Date: Thu, 16 Sep 2004 12:22:37 +0200
From: Jens Axboe <axboe@suse.de>
To: "Bc. Michal Semler" <cijoml@volny.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: CD-ROM can't be ejected
Message-ID: <20040916102236.GB2300@suse.de>
References: <200409160025.35961.cijoml@volny.cz> <200409161013.35454.cijoml@volny.cz> <20040916090540.GX2300@suse.de> <200409161113.55719.cijoml@volny.cz>
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On Thu, Sep 16 2004, Bc. Michal Semler wrote:
> > > > On Thu, Sep 16 2004, Bc. Michal Semler wrote:
> > > > > notas:/home/cijoml# mount /cdrom/
> > > > > notas:/home/cijoml# umount /cdrom/
> > > > > notas:/home/cijoml# strace -o eject /dev/hdc
> > > > > eject: unable to eject, last error: Nep??pustn? argument
> > > > >
> > > > > As you can see, I dont't enter to directory...
> > > > >
> > > > > And output is included
> > > > >
> > > > > ioctl(3, CDROMEJECT, 0xbffffac8)        = -1 EIO (Input/output error)
> > > >
> > > > That's the important bit, the reason you get EINVAL passed back is
> > > > because eject tries the floppy eject as well and decides to print the
> > > > warning from that. It really should just stop of it sees -EIO, only
> > > > continue if EINVAL/ENOTTY is passed back.
> > > >
> > > > Try this little c program and report back what it tells you. Compile
> > > > with
> > > >
> > > > gcc -Wall -o eject eject.c
> > > >
> > > > and run without arguments.
> > > >
> > > > #include <stdio.h>
> > > > #include <stdlib.h>
> > > > #include <fcntl.h>
> > > > #include <string.h>
> > > > #include <sys/ioctl.h>
> > > > #include <linux/cdrom.h>
> > > >
> > > > int main(int argc, char *argv[])
> > > > {
> > > > 	int fd = open("/dev/hdc", O_RDONLY | O_NONBLOCK);
> > > > 	struct cdrom_generic_command cgc;
> > > > 	struct request_sense sense;
> > > >
> > > > 	memset(&cgc, 0, sizeof(cgc));
> > > > 	memset(&sense, 0, sizeof(sense));
> > > >
> > > > 	cgc.cmd[0] = 0x1b;
> > > > 	cgc.cmd[4] = 0x02;
> > > > 	cgc.sense = &sense;
> > > > 	cgc.data_direction = CGC_DATA_NONE;
> > > >
> > > > 	if (ioctl(fd, CDROM_SEND_PACKET, &cgc) == 0) {
> > > > 		printf("eject worked\n");
> > > > 		return 0;
> > > > 	}
> > > >
> > > > 	printf("command failed - sense %x/%x/%x\n", sense.sense_key,
> > > > sense.asc, sense.ascq); return 1;
> > > > }
> > >
> > > 2.4.27-mh1
> > > notas:~# /home/cijoml/eject
> > > ATAPI device hdc:
> > >   Error: Not ready -- (Sense key=0x02)
> > >   (reserved error code) -- (asc=0x53, ascq=0x02)
> > >   The failed "Start/Stop Unit" packet command was:
> > >   "1b 00 00 00 02 00 00 00 00 00 00 00 "
> > > command failed - sense 2/53/2
> >
> > Your tray is still locked, are you sure it isn't mounted?
> 
> Yes I am. This is written into console and I am logged only into this
> console and I copied whole commands from login to eject... :(

For the third time, don't trim the cc list! group reply please.

Something else must be keeping your drive locked. What else do you have
running in the system? It's enough if one app is just holding the drive
open, the drive wont get unlocked on umount then.

-- 
Jens Axboe

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