[ovirt-devel] [VDSM] All tests using directio fail on CI

[Evgheni Dereveanchin]

Hi,

Indeed the proposed dd test does not work on zRAM slaves.
Can we modify the job not to run on nodes with ram_disk label?

The node will be offline for now until we agree on what to do.
An option is to abandon RAM disks completely as we didn't find
any performance benefits from using them so far.

Regards, 
Evgheni Dereveanchin 

----- Original Message -----
From: "Eyal Edri" <eedri at redhat.com>
To: "Nir Soffer" <nsoffer at redhat.com>, "Evgheni Dereveanchin" <ederevea at redhat.com>
Cc: "Yaniv Kaul" <ykaul at redhat.com>, "devel" <devel at ovirt.org>, "infra" <infra at ovirt.org>
Sent: Thursday, 29 September, 2016 8:08:45 AM
Subject: Re: [ovirt-devel] [VDSM] All tests using directio fail on CI

Evgheni,
Can you try switching the current RAM drive with zram?

On Wed, Sep 28, 2016 at 11:43 PM, Nir Soffer <nsoffer at redhat.com> wrote:

> On Wed, Sep 28, 2016 at 11:39 PM, Yaniv Kaul <ykaul at redhat.com> wrote:
> > On Sep 28, 2016 11:37 PM, "Nir Soffer" <nsoffer at redhat.com> wrote:
> >>
> >> On Wed, Sep 28, 2016 at 11:20 PM, Nir Soffer <nsoffer at redhat.com>
> wrote:
> >> > On Wed, Sep 28, 2016 at 10:31 PM, Barak Korren <bkorren at redhat.com>
> >> > wrote:
> >> >> The CI setup did not change recently.
> >> >
> >> > Great
> >> >
> >> >> All standard-CI jobs run inside mock (chroot) which is stored on top
> >> >> of a regular FS, so they should not be affected by the slave OS at
> all
> >> >> as far as FS settings go.
> >> >>
> >> >> But perhaps some slave-OS/mock-OS combination is acting strangely, so
> >> >> could you be more specific and point to particular job runs that
> fail?
> >> >
> >> > This jobs failed, but it was deleted (I get 404 now):
> >> > http://jenkins.ovirt.org/job/vdsm_master_check-patch-fc24-
> x86_64/2530/
> >>
> >> Oops, wrong build.
> >>
> >> This is the failing build:
> >>
> >>
> >> http://jenkins.ovirt.org/job/vdsm_master_check-patch-el7-
> x86_64/1054/console
> >>
> >> And this is probably the reason - using a ram disk:
> >>
> >> 12:24:53 Building remotely on ovirt-srv08.phx.ovirt.org (phx physical
> >> integ-tests ram_disk fc23) in workspace
> >> /home/jenkins/workspace/vdsm_master_check-patch-el7-x86_64
> >>
> >> We cannot run the storage tests using a ramdisk. We are creating
> >> (tiny) volumes and storage domains and doing copies, this code cannot
> >> work with ramdisk.
> >
> > Will it work on zram?
> > What if we configure ram based iSCSI targets?
>
> I don't know, but it is easy to test - it this works the tests will work:
>
> dd if=/dev/zero of=file bs=512 count=1 oflag=direct
> _______________________________________________
> Infra mailing list
> Infra at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/infra
>
>
>


-- 
Eyal Edri
Associate Manager
RHV DevOps
EMEA ENG Virtualization R&D
Red Hat Israel

phone: +972-9-7692018
irc: eedri (on #tlv #rhev-dev #rhev-integ)