Unknown file system path on Windows VMware Guests with 7.2.6.

[bwarren]

I installed 7.2.5 from scratch on CentOS Stream 10, no prior Zabbix version present.
I use VMware template to discover hosts and VMs.
For my Windows VMware Guests, and Mounted filesystem Discovery, I noticed that it seemed like only 1 disks free/total/used was being reported for every disk discover on a VM.
I upgraded to 7.2.6.
All of my Mounted filesystem discovery items now resulted in "Unknown file system path" on Windows VMs.
I checked the latest templates, and they appear to be the same.
I noticed that in 7.2.5 the FSNAME object was returning a value like C:\
Whereas in 7.2.6 it was returning C: with no \.

This is an example key:
vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},free]

I simply added the \ to it to get this working for now.
vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME}\,free]

Now all my disk items work.

I'm posting here in case anyone else is having this problem because I wasted way too much time on this. And you will absolutely hate life if your life if try to get AI to solve this for you.

[crmendoza]

I have this same issue with Zabbix 7.0.12 LTS on my Windows VM guests returning "Unknown file system path" for the following
Template = VMware or VMware FQDN
Parent items: VMware Guest
Discovered by: Mounted filesystem discovery
Name: Free disk space on [{#FSNAME}]
key: vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},free]
Name: Free disk space on [{#FSNAME}] (percentage)
Key: vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},pfree]
Name: Total disk space on [{#FSNAME}]
vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},total]
Name: Used disk space on [{#FSNAME}]
vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},used]

But, when I change the Template (can't change the item directly on the VM guest because it was Discovered by Mounted filesystem discovery and was greyed out) to {#FSNAME}\ the Windows VM guests' latest data is collected and now my Lunix VM guests' are now returning "Unknown file system path" because it is now trying the {#FSNAME}\ (i.e [/]\, [/var]\ ). How can I set the VMware Template to add the "" for Windows Mounted filesystem discovery and without it for Linux systems.

[crmendoza]

Here is a screenshot after changing {#FSNAME} to {#FSNAME}\, Now the Linux machine CRLSMONITOR01 is returning "Unknown file system path" and the Windows File server VST1FILES02 is gathering data (On the Free disk space on [{#FSNAME}], I did not bother changing the Name but the key is using {#FSNAME}\)

[M D]

There was a change in 7.0.11 that somehow somehow broke the discovery: https://github.com/zabbix/zabbix/com...5eaac524b0f96e
The change added a preprocessing step to strip \ at the end of the string.

const data = JSON.parse(value);

for (var i in data) {
  if (data[i]['{#FSNAME}'].endsWith('\\')) {
    data[i]['{#FSNAME}'] = data[i]['{#FSNAME}'].replace(/\\+$/, '');
  }
}

return JSON.stringify(data);

We have the same problem with our windows vms now. The disks are discovered, but the check is returning an error -> Unknown file system path.

[M D]

i double checked:
The item prototype is wrong.

vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},{#FSNAME},free]

As the preprocessing step removes all \ from #FSNAME, the created item will read

vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},c:,free]

but c: does not exists when vmware.vm.vfs.fs.size is executed. i created an item with

vmware.vm.vfs.fs.size[{$VMWARE.URL},{$VMWARE.VM.UUID},c:\,free]

and got a nice result.

But you cant just edit the item prototype to be {#FSNAME}\ because then you WILL brake the check for linux systems.

[M D]

Quickfix: Just remove the preprocessing step in discovery. All triggers and items will be created successfully.

[crmendoza]

Where do I find this preprocessing step in discovery? I can't find any preprocessing step in Zabbix 7.0.12 Data Collection -> All templates -> VMware -> Discovery list -> VMware VM discovery - Preprocessing Tab.

[crmendoza]

I also checked the following Item prototypes:
Free disk space on [{#FSNAME}] does not have any preprocessing.
Free disk space on [{#FSNAME}] (percentage) does not have any preprocessing.
Total disk space on [{#FSNAME}] Preprocessing = Discard unchanged with heartbeat
Used disk space on [{#FSNAME}] does not have any preprocessing.

[crmendoza]

I think I have this fixed for Zabbix 7.0.12 for both Windows and Linux. Let me know if this works for other versions.

I added preprocessing step JavaScript, Type of information Text

if (/^[A-Z]:$/.test(value)) {
return value + "\\";
} else {
return value;
}

to Mounted filesystem discovery Item prototypes
Free disk space on [{#FSNAME}]
Free disk space on [{#FSNAME}] (percentage)
Total disk space on [{#FSNAME}]
Used disk space on [{#FSNAME}]

[Zaaappe]

Thanks, it worked for 7.2.7

[crmendoza]

The fix is not working for all of the values for Windows, it only collects correctly for one value path and rest fail, but Linux servers all work. See attached screenshot. What do I need to do to preprocess the correct file path for Windows?

[crmendoza]

I was able to find and remove the preprocessing step in discovery rule VMware VM discovery. Everything is collected and all file systems paths are found.

[M D]

FYI, i openened a bug report at zabbix for this exactly case.

[aecardenas]

I think I have this fixed for Zabbix 7.0.12 for both Windows and Linux. Let me know if this works for other versions.

I added preprocessing step JavaScript, Type of information Text

if (/^[A-Z]:$/.test(value)) {
return value + "\\";
} else {
return value;
}

to Mounted filesystem discovery Item prototypes
Free disk space on [{#FSNAME}]
Free disk space on [{#FSNAME}] (percentage)
Total disk space on [{#FSNAME}]
Used disk space on [{#FSNAME}]

Thank you, it worked in 7.2.7 for me

The fix is not working for all of the values for Windows, it only collects correctly for one value path and rest fail, but Linux servers all work. See attached screenshot. What do I need to do to preprocess the correct file path for Windows?

The script works just fine, I think for the unknown values the update interval is 1H, try opening the specific item with the problem, clicking on execute now, then update, and you'll see that it shows the right value.

[anjoze]

I have the same problem.
When I open Item Preprocessing, the Preprocessing steps -> Add, is greyed out so I can't insert the script.
Any suggestion?

[M D]

You need to edit the template.

[anjoze]

Thanks for your help.
I've inserted the Javascript on this template parameters:


Then I open the Host/Items and I can confirm that the Javascript is on the four Items.
Like this:


I click on Execute now but nothing happens, still have the "Unknown file system path" error and no data on that fields.

[M D]

As i said, you need to delete the preprocessing script. Dont know how aecardenas got it to work.