svn commit: r357710 - in head/sys: cam/ata cam/nvme cam/scsi ufs/ffs

[Scott Long]

> On Feb 9, 2020, at 10:01 PM, O. Hartmann <o.hartmann at walstatt.org> wrote:
> 
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> Am Mon, 10 Feb 2020 00:23:20 +0000 (UTC)
> Scott Long <scottl at FreeBSD.org> schrieb:
> 
>> Author: scottl
>> Date: Mon Feb 10 00:23:20 2020
>> New Revision: 357710
>> URL: https://svnweb.freebsd.org/changeset/base/357710
>> 
>> Log:
>>  Add rudamentary support for UFS to probe whether a block device supports the
>>  BIO_SPEEDUP command.  Add complimentary support to the CAM periphs that
>>  support it.
>> 
>> 
> 
> It seems that this commit makes our systems to hang at the point, when trying to mount the
> root partition, last seen message on console is:
> 
> [...]
> mountroot: waiting for device /dev/gpt/root...
> 
> 
> The root partitions on those systems resides on UFS2 formated SSDs (if this has any relevance).
> 

Thanks for the report.  It’s unclear to me how this would be causing a hang.  I’ll work on it, but are you
certain that it’s this commit and nothing else?

Thanks,
Scott