Re: udev cdrom_id rules prevent unmounted CD from spinning down

[Nick Bowler <nbowler@elliptictech.com>]

On 16:41 Fri 14 May     , Kay Sievers wrote:
> Does cdrom_id work as expected otherwise? What does:
>   /lib/udev/cdrom_id --debug /dev/sr0
> print?

Output from this command is appended.

> Does running cdrom_id spin up the drive?

No, the above does not cause the drive to spin up.

> There is a call to /sbin/blkid in:
>   /lib/udev/rules.d/60-persistent-storage.rules
> with:
>   KERNEL="sr*", IMPORT{program}="/sbin/blkid ...
> If you comment that out, does the issue go away?

I commented both of the following lines:

  KERNEL="sr*", ENV{ID_CDROM_MEDIA}="?*", ENV{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}="?*", IMPORT{program}="/sbin/blkid -o udev -p -u noraid -O $env{ID_CDROM_MEDIA_SESSION_LAST_OFFSET} $tempnode"
  KERNEL="sr*", ENV{ID_CDROM_MEDIA}="?*", ENV{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}="", IMPORT{program}="/sbin/blkid -o udev -p -u noraid $tempnode"

and the issue indeed goes away.

# /lib/udev/cdrom_id --debug /dev/sr0
main: probing: '/dev/sr0'
cd_inquiry: INQUIRY: [Optiarc ][DVD RW AD-7910S ][1.D2]
cd_profiles: GET CONFIGURATION: size of features buffer 0x0150
cd_profiles: GET CONFIGURATION: feature 'profiles', with 14 entries
feature_profiles: profile 0x2b dvd_plus_r_dl
feature_profiles: profile 0x1b dvd_plus_r
feature_profiles: profile 0x1a dvd_plus_rw
feature_profiles: profile 0x16 <ignored>
feature_profiles: profile 0x15 <ignored>
feature_profiles: profile 0x14 dvd_rw
feature_profiles: profile 0x13 dvd_rw
feature_profiles: profile 0x12 dvd_ram
feature_profiles: profile 0x11 <ignored>
feature_profiles: profile 0x10 dvd_rom
feature_profiles: profile 0x0a cd_rw
feature_profiles: profile 0x09 cd_r
feature_profiles: profile 0x08 cd_rom
feature_profiles: profile 0x02 <ignored>
cd_profiles: GET CONFIGURATION: feature 0x0001 <ignored>, with 0x08 bytes
cd_profiles: GET CONFIGURATION: feature 0x0002 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0003 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0004 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0010 <ignored>, with 0x08 bytes
cd_profiles: GET CONFIGURATION: feature 0x001d <ignored>, with 0x00 bytes
cd_profiles: GET CONFIGURATION: feature 0x001e <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x001f <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0020 <ignored>, with 0x0c bytes
cd_profiles: GET CONFIGURATION: feature 0x0021 <ignored>, with 0x08 bytes
cd_profiles: GET CONFIGURATION: feature 0x0023 <ignored>, with 0x08 bytes
cd_profiles: GET CONFIGURATION: feature 0x0024 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0026 <ignored>, with 0x00 bytes
cd_profiles: GET CONFIGURATION: feature 0x002a <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x002b <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x002c <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x002d <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x002e <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x002f <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0033 <ignored>, with 0x08 bytes
cd_profiles: GET CONFIGURATION: feature 0x0037 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x003b <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0100 <ignored>, with 0x00 bytes
cd_profiles: GET CONFIGURATION: feature 0x0103 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0105 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0106 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0107 <ignored>, with 0x04 bytes
cd_profiles: GET CONFIGURATION: feature 0x0108 <ignored>, with 0x0c bytes
cd_profiles: GET CONFIGURATION: feature 0x010a <ignored>, with 0x0c bytes
cd_profiles: current profile 0x11
cd_profiles: profile 0x11 media_dvd_r
cd_media_info: disk type 00
cd_media_toc: READ TOC: len: 20
cd_media_toc: track=1 info=0x4(data) start_block=0
cd_media_toc: last track 1 starts at block 0
ID_CDROM=1
ID_CDROM_CD=1
ID_CDROM_CD_R=1
ID_CDROM_CD_RW=1
ID_CDROM_DVD=1
ID_CDROM_DVD_R=1
ID_CDROM_DVD_RW=1
ID_CDROM_DVD_RAM=1
ID_CDROM_DVD_PLUS_R=1
ID_CDROM_DVD_PLUS_RW=1
ID_CDROM_DVD_PLUS_R_DL=1
ID_CDROM_MRW=1
ID_CDROM_MRW_W=1
ID_CDROM_MEDIA=1
ID_CDROM_MEDIA_DVD_R=1
ID_CDROM_MEDIA_STATE=appendable
ID_CDROM_MEDIA_SESSION_NEXT=2
ID_CDROM_MEDIA_SESSION_COUNT=2
ID_CDROM_MEDIA_TRACK_COUNT=2
ID_CDROM_MEDIA_TRACK_COUNT_DATA=1

-- 
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)