Fedora Release Engineering Meeting Summary for 2019-07-24

[Mohan Boddu]

======================================
#fedora-meeting-2: RELENG (2019-07-25)
======================================

Meeting started by mboddu at 16:04:11 UTC. The full logs are available
athttps://meetbot.fedoraproject.org/fedora-meeting-2/2019-07-24/releng.2019-07...
.

Meeting summary
---------------
* init process  (mboddu, 16:04:12)

* #8555 Fedora 31 Mass Rebuild  (mboddu, 16:08:40)
  * LINK: https://pagure.io/releng/issue/8555   (mboddu, 16:08:46)
  * Mass rebuild for rpms has started and the mass rebuild for modules
    will start after the current mass rebuild is done, so that the koji
    is not overloaded  (mboddu, 16:10:35)

* Faster composes  (mboddu, 16:13:04)
  * 10 of s390x buildvm's are moved to KVM and 15 are still on Z/VM.
    Couple of them are added to compose channel and couple for image
    channel. This improved the compose/build times on s390x  (mboddu,
    16:24:30)
  * nirik moved all the ppc64le vm's to use libvirt's 'unsafe' cache
    mode, this improved the runroot tasks time from couple of hours to
    few min which inturn improved the compose time.  (mboddu, 16:26:43)

* #8513 F32 system-wide change: x86-64 micro-architecture update
  (mboddu, 16:30:42)
  * LINK: https://pagure.io/releng/issue/8513   (mboddu, 16:30:48)

* #7445 [RFE][PATCH] make $releasever return "rawhide" on Rawhide
  (mboddu, 16:37:54)
  * LINK: https://pagure.io/releng/issue/7445   (mboddu, 16:38:00)

* Open Floor  (mboddu, 16:46:44)
  * nirik enabled srpm repo in f31-build and there is one bug with it.
    He is expecting the koji patch to land to fix it soon.  (mboddu,
    16:49:35)

* EPEL8  (mboddu, 16:49:49)
  * EPEL8 is shaping up good and we are expecting a compose sometime
    next week  (mboddu, 16:52:40)

* Rawhide Gating  (mboddu, 16:55:09)
  * We are expecting to deploy single build rawhide gating tomorrow.
    (mboddu, 16:55:46)

Meeting ended at 17:03:52 UTC.

Action Items
------------

Action Items, by person
-----------------------
* **UNASSIGNED**
  * (none)

People Present (lines said)
---------------------------
* mboddu (74)
* nirik (54)
* zodbot (8)
* sharkcz (5)
* bcotton (3)
* jednorozec (1)
* smooge (1)
* tyll (0)
* puiterwijk (0)
* masta (0)
* pbrobinson (0)
* dustymabe (0)
* pingou (0)
* ksinny (0)

Generated by `MeetBot`_ 0.1.4

.. _`MeetBot`: http://wiki.debian.org/MeetBot

[Igor Gnatenko]

On Wed, Jul 24, 2019 at 7:46 PM Mohan Boddu  wrote:
> ======================================
> #fedora-meeting-2: RELENG (2019-07-25)
>
> Meeting started by mboddu at 16:04:11 UTC. The full logs are available
> at
> https://meetbot.fedoraproject.org/fedora-meeting-2/2019-07-24/releng.2019-07...
> .
> Meeting summary
>
> init process  (mboddu, 16:04:12)
>
> #8555 Fedora 31 Mass Rebuild  (mboddu, 16:08:40)
> LINK: https://pagure.io/releng/issue/8555   (mboddu, 16:08:46)
> Mass rebuild for rpms has started and the mass rebuild for modules
> will start after the current mass rebuild is done, so that the koji
> is not overloaded  (mboddu, 16:10:35)
>
> Faster composes  (mboddu, 16:13:04)
> 10 of s390x buildvm's are moved to KVM and 15 are still on Z/VM.
> Couple of them are added to compose channel and couple for image
> channel. This improved the compose/build times on s390x  (mboddu,
> 16:24:30)
> nirik moved all the ppc64le vm's to use libvirt's 'unsafe' cache
> mode, this improved the runroot tasks time from couple of hours to
> few min which inturn improved the compose time.  (mboddu, 16:26:43)

