merging into DVD+RW with growisofs && non aligned DMA transfer (7.0R)

Matthias Apitz guru at
Sun Jul 13 07:06:15 UTC 2008


I wanted to add a file to an already written DVD+RW (written a day
before on the same system) with

# growisofs  -M /dev/cd0 -r -T -J -joliet-long -v directory

This produced tons of error messages via syslog as

Jul 11 13:45:30 rebelion kernel: ata0: FAILURE - non aligned DMA
transfer attempted
Jul 11 13:45:30 rebelion kernel: acd0: setting up DMA failed

and the only way to get the system back to a usable state was rebooting

I've reloaded the files from the DVD to the file system, added the file
I wanted get merged and wrote the DVD again with -Z which worked fine;

this is with FreeBSD-7.0R; what is wrong with -M or what I've done wrong?



Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
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«...una sola vez, que es cuanto basta si se trata de verdades definitivas.»
«...only once, which is enough if it has todo with definite truth.»
José Saramago, Historia del Cerca de Lisboa

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