Adding Hard Disks to Older SPARC systems

On some older SPARC systems, like ours, if you add disks to the system, it won’t automatically detect the drives. For instance, we have added drives via a StorEdge external drive box. If we look at the output of dmesg:

# dmesg | grep sd
Dec 20 08:01:33 srv-50 scsi: [ID 193665 kern.info] sd0 at fas0: target 0 lun 0
Dec 20 08:01:33 srv-50 genunix: [ID 936769 kern.info] sd0 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@0,0
Dec 20 08:01:33 srv-50 scsi: [ID 193665 kern.info] sd1 at fas0: target 1 lun 0
Dec 20 08:01:33 srv-50 genunix: [ID 936769 kern.info] sd1 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@1,0
Dec 20 08:01:34 srv-50 scsi: [ID 193665 kern.info] sd6 at fas0: target 6 lun 0
Dec 20 08:01:34 srv-50 genunix: [ID 936769 kern.info] sd6 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@6,0
Dec 20 08:01:34 srv-50 scsi: [ID 193665 kern.info] sd8 at fas0: target 9 lun 0
Dec 20 08:01:34 srv-50 genunix: [ID 936769 kern.info] sd8 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@9,0
Dec 20 08:01:34 srv-50 scsi: [ID 193665 kern.info] sd9 at fas0: target a lun 0
Dec 20 08:01:34 srv-50 genunix: [ID 936769 kern.info] sd9 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@a,0
Dec 20 08:01:34 srv-50 scsi: [ID 193665 kern.info] sd10 at fas0: target b lun 0
Dec 20 08:01:34 srv-50 genunix: [ID 936769 kern.info] sd10 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@b,0
Dec 20 08:01:34 srv-50 scsi: [ID 193665 kern.info] sd11 at fas0: target c lun 0
Dec 20 08:01:34 srv-50 genunix: [ID 936769 kern.info] sd11 is 
/sbus@1f,0/SUNW,fas@e,8800000/sd@c,0

The drives are all there. But, when we look for the drives with format:

# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0t0d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@0,0
1. c0t1d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@1,0
Specify disk (enter its number): 

Hey, those aren’t all of my drives!!! The trick is to tell Solaris to redetect the new hardware. To detect the drives:

# touch /reconfigure

reboot:

# reboot

After the reboot, we see our drives:

# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0t0d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@0,0
1. c0t1d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@1,0
2. c0t9d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@9,0
3. c0t10d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@a,0
4. c0t11d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@b,0
5. c0t12d0 
/sbus@1f,0/SUNW,fas@e,8800000/sd@c,0
Specify disk (enter its number): 

Happiness!