Parse Volume Status of RSTCLI using Powershell - powershell

Question

I'm trying to parse output from rstcli64 (Intel Rapid Storage Technology Command Line Interface) with powershell for use with Hyper-v 2012 bare metal server. The goal is to find any volumes or disks with a status that is not "normal" by returning $true for 'OK' or $false for anything other than normal or $null. The ultimate goal to is to create an alert for Icinga. When it's all done I'll be posting the working script. Here's where I'm at, and I may be going about this in completely the wrong way:
I start with rstcli64:
rstcli64 --information --volume
Which outputs:
--VOLUME INFORMATION--
Name: Volume0
Raid Level: 10
Size: 466 GB
StripeSize: 64 KB
Num Disks: 4
State: Normal
System: True
Initialized: False
Cache Policy: Off
--DISKS IN VOLUME: Volume0 --
ID: 0-0-0-0
Type: Disk
Disk Type: SATA
State: Normal
Size: 233 GB
Free Size: 0 GB
System Disk: False
Usage: Array member
Serial Number: WD-WCAT1F483065
Model: WDC WD2502ABYS-18B7A0
ID: 0-1-0-0
Type: Disk
Disk Type: SATA
State: Normal
Size: 233 GB
Free Size: 0 GB
System Disk: False
Usage: Array member
Serial Number: WD-WCAT1F468139
Model: WDC WD2502ABYS-18B7A0
ID: 0-2-0-0
Type: Disk
Disk Type: SATA
State: Normal
Size: 233 GB
Free Size: 0 GB
System Disk: False
Usage: Array member
Serial Number: WD-WCAT1H077856
Model: WDC WD2502ABYS-18B7A0
ID: 0-3-0-0
Type: Disk
Disk Type: SATA
State: Normal
Size: 233 GB
Free Size: 0 GB
System Disk: False
Usage: Array member
Serial Number: WD-WCAT1F522503
Model: WDC WD2502ABYS-18B7A0
rstcli64 :
+ CategoryInfo : NotSpecified: (:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
0
I'm interested in anywhere the 'State:' entry exits so I filter that out with Select-String, which I'm using like this, with this output:
rstcli64 --information --volume 2> Out-Null | select-string -Pattern "State:"
State: Normal
State: Normal
State: Normal
State: Normal
State: Normal
... and this is about as far as I've gotten. I need to find out how return $true if all of the "State:" fields -eq "Normal", and $false if either there is no output ($null I assume) or if there is any "State:" -ne "Normal".
Any help is much appreciated. Thank you.
EDIT: Thanks for the help! This is what I ended up using TheMadTechnician's logic in: http://baremetalwaveform.com/?p=311

Answer 1

Well that's easy enough to do from where you're at. Run a RegEx match or run a -like and see if there are any that -match or -like and look for 'Normal'. Get a count, if the total number of Status -gt 0 and that count -eq the matched count then you're all set.
$Status = rstcli64 --information --volume 2> Out-Null | select-string -Pattern "State:"
If(($status.count -gt 0) -and ($status.count -eq ($status|Where{$_ -match "Normal"}).count)){
"All is well"
}else{
"Stuff be broke!"
}

Answer 2

Another approach that will capture the counts of the states
$states = rstcli64 --information --volume 2> Out-Null | select-string -Pattern "State:"
$notNormalStates = $states | Select-String -Pattern "Normal" -NotMatch
if ($state.Count -gt 0 -and $notNormalStates.Count -eq 0){
Write-Host "Everything Ok"
} Else {
Write-Host "Something Wrong"
}
You could pipe the results of Select-String into Select-String again and spit out result that dont have "Normal". If you were just interested in the non normal state count you could use either of the following.
$notNormalCount = (rstcli64 --information --volume 2> Out-Null | select-string -Pattern "State:" | Select-String -Pattern "Normal" -NotMatch).Count
Also you could regex to just have one Select-String cmdlet
$notNormalCount = (rstcli64 --information --volume 2> Out-Null | Select-String -Pattern "State:\s+(?!.*Normal).*").Count
The regex would match "State:" followed by any whitespace followed by anything as long as its not "Normal" using a Negative Lookahead. Its worth noting that Regex is better designed to "match" things than to "not match" things.