T. Horsnell wrote: >> T. Horsnell wrote: >>> FC6 - kernel 2.6.18-1.2798.fc6 - udev-095-14 >>> >>> I'm trying to develop some rules to give me device-name >>> persistence on my SCSI disks. I have a couple of test rules: >>> >>> BUS=="scsi", PROGRAM="/sbin/scsi_id -g -u" >>> RESULT=="20004cffffe0e0976", NAME="dsk0_%n", OWNER="root", GROUP="root", MODE="0700" >>> RESULT=="SSEAGATE_ST336807LC_3KT0CTTM00007530YTR2", NAME="dsk1_%n", OWNER="root", GROUP="root", MODE="0700" >>> >>> With these rules disabled, I get: >>> >> <-------------[ SNIP ]---------------------------> >> >> >>> Why have I got both sd devices and dsk devices? >>> And what is the second line? >>> Why have I got an entry: >>> crw------- 1 root root 21, 0 Nov 28 11:45 /dev/dsk0_0 >>> >>> This looks like a generic device, but if so, why only one? >>> And where are the normal sg devices? >>> >>> >> <-------------[ SNIP ]---------------------------> >> >>> >>> Is this all as expected? >>> Am I going to be screwed later on if I need to do something >>> that requires a generic SCSI device for a particular disk? >>> Why do I still get /dev/sd* entries? >>> Any clues anyone? >>> >>> Cheers, >>> Terry. >>> >>> >> Unless you use OPTIONS="last_rule" in your rule, both your rule and >> the default rule will be used. So you will end up with both sets of >> device entries. >> >> Now, as for the order problem, you may need to change the program >>from "/sbin/scsi_id -g -u" to "/sbin/scsi_id -d %N -s %p" or >> "/sbin/scsi_id -d %N -s %p -g -u". What I suspect is happening is >> that scsi_id is not returning what you expect. From the scsi_id man >> page: >> >> scsi_id is one of the tools used in the "Linux Persistent >> Device Names" scheme that creates persistent device links in >> /dev/disk. It is called with the -x option which will print all >> values in a defined format to let udev import it into its own >> environment for later event processing. >> >> An example custom udev rule using scsi_id, that will name a block >> device and any partitions for the device matching the scsi_id output >> of 312345: >> >> BUS=="scsi", PROGRAM=="/sbin/scsi_id -d %N -s %p", RESULT=="312345", >> NAME="disk%n" >> > > Thanks for this advice Mikkel, but so far it doesnt make any difference. > Here's my modified ruleset: > > BUS=="scsi", PROGRAM="/sbin/scsi_id -d %N -s %p -g -u" > RESULT=="20004cffffe0e0976", NAME="dsk0_%n", OWNER="root", GROUP="root", MODE="0700", OPTIONS="last_rule" > RESULT=="SSEAGATE_ST336807LC_3KT0CTTM00007530YTR2", NAME="dsk1_%n", OWNER="root", GROUP="root", MODE="0700", OPTI$ > > And here's the results: > (There is actually a small difference. I now dont have a block-device > for dsk0, partition 1. /dev/disk0_1 has become a character device.) > Where did you put your rules? If the file with your rules comes after the default rules, then both sets of rules will get used. I am not sure why the first partition is being set as a character device. It doesn't make sense, especially with /dev/sda1 correctly created as a block device. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
