[Bug 1003854] Re: Database upgrade/migration fails with nested db directories (lucid to precise)

[Paul Bergene]

This problem seems to still exist.  
I encountered it this week when upgrading from 10.4 to 12.04.3.

The changes above work, but since I had a half-installed slapd package
changing /var/lib/dpkg/info/slapd.config was what did the trick.

The scripts that I got from apt were still the old broken version.

** Description changed:

  Hi,
  
  I've just performed an upgrade of our LDAP server on Ubuntu 10.04.4 LTS
  to Ubuntu 12.04 (I acknowledge this upgrade path is not officially
  supported yet).
  
  The incompatible database upgrading process in the preinst/postinst
  files failed in the following scenario.
  
  We have two suffixes/databases at the following paths:-
  
-  * /var/lib/ldap
-  * /var/lib/ldap/accesslog
+  * /var/lib/ldap
+  * /var/lib/ldap/accesslog
  
  The preinst database dumping part of the process worked just fine and
  created the appropriate LDIF files under
  /var/backup/slapd-2.4.21-0ubuntu5.7, however the restore failed
  stating:-
  
  """
-   Loading from /var/backups/slapd-2.4.21-0ubuntu5.7: 
-   - directory dc=REDACTEDs,dc=co,dc=uk... failed.
+   Loading from /var/backups/slapd-2.4.21-0ubuntu5.7:
+   - directory dc=REDACTEDs,dc=co,dc=uk... failed.
  
  Loading the database from the LDIF dump failed with the following
  error while running slapadd:
-     4fbdfebf olcDbDirectory: value #0: invalid path: No such file or directory
-     4fbdfebf config error processing olcDatabase={2}hdb,cn=config: olcDbDirectory: value #0: invalid path: No such file or directory
-     slapadd: bad configuration directory!
+     4fbdfebf olcDbDirectory: value #0: invalid path: No such file or directory
+     4fbdfebf config error processing olcDatabase={2}hdb,cn=config: olcDbDirectory: value #0: invalid path: No such file or directory
+     slapadd: bad configuration directory!
  """
  
  This is because when move_incompatible_databases_away() runs it finds
  the main database first (/var/lib/ldap) and moves all top level entries
  (find -mindepth 1 -maxdepth 1 ...) into the backup directory and this
  includes the accesslog subdirectory which then no longer exists. When
  slapadd runs it checks config specifying that directory and bails with
  the above error given it is indeed missing.
  
  I've tested a tentative fix and that's to patch the two find commands
  (one in is_empty_dir() one in move_old_database_away to also specify
  -type f so that the directory structure is preserved when moving the old
  database away (accesslog will be backed up separately when its suffx is
  iterated over in move_incompatible_databases_away()).
  
  The simple and very tentative patch for this is:-
  
  """
  # diff -u slapd.scripts-common.old slapd.scripts-common
  --- slapd.scripts-common.old	2012-05-24 10:33:01.746206585 +0100
  +++ slapd.scripts-common	2012-05-24 10:33:23.967902747 +0100
  @@ -391,7 +391,7 @@
-  		echo -n "  - directory $suffix... " >&2
-  		mkdir -p "$backupdir"
-  		find "$databasedir" -mindepth 1 -maxdepth 1	\
+    echo -n "  - directory $suffix... " >&2
+    mkdir -p "$backupdir"
+    find "$databasedir" -mindepth 1 -maxdepth 1	\
  -			-exec mv {} "$backupdir" \;
  +			-type f -exec mv {} "$backupdir" \;
-  		echo done. >&2
-  	else
-  		cat >&2 <<EOF
+    echo done. >&2
+   else
+    cat >&2 <<EOF
  @@ -728,7 +728,7 @@
-  # (i.e., contains no files except for an optional DB_CONFIG).
-  # Usage: if is_empty_dir "$dir"; then ... fi
-  
+  # (i.e., contains no files except for an optional DB_CONFIG).
+  # Usage: if is_empty_dir "$dir"; then ... fi
+ 
  -	output=`find "$1" -mindepth 1 -maxdepth 1 \! -name DB_CONFIG 2>/dev/null`
  +	output=`find "$1" -mindepth 1 -maxdepth 1 -type f \! -name DB_CONFIG 2>/dev/null`
-  	if [ -n "$output" ]; then
-      		return 1
-  	else
+   if [ -n "$output" ]; then
+        return 1
+   else
  """

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Title:
  Database upgrade/migration fails with nested db directories (lucid to
  precise)

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