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 1.5.0, released 2 Aug 2002.
16 # See http://backuppc.sourceforge.net.
18 #========================================================================
20 #------------------------------------------------------------------------
21 # Version 1.5.0, 2 Aug 2002
22 #------------------------------------------------------------------------
24 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
25 option instead of --newer-mtime. Also removed --atime-preserve from
26 $Conf{TarClientCmd}. This makes the default settings work better
29 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
30 so it can correctly warn the user to stop it before upgrading. Reported
33 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
34 Reported by Guillaume Filion.
36 * Added LDAP setup to documentation from David Holland.
38 * Tar.pm now adds a "." to file paths that start with "/", so that all
39 tar paths are relative. From Ludovic Drolez.
41 #------------------------------------------------------------------------
42 # Version 1.5.0beta0, 30 Jun 2002
43 #------------------------------------------------------------------------
45 * A full set of restore options is now supported, including direct
46 restore via smbclient or tar or downloading a zip or tar file.
48 * Major additions to CGI script to support better directory navigation,
49 restore features and mod_perl. Also, file downloads from the CGI
50 interface now correctly preserve the file name and provide the
51 correct Content-Type for the most common types of files. Improved
52 directory navigation was contributed by Ryan Kucera.
54 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
55 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
56 create a zip archive of any portion of a backup.
58 * Substantial additions to BackupPC_tarCreate to support restore,
59 including modifying path names, handling hardlinks, fixing
60 support of old backups without attributes (pre-v1.4.0). Plus
61 BackupPC_tarCreate is now an offical part of the release.
62 (Lack of support for hardlinks was reported by John Stanley.)
64 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
67 * A unix domain socket is now used for communication between the CGI
68 interface and BackupPC. The original TCP socket is optional. Sockets
69 are correctly re-initialized if config.pl is updated with new socket
72 * For improved security messages over the unix or TCP socket are protected
73 via an MD5 digest based on a shared secret, a sequence number, a time
74 stamp and a unique per-connection number.
76 * Additions to configure.pl to support install of directory navigation
79 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
80 were set to a single string or list (in v1.4.0 only the case of
81 hash worked correctly). Reported by Phillip Bertolus.
83 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
84 client always subject to blackout, matching the comments in config.pl.
85 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
86 reported by Pascal Schelcher.
88 * Fixed byte and file totals for tar backups, reported by several users.
90 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
91 suggested by Erminio Baranzini.
93 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
94 well as shell escaping of tar arguments.
96 * Fixed entity encoding of 8-bit characters in the CGI interface.
98 * Added optional CGI headers in $Conf{CgiHeaders} that by default
99 is set to a no-cache pragma. Suggested by Benno Zuure.
101 #------------------------------------------------------------------------
102 # Version 1.4.0, 16 Mar 2002
103 #------------------------------------------------------------------------
105 * BackupPC now supports tar (in addition to smb) for extracting host
106 data. This is the most convenient option for linux/unix hosts.
107 Tar can be configured to run over ssh, rsh or to backup a local
108 nfs mount from the host.
110 * Support for special files, including symbolic links, fifo, character
111 and block device files has been added, so that all native linux/unix
112 file types can be correctly backed up when using tar transport.
113 Special files are all stored as regular files and the type attributes
114 are used to remember the original file type.
116 * All unix file attributes are now saved (and pooled when possible).
117 This includes user and group ownership, permissions, and modification
118 time. Smbclient also does a reasonable job of emulating unix
119 permissions (such as mtime), and these attributes get saved too.
121 * The new default is to not fill incremental dumps. configure.pl
122 automatically sets $Conf{IncrFill} to 0. The default was 1
123 (incrementals were filled with hardlinks). Since the CGI
124 script does filling at browsing time, there is no need to
125 fill incremental dumps.
127 * Backup file names are now stored in "mangled" form. Each node of a
128 path is preceded by "f", and special characters (\n, \r, % and /) are
129 URI-encoded as "%xx", where xx is the ascii character's hex value. So
130 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
131 was done mainly so meta-data could be stored alongside the backup
132 files without name collisions. In particular, the attributes for the
133 files in a directory are stored in a file called "attrib", and
134 mangling avoids file name collisions (I discarded the idea of having
135 a duplicate directory tree for every backup just to store the
136 attributes). Other meta-data (eg: rsync checksums) could be stored in
137 file names preceded by, eg, "c". There are two other benefits to
138 mangling: the share name might contain "/" (eg: "/home/craig" for tar
139 transport), and I wanted that represented as a single level in the
140 storage tree. Secondly, as files are written to NewFileList for later
141 processing by BackupPC_link, embedded newlines in the file's path
142 will cause problems which are avoided by mangling.
