CD not recognised by udev

CD not recognised by udev

[karaluh]

Hello,
I've got Discworld II game, which is safedisc protected and maybe for that 
reason not recognised by udev (udevmonitor doesn't display any info when one 
of those cd's is inserted). Manual mount works fine though, but it's not a 
sollution for me. I need the cd's to be automounted, cause I have to switch 
cd's during gameplay, and it's impossible with the mount command.
-- 
Best regards,
karaluh

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Re: CD not recognised by udev

[Alexander E. Patrakov]

karaluh wrote:
> Hello,
> I've got Discworld II game, which is safedisc protected and maybe for that 
> reason not recognised by udev (udevmonitor doesn't display any info when one 
> of those cd's is inserted). Manual mount works fine though, but it's not a 
> sollution for me. I need the cd's to be automounted, cause I have to switch 
> cd's during gameplay, and it's impossible with the mount command.

Wrong list. Udev never mounts CDs, this is the task of gnome-volume-manager, 
its KDE equivalent, or ivman (that rely on HAL to get the correct 
information for mounting).

-- 
Alexander E. Patrakov


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Re: CD not recognised by udev

[karaluh]

Dnia niedziela 04 luty 2007, napisałeś:
> > I've got Discworld II game, which is safedisc protected and maybe for
> > that reason not recognised by udev (udevmonitor doesn't display any info
> > when one of those cd's is inserted). Manual mount works fine though, but
> > it's not a sollution for me. I need the cd's to be automounted, cause I
> > have to switch cd's during gameplay, and it's impossible with the mount
> > command.
> Wrong list. Udev never mounts CDs,

Yes, I know that. But when I insert any data cd I get info in udevmonitor 
simmilar to:
UEVENT[1170612782.483192] mount@/block/hda
UDEV  [1170612782.491127] mount@/block/hda
and when I insert Discworld II cds I get no info. So I thought this is the 
reason for not geting those cds automounted by HAL.

> this is the task of gnome-volume-manager, its KDE equivalent, or ivman (that
> rely on HAL to get the correct information for mounting).

I'll go bothering the HAL dev team then, just dispel my doubts and confirm 
that it's definitely not udev's fault.
-- 
Best regards,
karaluh

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Re: CD not recognised by udev

[Bryan Kadzban]

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karaluh wrote:
> Yes, I know that. But when I insert any data cd I get info in udevmonitor 
> simmilar to:
> UEVENT[1170612782.483192] mount@/block/hda
> UDEV  [1170612782.491127] mount@/block/hda

Those are mount events (not add or remove).  They show up in response to
a mount, not to cause one.  (Just like add and remove events appear in
response to hardware or modules or whatever being added or removed.)


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Re: CD not recognised by udev

[Kay Sievers]

On 2/4/07, karaluh <karaluh@tlen.pl> wrote:
> I've got Discworld II game, which is safedisc protected and maybe for that
> reason not recognised by udev (udevmonitor doesn't display any info when one
> of those cd's is inserted). Manual mount works fine though, but it's not a
> sollution for me. I need the cd's to be automounted, cause I have to switch
> cd's during gameplay, and it's impossible with the mount command.

As already pointed out, udev doesn't care about optical drives,
because they need to be polled to get notifications about a media
change. Anyway, HAL depends on detecting a filesystem prior to a
possible mount. This is provided by libvolume_id. What does:
  /lib/udev/vol_id --export /dev/XXX
print?

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Re: CD not recognised by udev

[karaluh]

Dnia poniedziałek 05 luty 2007, Kay Sievers napisał:
> On 2/4/07, karaluh <karaluh@tlen.pl> wrote:
> > I've got Discworld II game, which is safedisc protected and maybe for
> > that reason not recognised by udev (udevmonitor doesn't display any info
> > when one of those cd's is inserted). Manual mount works fine though, but
> > it's not a sollution for me. I need the cd's to be automounted, cause I
> > have to switch cd's during gameplay, and it's impossible with the mount
> > command.
> As already pointed out, udev doesn't care about optical drives,
> because they need to be polled to get notifications about a media
> change. Anyway, HAL depends on detecting a filesystem prior to a
> possible mount. This is provided by libvolume_id. What does:
>   /lib/udev/vol_id --export /dev/XXX
> print?

It doesn't print anything. It's the same for automountable cd.
-- 
Best regards,
karaluh

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Re: CD not recognised by udev

[Kay Sievers]

On 2/5/07, karaluh <karaluh@tlen.pl> wrote:
> Dnia poniedziałek 05 luty 2007, Kay Sievers napisał:
> > On 2/4/07, karaluh <karaluh@tlen.pl> wrote:
> > > I've got Discworld II game, which is safedisc protected and maybe for
> > > that reason not recognised by udev (udevmonitor doesn't display any info
> > > when one of those cd's is inserted). Manual mount works fine though, but
> > > it's not a sollution for me. I need the cd's to be automounted, cause I
> > > have to switch cd's during gameplay, and it's impossible with the mount
> > > command.
> > As already pointed out, udev doesn't care about optical drives,
> > because they need to be polled to get notifications about a media
> > change. Anyway, HAL depends on detecting a filesystem prior to a
> > possible mount. This is provided by libvolume_id. What does:
> >   /lib/udev/vol_id --export /dev/XXX
> > print?
>
> It doesn't print anything. It's the same for automountable cd.

