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- Amanda Upgrade Issues
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- Amanda 2.4.0 has introduced a major incompatibility in the Amanda
- protocol. This means that pre-2.4.0 clients won't interoperate with a
- 2.4.0 server, nor will 2.4.0 clients interoperate with pre-2.4.0
- servers. You have to upgrade them all at the same time.
-
- To ease the upgrade process Amanda has, from release 2.4.0 on, a
- configure flag (--with-testing) that will cause Amanda to use alternate
- service names (amanda-test) instead of the standard ones. This allows
- you to keep using your old version of Amanda while you test the new one.
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- Depending upon the version of Amanda you are upgrading from, Amanda may
- use a different database library to store the backup information, and
- the new Amanda may not be able to read the old Amanda database files.
- In this case, you will want to do something like the following:
-
- Before the upgrade (using the old version of amadmin):
-
- # cd /var/amanda/CONFIG
- # amadmin CONFIG export > zzz
- # mkdir backup
- # mv curinfo* backup
-
- and after the upgrade (using the new version of amadmin):
-
- # cd /var/amanda/CONFIG
- # amadmin CONFIG import < zzz
-
- and a month (:-) after you are happy with the new version:
-
- # cd /var/amanda/CONFIG
- # rm -rf backup
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- After 2.4.0, the structure of the directory holding the index files
- was changed to have three levels instead of being flat. This greatly
- reduces the number of files in a given directory, which was a problem
- for some systems.
-
- The new layout is:
-
- [indexdir]/hostname/filesystem/YYYYMMDD_L.gz
-
- where hostname and filesystem are "sanitized" versions of the names from
- disklist, i.e. '/' characters are converted to '_' and so on. This new
- naming convention matches the one used for the text formatted database.
-
- A script is available to convert the flat directory structure to the
- new layout:
-
- http://www.cs.umd.edu/projects/amanda/amanda-users/users/Apr-Jun.1998/msg00428.html
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