• This topic has 46 replies, 33 voices, and was last updated May 10, 2022 by Ciprian B.

Driver I/O cache ran out of memory on host

  • Tim W
    September 17, 2021 03:00:34 PM

    Just upgraded from 8.5.3 to 9.0 Update one and now one of our host is getting a alert message – : Driver I/O cache ran out of memory on host

    . This may impair replication performance. Current I/O cache size: 96 MB. Last full I/O cache memory occurrence: 9 seconds ago. Full I/O cache memory has occurred 1 times in the last 9 seconds.

    Not sure what to do

    Matthew H
    September 17, 2021 03:12:10 PM

    Having the same issue. Updated from 9.0 –> 9.0 U1 and now getting this message on multiple VRAs in vSphere.

    John L
    September 17, 2021 04:29:16 PM

    You can add one more here. It’s so far occurred on multiple hosts across different vcenters.

    Jeroen S
    September 20, 2021 07:32:30 AM

    Same here after updating to 9.0U1

    Jody B
    September 20, 2021 12:31:22 PM

    Same issue for us as well after upgrading to 9.0U1.  Happening on multiple hosts, but not all yet

    Petar S
    September 20, 2021 09:22:18 PM

    Another.

    Matthew K
    September 21, 2021 06:00:44 PM

    Another. Is Zerto paying attention? I don’t see actual responses to the issue.

    Matthew H
    September 21, 2021 06:11:09 PM

    I created a support request and have been told to do one of three things:

    1. Ignore the warning since everything is working
    2. I can manually disable the warning
    3. Escalate to Level 2 support and they can increase the I/O cache (but cannot guarantee it will fix the issue…)

     

    Matthew K
    September 21, 2021 06:12:36 PM

    3 relatively bad options. Nice!

    Matthew K
    September 21, 2021 07:53:06 PM

    This doesn’t sound good at all. Are you to set affinity rules for all of the guests on the host having an issue?

    Brian M
    September 22, 2021 01:46:03 PM

    This is not really a solution in my opinion. I’m not setting affinity rules on all my VM’s/host in that cluster.

    Kevin S
    September 23, 2021 05:23:59 PM

    The 3 Hyper-V hosts at our primary site send me those alerts. Hopefully its not causing any issues and fixed in U2 because those steps seem like to much work.

    Tim K
    September 24, 2021 09:38:57 PM

    Same here, so far on a handful of hosts.

    Patrick R
    September 28, 2021 11:18:43 PM

    Having the same issue here as well.  Has anyone received any helpful information from Zerto?

    Bob C
    September 29, 2021 04:39:09 PM

    Same issue with me as well since upgrade to 9.0 Update 1 from 8.5 Update 3. Otherwise, operating without issue.

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