Question

Some commands in Solaris (such as iostat) report disk related information using disk names such as sd0 or sdd2. Is there a consistent way to map these names back to the standard /dev/dsk/c?t?d?s? disk names in Solaris?

Edit: As Amit points out, iostat -n produces device names such as eg c0t0d0s0 instead of sd0. But how do I found out that sd0 actually is c0t0d0s0? I’m looking for something that produces a list like this:

 sd0=/dev/dsk/c0t0d0s0 ... sdd2=/dev/dsk/c1t0d0s4 ... 

Maybe I could run iostat twice (with and without -n) and then join up the results and hope that the number of lines and device sorting produced by iostat is identical between the two runs?

Answer 1

Following Amit’s idea to answer my own question, this is what I have come up with:

iostat -x|tail -n +3|awk '{print $1}'>/tmp/f0.txt.$$ iostat -nx|tail -n +3|awk '{print '/dev/dsk/'$11}'>/tmp/f1.txt.$$ paste -d= /tmp/f[01].txt.$$ rm /tmp/f[01].txt.$$ 

Running this on a Solaris 10 server gives the following output:

sd0=/dev/dsk/c0t0d0 sd1=/dev/dsk/c0t1d0 sd4=/dev/dsk/c0t4d0 sd6=/dev/dsk/c0t6d0 sd15=/dev/dsk/c1t0d0 sd16=/dev/dsk/c1t1d0 sd21=/dev/dsk/c1t6d0 ssd0=/dev/dsk/c2t1d0 ssd1=/dev/dsk/c3t5d0 ssd3=/dev/dsk/c3t6d0 ssd4=/dev/dsk/c3t22d0 ssd5=/dev/dsk/c3t20d0 ssd7=/dev/dsk/c3t21d0 ssd8=/dev/dsk/c3t2d0 ssd18=/dev/dsk/c3t3d0 ssd19=/dev/dsk/c3t4d0 ssd28=/dev/dsk/c3t0d0 ssd29=/dev/dsk/c3t18d0 ssd30=/dev/dsk/c3t17d0 ssd32=/dev/dsk/c3t16d0 ssd33=/dev/dsk/c3t19d0 ssd34=/dev/dsk/c3t1d0 

The solution is not very elegant (it’s not a one-liner), but it seems to work.