from ovirt-node-ng:
build-artifacts.sh: seq 0 9 | xargs -I {} mknod /dev/loop{} b 7 {} || :
On Thu, Jan 11, 2018 at 8:38 PM, Nir Soffer <[email protected]> wrote:
> On Thu, Jan 11, 2018 at 8:31 PM Barak Korren <[email protected]> wrote:
>
>> I thought I explained this before.
>>
>> Writing to losetup from inside mock gets you a device outside mock that
>> is invisible inside.
>>
>
> How the tests work 99.9% of the time?
>
>
>> The way to solve this is to run mknod a few times to get the needed
>> device files.
>>
>> You can see examples of this in the ovirt-node build scripts.
>>
>
> "git grep mknod" in ovirt-node source does not show anything.
>
>
>>
>> Barak Korren
>> [email protected]
>> RHCE, RHCi, RHV-DevOps Team
>> https://ifireball.wordpress.com/
>>
>> בתאריך 11 בינו׳ 2018 04:35 PM, "Nir Soffer" <[email protected]> כתב:
>>
>> We have random failures of loop device tests on jenkins (see example
>>> bellow).
>>>
>>> Barak commented that losetup -f /path does not work sometimes in the CI
>>> but I don't recall what it the alternative way to get a loop device.
>>>
>>> We need a reliable way to create a loop device for vdsm tests. What
>>> is the recommended way to do this?
>>>
>>> Until we have a reliable solution I'm going to mark this test as broken
>>> on ovirt CI:
>>> https://gerrit.ovirt.org/#/c/86241/
>>>
>>> Please report if you see other tests fail with this error - typically:
>>>
>>> Error: Command ['losetup', '--find', '--show', '/tmp/tmp17Wqri/file']
>>> failed with rc=1 out='' err='losetup: /tmp/tmp17Wqri/file: failed to set up
>>> loop device: No such file or directory\n'
>>>
>>>
>>> http://jenkins.ovirt.org/job/vdsm_master_check-patch-el7-
>>> x86_64/20862/consoleFull
>>>
>>> *00:05:48.766*
>>> ======================================================================*00:05:48.766*
>>> ERROR: test_attach_detach_manually
>>> (loopback_test.TestDevice)*00:05:48.767*
>>> ----------------------------------------------------------------------*00:05:48.767*
>>> Traceback (most recent call last):*00:05:48.767* File
>>> "/home/jenkins/workspace/vdsm_master_check-patch-el7-x86_64/vdsm/tests/testValidation.py",
>>> line 191, in wrapper*00:05:48.768* return f(*args,
>>> **kwargs)*00:05:48.768* File
>>> "/home/jenkins/workspace/vdsm_master_check-patch-el7-x86_64/vdsm/tests/loopback_test.py",
>>> line 56, in test_attach_detach_manually*00:05:48.768*
>>> device.attach()*00:05:48.768* File
>>> "/home/jenkins/workspace/vdsm_master_check-patch-el7-x86_64/vdsm/tests/loopback.py",
>>> line 56, in attach*00:05:48.769* raise cmdutils.Error(cmd, rc, out,
>>> err)*00:05:48.769* Error: Command ['losetup', '--find', '--show',
>>> '/tmp/tmp17Wqri/file'] failed with rc=1 out='' err='losetup:
>>> /tmp/tmp17Wqri/file: failed to set up loop device: No such file or
>>> directory\n'*00:05:48.770* -------------------- >> begin captured logging
>>> << --------------------*00:05:48.770* 2018-01-11 13:42:45,676 DEBUG
>>> (MainThread) [root] /usr/bin/taskset --cpu-list 0-1 losetup --find --show
>>> /tmp/tmp17Wqri/file (cwd None) (commands:65)*00:05:48.771* 2018-01-11
>>> 13:42:45,733 DEBUG (MainThread) [root] FAILED: <err> = 'losetup:
>>> /tmp/tmp17Wqri/file: failed to set up loop device: No such file or
>>> directory\n'; <rc> = 1 (commands:86)*00:05:48.772* --------------------- >>
>>> end captured logging << ---------------------
>>>
>>>
>>>
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