2000-12-12 09:04:19

by Xavier Bestel

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Subject: 2.2.18pre24 spurious diskchanges

Hi,

on my ide CDROm I get, roughly each 2 seconds, disk changes although the
drive is empty and I don't touch it:

Dec 12 08:57:43 localhost kernel: VFS: Disk change detected on device
ide0(3,64)
Dec 12 08:58:14 localhost last message repeated 16 times
Dec 12 08:59:16 localhost last message repeated 31 times
Dec 12 09:00:17 localhost last message repeated 30 times
Dec 12 09:01:19 localhost last message repeated 31 times
Dec 12 09:02:21 localhost last message repeated 31 times
etc ...


Xav


2000-12-12 11:00:45

by Xavier Bestel

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Subject: Re: 2.2.18pre24 spurious diskchanges

> >on my ide CDROm I get, roughly each 2 seconds, disk changes although the
> >drive is empty and I don't touch it:
> >
> >Dec 12 08:57:43 localhost kernel: VFS: Disk change detected on device
> >ide0(3,64)
> >Dec 12 08:58:14 localhost last message repeated 16 times
> >Dec 12 08:59:16 localhost last message repeated 31 times
> >Dec 12 09:00:17 localhost last message repeated 30 times
> >Dec 12 09:01:19 localhost last message repeated 31 times
> >Dec 12 09:02:21 localhost last message repeated 31 times
> >etc ...
>
> It would probably help if you told us what make/model CD-ROM drive, and
> whether you're using any particular driver with it (usually the standard
> ATAPI one).

Dec 11 17:13:38 localhost kernel: hdb: UJDA150, ATAPI CDROM drive
Dec 11 17:13:38 localhost kernel: ide2: ports already in use, skipping probe
Dec 11 17:13:38 localhost kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Dec 11 17:13:38 localhost kernel: hda: IBM-DADA-25400, 5153MB w/460kB Cache, CHS=698/240/63, UDMA
Dec 11 17:13:38 localhost kernel: hdb: ATAPI 24X CD-ROM drive, 128kB Cache
Dec 11 17:13:38 localhost kernel: Uniform CD-ROM driver Revision: 3.11

It's the internal CDROM in a Compaq Armada 1700.

Oops, I just killed magicdev, as told by someone, and this is gone.

Xav

2000-12-12 12:11:30

by Jens Axboe

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Subject: Re: 2.2.18pre24 spurious diskchanges

On Tue, Dec 12 2000, Xavier Bestel wrote:
> > >on my ide CDROm I get, roughly each 2 seconds, disk changes although the
> > >drive is empty and I don't touch it:
> > >
> > >Dec 12 08:57:43 localhost kernel: VFS: Disk change detected on device
> > >ide0(3,64)
> > >Dec 12 08:58:14 localhost last message repeated 16 times
> > >Dec 12 08:59:16 localhost last message repeated 31 times
> > >Dec 12 09:00:17 localhost last message repeated 30 times
> > >Dec 12 09:01:19 localhost last message repeated 31 times
> > >Dec 12 09:02:21 localhost last message repeated 31 times
> > >etc ...
> >
> > It would probably help if you told us what make/model CD-ROM drive, and
> > whether you're using any particular driver with it (usually the standard
> > ATAPI one).

Huh? It says (3,64) which would make it hdd -- the only driver possible
is ide-cd here.

> Oops, I just killed magicdev, as told by someone, and this is gone.

Yep, remove that awful beast.

--
* Jens Axboe <[email protected]>
* SuSE Labs

2000-12-12 13:05:01

by Alan

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Subject: Re: 2.2.18pre24 spurious diskchanges

> on my ide CDROm I get, roughly each 2 seconds, disk changes although the
> drive is empty and I don't touch it:

some drives report a disk change every time they are asked when empty. This
confuses magicdev somewhat