[ros-users] Recovery strategy for corrupted bag?

[Tim Field]

Hi Mac,

I created a ticket here: https://code.ros.org/trac/ros/ticket/3196.  If
possible, please update the ticket with instructions for downloading your
bag and also include the version of rosbag you're using.

When I implemented indexing in bag files and the rosbag reindex command, I
never made any guarantees that arbitrary corrupted bag files would be
recoverable.

That said, it should be possible to make rosbag reindex recover your data
(at least up until the messages in the final corrupted chunk.)

Thanks,
Tim

On Thu, Dec 16, 2010 at 12:24 PM, Mac Mason <mac at cs.duke.edu> wrote:

> Hello folks,
>
> I have a several-GB bagfile that's corrupted (the machine taking the data
> locked up hard mid-run). rosbag play dies with "Expected INDEX_DATA record";
> everything else tells me I need to reindex it.
>
> However, when I reindex it, the resulting file shows the same behavior
> (including the "please reindex this" from just about everything).
>
> Am I completely hosed here, or is there anything worth looking into?
>
> Thanks!
>
>        --Mac
>
> --
> Julian "Mac" Mason      mac at cs.duke.edu      www.cs.duke.edu/~mac<http://www.cs.duke.edu/%7Emac>
>
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