Backup question and restore error

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David Carr

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May 21, 2015, 10:50:05 AM5/21/15
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I have orientdb 2.0.5 running in server mode, being accessed remotely by a web server. I want to take a manual backup and restore it on a different server.

Per online documentation, the backup command does not work via remote connection. I have to ssh into the db server, open a orientdb console, and connect via plocal. Here we go...


# /usr/bin/orientdb-community-2.0.5/bin/console.sh


OrientDB console v.2.0.5 (build UNKNOWN@r; 2015-03-12 22:59:10+0000) www.orientechnologies.com
Type 'help' to display all the supported commands.
Installing extensions for GREMLIN language v.2.6.0


orientdb
> connect plocal:/data/orientdb/mydb admin admin


Connecting to database [plocal:/data/orientdb/mydb] with user 'admin'...
Error: com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/orientdb/mydb' with mode=rw


Error: com.orientechnologies.orient.core.exception.OSerializationException: Cannot load database's configuration. The database seems to be corrupted.


Error: com.orientechnologies.common.concur.lock.OLockException: File '
/data/orientdb/mydb/database.ocf' is locked by another process, maybe the database is in use by another process. Use the remote mode with a OrientDB server to allow multiple access to the same database.


It seems like in order to connect via plocal, orientdb must not be running in server mode. In order to continue I must cut off my web users from the db altogether. Here we go...


# /etc/init.d/orientdb.sh stop
Stopping OrientDB server daemon...
# /usr/bin/orientdb-community-2.0.5/bin/console.sh


OrientDB console v.2.0.5 (build UNKNOWN@r; 2015-03-12 22:59:10+0000) www.orientechnologies.com
Type 'help' to display all the supported commands.
Installing extensions for GREMLIN language v.2.6.0


orientdb
> connect plocal:/data/orientdb/mydb admin admin


Connecting to database [plocal:/data/orientdb/mydb] with user 'admin'...OK
orientdb
{db=mydb}> backup database orientdb-backup-mydb.zip



This command works. The backup completes in 15 minutes and now I can exit from the console, and start server mode to restore access to my end users...


orientdb {db=mydb}> exit



# /etc/init.d/orientdb.sh start
Starting OrientDB server daemon...



Question 1: Is there a way I can do a manual backup without causing 15 minutes of system downtime for end-users?


Next issue... Now I have a .zip file backup and I copy it to a new machine with orientdb 2.0.5 installed. First I create a new local plocal


orientdb> create database plocal:mydb

Creating database [plocal:mydb] using the storage type [plocal]...
Database created successfully.


Current database is: plocal:mydb
orientdb
{db=mydb}> restore database orientdb-backup-mydb.zip


Restoring database database orientdb-backup-mydb.zip...
- Uncompressing file OUser.name.sbt...
Error: java.io.IOException: The process cannot access the file because another process has locked a portion of the file


orientdb
{db=mydb}>



Question 2: What am I doing wrong? The only process locking my db is me. If I exit my console now I can delete the data directory entirely and nothing stops me - indicating no other process is locking that file/dir.

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