iostat question

[hcclnoodles]

Hi there, can anybody help me to understand why on some of my solaris boxes when I type "iostat -En" (as root) it just returns to the next prompt giving me no output at all ? however if I type just "iostat" it gives me the expected single line output ?? heres a snippet ...


# iostat
tty cmdk0 cmdk1 cpu
tin tout kps tps serv kps tps serv us sy wt id
0 1 55 6 1 1768 192 1 7 3 0 89
#
#iostat -En
#
#


Any help would be greatly appreciated

 

[Annihilannic]

Are they SCSI disks in the system, or IDE? Maybe it can only report such stats for SCSI?

Annihilannic.

 

[hcclnoodles]

well, it normally comes back with the CDROM details as part of the output, and theyre invariably IDE so it definately reports IDE as well

im baffled

 

[Annihilannic]

Do they appear in netstat -k? Usually you will see a paragraphs like this for each disk:

[tt]ssd137,err:
Soft Errors 0 Hard Errors 3 Transport Errors 0 Vendor 1397047623
Product 1398027063 Revision 808793409 Serial No 808793141 RPM 10025 Heads 24 Size 17 385613824
Media Error 0 Device Not Ready 0 No Device 3 Recoverable 0
Illegal Request 0 Predictive Failure Analysis 0[/tt]

Annihilannic.

 

[djr111]

what OS are you running,

I know there is an issue with 2.6 having to do with patch 106655-04. If this patch is installed then iostat -En will fail.

I have not heard of any other issues for recent versions.