Leonid Podolny wrote:
Hi, list,
Provided that I have a host, channel, id and lun of the physical scsi disk,
what is a correct and portable way to know the /dev/sdX device name? I need the
solution to be portable between different 2.6 kernel releases.
The full story is this. We have a testing lab. All the computers are connected
to a FC switch, which in turn is connected to a rack of SCSI disks. All the
disks are visible to all the computers. After investigating a couple of woodoos
we found out that, say, /dev/sda on
one box does not necessarily point to the same physical disk as /dev/sda on
another one.
readlink /sys/bus/scsi/devices/0:0:0:0/block | cut -d / -f 8
Alternatively, cat /sys/bus/scsi/devices/0:0:0:0/block/dev will give you
the major/minor numbers of the relevant device. You can probably deduct
the rest yourself.
Shachar
--
Shachar Shemesh
Lingnu Open Source Consulting ltd.
http://www.lingnu.com/
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