MCE Fails to load trasactions

Question

When i lunch MCE with --commit and --no-serve i get the error below, i deleted the DB file and ran it again but the error remains:

 

Failed to catch up {'blkfile_offset': 3823696, 'blkfile_number': 100000, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/ubuntu/.multichain/rabo', 'id': 1}
Traceback (most recent call last):
  File "Mce/DataStore.py", line 2861, in catch_up
    if not store.catch_up_rpc(dircfg):
  File "Mce/DataStore.py", line 3094, in catch_up_rpc
    store.imported_bytes(block['size'])
  File "Mce/DataStore.py", line 2852, in imported_bytes
    store.flush()
  File "Mce/DataStore.py", line 2845, in flush
    store.commit()
  File "Mce/DataStore.py", line 255, in commit
    store._sql.commit()
  File "Mce/SqlAbstraction.py", line 515, in commit
    sql.conn().commit()
OperationalError: disk I/O error
Reconnecting after rollback error: cannot rollback - no transaction is active
Reconnecting to database.

Answer 1

This doesn't look like a bug specifically in the MultiChain Explorer, but rather a problem accessing the disk. The most likely guess is that the database file (for the embedded SQLite engine) is somehow not writable. Beyond that I'm afraid you may have to diagnose this by searching the Internet to see what could cause this error.