I am using esxi 6.5
because of some backup reason, which is quite a little long story and finally, I am fail to do the backup.
I finally found out, when I use "vmkfstools -d thin -i" command to clone a vmdk, it sometimes show error message below:
" Clone: 10% done.Failed to clone disk: The file specified is not a virtual disk (15). "
To make it very simple, I am just trying to clone a vmdk disk to another location using the following command:
[root@localhost:~] vmkfstools -d thin -i /vmfs/volumes/datastore1/vm1/vm1.vmdk /vmfs/volumes/datastore2/vm1/vm1.vmdk
Destination disk format: VMFS thin-provisioned
Cloning disk '/vmfs/volumes/datastore1/vm1/vm1.vmdk'...
Clone: 10% done.Failed to clone disk: The file specified is not a virtual disk (15).
[root@localhost:~] vmkfstools -d thin -i /vmfs/volumes/datastore1/vm1/vm1.vmdk /vmfs/volumes/datastore2/vm1/vm1.vmdk
Destination disk format: VMFS thin-provisioned
Cloning disk '/vmfs/volumes/datastore1/vm1/vm1.vmdk'...
Clone: 11% done.
(it keep on counting till then end if it is starting without problem.)
I am using the above command repeatedly and it sometimes show fail and sometimes start to clone without problem.
The vm machine is not running when I run this command.
The vm machine work actually good. I have shut down and turn on the machine several times and the machine always turn on successfully and run without problems.
I have try to clone the disk from datastore2 to datastore1 and the same result exists. Sometimes OK sometimes fail.
datastore1 is a raid 5 hdd group
datastore2 is a single 2tb hdd.
It don't seems like the hdds are having problem.
It also don't seems like the vmdk is corrupted as I can sometimes clone the vmdk successfully and the vmmachine can be turned on.
I have no way to do a schedule backup if I cannot settle this issue.
Can anyone help me to figure out this issue? Thanks