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Re: [Qemu-devel] [PATCH for-3.0 0/9] migration: postcopy recovery unit t

From: Balamuruhan S
Subject: Re: [Qemu-devel] [PATCH for-3.0 0/9] migration: postcopy recovery unit test, bug fixes
Date: Tue, 10 Jul 2018 07:26:40 +0530
User-agent: Mutt/1.9.2 (2017-12-15)

On Thu, Jul 05, 2018 at 11:17:46AM +0800, Peter Xu wrote:
> Based-on: <address@hidden>
> Based on the series to unbreak postcopy:
>   Subject: [PATCH v3 0/4] migation: unbreak postcopy recovery
>   Message-Id: <address@hidden>
> This series introduce a new postcopy recovery test.  The new test
> actually helped me to identify two bugs there so fix them as well
> before 3.0 release.
> Patch 1: a trivial cleanup for existing postcopy ram load, which I
>          found a bit confusing during debugging the problem.
> Patch 2-3: two bug fixes that address different issues.  Please see
>            the commit log for more information.
> Patch 4-9: add the postcopy recovery unit test.
> Please review.  Thanks,

Hi Peter, Dave,

I am sorry, I have missed to include Peter's postcopy-recover fix patchset,

migration: delay postcopy paused state
migration: move income process out of multifd
migration: unbreak postcopy recovery
migration: unify incoming processing

Postcopy migration with pause and recover is working fine.

# QTEST_QEMU_BINARY=./ppc64-softmmu/qemu-system-ppc64
# ./tests/migration-test
/ppc64/migration/deprecated: OK
/ppc64/migration/bad_dest: OK
/ppc64/migration/postcopy/unix: OK
/ppc64/migration/postcopy/recovery: OK
/ppc64/migration/precopy/unix: OK

But qtest patches in this patchset have to be rebased as commit
5fd4a9c97397bc0819a919de7a62ec972ec85260 (tests/migration: Skip tests
for ppc tcg) have gone in.

# git am ../postcopy_pause/4.patch 
Applying: tests: introduce migrate_postcopy_* helpers
error: patch failed: tests/migration-test.c:351
error: tests/migration-test.c: patch does not apply
Patch failed at 0001 tests: introduce migrate_postcopy_* helpers
The copy of the patch that failed is found in:
When you have resolved this problem, run "git am --resolved".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

I have manually reverted it to apply and test your patchset.

This Patchset is working without any issues.

Tested-by: Balamuruhan S <address@hidden>
> Peter Xu (9):
>   migration: simplify check to use qemu file buffer
>   migration: loosen recovery check when load vm
>   migration: fix incorrect bitmap size calculation
>   tests: introduce migrate_postcopy_* helpers
>   tests: allow migrate() to take extra flags
>   tests: introduce migrate_query*() helpers
>   tests: introduce wait_for_migration_status()
>   tests: add postcopy recovery test
>   tests: hide stderr for postcopy recovery test
>  migration/ram.c        |  21 +++--
>  migration/savevm.c     |  16 ++--
>  tests/migration-test.c | 198 ++++++++++++++++++++++++++++++++---------
>  3 files changed, 176 insertions(+), 59 deletions(-)
> -- 
> 2.17.1

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