Tvheadend

I agree that this is not bug per say and I didnt know to report it as the bug or feture ;) I understand that multiple users would just fight over resources therefore it should not be allowed by default but for debugging purposes in the enviroment where tvh accessed only by single user then running command such as "dvbsnoop -s pidscan" should IMHO be at least left as an option to be allowed work and therefore user could check in webgui "no exclusive rights to the driver". I do not know about web ui possibilities but if tooltips are to be implemneted in the future the it could say "recomended only in single user enviroment"

ATM it is not possible

dvbsnoop s pidscan
dvbsnoop V1.4.50 - http://dvbsnoop.sourceforge.net/

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Transponder PID-Scan...
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Error(16): /dev/dvb/adapter0/dvr0: Device or resource busy

Indeed, that will not work because a PID scan works by using the DVR device. You cannot do such things during normal operation, so would have to be done outside of TVH.

Of course you could try a manual PID scan by trying each PID one at a time on the DEMUX device ;) but that would take time.

I am not aware of there being any other way of doing things, as allowing other clients access to the DVR device would horribly break things.

Adam