[Box Backup] bug report: choking on big file

Ben Summers boxbackup at fluffy.co.uk
Wed Dec 21 10:27:54 GMT 2005


The cygwin port isn't really tested, and does miss out some  
functionality. It appears that one bit of this functionality is the  
ability to abort long diffing operations.

Have you tried the native Windows client? This can do this, and keeps  
the connection alive over long operations as well.

Ben


On 21 Dec 2005, at 10:19, john wrote:

> Hi!
>
> boxbackup is failing to backup on of my partitions (NTFS Windows
> XP). To be more exact, on the first run all files were backuped, as
> far as I can control this. But consecutive runs did at least miss some
> files for update, so I traced down the problem with the debug version
> of bbackupd.
>
> There seems to be a problem with a 512MB file of randomdata. This was
> backuped once, but never updated. The corresponding log file snippet
> locks like this:
>
> Send GetBlockIndexByName(0x4069,"randomdata")
> Receive Success(0x406a)
> Receiving stream, size 128028
> TRACE: WARNING: couldn't set diff timeout
> TRACE: Diff: 68681728 new bytes found, 3476 old blocks used
> Send StoreFile 
> (0x4069,0x408570ed723c0,0xe3f6f467be7b9987,0x406a,"randomdata")
> Sending stream, size uncertain
> TRACE: Exception thrown: ConnectionException(Conn_TLSWriteFailed)  
> at SocketStreamTLS.cpp(406)
> Send SetClientStoreMarker(0x4086a8512ccc0)
> SSL err during Write: error:1409F07F:SSL  
> routines:SSL3_WRITE_PENDING:bad write retry
> TRACE: Exception thrown: ConnectionException(Conn_TLSWriteFailed)  
> at SocketStreamTLS.cpp(406)
> Exception caught (7/33), reset state and waiting to retry...
> File statistics: total file size uploaded 524286464, bytes already  
> on server 0, encoded size 0
> Beginning scan of local files
> Opening connection to server backuptest...
> TRACE: Send block allocation size is 4
> Send Version(0x1)
> ...
>
> At this point, bbackupd starts all over again, finally tries to backup
> the file randomdata again, fails again, starts over again...
>
> So randomdata and all following files never receive an incremental
> update.
>
> The log line
>  File statistics: total file size uploaded 524286464, bytes already  
> on server 0, encoded size 0
> irritates me. There is a file with 256188 blocks called randomdata on
> the backup store.
>
> For a test I renamed randomdata to randomdata1. On the backup store  
> the
> state of randomdata was changed to deleted and the current version of
> randomdata1 was backuped successfully. Incremental updates on
> randomdata1 failed then again.
>
> I am using boxbackup V0.09, with bbackupd running under cygwin and
> bbstored installed on a debian server.
>
> Hacky Holidays,
> John
>
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