Christopher Taylor wrote:
> I'm trying to set the group ownership of a specific harddrive so that
> it is accessible as a raw device inside a virtual machine. I think I
> have the correct rule but it doesn't appear to work:
>
> SUBSYSTEM=="block", PROGRAM="/lib/udev/scsi_id --whitelisted --export
> --page=0x80 --device=/dev/sdc | grep ^ID_SERIAL= | cut -f2 -d'='",
> RESULT="SATA_WDC_WD2002FYPS-_WD-WCAVY0######", GROUP="vmware"
RESULT== is what you need for this rule to work syntactically, I think.
= assigns; == tests.
However, this is still the wrong way to go about this. :-)
The way (I think) you should match this device is, let the existing udev
rules call scsi_id for you (since they will regardless, in order to
generate /dev/disk/by-* links), and match on their result.
So put the file containing this rule after 60-persistent-storage.rules
(start its name with 61 or higher), and change it to something like:
SUBSYSTEM=="block", ENV{ID_SERIAL}=="<whatever string>", GROUP="vmware"
Where <whatever string> is what's shown in the environment by e.g.
"udevadm test /block/sdX" (for whatever the correct sdX is at the
moment) when it runs scsi_id. (Or you can probably ask the udev
database somehow or other. You might even have the correct serial #
already...)
> Also, I have not successfully limited the rule by only the scsi serial
> id ... the /dev/sdc is still in there.
You could use $tempnode (or %N possibly?) for that, but I wouldn't
bother. Just go with the results of the previous run of scsi_id. :-)
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