Disk consolidation of thin-disks consumes all storage

[Izuku]

I have a 5TB thin-provisioned disk which uses 1.32TB of storage and 4.75 uncommitted.  When a snapshot is deleted (which are small), it initiates a consolidation of the snapshot disk with the baseline.  This process of consolidation takes forever and tries to expand my thin disk to the full size of 5TB.  My storage array is not large enough to handle this and it ends up failing / crashing.  Any ideas on how to stop the consolidation from expanding my thin-provisioned disk like this?  I have 4.13TB of free storage.

I am able to stop the consolidation and then reshrink the flat file by doing a "vmkfstools -K".  Doing that along with cloning the disk and swapping it, has brought me back online.  But this is not a workable solution - I can't create / delete snapshots, I can't backup (as they create snapshots).  Help!

[harry89]

Hope this helps :

VMware Knowledge Base

[Izuku]

harry89​ The symptoms described are very similar.  I can't say if unmaps from SeSparse are the cause, but the resolution doesn't fit.  It is for a Windows Guest and I'm running Ubuntu Linux.  I have open-vm-tools installed on the guest.

[harry89]

Did you check on ubuntu /linux forums .. anything related to this

[Izuku]

harry89 I haven't found anything on the Linux forums or in general Google searches.  This looks like a host ESXi issue to me, more so than a guest issue.  I attached a log to my original post that might give more information.

On line 111: "I need 376 GB and I have 4.1 TB available". Then on line 142: "No space left, fail"