Created attachment 1521234 [details]
engine log

Description of problem:
Tring to add, via REST API, a HP3PAR managed storage domain with property 'hpe3par_cpg' (CPG that exist on the stoage of course) with more than one letter like 'SSD_r5' fails with the error below.

It looks like we/CinderLib are parsing the 'hpe3par_cpg' value expecting a list and not a string so it takes the first letter only 'S' (see from error below ' CPG (S) doesn't exist on array')

Engine log:
2019-01-17 10:09:15,322+02 INFO  [org.ovirt.engine.core.common.utils.cinderlib.CinderlibExecutor] (default task-73) [9da5f8df-cd9b-4957-b5e7-279ca9c3419d] cinderlib output: Invalid input received: CPG (S) doesn't exist on array
2019-01-17 10:09:15,330+02 ERROR [org.ovirt.engine.core.bll.storage.disk.managedblock.GetManagedBlockStorageStatsCommand] (default task-73) [9da5f8df-cd9b-4957-b5e7-279ca9c3419d] Failed to fetch Managed block storage stats, output: 'Invalid input received: CPG (S) doesn't exist on array', '{}': org.codehaus.jackson.JsonParseException: Unexpected character ('I' (code 73)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: java.io.StringReader@3a8c040f; line: 1, column: 2]
	at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1433) [jackson-core-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:521) [jackson-core-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:442) [jackson-core-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.impl.ReaderBasedParser._handleUnexpectedValue(ReaderBasedParser.java:1198) [jackson-core-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.impl.ReaderBasedParser.nextToken(ReaderBasedParser.java:485) [jackson-core-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2770) [jackson-mapper-asl-1.9.13.jar:1.9.13]
	at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2718) [jackson-mapper-asl-1.9.13.jar:1.9.13]


Version-Release number of selected component (if applicable):
Software Version:4.3.0-0.4.master.20190106162157.gitd96a412.el7


How reproducible:
100%

Steps to Reproduce:
1. Try to add via RESTAPI a HP3PAR managed storage with 'hpe3par_cpg' that exist with more than one letter like 'SSD_r5'(see excat REST request used in 'Additional info' section)

RESTAPI that was used:

Method:
POST

Headers:
content-type →application/xml
Authorization -> Basic Auth ( Username: admin@internal, Password: 123456)

URL:
https://storage-ge-08.scl.lab.tlv.redhat.com/ovirt-engine/api/storagedomains

Body:
<storage_domain>
   <name>cinder-hp3par</name>
   <type>managed_block_storage</type>
   <storage>
      <type>managed_block_storage</type>
      <driver_name>hpe</driver_name>
      <driver_options>
      	<property>
            <name>hpe3par_api_url</name>
            <value>https://3par-cli.mgmt.lab3.tlv.redhat.com:8080/api/v1</value>
         </property>
      	<property>
            <name>san_ip</name>
            <value>10.35.84.14</value>
         </property>
      	<property>
            <name>san_login</name>
            <value>admin</value>
         </property>
         <property>
            <name>san_password</name>
            <value>Qum!0net</value>
         </property>
         <property>
            <name>hpe3par_username</name>
            <value>3paredit</value>
         </property>
         <property>
            <name>hpe3par_password</name>
            <value>123456</value>
         </property>
         <property>
            <name>hpe3par_cpg</name>
            <value>SSD_r5,</value>
         </property>
         <property>
            <name>volume_driver</name>
            <value>cinder.volume.drivers.hpe.hpe_3par_fc.HPE3PARFCDriver</value>
         </property>
         <property>
            <name>hpe3par_debug</name>
            <value>False</value>
         </property>
         <property>
            <name>hpe3par_iscsi_chap_enabled</name>
            <value>False</value>
         </property>
         <property>
            <name>hpe3par_snapshot_retention</name>
            <value>48</value>
         </property>
         <property>
            <name>hpe3par_snapshot_expiration</name>
            <value>72</value>
         </property>
         <property>
            <name>max_over_subscription_ratio</name>
            <value>20.0</value>
         </property>
         <property>
            <name>reserved_percentage</name>
            <value>15</value>
         </property>
      </driver_options>
   </storage>
   <host>
      <name>host_mixed_1</name>
   </host>
</storage_domain>

Actual results:
Action fails with the following error at engine log:
Engine log:
2019-01-17 10:09:15,322+02 INFO  [org.ovirt.engine.core.common.utils.cinderlib.CinderlibExecutor] (default task-73) [9da5f8df-cd9b-4957-b5e7-279ca9c3419d] cinderlib output: Invalid input received: CPG (S) doesn't exist on array
2019-01-17 10:09:15,330+02 ERROR [org.ovirt.engine.core.bll.storage.disk.managedblock.GetManagedBlockStorageStatsCommand] (default task-73) [9da5f8df-cd9b-4957-b5e7-279ca9c3419d] Failed to fetch Managed block storage stats, output: 'Invalid input received: CPG (S) doesn't exist on array', '{}': org.codehaus.jackson.JsonParseException: Unexpected character ('I' (code 73)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: java.io.StringReader@3a8c040f; line: 1, column: 2]

Expected results:
Action should not fail, it looks like using regular(open stack cinder with the same storage works) so this looks either an our(Rhv) issue or cinderLib driver issue.

Additional info:
A work around is to create a CPG at HP3PAR storage itself with 1 letter for exmple I created a CPG named 'O' and the REST request worked.