linux-kernel - Re: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload"

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Message-ID: <20170112134412.GB15178@lst.de>
Date:   Thu, 12 Jan 2017 14:44:12 +0100
From:   Christoph Hellwig <hch@....de>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     Christoph Hellwig <hch@....de>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        Jens Axboe <axboe@...com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        KY Srinivasan <kys@...rosoft.com>,
        "Chris Valean (Cloudbase Solutions SRL)" <v-chvale@...rosoft.com>
Subject: Re: [Regression] fstrim hangs on Hyper-V: caused by "block:
        improve handling of the magic discard payload"

Hi Dexuan,

sorry for dropping the ball on the previous private report, I hoped
I could get my hands on a Hyper-V VM and reproduce it myself, but
that has obviously not happened.

Can you send me the output of the provisioning_mode file for the
scsi disk in question to get started?