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https://issues.apache.org/jira/browse/MESOS-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16320849#comment-16320849
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Benno Evers commented on MESOS-8410:
------------------------------------
The issue was caused by an incorrect handling of multiple resources with the
same name. I've opened a review with a fix at
https://reviews.apache.org/r/65074/
> Reconfiguration policy fails to handle mount disk resources.
> ------------------------------------------------------------
>
> Key: MESOS-8410
> URL: https://issues.apache.org/jira/browse/MESOS-8410
> Project: Mesos
> Issue Type: Bug
> Reporter: James Peach
> Assignee: Benno Evers
>
> We deployed {{--reconfiguration_policy="additive"}} on a number of Mesos
> agents that had mount disk resources configured, and it looks like the agent
> confused the size of the mount disk with the size of the work directory
> resource:
> {noformat}
> E0106 01:54:15.000123 1310889 slave.cpp:6733] EXIT with status 1: Failed to
> perform recovery: Configuration change not permitted under 'additive' policy:
> Value of scalar resource 'disk' decreased from 1830000 to 868000
> {noformat}
> The {{--resources}} flag is
> {noformat}
> --resources="[
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 868000
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/a"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/b"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/c"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/d"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/e"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/f"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/g"
> }
> }
> }
> }
> ,
> {
> "name": "disk",
> "type": "SCALAR",
> "scalar": {
> "value": 1830000
> },
> "disk": {
> "source": {
> "type": "MOUNT",
> "mount": {
> "root" : "/srv/mesos/volumes/h"
> }
> }
> }
> }
> ]
> {noformat}
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