CBRC cannot be hot-enabled on a disk unless the VM was powered-on with digest disks or cbrc.cache Enable was set
Unable to hot add source disk <disk_name>.vmdk, failing over to network mode
<timestamps> In(166) Hostd[2102278]: [Originator@6876 sub=Vmsvc.vm:/vmfs/volumes/<datastore>/<backup_proxy_or_app_VM_folder>/<backup_proxy_or_app_VM_name>.vmx opID=#### sid=### user=vpxuser:<domain>/<user>] Reconfigure failed: N3Vim5Fault20GenericVmConfigFault9ExceptionE(Fault cause: vim.fault.GenericVmConfigFault
<timestamps> In(166) Hostd[2102236]: --> )
<timestamps> In(166) Hostd[2102236]: --> [context]zKq7AVICAgAAAKckdwEWaG9zdGQAAOPJR2xpYnZtYWNvcmUuc28AgU+BHQFsaWJ2aW0tdHlwZXMuc28AAWF26IKpShEBaG9zdGQAgt4iDAGCHDUMAYKlPgwBAqdU/AKNffwCx4b8AqyN/AIKc/gCOkP5Ar9R+QJlVPmBMAoWAQK1lWIAHtssAOD/LAA7UFIDUngAbGlicHRocmVhZC5zby4wAAQ/Ug9saWJjLnNvLjYA[/context]
<timestamps> Wa(164) Hostd[2102278]: [Originator@6876 sub=Vmsvc.vm:/vmfs/volumes/<datastore>/<backup_proxy_or_app_VM_folder>/<backup_proxy_or_app_VM_name>.vmx opID=#### sid=### user=vpxuser:<domain>/<user>] Exception thrown during reconfigure: (vim.vm.ConfigSpec) {
<timestamps> Wa(164) Hostd[2102236]: --> createDate = "<timestamp>",
<timestamps> Wa(164) Hostd[2102236]: --> files = (vim.vm.FileInfo) {
<timestamps> Wa(164) Hostd[2102236]: --> vmPathName = "[]/vmfs/volumes/<datastore>/<backup_proxy_or_app_VM_folder>/<backup_proxy_or_app_VM_name>.vmx",
<timestamps> Wa(164) Hostd[2102236]: --> },
<timestamps> Wa(164) Hostd[2102236]: --> deviceChange = (vim.vm.device.VirtualDeviceSpec) [
<timestamps> Wa(164) Hostd[2102236]: --> (vim.vm.device.VirtualDeviceSpec) {
<timestamps> Wa(164) Hostd[2102236]: --> operation = "add",
<timestamps> Wa(164) Hostd[2102236]: --> device = (vim.vm.device.VirtualDisk) {
<timestamps> Wa(164) Hostd[2102236]: --> key = 0,
<timestamps> Wa(164) Hostd[2102236]: --> backing = (vim.vm.device.VirtualDisk.FlatVer2BackingInfo) {
<timestamps> Wa(164) Hostd[2102236]: --> fileName = "[]/vmfs/volumes/<datastore>/<backed_up_VM>/<VM_name>.vmdk",
<timestamps> Wa(164) Hostd[2102236]: --> diskMode = "independent_nonpersistent",
<timestamps> Wa(164) Hostd[2102236]: --> },
<timestamps> Wa(164) Hostd[2102236]: --> connectable = (vim.vm.device.VirtualDevice.ConnectInfo) {
<timestamps> Wa(164) Hostd[2102236]: --> startConnected = true,
<timestamps> Wa(164) Hostd[2102236]: --> allowGuestControl = false,
<timestamps> Wa(164) Hostd[2102236]: --> connected = true,
<timestamps> Wa(164) Hostd[2102236]: --> },
<timestamps> Wa(164) Hostd[2102236]: --> controllerKey = 1000,
<timestamps> Wa(164) Hostd[2102236]: --> unitNumber = 2,
<timestamps> Wa(164) Hostd[2102236]: --> capacityInKB = 0,
<timestamps> Wa(164) Hostd[2102236]: --> },
<timestamps> Wa(164) Hostd[2102236]: --> }
<timestamps> Wa(164) Hostd[2102236]: --> ],
<timestamps> Wa(164) Hostd[2102236]: --> }
<timestamps> Wa(164) Hostd[2102236]: --> N3Vim5Fault20GenericVmConfigFault9ExceptionE(Fault cause: vim.fault.GenericVmConfigFault
<timestamps> Wa(164) Hostd[2102236]: --> )
<timestamps> Wa(164) Hostd[2102236]: --> [context]zKq7AVICAgAAAKckdwEWaG9zdGQAAOPJR2xpYnZtYWNvcmUuc28AgU+BHQFsaWJ2aW0tdHlwZXMuc28AAWF26IKpShEBaG9zdGQAgt4iDAGCHDUMAYKlPgwBAqdU/AKNffwCx4b8AqyN/AIKc/gCOkP5Ar9R+QJlVPmBMAoWAQK1lWIAHtssAOD/LAA7UFIDUngAbGlicHRocmVhZC5zby4wAAQ/Ug9saWJjLnNvLjYA[/context]
VMware vSphere ESXi 8.0.3
vSphere 8.0 Update 3 has introduced a change to the CBRC behavior.
To reduce memory consumption for the CBRC filter, from this version on hot-adding CBRC-enabled (digest) disks will only be allowed if the target VM already has a digest disk attached, or if CBRC is explicitly enabled for the VM.
To solve this problem, apply the following steps:
cbrc.cacheEnable = "TRUE"