Re: next/master boot: 179 boots: 11 failed, 167 passed with 1 offline (next-20180731)

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On Wed, Aug 01, 2018 at 07:52:21PM +0800, Ming Lei wrote:
> On Wed, Aug 01, 2018 at 12:24:00PM +0100, Matt Hart wrote:
> > On 1 August 2018 at 11:59, Mark Brown <broonie@xxxxxxxxxx> wrote:
> > > On Wed, Aug 01, 2018 at 06:51:09PM +0800, Ming Lei wrote:
> > >
> > >> You may have to provide some clue, such as dmesg log, boot disk, ...
> > >
> > >> I guess you don't use virtio-scsi/virtio-blk since both run at blk-mq
> > >> mode at default, even though without d5038a13eca72fb.
> > >
> > > Boot logs and so on can be found here:
> > >
> > >     https://kernelci.org/boot/id/5b618c9f59b514931f96ba97/
> > >     https://kernelci.org/boot/id/5b618ca359b514904d96bac5/
> > >     https://kernelci.org/boot/id/5b618cbc59b51492e896baad/
> > >
> > > (these are today's but the symptoms are the same.)  The ramdisk is
> > > unfortunately not linked through the UI, though we don't get that far.
> > 
> > And a full LAVA boot log from my lab
> > http://lava.streamtester.net/scheduler/job/138067
> > 
> > QEMU command line here:
> > http://lava.streamtester.net/scheduler/job/138067#L75
> > 
> > And a LAVA job definition, which includes the url of the ramdisk and kernel:
> > http://lava.streamtester.net/scheduler/job/138067/definition#defline76
> > 
> 
> Thanks for the sharing!
> 
> I can reproduce this issue with above script/initrd/kernel config, and looks
> the issue disappeared after 'scsi_mod.use_blk_mq=0' is passed.
> 
> Not see such issue with zero-day ktest config.
> 
> Looks a bit weird, given SCSI_MQ is nothing related with ramdisk.

Ahm and:
qemu [...] -append "console=ttyS0,115200 root=/dev/ram0 debug verbose"

$ grep CONFIG_BLK_DEV_RAM .config
# CONFIG_BLK_DEV_RAM is not set

Something is fishy here.

-- 
Johannes Thumshirn                                          Storage
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