149 are used to remember the original file type.
151 * All unix file attributes are now saved (and pooled when possible).
152 This includes user and group ownership, permissions, and modification
153 time. Smbclient also does a reasonable job of emulating unix
154 permissions (such as mtime), and these attributes get saved too.
156 * The new default is to not fill incremental dumps. configure.pl
157 automatically sets $Conf{IncrFill} to 0. The default was 1
158 (incrementals were filled with hardlinks). Since the CGI
159 script does filling at browsing time, there is no need to
160 fill incremental dumps.
162 * Backup file names are now stored in "mangled" form. Each node of a
163 path is preceded by "f", and special characters (\n, \r, % and /) are
164 URI-encoded as "%xx", where xx is the ascii character's hex value. So
165 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
166 was done mainly so meta-data could be stored alongside the backup
167 files without name collisions. In particular, the attributes for the
168 files in a directory are stored in a file called "attrib", and
169 mangling avoids file name collisions (I discarded the idea of having
170 a duplicate directory tree for every backup just to store the
171 attributes). Other meta-data (eg: rsync checksums) could be stored in
172 file names preceded by, eg, "c". There are two other benefits to
173 mangling: the share name might contain "/" (eg: "/home/craig" for tar
174 transport), and I wanted that represented as a single level in the
175 storage tree. Secondly, as files are written to NewFileList for later
176 processing by BackupPC_link, embedded newlines in the file's path
177 will cause problems which are avoided by mangling.
179 The CGI script undoes the mangling, so it is invisibe to the user.
180 Of course, old (unmangled) backups are still supported by the CGI
183 * Various changes to the CGI interface, BackupPC_Admin:
185 + Added button that allows users to manually start a full dump in
186 addition to the existing incremental dump.
188 + Added display of file attributes when browsing backups.
190 + Added an optional holdoff time specified by the user when canceling
191 a backup. BackupPC will not attempt any new backups for at least the
192 specified time. This holdoff time can be changed whether or not a
195 + Added supports for file mangling, and correct merging of unfilled
196 backups from mangled or unmangled (and compressed or uncompressed)
197 fulls when browsing or restoring.
199 + Only displays a "Start Incr Backup" button if there are already some
202 + For DHCP hosts, when a user tries to manually start a backup, add
203 a check for the netbios name of both the host the request came
204 from (REMOTE_ADDR) and the last known DHCP address for that host
205 to see if either address matches the host. If not, an error
206 message is display. The previous behavior was that only requests
207 from the client itself succeeded, and requests from other machines
210 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
211 is 1.4.0. The first digit is for major new releases, the middle digit
212 is for significant feature releases and improvements, and the last
213 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
214 and 1.03 as 1.0.0, ..., 1.3.0.
216 * BackupPC and the CGI script BackupPC_Admin now check that the effective
217 user id is correct to avoid accidentally launching BackupPC as the
218 wrong user or detecting CGI configuration problems. This behavior
219 can be turned off using the $Conf{BackupPCUserVerify} option.
221 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
222 support generic names for both smb and tar transport methods. The
223 CGI script checks for old names for backward compatibility.
225 * Major changed to Backup_dump to support new tar transport. All transport
226 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
229 * Added workaround for a bug in Samba's smbclient for files between 2GB
230 and 4GB. The file size in the tar header is incorrect. This allows
231 files up to 4GB to work with smbclient, rather than 2GB. To support
232 files larger than 2GB you must make sure perl is compiled with the
233 uselargefiles option (use "perl -V | egrep largefiles" to check) and
234 the pool directory must be on a file system that supports large files.
236 * Moved the pool writing code into a module BackupPC::PoolWrite. This
237 allows the clever file pool checking (digest, uncompressing, comparing
238 etc with minimum disk IO) to be used easily in multiple places (eg: it
239 is now used for writing attribute files so they can be pooled).
241 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
243 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
244 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
245 on one user's machine was world writable and perl -T correctly
248 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
249 Thanks to Kyle Amon for sending the fix. Decided to move the
250 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
251 now configure.pl tries to come up with a sensible default based on
254 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
255 share name (eg: C$). Thanks to Jules Agee for this fix. Also
256 changed the default config.pl so that single quotes are used
257 everywhere so that people don't get tripped up putting '$' inside
258 double-quoted strings.
260 #------------------------------------------------------------------------
261 # Version 1.03, 9 Dec 2001
262 #------------------------------------------------------------------------
264 * BackupPC now has full support for compression. There are now two
265 pool areas, the original pool for uncompressed files, and cpool for
266 compressed files. The compression is done by Compress::Zlib.
267 Compression reduces the pool disk usage by around 40%, although your
268 mileage may vary. Compression is optional and can also be specified on
269 a per-PC basis (although this will cost more pool storage since many
270 backup files will have to be stored in both compressed and
273 * A new script, BackupPC_compressPool, can be run to compress the entire
274 pool. This is used once to migrate all the pool data from uncompressed
275 to compressed on existing installations. Read the documentation
276 (Installing BackupPC/Compressing an existing pool) before running
277 BackupPC_compressPool!
279 Alternatively, compression can simply be turned on and all new backups
280 will be compressed. Both old (uncompressed) and new (compressed)
281 backups can be browsed and viewed. Eventually, the old backups will
282 expire and all the pool data will be compressed. However, until the
283 old backups expire, this approach could require 60% or more additional
284 pool storage space to store both uncompressed and compressed versions
287 * Significant improvements to the cgi interface, BackupPC_Admin:
289 - much better layout navigation
290 - handles compressed backup files and compressed log files
291 - handles unfilled incremental dumps
292 - better backup directory browsing navigation
293 - reports compression statistics
294 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
295 - Additional customization with $Conf{CgiHeaderFontType},
296 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
297 $Conf{CgiHeaderBgColor}.
