Citrix has released a new hotfix for XenServer 6.0.2.
- This hotfix provides improvements to the way in which XenServer logs are captured during a host crash.
- The clock running inside the control domain (dom0) can randomly move forward by 50 minutes due to a bug in the Xen hypervisor. When this happens, Virtual Machines (VM) which follow the dom0 wallclock settings may be affected and display the incorrect time.
In addition, this hotfix includes the following previously released hotfixes.
You can download and read the installation instructions here.
Citrix has released the 13th hotfix for XenServer version 6.0.2.
This hotfix resolves the following issues:
- Customers may experience a loss of network connectivity, if the environment, across multiple VMs, is creating high network load. This is due to the VM being unable to send packets. However, ifconfig (run from the control domain – dom0) will show that packets are still sent to the VM.
- When using active-passive bond mode and receiving traffic on the passive interface, or when receiving VLAN packets, which do not have a VLAN ID configured in the control domain (dom0), the OOM kill error can occur and cause the XenServer host to crash.
- In rare circumstances, attempts to perform VM lifecycle operations can cause the storage subsystem to fail. When this occurs, the VMâs storage repository will become inaccessible.
- NFS connection timeouts can cause XenServer hosts to crash and reboot.
- After a High Availability (HA) failover on the pool master, the new pool master fails to reattach the HA statefile.
NOTE: This hotfix also contains improvements to the storage subsystem efficiency, especially when performing large number of concurrent storage operations.
In addition, this hotfix also includes fixes released in CTX132823 – Hotfix XS602E001 – For XenServer 6.0.2, CTX133166 – Hotfix XS602E003 – For XenServer 6.0.2, CTX133812 – Hotfix XS602E005 – For XenServer 6.0.2, CTX134479 – Hotfix XS602E007 – For XenServer 6.0.2, and CTX135303 – Hotfix XS602E011 – For XenServer 6.0.2.
You can download this latest hotfix here.
Issues Resolved In This Hotfix
This hotfix resolves the following issues:
- Creating a Virtual Machine (VM) or a Virtual Disk Image (VDI) may fail due to lack of space in the NetApp storage array. This is due to an issue in Integrated StorageLink (iSL) when using NetApp storage arrays, which incorrectly configures volumes for thin provisioning.
- Creating a VM or a VDI on an iSL NetApp storage array may consume more than 140% of additional space on the storage array.
- Attempts to re-attach the VDIs from the legacy StorageLink, after upgrading to XenServer 6.0, may display incorrect storage volume information in XenCenter.
- VM Snapshots created on an iSL NetApp Storage Repository (SR) are deleted if a single snapshot is removed from the snapshot tree.
- Creating an SR on an iSL Dell EqualLogic storage array will fail, if using Dell EqualLogic Array Firmware version greater than 5.1.1.
- Snapshots created on an iSL NetApp storage array inflate the underlying volume and will eventually fill up the aggregate space.
- Changing the IP address of a NetApp storage array when attempting to re-attach the iSL SR with a NetApp storage array, may result in an iSL SR crash.
- Taking a snapshot of a VM with enabled thin provisioning, attached to an iSL NetApp storage array, may result in a thick provisioning snapshot.
- Reverting a snapshot of a VM with enabled thin provisioning, and attached to an iSL NetApp storage array, may result in the newly created clone and snapshot being thick provisioned.
NOTE: In addition, this hotfix also includes several bug fixes.
Installing the Hotfix
Customers should use either XenCenter or the XenServer Command Line Interface (CLI) to install this update. Once the update has installed, the server must be restarted for it to take effect. As with any software update, please back up your data before applying this hotfix. Citrix recommends updating all hosts within a pool sequentially. Upgrading of hosts should be scheduled to minimize the amount of time the pool runs in a “mixed state” where some hosts have been upgraded and some have not. Running a mixed pool of updated and non-updated hosts for general operation is not supported.
- The attachment to this article is a zip file.
- To minimise hotfix application time, specifically to avoid host reboot and VM migrations while applying this hotfix, customers should follow the instructions for installing the update using the XenServer CLI. Continue reading “Hotfix XS602E006 for XenServer 6.0.2”