Thanks Iranna for the update, the wiki entry LGTM
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu 16.04.4 P8
Guest from
I wanted to take a look at this again, but TBH at the moment all I've
got was crashing my P9 system three times. I'll start a mail thread on
it and keep this bug clean of it for now.
While resolving that I hope that Bala/Greg will find something about the
issue here on their side.
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Ok, if that was what you had in mind when selecting patches fine.
Thanks for taking a look.
I'll for tracking eventually fork a bug number for the remaining issue
on this then, but this can wait until it is discussed and pre-tested
here.
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The old title defies my understanding of this case thou, never the less all
changes so far were to 18.04.
And on confirmation it was 18.04 broken -> 18.04 working after the fix.
I'll set up a few systems to try if they are free atm.
But a new bug would still be appreciated.
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Hi Bala,
interesting, but not 100% the same case IMHO.
The former fix and discussion was about 18.04 on P8 to 18.04 on P9 and
it worked fine after the fixes that were pointed out were integrated.
I'd ask you to file a new bug (internally for you and your PPC dev's as
well as with launchpad for
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Released
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu
This bug was fixed in the package qemu - 1:2.11+dfsg-1ubuntu7
---
qemu (1:2.11+dfsg-1ubuntu7) bionic; urgency=medium
* d/p/ubuntu/lp-1762854-*: fix issue with SCSI-2 devices denying Protection
information (LP: #1762854).
* d/p/ubuntu/lp-1763468-*: fix VSMT handling to fix
** Changed in: ubuntu-power-systems
Status: Triaged => In Progress
** Changed in: qemu (Ubuntu)
Status: Triaged => In Progress
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Got P9 HW myself:
current qemu:
a) P8->P9 worked
b) P8->P9->P8 failed (silently)
proposed qemu for this bug:
a) P8->P9 worked
b) P8->P9->P8 worked
P9->P8 also working if one sets the right compat, like for example
Default on P9 guest:
cpu : POWER9 (architected),
Thanks for the verify, pushed to Bionic-unapproved
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu 16.04.4 P8
Guest from
Thanks Greg for taking a look with me.
We unfortunately can't rely on kernel 4.15 due to the fact that the virt stack
in 18.04 will be made available to Xenial via the Ubuntu Cloud Archive [1].
So this could run on hosts as much back as 4.4
With that said we would still need patches -1 and -4.
** Changed in: qemu (Ubuntu)
Importance: Undecided => High
** Changed in: qemu (Ubuntu)
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) =>
David Britton (davidpbritton)
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** Changed in: qemu (Ubuntu)
Status: Incomplete => Triaged
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu 16.04.4 P8
** Changed in: ubuntu-power-systems
Status: Incomplete => Triaged
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu
The simply said "its dependencies" seems to be a dependency hell.
72fdd4de8e5 spapr: register dummy ICPs later
referred to fix patch:
72194664c8a1 spapr: use spapr->vsmt to compute VCPU ids
is not in Qemu 2.11, nor is the one this fixes
8904e5a75005 spapr: Adjust default VSMT value for
** Changed in: ubuntu-power-systems
Status: New => Triaged
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Title:
[Ubuntu 18.04] P8 compat mode migration fails for Ubuntu 16.04.4 P8
I tested P8->P8 but couldn't P8->P9 lacking the HW in the same environment.
Thanks for spotting that issue, taking a look at backportability of this ...
** Changed in: qemu (Ubuntu)
Status: New => Triaged
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** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Importance: Undecided => Critical
** Tags added: triage-g
** Changed in: ubuntu-power-systems
Importance: Critical => High
** Changed in: ubuntu-power-systems
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