How to match an sd number to a lun

Asset ID:	1-71-1011799.1
Update Date:	2010-08-10
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Solution Type Technical Instruction Sure

Solution 1011799.1 : How to match an sd number to a lun

Related Items


Sun Storage A3500 SCSI Array
 Sun Storage A3500 FC Array

Related Categories


GCS>Sun Microsystems>Storage - Disk>Modular Disk - Other

PreviouslyPublishedAs
216165

Description
How to match an sd number to a lun.

Steps to Follow
When using commands such as 'sar -d' or 'iostat', the naming of the
devices is based on sd numbers which must be translated into
cxtxdx numbers to be useful. When LUNs are involved, the translation
process differs.

For this example, we will translate an sd number of 97 into it's
cxtxdx number.
# grep 97 /etc/path_to_inst
"/sbus@3,0/SUNW,fas@3,8800000/sd@5,5" 197 "sd"
"/sbus@7,0/SUNW,fas@3,8800000/rdriver@3,5" 197 "rdriver"
"/sbus@7,0/QLGC,isp@2,10000/rdriver@5,1" 97 "rdriver"
"/sbus@b,0/SUNW,fas@3,8800000/sd@3,6" 297 "sd"
"/sbus@2,0/QLGC,isp@2,10000/sd@5,3" 97 "sd" <--- USE THE STRING FROM THIS ENTRY
# cd /dev/osa/dev/dsk
# ls -l | grep /sbus@2,0/QLGC,isp@2,10000/sd@5,3
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s0 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:a
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s1 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:b
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s2 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:c
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s3 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:d
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s4 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:e
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s5 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:f
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s6 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:g
lrwxrwxrwx 1 root root 48 Aug 18 11:32 c1t5d3s7 ->
../../devices/sbus@2,0/QLGC,isp@2,10000/sd@5,3:h
This shows that sd97 corresponds to LUN c1t5d3.

Product
Sun StorageTek A3500 FC Array
Sun StorageTek A3500 Array

Previously Published As
17913

Change History
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Product_uuid
b648cdf0-efb8-4d4f-93d4-b17c1baf1935|Sun StorageTek A3500 FC Array
2a8022d4-0a18-11d6-8043-ee5a180fdb7f|Sun StorageTek A3500 Array

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