ESXi, SPP, sut, The ramdisk 'sut-tmp' is full.

[pirx]

I updated many Proliant hosts to latest ESXi 8 release 8.0 U3f + latest HPE Vendor AddOns (803.0.0.12.1.0-11) + latest Gen10/11 SPP firmware (2025-05). Now I'm getting errors regarding full ramdisk.

# vdf
...
sut-tmp                 256000    256000         0 100% --

# du -sh /opt/sut/tmp/*
...
235.6M  /opt/sut/tmp/libhpsrv.debug_1.log

...

I deleted the file an restarted services but the ramdisk starts filling up again. This is not isolated to a single host or cluster, it seems to affect all HPE hosts now.

I could not find a HPE advisory sut is on latest version. What is a bit strange is that vLCM shows Integrated Smart Update Tool as version 800.6.1.0.37 - Build 0 overwriting 800.6.0.0.37 - Build 0. But I can find any reference to version 800.6.1.0.37 anywhere. Neiterh in HPE SPP release notes, not in HPE Vendor AddOn package.

Any ideas, anyone experiencing the same? Opening a ticket will most probably result in a ping - pong between HPE and VMware support.

[shiva_jr]

Hi @pirx , 
    The folder /opt/sut/tmp/ will store the temporary files of ESXi and application, plug-ins updates etc.  I believe, no harm in deleting the content. 
    Esxi command systemd-tmpfiles-clean may help in this.  After clean up of temp files, if possible you can reboot the Esxi once.
Regards,
Shiva_jr

[pirx]

@shiva_jr 

rebooting several hundered ESXi hosts daily is no option. This debug log file fills fast since last HPE Addon updates

[Rajaram02]

Hi Pirx,

Workaround
To mitigate the issue, you can temporarily stop SUT and clear the log file:

chkconfig sut off
chkconfig --list
echo -n > /opt/sut/tmp/libhpsrv.debug_1.log

Replace or downgrade the iSUT VIB to:
Version: 800.6.0.0.37-0
The HPE ProLiant Custom Image for ESXi 8.0 U3 includes this version by default:
VMware-ESXi-8.0.3-24674464-HPE-803.0.0.12.1.0.11-apr2025.iso
Included VIB: sutComponent--800.6.0.0.37-0

You can download the correct iSUT VIB here:
Download iSUT from https://www.hpe.com/servers/sut
https://downloads.hpe.com/pub/softlib2/software1/component-vmware/p434990663/v258265/cp064330.zip
HPE_bootbank_sut_800.6.0.0.37-1OEM.802.0.0.22380479.vib

To uninstall a VIB file from an ESXi host:   
esxcli software vib remove -n sut

Let us know if you’d like assistance with the downgrade process or help gathering further logs.