VVOLs in SANsymphony-V10 PSP4 [or VVOLs on a notebook]

With SANsymphony-V10 PSP4 DataCore introduced VMware VVOL support. In this post I write about the installation and administration of this feature. This is also a very nice way to take a running VVOL implementation on a notebook with you.

Continue reading “VVOLs in SANsymphony-V10 PSP4 [or VVOLs on a notebook]”

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VVOLs in SANsymphony-V10 PSP4 [or VVOLs on a notebook]

Public CA do not allow internal names and reserved IP address any more

With November 2015 public CAs do not issue new certificates that uses internal names or reserved IP addresses in subjectAltName or in commonName. Furthermore such certificates will be revoked on October 1st, 2016.

Internal names are hostnames that do not end with an Top Level Domain ending (.com, .de, …). For example: .local, .internal. Also NetBIOS names without any domain extension are affected.

Reserved IP addresses are defined by Internet Assigned Numbers Authority (IANA). You can look reservations for IPv4 here  (RFC 1918 range) and IPv6 here (RFC 4193 range).

If you are using an internal CA you are not affected. For more information about this change of public CAs click here. For more information about VMware products click here.

Public CA do not allow internal names and reserved IP address any more

[HP] bugs you should know about

[September 2015]

PROBLEM

Because of a misbehavior in iLO (firmware before 2.20) the internal SD card can suddenly stops working on HP ProLiant Gen9 servers. On ESXi Hosts the following error may occur if it is installed to this device:

Lost connectivity to the device mpx.vmhba32:C0:T0:L0 backing the boot filesystem /vmfs/devices/disk/mpx.vmhba32:C0:T0:L0. As a result, host configuration changes will not be saved to persistent storage.

SOLUTION

Upgrade iLO Firmware to at least 2.20.

[November 2014]

PROBLEM (2)

Again there is a problem with hp-ams packages! This time the process hangs when doing a restart of ESXi management agents on ProLiant G5, G6 and G7. ESXi versions 5.x and hp-ams versions 9.5, 9.6 and 10.0 are affected.

SOLUTION (2)

To be honest, this not really a bug, because hp-ams is at the moment just supportet on Gen8 servers. So the solution is to uninstall the software:

  • enable maintenance mode
  • Stop it by executing /etc/init.d/hp-amd.sh stop
  • remote it by running esxcli software vib remove -n hp-ams
  • reboot and exit maintenance mode

Problem (1)

It seems to be a VMware problem that is fixed with vSphere 5.5 U2. It may cause a PSoD on an ESXi host on certain conditions. The errors logged in vmkernel.log look like:

  • DMAR Fault IOMMU
  • IOMMU context entry dump for ...

I had the problem on an ProLiant server during the upgrade process to 5.5 U2. After installing the updates the host ran into a PSoD during reboot. Thank to the failback-feature during updates, the host booted the last working software-profile.

Solution

The Server in my case does not fit exactly to the description in the KB-article but the error were near the same. I resolved the issue by updating the firmware of the server to SPP 2014.09.0. Link to the current SPP you can find here.

[September 2014]

Problem

On a  VMware ESXi you can observe:

  • cannot perform vMotion
  • cannot start services such as SSH
  • when trying to restart management agents you see an error that a process can’t fork
  • on the console of the host, pressing ALT+F1, you can see can’t fork all over the screen
  • in vmkernel.log you can see warning like
    WARNING: Heap: 2677: Heap globalCartel-1 already at its maximum size. Cannot expand.
    or/and
    WARNING: Heap: 3058: Heap_Align(globalCartel-1, 136/136 bytes, 8 align) failed.
  • Veeam backup jobs fail with errors like:
    Error: Client error: File does not exist or locked. VMFS path: [[datastore] path_to_vmx_file.vmx
    Please, try to download specified file using connection to the ESX server where the VM registered.
    Failed to create NFC download stream. NFC path: [nfc://conn:vC-server,nfchost:host-nn,stg:datastore-n@path_to_vmx_file.vmx]


Solution

This behavior can be caused by HP Agentless Management Services (AMS). These version are affected:

  • hp-ams 500.9.6.0-12.434156
  • hp-ams-550.9.6.0-12.1198610.

To resolve the issue you can:

  • Stop the service by executing /etc/init.d/hp-ams.sh stop (the next reboot will start the service again)
  • Uninstall the service by running esxcli software vib remove -n hp-ams
  • Upgrade to minimum version hp-ams 500.10.x respectively hp-ams 550.10.x using Update Manager or esxcli

More information on VMware KB you can finde here.

[August 2014]

Problem

There is a memory leak in HP NIC Management Agent. Now and then there are problems with HP Management Agents. Years ago SCSI Agent causes a lot of failed backups. According to HP Advisory NIC Agent version 9.4, 9.5 and 9.6 may allocate 5MB memory per hour on Windows 2012 and 2012 R2 Servers. Yes, this can just be the case when Windows is installed directly on HP ProLiant Servers. Because of virtualization most often Windows runs as a VM, but think about Hyper-V or in my case DataCore SANsymphony: the NIC Agent process consumed more then 2 GB of memory and causes a real performance impact. A mirror link could use a bandwidth of app. 2Gbit of a 10Gbit link in one direction, the other direction on the same link could use a bandwidth of app. 9Gbit. After disabling the NIC Agent in Windows system settings, 9Gbit could be used in both directions.

Solution

You can:

  • Disable NIC Agent in Windows system settings
  • Upgrade to an version that is not affected
[HP] bugs you should know about