Thank you for your quick reply. The first crash happened surprisingly at a restart. The messages gave no details whatsoever, only “segfault”.
Changing configuration setting made no difference. After a while, the crashes started to happen a few minutes or even hours after a restart so that I was able to dump most databases. The crashes kept happening unpredictably. Reinstallation made no difference, even if all database and configuration files were removed. I then purged all Maria DB packages (and Kopano) and tested the harddisks and filesystems. No errors were found. I reinstalled the Maria DB server, re-created the users and databases and restored the databases from the dumps. No further crashes have happened. Thanks again. - Axel
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