Symptoms

PowerStore Pre-Upgrade Health Check (PUHC) and System Health Check (SHC) may detect this issue when run on the following PowerStoreOS releases: PowerStoreOS 3.xPowerStoreOS 4.x NOTICE The issue detected by these checks is resolved in PowerStoreOS version 4.0.1.2 (or later). Therefore, this PUHC is set to detect this issue only when upgrading to versions earlier than 4.0.1.2. Scenario 1:When running Pre-Upgrade Health Check (PUHC) the following message may be observed prior to an upgrade: Pre-Upgrade Health Check (PUHC) may return the following message: Exists volume groups with no members. Please delete those volume groups and then add them back after NDU. KB # 000238653 (empty_vg_no_members). This PUHC check fails if a Volume Group exists and has zero (0) Member volumes Review the Resolution section of this knowledge base article for corrective actions. A Non-Disruptive Software Upgrade (NDU) will not be allowed to proceed Scenario 2:When running PowerStore System Health Check (SHC), the following message may be observed: System Health Check (SHC) may return the following message: Found problematic attributes in volume groups. (KB#000238653). If the System Health Check (SHC) test is run from the Command-Line Interface (CLI), the following may be displayed: [SVC:service@123456-A ~]$ svc_health_check run -rhc invalid_vg_uuid_check Name Location Status Description Invalid Volume Group UUID Check node_a Failed Found problematic attributes in volume groups. (KB#000238653) SUMMARY Status: Failed Passed: 0 Failed: 1 Total: 1 Note: Results may differ from the above depending on which nodes the test failed. This SHC check fails if a Volume Group exists with an invalid UUID.Review the Resolution section of this knowledge base article for corrective actions. These health checks are off-release PUHC and SHC checks that are contained in the Health Check thin package downloaded from the Dell Drivers & Downloads site. See the Additional Info section for information about the Health Check thin package.

Cause

Volume Groups are a new feature in System Manager (SYM). If there is a volume group without any members in Control Path (CP), it keeps an all-zero identifier. This invalid identifier can cause problems when adding or removing volume members later.

Resolution

Scenario 1:If the Pre-Upgrade Health Check (PUHC) raises a message of Exists volume groups with no members on a PowerStoreOS 3.x or 4.x cluster: This message indicates that there are Volume Groups with zero (0) Member volumes present on the PowerStore cluster.Within PowerStore Manager, go to Storage > Volume Groups and locate any Volume Groups having zero (0) Member volumes.Select any Volume Groups with zero (0) Member volumes, click the More Actions dropdown menu and select Delete.Once all Volume Groups with zero (0) Member volumes have been deleted, proceed with Non-Disruptive Software Upgrade (NDU). Scenario 2:If System Health Check (SHC) raises a message of Found problematic attributes in volume groups. (KB#000238653) on a PowerStoreOS 4.0.x cluster: This message indicates a Volume Groups with zero (0) Member volumes was present on a PowerStoreOS 3.x cluster and later upgraded to PowerStoreOS 4.0.x. Following the software upgrade to PowerStoreOS 4.0.x, volumes were added to this Volume Group that previously had zero (0) Member volumes.This series of administrative actions may have introduced an invalid UUID to the PowerStore cluster of 00000000000000000000000000000000.To resolve this issue, contact technical support for assistance. Reference KB # 000238653 for expedited attention and resolution.

Support Cases