DB backup/restore

[Tze-John Tang]

I have looked at the manual pages, but I am unsure how backup and restore is supposed to function.

The server was shutdown improperly, and now I am getting missing page errors when querying the store. I have some backups from the past few days. 

My db already exists, so I used the overwrite option to write over the db.

stardog-admin db restore -o /backup/path

From the stardog.log file..

Reading Index: 100% complete in 00:01:23
Reading Index finished in 00:01:23.460
Creating index: 100% complete in 00:01:38 (181.9K triples/sec)
Creating index finished in 00:01:38.261

But when I list the dbs, nothing is shown:

websvc@ua00017p:/opt/apps/stardog_data> stardog-admin db list
No databases in the system; use the 'create' command to make a new database.
websvc@ua00017p:/opt/apps/stardog_data>

If I restore the db to a new name, I get the same thing. Also if I remove the existing db, and create a new one, and then restore over it.

Thanks,

-tj

[Tze-John Tang]

Looks like it might have been a bad backup. When I try a different one it progresses past the index restore step. The other one was existing, but since I had never restored before, I did not know what to expect.

Thanks,

-tj

[Mike Grove]

Would it be possible to get the bad backup so that we might try to figure out why the restore didn't fail as expected when restoring from a bad backup?

Cheers,

Mike

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[Tze-John Tang]

Sorry Mike. I cleared it out before I saw your message. It looks like it was erroring out on a missing diff file.

-tj

[Mike Grove]

Do you happen to have the stacktrace or other error information?

Thanks.

Mike

[Tze-John Tang]

Jun 27, 2014 8:32:33 AM com.complexible.stardog.metadata.MetadataIO readBytes

WARNING: Unrecognized option in the metadata: backup.dict.size

Jun 27, 2014 8:36:14 AM com.complexible.stardog.index.io.IndexIO restore

SEVERE: Error in restoring from backup

com.complexible.stardog.index.IndexException: diff

        at com.complexible.stardog.index.disk.DiskIndexData.getDifferentialIndexManager(DiskIndexData.java:68)

        at com.complexible.stardog.index.AggregateIndexData.<init>(AggregateIndexData.java:38)

        at com.complexible.stardog.index.AbstractIndex.<init>(AbstractIndex.java:193)

        at com.complexible.stardog.index.disk.DiskIndex.<init>(DiskIndex.java:53)

        at com.complexible.stardog.index.disk.AbstractDiskIndexLoader.build(AbstractDiskIndexLoader.java:139)

        at com.complexible.stardog.index.disk.AbstractDiskIndexLoader.build(AbstractDiskIndexLoader.java:45)

        at com.complexible.stardog.index.io.IndexIO.restore(IndexIO.java:631)

        at com.complexible.stardog.db.DatabaseFactory.restore(DatabaseFactory.java:82)

        at com.complexible.stardog.StardogKernel.restore(StardogKernel.java:1497)

        at com.complexible.stardog.protocols.server.admin.AdminServerFunction.restore(AdminServerFunction.java:584)

        at com.complexible.stardog.protocols.server.admin.AdminServerFunction.handleMessage(AdminServerFunction.java:115)

        at com.complexible.common.protocols.server.rpc.ServerHandler.handleMessage(ServerHandler.java:256)

        at com.complexible.common.protocols.server.rpc.ServerHandler.channelRead(ServerHandler.java:143)

        at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:340)

        at io.netty.channel.DefaultChannelHandlerContext.access$700(DefaultChannelHandlerContext.java:29)

        at io.netty.channel.DefaultChannelHandlerContext$8.run(DefaultChannelHandlerContext.java:331)

        at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:36)

        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)

        at java.lang.Thread.run(Thread.java:722)

Caused by: java.io.FileNotFoundException: diff

        at com.complexible.stardog.index.disk.DiskDifferentialIndexManager.<init>(DiskDifferentialIndexManager.java:35)

        at com.complexible.stardog.index.disk.DiskIndexData.getDifferentialIndexManager(DiskIndexData.java:65)

        ... 18 more

[Mike Grove]

Great, thanks for sending that along.

Cheers,

Mike