X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/b45411f988e23b4ea475a08cd3d74e047a68bd19..301fd7f7e8d97755849e26427c12eed070f21b5f:/docs/admin/Faq.md

diff --git a/docs/admin/Faq.md b/docs/admin/Faq.md
index 126d7977..6203959d 100644
--- a/docs/admin/Faq.md
+++ b/docs/admin/Faq.md
@@ -22,6 +22,21 @@ then you can resume with the following command:
 If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
 
 
+### PostgreSQL crashed "invalid page in block"
+
+Usually serious problem, can be a hardware issue, not all data written to disc
+for example. Check PostgreSQL log file and search PostgreSQL issues/mailing
+list for hints.
+
+If it happened during index creation you can try rerunning the step with
+
+```sh
+./utils/setup.php --create-search-indices --ignore-errors
+```
+
+Otherwise it's best to start the full setup from the beginning.
+
+
 ### PHP "open_basedir restriction in effect" warnings
 
     PHP Warning:  file_get_contents(): open_basedir restriction in effect.
@@ -38,7 +53,7 @@ by adding ";" at the beginning of the line. Don't forget to enable this setting
 again once you are done with the PHP command line operations.
 
 
-### PHP timzeone warnings
+### PHP timezeone warnings
 
 The Apache log may contain lots of PHP warnings like this:
     `PHP Warning:  date_default_timezone_set() function.`
@@ -156,7 +171,8 @@ Example error message
 
 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
 
-The permission need to be read & executable by everybody, e.g.
+The permission need to be read & executable by everybody, but not writeable
+by everybody, e.g.
 
 ```
    -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
@@ -167,6 +183,16 @@ Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
 When running SELinux, make sure that the
 [context is set up correctly](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
 
+When you recently updated your operating system, updated PostgreSQL to
+a new version or moved files (e.g. the build directory) you should
+recreate `nominatim.so`. Try
+
+```
+   cd build
+   rm -r module/
+   cmake $main_Nominatim_path && make
+```
+
 ### Setup.php fails with "DB Error: extension not found"
 
 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
@@ -185,11 +211,3 @@ for more information.
 ### Can I import negative OSM ids into Nominatim?
 
 See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).
-
-### Missing XML or text declaration
-
-The website might show: `XML Parsing Error: XML or text declaration not at start of entity Location.`
-
-Make sure there are no spaces at the beginning of your `settings/local.php` file.
-
-