1AMANDA-COMPATIBILIT(7) Miscellanea AMANDA-COMPATIBILIT(7)
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6 amanda-compatibility - Compatibility between Amanda versions
7
9 Amanda has used several on-the-wire protocols to communicate between
10 the server and backup clients, and not all of them have been
11 compatible.
12 Versions of Amanda prior to about 2.3 used a different protocol which
14 is not compatible. 2.3 is very old so this is not of general interest.
15 The Amanda 2.4 series all use the same protocol. This protocol has
17 support for extensibility. Generally upgrading clients or servers along
18 the 2.4 branch does not cause difficulty.
19 Amanda 2.5.0 uses the same protocol as 2.4. One can use a 2.5.0 server
21 with 2.4 clients and a 2.4 server with 2.5.0 clients.
22 Kerberos4 authentication in 2.5 is compatible with 2.4. In 2.5,
24 kerberos4 encryption is broken, at least for the server.
25 Amanda 2.5.1 introduced a new recover protocol. Backup communication
27 works with any combination of versions, but 2.5.1's amrecover cannot
28 communicate with an older server. Use oldamrecover on 2.5.1 and higher
29 clients when communicating with an older server.
30 Amanda 2.6.0 and later are completely compatible with 2.5.1.
32 To restore a dump created with the tapesplit_size option using
34 amrecover, you need at least a 2.5 server and late-2.4 client.
35 (Extracting that backup using only shell, mt and dd is also possible.)
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38 The recommended course for Amanda upgrades is to upgrade the server
39 first, and test backups and restores before upgrading clients. Consult
40 the changes described below for the relevant span of versions to
41 determine what adjustments, if any, are required. Also see the NEWS
42 file shipped with each Amanda release for more detailed information.
43 Amanda 3.2
45 The following configuration configration keywords are deprecated. This
46 is currently a warning, but will become an error soon.
47 • amrecover-do-fsf - amrecover always seeks to files when recovering
49 • amrecover-check-label - amrecover always checks the volume label
51 when recovering
52 • Dumptype parameters tape-splitsize, split-diskbuffer, and
54 fallback-splitsize - see allow-split and tapetype parameters
55 part-size, part-cache-type, part-cache-dir, and
56 part-cache-max-size. See amanda.conf(5) for more information on
57 these new parameters, noting particularly that all but the first
58 are tapetype parameters, not dumptype parameters.
59 To convert most cases to the new parameters, set part-size to the
61 old value of tape-splitsize and part-cache-dir to the old value of
62 split-diskbuffer, if present. If split-diskbuffer was set, then set
63 part-cache-type to disk, otherwise memory. Finally, if using memory
64 caching, set part-cache-max-size to the previous value of
65 fallback-splitsize. Be sure to remove all of the old keywords from
66 your configuration.
67 Amanda 3.1
70 Although it is a significant rewrite, there are no incompatible changes
71 in this release.
72 Old-style changer scripts are deprecated in this release. While they
74 remain available, they may be removed in a future release. Consider
75 upgrading to one of the new changer scripts. Users of chg-zd-mtx are
76 particularly encouraged to consider the much more intelligent
77 chg-robot. See amanda-changers(7) for more information.
78 The following configuration configration keywords are deprecated. This
80 is currently a warning, but will become an error in a future version.
81 • label_new_tapes - use autolabel
83 Amanda 2.6.1
86 There are no incompatible changes in this release, but consider
87 switching to some of the new applications instead of the old GNUTAR and
88 DUMP programs.
89 The following configuration configration keywords are deprecated. This
91 is currently a warning, but will become an error soon.
92 • tapebufs - use device-output-buffer-size instead
94 • rawtapedev - use tapedev instead
96 • file-pad - this is no longer optional, and all files are padded
98 Amanda 2.6.0
101 amverify and amverifyrun are removed and replaced with amcheckdump(8).
102 Both amdd and ammt are removed.
103 Some Amanda files are now installed in new amanda/ subdirectories:
105 libraries are now installed in $libdir/amanda and internal programs are
106 now installed in $libexecdir/amanda.
107 The amandates file, previously at /etc/amandates, is now at
109 $localstatedir/amanda/amandates. You may want to move your existing
110 /etc/amandates when you upgrade Amanda.
111 GLib is now required to build and run Amanda.
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115 amanda(8), amanda.conf(5)
116 The Amanda Wiki: : http://wiki.zmanda.com/
118
120 Dustin J. Mitchell <dustin@zmanda.com>
121 Zmanda, Inc. (http://www.zmanda.com)
122Amanda 3.5.4 07/27/2023 AMANDA-COMPATIBILIT(7)