April 3, 20179 yr I have a bunch of Windows server VMS which are all based off a base VM backing file. That is I created a base Windows install configured how I like, then sys prepped it, shut it down and made it the base or backing file for all subsequent VMs. (using details in this blog post:- http://www.greenhills.co.uk/2013/03/24/cloning-vms-with-kvm.html) That way I only use the space for the basic Windows install once. I have recently started to have big issues with this though. It has worked fine for months but recently my VMS randomly will start up an error: - Booting from Hard Disk... Boot failed: not a bootable disk No bootable device. Once it does this it is broken completely, I have to restore or recreate it. I've tried partition repair etc, Windows repair etc but just doesn't work. If I restore my VM file from backup then it works fine again (for a while) Anyone else do this and noticed an issue?
April 3, 20179 yr Author Ran a emu-img check on the file and got this:- ... lots of these line:- ERROR OFLAG_COPIED data cluster: l2_entry=800000008ac00000 refcount=0 ERROR OFLAG_COPIED data cluster: l2_entry=800000008ad80000 refcount=0 ERROR OFLAG_COPIED data cluster: l2_entry=800000008ad90000 refcount=0 ERROR OFLAG_COPIED data cluster: l2_entry=800000008ada0000 refcount=0 2911 errors were found on the image. Data may be corrupted, or further writes to the image may corrupt it. 36022/1638400 = 2.20% allocated, 15.18% fragmented, 0.00% compressed clusters Image end offset: 2344484864
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