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Mick wrote: |
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> On Monday 07 Jan 2013 07:35:32 Dale wrote: |
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> |
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>> I think you misunderstand or I didn't make myself clear. I'm not saying |
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>> it was udev that did this. I am pretty sure it was the kernel. All |
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>> this happened when people with older IDE drives, myself included on my |
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>> old machine, had to switch to the new drivers and devices. Before the |
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>> change, old IDE drives and CD/DVD drives were given hd* devices and udev |
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>> made a link to that with /dev/cdrom or dvd or whatever for optical |
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>> devices which is what you seem to expect now. The reason udev did that |
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>> was for it to be consistent which I have no problem with . When the |
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>> kernel folks changed this, they also changed it from /dev/cdrom and |
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>> /dev/dvd to /dev/sr0. From my understanding, all optical devices such |
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>> as CD and DVD readers/burners are supposed to be sr0. I know k3b |
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>> updated theirs too. I seem to recall I had to run a unstable version |
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>> for a bit because the older version didn't have the code to see sr* |
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>> devices. |
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>> |
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>> I never said anything was broke, just that it was changed. There was |
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>> several things that was changed at about the same time that were related |
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>> and this was just one of them. Another was the change from /dev/hdXX to |
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>> /dev/sdXX for ALL hard drives. This change happened even if you was |
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>> using the old IDE drives. As I understand it, /dev/hdxx is no longer |
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>> supported on current kernels. All hard drives are /dev/sdxx and optical |
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>> drives are /dev/sr0(1,2,3,4 etc). |
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>> |
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>> Also, I didn't remove anything. It was changed by the kernel which also |
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>> lead to udev changing what it did. Again, as much as I dislike what |
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>> udev is planning, I never said udev did this one. I'm pretty sure this |
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>> was all started with the kernel devs. The udev folks just followed along. |
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>> |
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>> The biggest thing I recall is everyone with IDE drives having to update |
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>> the kernel config, edit fstab and grub or lilo before rebooting. This |
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>> was discussed on this list and I don't recall much fuss except for |
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>> having to change it and update everything. It was sort of a one time |
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>> thing and had a long term goal. All hard drives are sdxx and optical |
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>> devices are srx. All this happened when I was on my old rig which was |
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>> at least a few years ago. |
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>> |
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>> Does that make more sense now? |
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>> |
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>> Dale |
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>> |
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>> :-) :-) |
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> |
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> I think that you are conflating two issues which are separate in terms of |
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> chronology at least. Years ago we moved to libata and hdX changed to sdX. |
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> The udev confguration was updated at the time to link /dev/cd* and |
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/dev/dvd* |
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> to srX. |
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> |
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> More recently, the udev rules nomenclature changed. The udev |
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persistent-cd |
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> rules however was not changed. I moved it, remerged stable udev and |
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the file |
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> was not recreated. So something in udev has changed and it no longer |
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> generates the persistent-cd rules. |
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> |
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> |
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> BTW, pressing the touch sensitive button on the laptop to eject the CD |
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won't |
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> work, neither will typing eject in a terminal: |
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> |
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> $ eject |
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> eject: tried to use `/mnt/cdrom' as device name but it is no block device |
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> eject: unable to find or open device for: `cdrom' |
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> |
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> |
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> So, eject is still looking for cdrom ... |
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> |
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> Either all commands and legacy apps should update themselves, or I better |
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> follow Mark's suggestion? |
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According to what I found, both changes were done at the same time. |
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Link below is one place that I found saying both things were being |
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changed in the kernel at the same time. There are others but anyway: |
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http://lkml.indiana.edu/hypermail/linux/kernel/0608.1/0806.html |
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There may have been other changes more recent in udev but if so, I |
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missed them since this changed for me, and according to the list others |
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too, years ago. I was on my old rig so it had to be several years ago |
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since I have had my new rig a couple years and never had to deal with it |
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during the install of Gentoo on it. |
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I do think it's helpful for some to have a consistent link like cdrom or |
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dvd. It appears someone else thinks people that find it helpful need to |
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add their own rule. Either way, it can be made to work. |
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Just trying to provide info based on my search results. |
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Dale |
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:-) :-) |
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|
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-- |
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I am only responsible for what I said ... Not for what you understood or |
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how you interpreted my words! |
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