[erlang-questions] Unable to start mnesia DB.

Karolis Petrauskas k.petrauskas@REDACTED
Mon Jul 8 13:16:41 CEST 2013


    I cannot load table after erlang node restart. Mnesia prints no errors,
just is loading the database for very long time. The database is on single
node, all tables are disc_copy. In total the DB is ~220 MB. On startup, the
last thing the mnesia prints is:

    Getting table my_db_lnk (disc_copies) from disc: local_only

Size of this table (my_db_lnk) on disc is is ~36 MB in the DCD file and ~7
MB in he DCL file. This table is not the last table to be loaded in the
database. IO at that time is almost zero, but CPU is used heavily (200% on
machine having 2 cores). I was waiting for 3 hours for this table and then
aborted. Tried to restart the node with the following options:

    bin/app console_clean -mnesia debug trace -mnesia auto_repair false

But situation has not been changed. mnesia:info() shows several of my
tables as active, but not all. After printing "Getting table...", mnesia
prints "Transaction log dump initiated by time_threshold: already_dumped"
from time to time.

    How could i debug this situation?

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