Messages in this thread | | | Date | Wed, 05 Jun 2002 17:43:55 +0100 | From | Padraig Brady <> | Subject | Re: Need help tracing regular write activity in 5 s interval |
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Owen Taylor wrote: > Padraig Brady <padraig@antefacto.com> writes: > >>I'm sure it will :-) >> >>However this it just masking the "problem" > > Well, the question is, "what is the problem"? > > Your problem is that a debug message is being output by the kernel and > filling your logs. If the debug message doesn't do anybody any good > (and it doesn't) then removing the debug message is a fine way of > solving the problem.
True. But I thought there might be (future) side affects of cdrom_media_changed() always returning true. Why is it there at all?
> I looked at _why_ the debug message was being generated in this > particular case a long time ago, and it seemed to essentially be a bug > in the IDE code
Yes that's my guess, and I may have time to look at it.
, but other than generating the debug message, > basically a harmless one, and there was no interest in fixing it among > the kernel people I talked to at the time. > > (I don't remember details any more; it was several years ago.) > > >>, and I don't >>think it's "buggy CDROM drives" as I've tried 3 different >>machines with the following drives: >> >>SAMSUNG DVD-ROM SD-612 >>TOSHIBA DVD-ROM SD-C2402 >>CREATIVE CD5233E >> >>and they all show the same problem. I.E. logs filling with >>"VFS: Disk change detected on device ide1(22,0)". > > *This* problem is certainly not a buggy CD-ROM. There are other > (rarer) problems with logs filling with magicdev that do have to do > with buggy CD-ROM drives; so that is perhaps what you heard about. > > (Most common one is that some Yamaha CD-RW's apparently report media > in the drive when they don't have any media in the drive. magicdev > tries to mount it, and that failure generates an error message.) > > [...] > >>Also related, why does the LED flash on every ATA command? >>Is this controlled by the drive or ide controller? >>Are you telling me that windows would flash the LED every so often >>to automount CDs? > > Are you sure that the LED flashing isn't the debug messages being > written to your hard drive?
Yep. Good point though.
thanks, Padraig.
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