2 Release Notes for Bacula 1.37.2
4 Bacula code: Total files = 398 Total lines = 117,151 (*.h *.c *.in)
8 - Preliminary Python Event support has been added. See below for
10 A Python script will be called at particular points or conditions
11 in Bacula called Events. The currently defined Events are called:
13 StartJob, EndJob, NewVolume
15 Where StartJob is called before the RunBeforeJob, EndJob is called
16 after RunAfterJob, and NewVolume, is called before all other
17 "methods" of obtaining a new Volume name, when one is needed.
19 The Python script of the same name as the Event name (but with a .py)
20 is called from the Scripts Directory (a directive defined in the
21 Director resource). Note, both the Filename, and the name of
22 the function in the file must correspond to the Event name.
24 Once the Python script gets control, it can have access to Bacula
29 The script is called with one argument, typically called j. This
30 argument *must* be passed unchanged to each bacula function. The
31 format of the call is slightly different for reading Bacula
32 variable and for writing bacula variables. See below.
34 Bacula variables can be read with:
36 bacula.get(j, "Variable-name")
38 where j is the argument passed to the function, and Variable-name
39 is on of the following:
41 JobId, Client, Pool, Storage, Catalog, MediaType, NumVols, DirName,
42 Level, Type, Job, JobName, JobStatus
44 Bacula varibles can be set using Python keyword arguments:
46 bacula.set(jcr=j, VolumeName="xyz")
48 The two currently implemented writable "variables" are:
50 VolumeName and JobReport
52 It is possible to submit a Bacula run command with the following:
54 bacula.run(j, "run kernsave client=Matou storage=File")
56 this function returns the JobId of the job that was started. If
57 there is an error, the return value is zero.
65 jobid = bacula.get(j, "JobId")
66 client = bacula.get(j, "Client")
67 bacula.set(jcr=j, JobReport="EndJob output: JobId=%d Client=%s.\n" % (jobid, client))
69 startid = bacula.run(j, "run kernsave")
70 print "Python started jobid=", startid
75 == File NewVolume.py ===
79 jobid = bacula.get(j, "JobId")
81 client = bacula.get(j, "Client")
82 print "Client=" + client
83 numvol = bacula.get(j, "NumVols");
84 print "NumVols=", numvol
85 bacula.set(jcr=j, JobReport="New Volume set for Job.\n")
86 bacula.set(jcr=j, VolumeName="TestA-001")
89 - Part files support: File volumes can now be splitted in multiple
90 files, called "parts".
91 - DVD writing support, using parts, and a lot of new directives in
92 the Device resource of the Storage configuration file.
95 - Scripts Directory = <directory> name. Defines the directory from
96 which Bacula scripts will be called for events. In fact, Bacula
97 appends this name to the standard Python list of search directories,
98 so the script could also be in any of the Python system directories.
99 - In FileSet, you can exclude backing up of hardlinks (if you have
100 a lot, it can be very expensive), by using:
102 in the Options section. Patch supplied by David R Bosso. Thanks.
103 - MaximumPartSize = bytes (SD, Device resource)
104 Defines the maximum part size.
105 - Requires Mount = Yes/No (SD, Device resource)
106 Defines if the device require to be mounted to be read, and if it
107 must be written in a special way. If it set, the following directives
108 must be defined in the same Device resource:
109 + Mount Point = directory
110 Directory where the device must be mounted.
111 + Mount Command = name-string
112 Command that must be executed to mount the device. Before the command
113 is executed, %a is replaced with the Archive Device, and %m with the
115 + Unmount Command = name-string
116 Command that must be executed to unmount the device. Before the
117 command is executed, %a is replaced with the Archive Device, and
118 %m with the Mount Point.
119 + Write Part Command = name-string
120 Command that must be executed to write a part to the device. Before
121 the command is executed, %a is replaced with the Archive Device, %m
122 with the Mount Point, %n with the current part number (0-based),
123 and %v with the current part filename.
124 + Free Space Command = name-string
125 Command that must be executed to check how much free space is left
126 on the device. Before the command is executed, %a is replaced with
127 the Archive Device, %m with the Mount Point, %n with the current part
128 number (0-based), and %v with the current part filename.
129 - Write Part After Job = Yes/No (DIR, Job Resource, and Schedule Resource)
130 If this directive is set to yes (default no), a new part file will be
131 created after the job is finished.
134 - "python restart" restarts the Python interpreter. Rather brutal, make
135 sure no Python scripts are running. This permits you to change
136 a Python script and get Bacula to use the new script.
139 - You must add --with-python=[DIR] to the configure command line
140 if you want Python support. Python 2.2 and 2.3 should be automatically
141 detected if in the standard place.
142 - With Python 2.2 version, the link of the Director gets a few linker
143 warnings due to the fact that Python pulls in some old non-secure
145 - With Python 2.3, there are a few compiler warnings.
148 - 2 new scripts, dvd-writepart and dvd-freespace, in the scripts directory,
149 which are designed to be used as parameters to Write Part Command and
150 Free Space Command. They need the dvd+rw-tools to be installed
151 (http://fy.chalmers.se/~appro/linux/DVD+RW/).