299 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
300 file and queues the PCs itself. Like config.pl, BackupPC will
301 re-read the hosts file on each wakeup if its modification time
302 changes, or upon a SIGHUP. This also makes for better behavior
303 when adding a host: if you add hosts, simply send a SIGHUP to
304 BackupPC or wait for the next wakeup.
306 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
308 * BackupPC_dump keeps track of compressed file sizes so that compression
309 statistics can be reported by the cgi interface.
311 * Aging of old log files now handles compressed log files (.z extension).
313 * Added configuration option $Conf{IncrFill} to specify whether
314 incremental dumps should be filled in. Old behavior was that
315 filling was on. Now it's optional. See config.pl for more
318 * BackupPC_nightly now cleans and generates statistics for both
319 the uncompressed pool and compressed pool (cpool).
321 * Added new utility script BackupPC_zcat that can be used to
322 uncompresses BackupPC files.
324 * configure.pl offers various options related to compression,
325 depending upon whether this is a new install or upgrade,
326 and whether or not Compress::Zlib is installed.
328 * configure.pl now makes a backup copy of config.pl before
329 config.pl is updated.
331 * added three new fields to the backups file to handle optional
332 filling and compression stats.
334 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
335 on each dhcp host once each night to verify that very old backups are
336 expired. This ensures that very old backups are expired even if
337 the dhcp host has not been on the network for a long time.
339 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
340 even if compression was off. Thanks to Steve Holmes for reporting
343 * fixed bug that caused a BackupPC queue to get blocked when a backup
344 cancel attempt was made during the BackupPC_link phase.
346 #------------------------------------------------------------------------
347 # Version 1.02, 28 Oct 2001.
348 #------------------------------------------------------------------------
350 * Added new script BackupPC_tarExtract to extract the smbclient tar
351 archive. This reduces disk writes by perhaps 90-95% and disk reads by
352 50%. Previously, tar was used to extract and write everything to disk.
353 Then BackupPC_dump would read enough of each file to compute the MD5
354 digest, and then compare the full file with candidate pool files. So
355 for each 1MB file that matches a single file in the pool, there would
356 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
358 BackupPC_tarExtract instead extracts the archive using a 1MB memory
359 buffer. This allows the MD5 digest to be computed without touching the
360 disk. Next, any potential pool file compares are done by comparing the
361 pool file against the incoming tar data in memory, which only requires
362 the pool file to be read. So for each 1MB file that matches a single
363 file in the pool, there are now no disk writes, and only 1MB of reads.
364 BackupPC_tarExtract handles arbitrary size files and repeated
365 potential pool matches. If the incoming file doesn't match the pool
366 then it is written to disk (once the pool is mature this happens maybe
369 * Substantial changes to BackupPC_dump:
371 + BackupPC_tarExtract is now used in place of tar.
373 + BackupPC_dump now reads the output from both smbclient and
374 BackupPC_tarExtract and merges them into SmbLOG.
376 + Named pipes are no longer used to connect smbclient to tar
377 (now BackupPC_tarExtract). Regular pipes are used instead.
378 This avoids the need to system mknod or mkfifo.
380 + Locked files on the client that can't be read by smbclient
381 previously were filled with 0x0 bytes by smbclient, meaning
382 tar extracted a useless file filled with 0x0 bytes. Now,
383 BackupPC_dump watches the output of smbclient and removes
384 any files that smbclient couldn't read. This avoids storing
385 useless files. It tries to replace such files with a hard link
386 to a previous dump. These actions appear in the log file.
388 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
389 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
390 reading and writing compressed and regular files and provides all the
391 hooks for compression support in BackupPC (should be supported in next
392 version). BackupPC::FileIO also does efficient writing of files that
393 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
394 helpful when smbclient reads a locked file, and it fills the tar
395 output with a file of the correct size but all 0x0. Such files will be
396 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
397 writes such files efficiently (as sparse files), meaning just a few
398 blocks of disk space will be needed even if the file is large.
400 * alive/dead counting for blackout now works correctly for DHCP hosts.
402 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
403 killed and restarted with backups running.
405 * added extra non blocking select() in BackupPC to make sure the socket
408 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
410 * Updated BackupPC_sendEmail to correctly parse the locked file
411 error from 2.2.1a smbclient, so that missing Outlook file emails
412 can be correctly sent.
414 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
415 hostname read from the hosts file.
417 * BackupPC_Admin provides general summary when the host name is empty.
419 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
421 * configure.pl complains if BackupPC is already running, reminding you
422 to stop it before upgrading.
424 * updated documentation, and fixed auto-insertion of config.pl into
425 BackupPC.pod (previously the last config parameter was left out of
428 #------------------------------------------------------------------------
429 # Version 1.01, 30 Sep 2001
430 #------------------------------------------------------------------------
432 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
434 * BackupPC_sendMail now reads the optional per-PC config file, allowing
435 email configuration parameters to be set on a per-PC basis.
437 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
439 #------------------------------------------------------------------------
440 # Version 1.00, 21 Sep 2001
441 #------------------------------------------------------------------------
443 * Initial release of BackupPC on sourceforge.net.