Patch for SCSI issue with VMware ESX
After ESX 3.5 update 3 there was the risk for I/O failure to your SAN. It presents itself like:
- VMware ESX or ESXi host might get disconnected from VirtualCenter
- All paths to the LUNs are in standby state
- esxcfg-rescan might take a long time to complete or never completes
- Error messages in vmkernel log
Last Friday VMware published a patch for this problem.
This issue can occur if you’ve got the following:
- VMware ESX 3.5 U3
- SAN hardware: Active/Passive and Active/Active arrays (Fibre Channel and iSCSI)
- Problem occurs when VMFS3 metadata updates are being done at the same time failover to an alternate path occurs for the LUN on which the VMFS3 volume resides
The issue can be resolved with the January 30 patch. You have to reboot your server for this to work.
Link to the knowledge base article:
- Resolved: VMware vSphere 5.5 Update 1 NFS disconnects by Erik Scholten
- Untangle the mess! Network issues with VMware VMs by Sander Martijn
- Microsoft’s Convenience Update breaks VMware… by Alex Muetstege
- Best Practices running VMware with NFS by Edwin Weijdema
- VMware releases first ShellShock patch by Alex Muetstege
Anne Jan Elsinga
Anne Jan Elsinga is a Technical Account Manager for VMware. In the past he worked as presales and technical consultancy and architecture for several systems integrators. From 2009 until 2017 he was awarded with the VMware vExpert status. In the night time he dances latin, ballroom and salsa and he also discovered the pleasure of diving and woodworking. Recently he started blogging about smart homes and comfort in general.