Details
-
Type:
Bug
-
Status: Closed
-
Priority:
Major
-
Resolution: Not a Bug
-
Affects Version/s: 10.0.0, 5.5.28a, 5.3.11
-
Fix Version/s: 10.0.2
-
Component/s: None
-
Labels:None
-
Environment:WinXP
Description
An error message tells that MariaDB can't find the modules, but I see the DLL files in the specified dir:
MariaDB [(none)]> SELECT @@global.plugin_dir;
+---------------------------------------+
| @@global.plugin_dir |
+---------------------------------------+
| C:\Programmi\MariaDB 10.0\lib\plugin\ |
+---------------------------------------+
1 row in set (0.11 sec)
MariaDB [(none)]> INSTALL PLUGIN oqgraph SONAME 'ha_oqgraph.dll';
ERROR 1126 (HY000): Can't open shared library 'C:\Programmi\MariaDB 10.0\lib\plu
gin\ha_oqgraph.dll' (errno: 2 Impossibile trovare il modulo specificato.
)
MariaDB [(none)]> INSTALL PLUGIN blackhole SONAME 'ha_blackhole.dll';
ERROR 1126 (HY000): Can't open shared library 'C:\Programmi\MariaDB 10.0\lib\plu
gin\ha_blackhole.dll' (errno: 2 Impossibile trovare il modulo specificato.
)
Gliffy Diagrams
Attachments
Activity
- All
- Comments
- Work Log
- History
- Activity
- Transitions
Hi! I don't know that tool. Probably a short doc is a good idea.
Hi,
I hope this is what you want. I only captured events from "mysqldd" process, and I enabled advanced output.
Please let me know if I missed something or you want more info.
Hi Federico,
unfortunately this trace only contains system-wide profiling events, so I can't fish useful info from it. I wrote up a small KB article
https://kb.askmonty.org/en/how-to-use-procmon-to-trace-mysqldexe-filesystem-access/
using "install plugin" as example.
Could you please try it again, as in the article? Should take only couple of minutes.
Ok, I looked again into the procmon logs. It appears you run mysqld.exe renamed as mysqldd.exe . This won't work with plugins. And the reason is - this is how linking on Windows works, plugins use/import function from the server executable, and functions are imported using both module name and function name. And module name was mysqld.exe when server was built.
Loading fails because symbols imported from mysqld.exe are unresolved.
Resolution would be to use the original name mysqld.exe.
I attached a picture demonstrating plugin dependency from mysqld.exe, and imported symbols, using DependencyWalker tool
Hi Federico,
So far I wasn't able to reproduce the problem. Could you please provide the full output of "dir" command in the specified folder (or whatever else you have on the machine that will produce the list of files with their sizes)?
Please also run
SHOW VARIABLES LIKE '%version%';
and paste its output also.
Thanks.