Looks like the addition of a depth attribute to the <op> element in the CIB diff causes a schema violation. E.g.,

          <op depth="10" id="nginx-monitor-interval-30s" interval="30s" name="monitor" timeout="30s">
            <instance_attributes id="nginx-monitor-interval-30s-instance_attributes">
              <nvpair id="nginx-monitor-interval-30s-instance_attributes-OCF_CHECK_LEVEL" name="OCF_CHECK_LEVEL" value="10"/>
            </instance_attributes>
          </op>


pcs-0.10.8-1's diff looks like this for the same op:

        <op id="nginx-monitor-interval-30s" interval="30s" name="monitor" timeout="30s">
          <instance_attributes id="nginx-monitor-interval-30s-instance_attributes">
            <nvpair id="nginx-monitor-interval-30s-instance_attributes-OCF_CHECK_LEVEL" name="OCF_CHECK_LEVEL" value="10"/>
          </instance_attributes>
        </op>

If I remove depth from the diff on 0.10.10-1, the cib_apply_diff works fine.

I think this might fix it? In Agent.get_actions():

Before:
                        dc_replace(action, OCF_CHECK_LEVEL=action.depth)

After:
                        dc_replace(action, depth=None, OCF_CHECK_LEVEL=action.depth)

Never mind :) saw https://github.com/ClusterLabs/pcs/pull/366

Created attachment 1818301 [details]
proposed fix

See comment 0 for a test.

DevTestResults:

[root@r8-node-01 ~]# rpm -q pcs
pcs-0.10.10-2.el8.x86_64

[root@r8-node-01 ~]# pcs resource create nginx ocf:heartbeat:nginx
Warning: changing a monitor operation interval from 60s to 61 to make the operation unique
[root@r8-node-01 ~]# echo $?
0

BEFORE:
=======

[root@virt-132 ~]# rpm -q pcs
pcs-0.10.10-1.el8.x86_64

[root@virt-132 ~]# pcs resource create nginx ocf:heartbeat:nginx
Warning: changing a monitor operation interval from 60s to 61 to make the operation unique
Error: Unable to update cib
Call cib_apply_diff failed (-203): Update does not conform to the configured schema
{cib output}
[root@virt-132 ~]# echo $?
1


AFTER:
======

[root@virt-024 ~]# rpm -q pcs
pcs-0.10.10-2.el8.x86_64

[root@virt-024 ~]# pcs resource create nginx ocf:heartbeat:nginx
Warning: changing a monitor operation interval from 60s to 61 to make the operation unique
[root@virt-024 ~]# echo $? 
0
[root@virt-024 ~]# pcs resource
  * nginx	(ocf::heartbeat:nginx):	 Stopped

> OK


Regression tests will be conducted as part of bz1935594. Marking as Verified in pcs-0.10.10-2.el8

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Low: pcs security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:4142