[ovirt-users] single server, self hosted engine on host, one vm wont start

I'm not an expert with ovirt by any means, I've been running it for about 1.5 years coming from Xen. I have a Vm with 16TiB of storage that will not boot, it has some snapshots that wont remove. The web gui says it finished removing the last snapshot, but I don't think it actually did (took it about 50 hours).... I have no idea what is wrong with the vm that wont boot, it just says it's starting and never actually starts. Eventually I'll get a message that it failed to start. The boot drive of that vm is 16GB. I removed any snapshots from it and was able to clone it to a new disk, make a new vm and attach that disk to the new vm... booted fine. Now, the storage disk is what I really need working, but I do not have enough space to clone it and I cannot unattach it from the flakey vm since it has snapshots... and it seemingly won't remove the snapshots. Right now, I think its actually still maybe attempting to remove the snapshot? in top, I see qemu-img pulling all of one core at about 100%. unfortunately its very very slow because it's only using one core (of 16). This seemed to be a thing, AFAIK, when removing/merging snapshots in that it will only run single threaded... if it takes a while I don't care, I just want to know what's going on. I can't find any logs to look at that tell me that a snapshot removal or merge is ongoing or ever happened. I cannot find any logs that ever stated the progress of any such merge either. Any pointers there? Also, my backup machine died about 2 weeks ago taking its raid 5 with it... of course... I've been busy at work and figured I'd fix or rebuild it in a couple of weeks... so I don't have a good recent backup of my data on this vm, which is why I'm trying to get it to boot up again.