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Groups > comp.os.linux.hardware > #933
| From | Bit Twister <BitTwister@mouse-potato.com> |
|---|---|
| Newsgroups | comp.os.linux.hardware |
| Subject | Re: CDROM drive by UUID in fstab |
| Date | 2011-12-23 23:31 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <slrnjfa3pv.ab3.BitTwister@wb.home.test> (permalink) |
| References | <877h1pwti1.fsf@engels.HistoricalMaterialism.info> <op.v6u83nhwa3w0dxdave@hodgins.homeip.net> <8739ccwqif.fsf@engels.HistoricalMaterialism.info> <j1pcs8-dv9.ln1@lat.localnet> <87ty4rv8sg.fsf@engels.HistoricalMaterialism.info> |
On Fri, 23 Dec 2011 06:15:11 -0500, Haines Brown wrote:
> I see the difference but am too ignorant to know what to make of
> it. What is the "path" to? What do the end numbers refer to?
One is the hardware bus id, the other the scsi channel used by the
system to channel data to the device. What you are interested in is
the last two digits of the scsi id to identify which device you want
associated with what SYMLINK and what the symlink will be.
Here look at my two devices. Memorex is read/writer and ASUS is reader.
# grep CD-ROM /var/log/messages
Dec 23 16:58:47 localhost kernel: scsi 3:0:0:0: CD-ROM Memorex DVD+-RAM
Dec 23 16:58:47 localhost kernel: scsi 3:0:1:0: CD-ROM ASUS DVD-E616A
My udev rules snippet:
ENV{ID_PATH}=="pci-0000:00:14.1-scsi-1:0:0:0", SYMLINK+="dvd",
ENV{ID_PATH}=="pci-0000:00:14.1-scsi-1:0:0:0", SYMLINK+="dvdrw",
ENV{ID_PATH}=="pci-0000:00:14.1-scsi-1:0:1:0", SYMLINK+="dvd1",
No idea why messages has 3:0:x:x and rules has 1:0:x:x
the results are
# cd /dev
# ls -al | grep dvd
lrwxrwxrwx 1 root root 3 Dec 23 11:32 dvd -> sr0
lrwxrwxrwx 1 root root 3 Dec 23 11:32 dvdrw -> sr0
lrwxrwxrwx 1 root root 3 Dec 23 11:32 dvd1 -> sr1
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CDROM drive by UUID in fstab Haines Brown <haines@HistoricalMaterialism.info> - 2011-12-21 15:37 -0500
Re: CDROM drive by UUID in fstab Bit Twister <BitTwister@mouse-potato.com> - 2011-12-21 21:49 +0000
Re: CDROM drive by UUID in fstab J G Miller <miller@yoyo.ORG> - 2011-12-21 23:20 +0000
Re: CDROM drive by UUID in fstab "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2011-12-21 20:00 -0500
Re: CDROM drive by UUID in fstab Haines Brown <haines@HistoricalMaterialism.info> - 2011-12-22 10:54 -0500
Re: CDROM drive by UUID in fstab J G Miller <miller@yoyo.ORG> - 2011-12-22 18:08 +0000
Re: CDROM drive by UUID in fstab Haines Brown <haines@HistoricalMaterialism.info> - 2011-12-22 20:03 -0500
Re: CDROM drive by UUID in fstab Bill Marcum <bill@lat.localnet> - 2011-12-22 17:54 -0500
Re: CDROM drive by UUID in fstab Haines Brown <haines@HistoricalMaterialism.info> - 2011-12-23 06:15 -0500
Re: CDROM drive by UUID in fstab Bit Twister <BitTwister@mouse-potato.com> - 2011-12-23 23:31 +0000
Re: CDROM drive by UUID in fstab "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2011-12-23 22:37 -0500
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