144 The CGI script undoes the mangling, so it is invisibe to the user.
145 Of course, old (unmangled) backups are still supported by the CGI
148 * Various changes to the CGI interface, BackupPC_Admin:
150 + Added button that allows users to manually start a full dump in
151 addition to the existing incremental dump.
153 + Added display of file attributes when browsing backups.
155 + Added an optional holdoff time specified by the user when canceling
156 a backup. BackupPC will not attempt any new backups for at least the
157 specified time. This holdoff time can be changed whether or not a
160 + Added supports for file mangling, and correct merging of unfilled
161 backups from mangled or unmangled (and compressed or uncompressed)
162 fulls when browsing or restoring.
164 + Only displays a "Start Incr Backup" button if there are already some
167 + For DHCP hosts, when a user tries to manually start a backup, add
168 a check for the netbios name of both the host the request came
169 from (REMOTE_ADDR) and the last known DHCP address for that host
170 to see if either address matches the host. If not, an error
171 message is display. The previous behavior was that only requests
172 from the client itself succeeded, and requests from other machines
175 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
176 is 1.4.0. The first digit is for major new releases, the middle digit
177 is for significant feature releases and improvements, and the last
178 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
179 and 1.03 as 1.0.0, ..., 1.3.0.
181 * BackupPC and the CGI script BackupPC_Admin now check that the effective
182 user id is correct to avoid accidentally launching BackupPC as the
183 wrong user or detecting CGI configuration problems. This behavior
184 can be turned off using the $Conf{BackupPCUserVerify} option.
186 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
187 support generic names for both smb and tar transport methods. The
188 CGI script checks for old names for backward compatibility.
190 * Major changed to Backup_dump to support new tar transport. All transport
191 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
194 * Added workaround for a bug in Samba's smbclient for files between 2GB
195 and 4GB. The file size in the tar header is incorrect. This allows
196 files up to 4GB to work with smbclient, rather than 2GB. To support
197 files larger than 2GB you must make sure perl is compiled with the
198 uselargefiles option (use "perl -V | egrep largefiles" to check) and
199 the pool directory must be on a file system that supports large files.
201 * Moved the pool writing code into a module BackupPC::PoolWrite. This
202 allows the clever file pool checking (digest, uncompressing, comparing
203 etc with minimum disk IO) to be used easily in multiple places (eg: it
204 is now used for writing attribute files so they can be pooled).
206 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
208 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
209 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
210 on one user's machine was world writable and perl -T correctly
213 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
214 Thanks to Kyle Amon for sending the fix. Decided to move the
215 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
216 now configure.pl tries to come up with a sensible default based on
219 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
220 share name (eg: C$). Thanks to Jules Agee for this fix. Also
221 changed the default config.pl so that single quotes are used
222 everywhere so that people don't get tripped up putting '$' inside
223 double-quoted strings.
225 #------------------------------------------------------------------------
226 # Version 1.03, 9 Dec 2001
227 #------------------------------------------------------------------------
229 * BackupPC now has full support for compression. There are now two
230 pool areas, the original pool for uncompressed files, and cpool for
231 compressed files. The compression is done by Compress::Zlib.
232 Compression reduces the pool disk usage by around 40%, although your
233 mileage may vary. Compression is optional and can also be specified on
234 a per-PC basis (although this will cost more pool storage since many
235 backup files will have to be stored in both compressed and
238 * A new script, BackupPC_compressPool, can be run to compress the entire
239 pool. This is used once to migrate all the pool data from uncompressed
240 to compressed on existing installations. Read the documentation
241 (Installing BackupPC/Compressing an existing pool) before running
242 BackupPC_compressPool!
244 Alternatively, compression can simply be turned on and all new backups
245 will be compressed. Both old (uncompressed) and new (compressed)
246 backups can be browsed and viewed. Eventually, the old backups will
247 expire and all the pool data will be compressed. However, until the
248 old backups expire, this approach could require 60% or more additional
249 pool storage space to store both uncompressed and compressed versions
252 * Significant improvements to the cgi interface, BackupPC_Admin:
254 - much better layout navigation
255 - handles compressed backup files and compressed log files
256 - handles unfilled incremental dumps
257 - better backup directory browsing navigation
258 - reports compression statistics
259 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
260 - Additional customization with $Conf{CgiHeaderFontType},
261 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
262 $Conf{CgiHeaderBgColor}.
264 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
265 file and queues the PCs itself. Like config.pl, BackupPC will
266 re-read the hosts file on each wakeup if its modification time
267 changes, or upon a SIGHUP. This also makes for better behavior
268 when adding a host: if you add hosts, simply send a SIGHUP to
269 BackupPC or wait for the next wakeup.
271 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
273 * BackupPC_dump keeps track of compressed file sizes so that compression
274 statistics can be reported by the cgi interface.
