Gongalong Posted October 9, 2019 Posted October 9, 2019 Hi All, One of our VMs is very (very!) slow, to the point where it's almost unresponsive. Task Manager doesn't show much if any CPU use though, and ditto for memory. This seemed to start yesterday when we had an issue with Veeam locking up one of the hosts. I have rebooted the hosts, and removed any checkpoints, rebooted the affected VM 3 times, but it still has the issue. What else can I do to try and troubleshoot? I'm assuming I might be able to get it into safe mode (the server itself is 2012 R2, but the hosts are 2019). Thanks
Jcx500 Posted October 9, 2019 Posted October 9, 2019 We had this when one of our drives failed on our host 1
bald_pig Posted October 9, 2019 Posted October 9, 2019 Have you checked the disk usage? Could be a failing drive slowing everything down? 1
Jawloms Posted October 9, 2019 Posted October 9, 2019 Task Manager doesn't show much if any CPU use though, and ditto for memory. Is this on the VM or the host? 1
Gongalong Posted October 9, 2019 Author Posted October 9, 2019 @bald_pig + @Jcx500 This is one of around 20 VMs on a RAID'd SAN, and all the other VMs are fine. Never say never, but seems unlikely. Is this on the VM or the host? VM. I've managed to get Task Manager to open, but can't get anything in Administrative Tools to open e.g. Services.
bald_pig Posted October 9, 2019 Posted October 9, 2019 I'd be trying to get to resource manager to see what's happening at this point. 1
Gongalong Posted October 9, 2019 Author Posted October 9, 2019 I've managed to get Services to open after a few attempts, so will try Resource Monitor. Presumably connected, I can't get the Windows Update service to start.
Gongalong Posted October 9, 2019 Author Posted October 9, 2019 No, both the hosting volume, and the VM itself have plenty of disk space. Still trying to get to Resource Monitor. Can't even get Administrative Tools to open now...
bald_pig Posted October 9, 2019 Posted October 9, 2019 No, both the hosting volume, and the VM itself have plenty of disk space. Still trying to get to Resource Monitor. Can't even get Administrative Tools to open now... If the host storage runs out of space then all the vm's stored there pause (Don't ask me how I know!) 1
Jcx500 Posted October 9, 2019 Posted October 9, 2019 Host Server got the latest firmware and os updates? 1
Gongalong Posted October 9, 2019 Author Posted October 9, 2019 If the host storage runs out of space then all the vm's stored there pause (Don't ask me how I know!) Ha! I know as well. Our earlier cluster was built by a consultancy that set all the disks to dynamic. Bad idea! Host Server got the latest firmware and os updates? Definitely the latest firmware, as the hosts were updated recently to 2019, and that was done as part of the update. OS updates I can check this evening. I've contacted the consultancy that support it and they've said "server is having a lot of issues crashing when running explorer.exe. I have noticed that other software runs much better. My recommendation would be to restore the server back to a time it was working better or alternatively to rebuild the VM." So this evening I'll restore to a backup from a couple of days ago. The problem with rebuilding is that it runs a license server that will probably be very tedious to get a new key for, assuming we can get one at all (Sibelius software).
robyholmes Posted October 9, 2019 Posted October 9, 2019 Ha! I know as well. Our earlier cluster was built by a consultancy that set all the disks to dynamic. Bad idea! Definitely the latest firmware, as the hosts were updated recently to 2019, and that was done as part of the update. OS updates I can check this evening. I've contacted the consultancy that support it and they've said "server is having a lot of issues crashing when running explorer.exe. I have noticed that other software runs much better. My recommendation would be to restore the server back to a time it was working better or alternatively to rebuild the VM." So this evening I'll restore to a backup from a couple of days ago. The problem with rebuilding is that it runs a license server that will probably be very tedious to get a new key for, assuming we can get one at all (Sibelius software). Could you export the VM to a Windows 10 PC which can act as a Hyper-V host? If it boots up and runs smoothly then it would point to a Host to VM issue, rather than the VM itself. 1
Gongalong Posted October 10, 2019 Author Posted October 10, 2019 Restored to last Friday's backup - as far back as it goes - and the server is at least useable. Sort of. I can't seem to uninstall anything. The Windows Update service won't start. The only good new is that there's just one license server running on it, although it remains to be seen how easy it is to move that elsewhere.
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