Creating a vSAN Data Protection Group gives error : "Create protection group task failed. Check the vSAN data protection UI logs for details"
Article ID: 412552
Updated On:
Products
Issue/Introduction
Creating a vSAN Data Protection Group gives below error
Error reported in vCenter Client: "Create protection group task failed. Check the vSAN data protection UI logs for details"
Logs at VMware Snapshot Service appliance:
snap-service.log:
{"level":"info","timestamp":"202#-0#-10T19:21:01.883Z","C":"cluster_db/cluster_db.go:140","message":"Creating snapstore DB namespace","opID":"68c1cb29","cluster ":"domain-c#","filename ":"snapstoreDB"}
{"level":"error","timestamp":"202#-0#-10T19:21:01.949Z","C":"vcenter/file_manager.go:47","message":"Failed to create directory","opID":"68c1cb29","filename":"snapstoreDB","error":"ServerFaultCode: Cannot complete file creation operation.","S":"gitlab.eng.vmware.com/core-build/vsan_snapshot_service/pkg/server/vsphere/vcenter.Vcenter.CreateNamespaceDirectory\n\t/build/mts/rel
snap-service-ui.log
{"level":"info","timestamp":"202#-0#-10T19:21:03.515Z","C":"controller/LogsImpl.go:46","message":"WARN: [\"[MonitorTask]: task error: undefined\"]"}
{"level":"error","timestamp":"202#-0#-10T19:21:03.516Z","C":"controller/LogsImpl.go:48","message":"[\"[vSAN SM ERROR]: \",\"Create protection group task failed. Check the vSAN data protection UI logs for details.\"]","error":"UI error","S":"gitlab.eng.vmware.com/core-
Note: You can also run "vm-support" on "VMware Snapshot Service appliance" to collect log bundle for the vSAN Data protection appliance.
Logs at vCenter:
vpxd.log:
202#-0#-10T19:21:01.936Z info vpxd[27082] [Originator@6876 sub=vmomi.soapStub[27011] opID=snapservice-68c1cb29-32] SOAP request returned HTTP failure; <<io_obj p:0x00007f99f0119348, h:59, <UNIX ''>, <UNIX '/var/run/envoy-hgw/hgw-pipe'>>, /hgw/host-58100/vpxa>, method: CreateDirectory; code: 500(Internal Server Error); fault: (vim.fault.CannotCreateFile) {
--> faultCause = (vmodl.MethodFault) null,
--> faultMessage = (vmodl.LocalizableMessage) [
--> (vmodl.LocalizableMessage) {
--> key = "vob.vsanprovider.object.creation.failed",
--> arg = <unset>,
--> message = "Failed to create object."
--> },
--> (vmodl.LocalizableMessage) {
--> key = "vob.vsan.clomd.policy.invalid",
--> arg = <unset>,
--> message = "Invalid vSAN policy specified."
--> }
--> ],
--> file = "snapstoreDB (Cannot Create File)"
--> msg = "Received SOAP response fault from [<<io_obj p:0x00007f99f0119348, h:59, <UNIX ''>, <UNIX '/var/run/envoy-hgw/hgw-pipe'>>, /hgw/host-58100/vpxa>]: CreateDirectory
--> Received SOAP response fault from [<<io_obj p:0x000000ec2af26460, h:29, <TCP '127.0.0.1 : 16034'>, <TCP '127.0.0.1 : 8307'>>, /sdk>]: CreateDirectory
--> Cannot complete file creation operation."
--> }
Logs at ESXi:
clomd.log:
The error says the policy is invalid
--> (vmodl.LocalizableMessage) {
--> key = "vob.vsan.clomd.policy.invalid",
--> arg = <unset>,
--> message = "Invalid vSAN policy specified."
--> }
It is invalid because they have dedupe and compression enabled in the policy.
2025-09-10T19:21:01.920Z No(29) clomd[2099319]: [Originator@6876] CLOMLogConfigurationPolicy: Object size 273804165120 bytes with policy: (("stripeWidth" i1) ("cacheReservation" i0) ("proportionalCapacity" (i0 i100)) ("hostFailuresToTolerate" i1) ("forceProvisioning" i0) ("spbmProfileId" "a5ce23aa-bc1d-4159-8825-be6fcb4a0843") ("spbmProfileGenerationNumber" l+1) ("storageType" "Allflash") ("replicaPreference" "Capacity") ("iopsLimit" i0) ("checksumDisabled" i0) ("spbmProfileName" "READING - Optimal Datastore Default Policy - RAID5") ("datastoreSpaceEfficiency" "DedupAndCompression") ("dataAtRestEncryption" i0))
2025-09-10T19:21:01.920Z No(29) clomd[2099319]: [Originator@6876 opID=1804289442] CLOMProcessWorkItem: Op PLACEMENT starts:1804289442
2025-09-10T19:21:01.921Z Cr(26) clomd[2099319]: [Originator@6876 opID=1804289442] CLOMValidateAndUpdateTargetPolicy: Dedup policy is not supported on vSAN2 cluster
2025-09-10T19:21:01.921Z Cr(26) clomd[2099319]: [Originator@6876 opID=1804289442] CLOMConfigPreFlight: Failed to validate the target policy! Bad parameter
2025-09-10T19:21:01.921Z Cr(26) clomd[2099319]: [Originator@6876 opID=1804289442] CLOMGenerateNewConfig: Object placement pre-flight failed
2025-09-10T19:21:01.921Z Cr(26) clomd[2099319]: [Originator@6876 opID=1804289442] CLOM_Diagnose: Invalid vSAN policy specified.
2025-09-10T19:21:01.921Z Cr(26) clomd[2099319]: [Originator@6876 opID=1804289442] CLOMProcessWorkItem: Failed to generate configuration: Bad parameter
Environment
-
vSAN Express Storage Architecture
-
vSAN 8.0 Update 3 or later
-
VMware Snapshot Service appliance deployed on vCenter
Cause
The creation of vSAN Data Protection Group failed because the "vm storage policy" assigned to the VM has "DedupAndCompression" which is not supported in vSAN ESA
Refer : Unable to create Deduplication and Compression policies on ESA datastore
Resolution
Assign a policy to the VM that does not have "DedupAndCompression" enabled and try to re-create the vSAN Data Protection Group again for the VM.
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