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On 06/25/2011 03:32 PM, Alexey Mishustin wrote: |
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> Hi. |
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> |
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> After updating udev the links /dev/cdrom, /dev/dvd etc disappeared. There |
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> are four /dev/sgX but there is no /dev/srX at all. No hdX, all sdX are |
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> hard drives. So, I can't mount any cd or dvd. |
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> |
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> My drive is IDE (Pioneer). |
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|
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I assume it's connected to a PATA disk controller like my dvd player is? |
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|
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#lspci -k [output edited] |
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00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) |
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Subsystem: VIA Technologies, Inc. VT82C586/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE |
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Kernel driver in use: pata_via |
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|
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> # dmesg | grep sg |
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> msgmni has been set to 1759 |
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> Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) |
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> sd 0:0:0:0: Attached scsi generic sg0 type 0 |
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> sd 0:0:1:0: Attached scsi generic sg1 type 0 |
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> sd 2:0:0:0: Attached scsi generic sg2 type 0 |
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> sd 3:0:0:0: Attached scsi generic sg3 type 0 |
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|
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Surprise, I also have sg* devices I didn't know about: |
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|
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#dmesg | grep -i scsi |
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Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) |
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scsi0 : sata_promise |
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scsi1 : sata_promise |
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scsi2 : sata_promise |
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scsi3 : pata_via |
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scsi4 : pata_via <----- this is the dvdrom, on my old PATA controller |
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scsi 0:0:0:0: Direct-Access ATA Maxtor 6Y080M0 YAR5 PQ: 0 ANSI: 5 |
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sd 0:0:0:0: [sda] Attached SCSI disk |
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scsi 3:0:0:0: Direct-Access ATA Maxtor 7Y250P0 YAR4 PQ: 0 ANSI: 5 |
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sd 3:0:0:0: [sdb] Attached SCSI disk |
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scsi 4:0:0:0: CD-ROM ATAPI iHDP118 4 GL05 PQ: 0 ANSI: 5 |
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sd 0:0:0:0: Attached scsi generic sg0 type 0 |
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sd 3:0:0:0: Attached scsi generic sg1 type 0 |
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scsi 4:0:0:0: Attached scsi generic sg2 type 5 <----- the dvd is sg2 |
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sr0: scsi3-mmc drive: 48x/48x cd/rw xa/form2 cdda tray |
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sr 4:0:0:0: Attached scsi CD-ROM sr0 |
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|
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#ls -l /dev/sg* |
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crw-rw---- 1 root disk 21, 0 Jun 26 04:50 /dev/sg0 |
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crw-rw---- 1 root disk 21, 1 Jun 26 04:50 /dev/sg1 |
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crw-rw---- 1 root cdrom 21, 2 Jun 26 04:50 /dev/sg2 <----- sg2 again |
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crw-rw---- 1 root disk 21, 3 Jun 26 04:50 /dev/sg3 |
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crw-rw---- 1 root disk 21, 4 Jun 26 04:50 /dev/sg4 |
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|
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I'm trying to separate kernel device support problems from udev problems, as |
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you can see. |
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|
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#cat /etc/udev/rules.d/70-persistent-cd.rules |
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# This file was automatically generated by the /lib/udev/write_cd_rules |
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# program, run by the cd-aliases-generator.rules rules file. |
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# |
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# You can modify it, as long as you keep each rule on a single |
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# line, and set the $GENERATED variable. |
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|
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# iHDP118_4 (pci-0000:00:11.1-scsi-1:0:0:0) |
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SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:11.1-scsi-1:0:0:0", SYMLINK+="cdrom", ENV{GENERATED}="1" |
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SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:11.1-scsi-1:0:0:0", SYMLINK+="dvd", ENV{GENERATED}="1" |
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|
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Note how the pci number matches the output of lspci -k. If the number doesn't match |
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your hardware then you should delete the 70-persistent-cd.rules file and reboot. |
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A new file will be generated during the reboot. |
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