I thought I explained this before. Writing to losetup from inside mock gets you a device outside mock that is invisible inside.
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. 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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