Oh, this is amazing. What problems does it have? Like if host crashes,
the FS can be entirely broken? Is this improvement due to the type of
the workload or it is just making everything faster? :)
> #8513 F32 system-wide change: x86-64 micro-architecture update
> (mboddu, 16:30:42)
> LINK: https://pagure.io/releng/issue/8513   (mboddu, 16:30:48)
>
> #7445 [RFE][PATCH] make $releasever return "rawhide" on Rawhide
> (mboddu, 16:37:54)
> LINK: https://pagure.io/releng/issue/7445   (mboddu, 16:38:00)
>
> Open Floor  (mboddu, 16:46:44)
> nirik enabled srpm repo in f31-build and there is one bug with it.
> He is expecting the koji patch to land to fix it soon.  (mboddu,
> 16:49:35)

Kevin, thank you for moving this forward!
> EPEL8  (mboddu, 16:49:49)
> EPEL8 is shaping up good and we are expecting a compose sometime
> next week  (mboddu, 16:52:40)
>
> Rawhide Gating  (mboddu, 16:55:09)
> We are expecting to deploy single build rawhide gating tomorrow.
> (mboddu, 16:55:46)
>
> Meeting ended at 17:03:52 UTC.
> Action Items
> Action Items, by person
> **UNASSIGNED**
> (none)
> People Present (lines said)
> mboddu (74)
> nirik (54)
> zodbot (8)
> sharkcz (5)
> bcotton (3)
> jednorozec (1)
> smooge (1)
> tyll (0)
> puiterwijk (0)
> masta (0)
> pbrobinson (0)
> dustymabe (0)
> pingou (0)
> ksinny (0)
>
> Generated by `MeetBot`_ 0.1.4
>
> .. _`MeetBot`: http://wiki.debian.org/MeetBot
>
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[Stephen John Smoogen]

On Wed, 24 Jul 2019 at 14:38, Igor Gnatenko <
[e-mail]> wrote:
> On Wed, Jul 24, 2019 at 7:46 PM Mohan Boddu  wrote:
> > ======================================
> > #fedora-meeting-2: RELENG (2019-07-25)
> >
> > Meeting started by mboddu at 16:04:11 UTC. The full logs are available
> > at
>
> https://meetbot.fedoraproject.org/fedora-meeting-2/2019-07-24/releng.2019-07...
> > .
> > Meeting summary
> >
> > init process  (mboddu, 16:04:12)
> >
> > #8555 Fedora 31 Mass Rebuild  (mboddu, 16:08:40)
> > LINK: https://pagure.io/releng/issue/8555   (mboddu, 16:08:46)
> > Mass rebuild for rpms has started and the mass rebuild for modules
> > will start after the current mass rebuild is done, so that the koji
> > is not overloaded  (mboddu, 16:10:35)
> >
> > Faster composes  (mboddu, 16:13:04)
> > 10 of s390x buildvm's are moved to KVM and 15 are still on Z/VM.
> > Couple of them are added to compose channel and couple for image
> > channel. This improved the compose/build times on s390x  (mboddu,
> > 16:24:30)
> > nirik moved all the ppc64le vm's to use libvirt's 'unsafe' cache
> > mode, this improved the runroot tasks time from couple of hours to
> > few min which inturn improved the compose time.  (mboddu, 16:26:43)
>
> Oh, this is amazing. What problems does it have? Like if host crashes,
> the FS can be entirely broken? Is this improvement due to the type of
> the workload or it is just making everything faster? :)

We have run into an issue with the power9 hardware where every fsync takes
5 seconds to perform from the VM to the real disks. It is not clear why we
are having this problem as various things have been tried, but in order to
work off of it, Kevin turned on the 'lie to me' option. [Actual notes are
in the meeting.]

In this case, if the host dies.. we could have a badly corrupted disk.
However that should just mean a reinstall of the guest.