276 * Aging of old log files now handles compressed log files (.z extension).
278 * Added configuration option $Conf{IncrFill} to specify whether
279 incremental dumps should be filled in. Old behavior was that
280 filling was on. Now it's optional. See config.pl for more
283 * BackupPC_nightly now cleans and generates statistics for both
284 the uncompressed pool and compressed pool (cpool).
286 * Added new utility script BackupPC_zcat that can be used to
287 uncompresses BackupPC files.
289 * configure.pl offers various options related to compression,
290 depending upon whether this is a new install or upgrade,
291 and whether or not Compress::Zlib is installed.
293 * configure.pl now makes a backup copy of config.pl before
294 config.pl is updated.
296 * added three new fields to the backups file to handle optional
297 filling and compression stats.
299 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
300 on each dhcp host once each night to verify that very old backups are
301 expired. This ensures that very old backups are expired even if
302 the dhcp host has not been on the network for a long time.
304 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
305 even if compression was off. Thanks to Steve Holmes for reporting
308 * fixed bug that caused a BackupPC queue to get blocked when a backup
309 cancel attempt was made during the BackupPC_link phase.
311 #------------------------------------------------------------------------
312 # Version 1.02, 28 Oct 2001.
313 #------------------------------------------------------------------------
315 * Added new script BackupPC_tarExtract to extract the smbclient tar
316 archive. This reduces disk writes by perhaps 90-95% and disk reads by
317 50%. Previously, tar was used to extract and write everything to disk.
318 Then BackupPC_dump would read enough of each file to compute the MD5
319 digest, and then compare the full file with candidate pool files. So
320 for each 1MB file that matches a single file in the pool, there would
321 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
323 BackupPC_tarExtract instead extracts the archive using a 1MB memory
324 buffer. This allows the MD5 digest to be computed without touching the
325 disk. Next, any potential pool file compares are done by comparing the
326 pool file against the incoming tar data in memory, which only requires
327 the pool file to be read. So for each 1MB file that matches a single
328 file in the pool, there are now no disk writes, and only 1MB of reads.
329 BackupPC_tarExtract handles arbitrary size files and repeated
330 potential pool matches. If the incoming file doesn't match the pool
331 then it is written to disk (once the pool is mature this happens maybe
334 * Substantial changes to BackupPC_dump:
336 + BackupPC_tarExtract is now used in place of tar.
338 + BackupPC_dump now reads the output from both smbclient and
339 BackupPC_tarExtract and merges them into SmbLOG.
341 + Named pipes are no longer used to connect smbclient to tar
342 (now BackupPC_tarExtract). Regular pipes are used instead.
343 This avoids the need to system mknod or mkfifo.
345 + Locked files on the client that can't be read by smbclient
346 previously were filled with 0x0 bytes by smbclient, meaning
347 tar extracted a useless file filled with 0x0 bytes. Now,
348 BackupPC_dump watches the output of smbclient and removes
349 any files that smbclient couldn't read. This avoids storing
350 useless files. It tries to replace such files with a hard link
351 to a previous dump. These actions appear in the log file.
353 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
354 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
355 reading and writing compressed and regular files and provides all the
356 hooks for compression support in BackupPC (should be supported in next
357 version). BackupPC::FileIO also does efficient writing of files that
358 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
359 helpful when smbclient reads a locked file, and it fills the tar
360 output with a file of the correct size but all 0x0. Such files will be
361 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
362 writes such files efficiently (as sparse files), meaning just a few
363 blocks of disk space will be needed even if the file is large.
365 * alive/dead counting for blackout now works correctly for DHCP hosts.
367 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
368 killed and restarted with backups running.
370 * added extra non blocking select() in BackupPC to make sure the socket
373 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
375 * Updated BackupPC_sendEmail to correctly parse the locked file
376 error from 2.2.1a smbclient, so that missing Outlook file emails
377 can be correctly sent.
379 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
380 hostname read from the hosts file.
382 * BackupPC_Admin provides general summary when the host name is empty.
384 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
386 * configure.pl complains if BackupPC is already running, reminding you
387 to stop it before upgrading.
389 * updated documentation, and fixed auto-insertion of config.pl into
390 BackupPC.pod (previously the last config parameter was left out of
393 #------------------------------------------------------------------------
394 # Version 1.01, 30 Sep 2001
395 #------------------------------------------------------------------------
397 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
399 * BackupPC_sendMail now reads the optional per-PC config file, allowing
400 email configuration parameters to be set on a per-PC basis.
402 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
404 #------------------------------------------------------------------------
405 # Version 1.00, 21 Sep 2001
406 #------------------------------------------------------------------------
408 * Initial release of BackupPC on sourceforge.net.