Messages in this thread | | | Date | Mon, 22 Sep 2014 13:17:01 -0500 | From | Chris J Arges <> | Subject | Re: [PATCH] mptfusion: enable no_write_same in scsi_host_template |
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On 09/22/2014 01:02 PM, Christoph Hellwig wrote: > On Mon, Sep 22, 2014 at 12:56:59PM -0500, Chris J Arges wrote: >> When using a virtual SCSI disk in a VMWare VM if blkdev_issue_zeroout is used >> data can be improperly zeroed out using the mptfusion driver. This patch >> disables write_same for this driver which ensures that manual zeroing out >> is used instead. > > Does this affet real hardware or is it a VMware bug? If it's just the > latter we should simply blacklist VMware. > I've only been able to reproduce this on VMWare. There is a pretty straightforward reproducer in the BugLink if there is any interest in verifying on hardware.
How would you recommending blacklisting only VMWare guests in this case?
Thanks, --chris j arges
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