On 28/12/2014 16:03, [email protected] (Marco d'Itri) wrote:
> Control: severity -1 wishlist
>
> On Dec 28, Vincent Danjean <[email protected]> wrote:
>
>> This is a pity, but, if this is really the case, you can at least document
>> the situation (hence the reopen). As said initially,
> Please send a patch.
To add into the README.Debian (for example, or another specific file):
**************************************************************
Since jessie, udev does not provide persistent name for CD/DVD readers/
writers (see #655924 for more details). This is not a problem with one
CD/DVD reader/writer (as it will automaticcaly be linked to /dev/cdrom,
/dev/dvd, ...) but it is with more than one hardware. Moreover, in the
latter case, the symlinks (/dev/cdrom, /dev/dvd, ...) can change
each time a CD/DVD is inserted into one reader/writer (as reported in
#774080), even while they are used!
To come back to persistent names, old wheezy users can change their
/etc/udev/rules.d/70-persistent-cd.rules to use ID_SERIAL instead
of ID_PATH. And new jessie installation can manually wrote such a
file. As an example, to be adapted to your hardware, here is
such a file:
==================================
# DVD-ROM_GD-7500 (pci-0000:03:05.0-scsi-0:0:0:0)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="HITACHI_DVD-ROM_GD-7500", SYMLINK+="cdrom", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="HITACHI_DVD-ROM_GD-7500", SYMLINK+="dvd", ENV{GENERATED}="1"
# DRW-1814BL (pci-0000:03:05.0-scsi-0:0:1:0)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="ASUS_DRW-1814BL",
SYMLINK+="cdrom1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="ASUS_DRW-1814BL",
SYMLINK+="cdrw1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="ASUS_DRW-1814BL",
SYMLINK+="dvd1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="ASUS_DRW-1814BL",
SYMLINK+="dvdrw1", ENV{GENERATED}="1"
==================================
The identifier for ID_SERIAL (or other way to identify the hardware)
can be found by running:
# udevadm info --query=all --name=/dev/sr0
# udevadm info --query=all --name=/dev/sr1
...
And, once these new udev rules are in place, they can immediately be
taken into account (without rebooting) by running:
# udevadm trigger
**************************************************************
A test for several /dev/sr* file at config time that would display
a debconf notice pointing on this documentation would probably also
be a very good thing.
Regards,
Vincent
--
Vincent Danjean GPG key ID 0xD17897FA [email protected]
GPG key fingerprint: 621E 3509 654D D77C 43F5 CA4A F6AE F2AF D178 97FA
Unofficial pkgs: http://moais.imag.fr/membres/vincent.danjean/deb.html
APT repo: deb http://people.debian.org/~vdanjean/debian unstable main
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