# [OmniOS-discuss] Two panics now while writing eager zeros to zvols

Richard Jahnel rjahnel at ellipseinc.com
Mon Oct 12 14:46:03 UTC 2015

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    Hmmm seems possible. Both panics included attempts to make eager zeroed volumes larger than 2 TB.

    From: wuffers [mailto:moo at wuffers.net]
    Sent: Saturday, October 10, 2015 2:19 AM
    To: Dan McDonald
    Cc: Richard Jahnel; imemo; omnios-discuss at lists.omniti.com
    Subject: Re: [OmniOS-discuss] Two panics now while writing eager zeros to zvols

    Is this the same bug I ran into in March?

    http://lists.omniti.com/pipermail/omnios-discuss/2015-March/004540.html

    I'm running a newer stmf_sbd that Dan made which solved my issue. It had something to do with the WRITE_SAME VAAI primitive, but I'm also running with COMSTAR.

    Dan was pretty busy preparing for R151014 at the time, so he hasn't had a chance to upstream it back.

    On Fri, Oct 9, 2015 at 11:33 PM, Dan McDonald <danmcd at omniti.com<mailto:danmcd at omniti.com>> wrote:
    That's just the "you had a kernel panic" message.  Shoot.  I was hoping for hardware problems.

    What is that process I mentioned -- VS20Vol20_snapcy ? What is it doing?  It's driven from cron, but I can't tell much beyond that.  (Most kernel dumps don't take in userspace text.)

    Dan

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