12:31 p.m.
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
bkorren(a)redhat.com
RHCE, RHCi, RHV-DevOps Team
https://ifireball.wordpress.com/
בתאריך 11 בינו׳ 2018 04:35 PM, "Nir Soffer" <nsoffer(a)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 << ---------------------