Huh, it doesn't even print an error?
You replaced the XXX with your device name? :)

Kay
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Re: CD not recognised by udev

[karaluh]

Dnia poniedziałek 05 luty 2007, Kay Sievers napisał:
> > > > I've got Discworld II game, which is safedisc protected and maybe for
> > > > that reason not recognised by udev (udevmonitor doesn't display any
> > > > info when one of those cd's is inserted). Manual mount works fine
> > > > though, but it's not a sollution for me. I need the cd's to be
> > > > automounted, cause I have to switch cd's during gameplay, and it's
> > > > impossible with the mount command.
> > > As already pointed out, udev doesn't care about optical drives,
> > > because they need to be polled to get notifications about a media
> > > change. Anyway, HAL depends on detecting a filesystem prior to a
> > > possible mount. This is provided by libvolume_id. What does:
> > >   /lib/udev/vol_id --export /dev/XXX
> > > print?
> > It doesn't print anything. It's the same for automountable cd.
> Huh, it doesn't even print an error?

I was suprised too. For one moment I thought something's wrong with the 
vol_id, but when I execute the above command with no cd in drive I get 
/dev/hdb: error open volume
which is ok I suppose. And no matter what cd is in (the problematic or a 
regular one) I get no info from vol_id. I don't know if that's normal. I even 
tried -t -l -u switches, but without result.

> You replaced the XXX with your device name? :)

Of course I did :). If I didn't I would end up with an error anyway.
-- 
Best regards,
karaluh


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Re: CD not recognised by udev

[karaluh]

Dnia środa 07 luty 2007, Kay Sievers napisał:
> > > > > As already pointed out, udev doesn't care about optical drives,
> > > > > because they need to be polled to get notifications about a media
> > > > > change. Anyway, HAL depends on detecting a filesystem prior to a
> > > > > possible mount. This is provided by libvolume_id. What does:
> > > > >   /lib/udev/vol_id --export /dev/XXX
> > > > > print?
> > > > It doesn't print anything. It's the same for automountable cd.
> > > Huh, it doesn't even print an error?
> > I was suprised too. For one moment I thought something's wrong with the
> > vol_id, but when I execute the above command with no cd in drive I get
> > /dev/hdb: error open volume
> > which is ok I suppose. And no matter what cd is in (the problematic or a
> > regular one) I get no info from vol_id. I don't know if that's normal. I
> > even tried -t -l -u switches, but without result.
> Ok, it's not recognized as anything. What does:
>   dd if=/dev/sr0 bs=1 skip2768 count@96 | hexdump -C
> print?

I suppose you ment:
dd if=/dev/hda bs=1 skip2768 count@96 | hexdump -C
In that case it prints:
00000000  01 43 44 30 30 31 01 00  20 20 20 20 20 20 20 20  |.CD001..        |
00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000020  20 20 20 20 20 20 20 20  44 57 32 43 44 31 5f 45  |        DW2CD1_E|
00000030  4e 47 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |NG              |
00000040  20 20 20 20 20 20 20 20  00 00 00 00 00 00 00 00  |        ........|
00000050  85 bf 04 00 00 04 bf 85  00 00 00 00 00 00 00 00  |................|
00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000070  00 00 00 00 00 00 00 00  01 00 00 01 01 00 00 01  |................|
00000080  00 08 08 00 56 01 00 00  00 00 01 56 12 00 00 00  |....V......V....|
00000090  13 00 00 00 00 00 00 14  00 00 00 15 22 00 16 00  |............"...|
000000a0  00 00 00 00 00 16 00 10  00 00 00 00 10 00 60 0b  |..............`.|
000000b0  08 12 0d 20 24 02 00 00  01 00 00 01 01 00 20 20  |... $.........  |
000000c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00000320  20 20 20 20 20 20 20 20  20 20 20 20 20 31 39 39  |             199|
00000330  36 31 31 30 38 31 38 31  33 33 32 30 30 24 30 30  |6110818133200$00|
00000340  30 30 30 30 30 30 30 30  30 30 30 30 30 30 00 30  |00000000000000.0|
00000350  30 30 30 30 30 30 30 30  30 30 30 30 30 30 30 00  |000000000000000.|
00000360  30 30 30 30 30 30 30 30  30 30 30 30 30 30 30 30  |0000000000000000|
00000370  00 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000380  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000400  43 44 2d 58 41 30 30 31  00 00 00 00 00 00 00 00  |CD-XA001........|
00000410  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000800  ff 43 44 30 30 31 01 00  00 00 00 00 00 00 00 00  |.CD001..........|
00000810  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
4096+0 przeczytanych recordów
4096+0 zapisanych recordów
skopiowane 4096 bajtów (4,1 kB), 0,017088 sekund, 240 kB/s
00001000
-- 
Best regards,
karaluh



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Re: CD not recognised by udev

