Messages in this thread | | | Date | Tue, 25 Jan 2000 19:52:53 +0100 | From | Guest section DW <> | Subject | Re: Unable to reread SCSI optical disks |
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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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