Re: --sequential-read not sequential???

>> the --sequential-read option lead dar to be suitable to read an
>> archive from a pipe. If for some reason (corruption, dirty file, etc.)
>> it need to skip back or forward it tries to do so. If that fails
>> because the system refused, it continues as if it had not requested to
>> skipped. The reason why skipping is needed should show with -vm
>> option. This may lead
>> to request an other slice.

I tried a run with -vm. It showed me many messages at the beginning,
after fetching the first slice, and finishing with:

All layers have been created successfully
The catalogue will be filled while sequentially reading the archive,
preparing the data structure...

After that, it loaded the processed slices (2-9 in this case) and then
loaded slices 1 and 2 again. But with no messages displayed about why it
did that.

I will try switching to dar_xform as you recommended.