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On Sat, Jan 03, Jens Axboe wrote: > On Sat, Jan 03 2004, Andrey Borzenkov wrote: > > > Is there really no way to get a media change notification from ZIP or > > > JAZ drives? > > > > If anyone knows please tell me - I will put it into supermount ... > > > > AFAIK in case of SCSI this is impossible simply by virtue of protocol - SCSI > > device is not initiator. So you need something to poll device for status. > > That is usually done on device open except in this case you can't open > > because you do not yet have handle. > > You could queue a media notification request for long periods of time, > being completed by the drive when a media change happens. At least mmc > allows for this, doubt anyone has ever done it. > > So yeah, poll... Poll how? "kmediachangethread"? Or polling in userland? The latter would (probably) lead to endless IO errors. Not very good. If I understand the Darwin sources correctly, a polling is used. But I havent looked hard how they do it. -- USB is for mice, FireWire is for men! sUse lINUX ag, nÜRNBERG - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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