On Tue, Jan 25, 2000 at 05:36:51PM +0100, Giuliano Pochini wrote:
> > I have an old MaxOptix optical drive that has been used for years
> > [...]
> > My problem comes when I unmount the disk, eject it and insert a
> > different disk. It appears to mount ok but when I look at the
> > data it has the directory structure that was on the old disk
> > [...]
>
> Again this problem :-( Some devices don't send the signal UNIT_ATTENTION when
> the disk is changed, so Linux don't know it has to flush the caches. I had the
> same problem with my M/O drive, then I discovered that a jumper can
> enable/disable that signal...
> You can solve the problem trying to mount the device while no disk is
> inserted. The failure will force a call to invalidate_buffers() (see
> sd.c:check_media_change()). Then insert a new disk; it should work fine now.
Yes. A cleaner way is just to call "blockdev --flushbufs device".
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This archive was generated by hypermail 2b29 : Mon Jan 31 2000 - 21:00:15 EST