Re: Regression in 3.15 on POWER8 with multipath SCSI

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On 06/30/2014 11:28 PM, Paul Mackerras wrote:
On Mon, Jun 30, 2014 at 01:35:20PM +0200, Hannes Reinecke wrote:
On 06/30/2014 01:02 PM, Paul Mackerras wrote:
[ .. ]

No, I'm not using LVM, and in fact I deleted all the physical volumes
that were on any of the disks (they were installations of other
distros), so there are no physical or logical volumes anywhere on any
disk.  I haven't tried disabling the LVM service completely, though.
What would it mean if disabling the LVM service made a difference?

Yes. LVM integration with systemd is a science unto itself.
I'm reasonably confident with multipath, but not LVM.
Plus the fact the the LVM service apparently is waiting for something sort
of points into that direction.

So please do disable the lvm service.

I disabled the LVM service, and it's still bad.  Unmodified 3.15
booted successfully in only 18 out of 50 attempts with LVM disabled.

So it's not LVM.  In any case LVM was fine with a 3.14 kernel.

Right, that was just a cross-check to eliminate any variables.

I'll be checking here at my end.

Cheers,

Hannes
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Dr. Hannes Reinecke		      zSeries & Storage
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SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)

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