Re: removable media revalidation - udev vs. devfs or static /dev

Olaf Hering
2004-01-30T13:02:23Z

On Wed, Jan 07, Jens Axboe wrote:

> On Wed, Jan 07 2004, Olaf Hering wrote:
> > On Wed, Jan 07, Jens Axboe wrote:
> >
> > > No need to put it in the kernel, user space fits the bil nicely. I don't
> > > see how this would lead to IO errors?
> >
> > Ok, how should it be done on my SCSI and parallel port ZIP? An ATAPI ZIP
> > with 2.4 behaves like that:
> >
> >
> > nectarine:~ # blockdev --rereadpt /dev/hdd
> > /dev/hdd: Eingabe-/Ausgabefehler
> > nectarine:~ # dmesg | tail
> > nfs: server Hilbert2 OK
> > nfs: server Hilbert3 not responding, still trying
> > nfs: server Hilbert3 OK
> > nfs: server Hilbert3 not responding, still trying
> > nfs: server Hilbert3 OK
> > nfs: server Hilbert2 not responding, still trying
> > nfs: server Hilbert2 OK
> > ide-floppy: hdd: I/O error, pc = 0, key = 2, asc = 3a, ascq = 0
> > ide-floppy: hdd: I/O error, pc = 1b, key = 2, asc = 3a, ascq = 0
> > hdd: No disk in drive
> > nectarine:~ # cat /proc/ide/hdd/model
> > IOMEGA ZIP 100 ATAPI
>
> Two problems here. First, ide-floppy should not verbosely fail these
> commands (2/3a/00 is 'medium not present'). Second, you are not using
> the proper mechanism to detect media events.

2.6.2-mm2 prints still these warnings. Should the driver handle this
'special' case?

ide-floppy driver 0.99.newide
hdd: No disk in drive
hdd: 98304kB, 96/64/32 CHS, 4096 kBps, 512 sector size, 2941 rpm
ide-floppy: hdd: I/O error, pc = 0, key = 2, asc = 3a, ascq = 0
ide-floppy: hdd: I/O error, pc = 1b, key = 2, asc = 3a, ascq = 0
hdd: No disk in drive
ide-floppy: hdd: I/O error, pc = 0, key = 2, asc = 3a, ascq = 0
ide-floppy: hdd: I/O error, pc = 1b, key = 2, asc = 3a, ascq = 0
hdd: No disk in drive

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