[Kay Sievers]

On 2/7/07, karaluh <karaluh@tlen.pl> wrote:
> Dnia środa 07 luty 2007, Kay Sievers napisał:
> > > > > > As already pointed out, udev doesn't care about optical drives,
> > > > > > because they need to be polled to get notifications about a media
> > > > > > change. Anyway, HAL depends on detecting a filesystem prior to a
> > > > > > possible mount. This is provided by libvolume_id. What does:
> > > > > >   /lib/udev/vol_id --export /dev/XXX
> > > > > > print?
> > > > > It doesn't print anything. It's the same for automountable cd.
> > > > Huh, it doesn't even print an error?
> > > I was suprised too. For one moment I thought something's wrong with the
> > > vol_id, but when I execute the above command with no cd in drive I get
> > > /dev/hdb: error open volume
> > > which is ok I suppose. And no matter what cd is in (the problematic or a
> > > regular one) I get no info from vol_id. I don't know if that's normal. I
> > > even tried -t -l -u switches, but without result.
> > Ok, it's not recognized as anything. What does:
> >   dd if=/dev/sr0 bs=1 skip2768 count@96 | hexdump -C
> > print?
>
> I suppose you ment:
> dd if=/dev/hda bs=1 skip2768 count@96 | hexdump -C
> In that case it prints:
> 00000000  01 43 44 30 30 31 01 00  20 20 20 20 20 20 20 20  |.CD001..        |
> 00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
> 00000020  20 20 20 20 20 20 20 20  44 57 32 43 44 31 5f 45  |        DW2CD1_E|
> 00000030  4e 47 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |NG              |
> 00000040  20 20 20 20 20 20 20 20  00 00 00 00 00 00 00 00  |        ........|
> 00000050  85 bf 04 00 00 04 bf 85  00 00 00 00 00 00 00 00  |................|
> 00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> 00000070  00 00 00 00 00 00 00 00  01 00 00 01 01 00 00 01  |................|
> 00000080  00 08 08 00 56 01 00 00  00 00 01 56 12 00 00 00  |....V......V....|
> 00000090  13 00 00 00 00 00 00 14  00 00 00 15 22 00 16 00  |............"...|
> 000000a0  00 00 00 00 00 16 00 10  00 00 00 00 10 00 60 0b  |..............`.|
> 000000b0  08 12 0d 20 24 02 00 00  01 00 00 01 01 00 20 20  |... $.........  |
> 000000c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
> *
> 00000320  20 20 20 20 20 20 20 20  20 20 20 20 20 31 39 39  |             199|
> 00000330  36 31 31 30 38 31 38 31  33 33 32 30 30 24 30 30  |6110818133200$00|
> 00000340  30 30 30 30 30 30 30 30  30 30 30 30 30 30 00 30  |00000000000000.0|
> 00000350  30 30 30 30 30 30 30 30  30 30 30 30 30 30 30 00  |000000000000000.|
> 00000360  30 30 30 30 30 30 30 30  30 30 30 30 30 30 30 30  |0000000000000000|
> 00000370  00 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> 00000380  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 00000400  43 44 2d 58 41 30 30 31  00 00 00 00 00 00 00 00  |CD-XA001........|
> 00000410  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 00000800  ff 43 44 30 30 31 01 00  00 00 00 00 00 00 00 00  |.CD001..........|
> 00000810  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 4096+0 przeczytanych recordów
> 4096+0 zapisanych recordów
> skopiowane 4096 bajtów (4,1 kB), 0,017088 sekund, 240 kB/s

Hmm, don't know why this isn't recognized. What udev version and what
distro is it?

Care to do:
  strace -o vol_id.trace -t -s100000 /lib/udev/vol_id --export /dev/hda

and send me the created "vol_id.trace" file by private email, because
it is pretty large.

Thanks,
Kay
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Re: CD not recognised by udev

[karaluh]

Dnia środa 07 luty 2007, napisałeś:
> Hmm, don't know why this isn't recognized. What udev version and what
> distro is it?

093, Kubuntu Edgy.

> Care to do:
>   strace -o vol_id.trace -t -s100000 /lib/udev/vol_id --export /dev/hda
> and send me the created "vol_id.trace" file by private email, because
> it is pretty large.

Done.
-- 
Best regards,
karaluh

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Re: CD not recognised by udev

[Kay Sievers]

On 2/8/07, karaluh <karaluh@tlen.pl> wrote:
> Dnia środa 07 luty 2007, napisałeś:
> > Hmm, don't know why this isn't recognized. What udev version and what
> > distro is it?
>
> 093, Kubuntu Edgy.
>
> > Care to do:
> >   strace -o vol_id.trace -t -s100000 /lib/udev/vol_id --export /dev/hda
> > and send me the created "vol_id.trace" file by private email, because
> > it is pretty large.
>
> Done.
The trace contains:
  20:39:50 close(4)                       = 0
  20:39:50 setgroups32(0, [])             = -1 EPERM (Operation not permitted)
  20:39:50 close(3)                       = 0
  20:39:50 exit_group(3)

where setgroups() fails. Are you running the command as root?

Kay
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