• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Yellow Bricks

by Duncan Epping

  • Home
  • ESXTOP
  • Stickers/Shirts
  • Privacy Policy
  • About
  • Show Search
Hide Search

Using VAAI ATS capable array and VMFS-5?

Duncan Epping · Dec 27, 2012 ·

<update 21-Jan-2013>I have just been informed that this issue was fixed in vSphere 5.0 Update 1. The KB article and 5.0 U1 release notes will be updated shortly!</update>

If you are using a VAAI ATS capable array and VMFS-5 you might want to read this KB Article. The article describes a situation where it is impossible to mount VMFS volumes when they were formatted with VMFS-5 on a VAAI ATS (locking offloading) capable array. These are the kind of problems that you won’t hit on a daily basis but when you do you will be scratching your head for a while. Note that this also applies to scenarios where for instance SRM is used. The error to look for in your vmkernel log is:

Failed to reserve volume

So anyone with a 5.0 environment and newly formatted VMFS-5 volumes might want to test this. Although the article states that so far it has only been encountered with EMC Clariion, NS and VNX storage, it also notes that it might not be restricted to it. The solution fortunately is fairly simple, just disable VAAI ATS for now.

esxcli system settings advanced set -i 0 -o /VMFS3/HardwareAcceleratedLocking

For more details read the KB and I would also suggest following it with an RSS reader if you have this issue, that way you get notified when there is an update.

Related

Storage 5.0, 5.1, ats, locking, vaai, vSphere

Reader Interactions

Comments

  1. Adam Savage says

    31 December, 2012 at 04:27

    I was able to get around this by formatting the VMFS volumes in VMFS3 and then upgrading them to 5 after. Yes there are implications to it – but its another workaround.

    • xiongye says

      31 December, 2012 at 16:32

      Adam

      Could you please tell me which array you met this problem and is this problem are easy to reproduce?

      thanks..

      XiongYe

      • Adam Savage says

        3 January, 2013 at 21:12

        It was a CX4-960 and VNX that it occurred on.

Primary Sidebar

About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

Upcoming Events

May 24th – VMUG Poland
June 1st – VMUG Belgium

Recommended Reads

Sponsors

Want to support Yellow-Bricks? Buy an advert!

Advertisements

Copyright Yellow-Bricks.com © 2023 · Log in