On Thu, Jan 11, 2018 at 8:31 PM Barak Korren <bkor...@redhat.com> 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 > bkor...@redhat.com > RHCE, RHCi, RHV-DevOps Team > https://ifireball.wordpress.com/ > > בתאריך 11 בינו׳ 2018 04:35 PM, "Nir Soffer" <nsof...@redhat.com> 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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