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Posted to commits@cloudstack.apache.org by GitBox <gi...@apache.org> on 2021/03/11 15:07:54 UTC

[GitHub] [cloudstack] ustcweizhou opened a new pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

ustcweizhou opened a new pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800


   ### Description
   
   We do not need to rebase the qcow2 image of DATADISK and ROOT disk which does not have a backing file.
   
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   ### Types of changes
   
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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-801036404


   Packaging result: :heavy_check_mark: centos7 :heavy_multiplication_x: centos8 :heavy_multiplication_x: debian. SL-JID 152


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[GitHub] [cloudstack] rubieHess commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rubieHess commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r598318705



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,11 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));

Review comment:
       I detect that this code is problematic. According to the [Performance (PERFORMANCE)](https://spotbugs.readthedocs.io/en/stable/bugDescriptions.html#performance-performance), [Dm: Method invokes inefficient new String(String) constructor (DM_STRING_CTOR)](https://spotbugs.readthedocs.io/en/stable/bugDescriptions.html#dm-method-invokes-inefficient-new-string-string-constructor-dm-string-ctor).
   Using the java.lang.String(String) constructor wastes memory because the object so constructed will be functionally indistinguishable from the String passed as a parameter.  Just use the argument String directly.
   




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[GitHub] [cloudstack] DaanHoogland commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
DaanHoogland commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797406054


   > > @weizhouapache I'm confused by your description in context of the code change. If we do have a disk, but no backing format, we go ahead and rebase it as qcow2, am I right?
   > > and if we don't have a file path or we do have a backing format, we do nothing.
   > 
   > @DaanHoogland I changed the title and description.
   > 
   > we do nothing if (1) disk does not have a backing file ; (2) disk has backing file, and also backing file format.
   > we set backing file format only if disk has a backing file but backing file format is missing
   
   exactly what the code does, good text for the tin ;)


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-801011232


   @shwstppr a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress. [S]


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[GitHub] [cloudstack] rubieHess commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rubieHess commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r598679215



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,11 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));

Review comment:
       Happy to help.




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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-799236581


   @shwstppr a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress. [S]


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-796827718


   @rhtyd a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress. [S]


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[GitHub] [cloudstack] rhtyd commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rhtyd commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-801705742


   @blueorangutan test


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-801706232


   @rhtyd a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests [S]


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[GitHub] [cloudstack] weizhouapache commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
weizhouapache commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r598518007



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,11 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));

Review comment:
       @rubieHess good point. thanks ! I will create a pr for it.




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[GitHub] [cloudstack] DaanHoogland merged pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
DaanHoogland merged pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800


   


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[GitHub] [cloudstack] weizhouapache commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
weizhouapache commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r593155348



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,8 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));
             String backingFileFormat = info.get(new String("backing_file_format"));
-            if (org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {
+            if (org.apache.commons.lang.StringUtils.isNotBlank(backingFilePath)
+                    && org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {

Review comment:
       @rhtyd then it is fine, we do nothing.




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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797054860


   @shwstppr a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests [S]


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-799236879


   @shwstppr a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress. [S]


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[GitHub] [cloudstack] shwstppr commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
shwstppr commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-801010555


   @blueorangutan package


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797292083


   <b>[S] Trillian test result (tid-91)</b>
   Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
   Total time taken: 34323 seconds
   Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4800-t91-kvm-centos7.zip
   Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
   Smoke tests completed. 85 look OK, 1 have error(s)
   Only failed tests results shown below:
   
   
   Test | Result | Time (s) | Test File
   --- | --- | --- | ---
   test_01_migrate_VM_and_root_volume | `Error` | 80.66 | test_vm_life_cycle.py
   test_02_migrate_VM_with_two_data_disks | `Error` | 48.22 | test_vm_life_cycle.py
   


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[GitHub] [cloudstack] rhtyd commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rhtyd commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r593146838



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,8 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));
             String backingFileFormat = info.get(new String("backing_file_format"));
-            if (org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {
+            if (org.apache.commons.lang.StringUtils.isNotBlank(backingFilePath)
+                    && org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {

Review comment:
       What if the backing file format is not empty? 




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[GitHub] [cloudstack] rhtyd commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rhtyd commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-796827098


   @blueorangutan package 


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[GitHub] [cloudstack] shwstppr commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
shwstppr commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-799234990


   @blueorangutan package


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[GitHub] [cloudstack] weizhouapache edited a comment on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
weizhouapache edited a comment on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797392700


   > @weizhouapache I'm confused by your description in context of the code change. If we do have a disk, but no backing format, we go ahead and rebase it as qcow2, am I right?
   > and if we don't have a file path or we do have a backing format, we do nothing.
   
   @DaanHoogland I changed the title and description.
   
   we do nothing if (1) disk does not have a backing file ; (2) disk has backing file, and also backing file format.
   we set backing file format only if disk has a backing file but backing file format is missing


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[GitHub] [cloudstack] weizhouapache commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
weizhouapache commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797392700


   > @weizhouapache I'm confused by your description in context of the code change. If we do have a disk, but no backing format, we go ahead and rebase it as qcow2, am I right?
   > and if we don't have a file path or we do have a backing format, we do nothing.
   
   @DaanHoogland I changed the title and description.
   
   we do nothing if (1) disk does not have a backing file ; (2) disk has backing file, and also backing file format.
   we set backing file format only if disk has a backing file but does not have backing file format.


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[GitHub] [cloudstack] shwstppr commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
shwstppr commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797054398


   @blueorangutan test


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[GitHub] [cloudstack] rhtyd commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
rhtyd commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-805552594


   @blueorangutan test


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-806029123


   <b>Trillian test result (tid-245)</b>
   Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
   Total time taken: 36842 seconds
   Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4800-t245-kvm-centos7.zip
   Intermittent failure detected: /marvin/tests/smoke/test_routers_network_ops.py
   Intermittent failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
   Smoke tests completed. 85 look OK, 1 have error(s)
   Only failed tests results shown below:
   
   
   Test | Result | Time (s) | Test File
   --- | --- | --- | ---
   test_01_migrate_VM_and_root_volume | `Error` | 82.99 | test_vm_life_cycle.py
   test_02_migrate_VM_with_two_data_disks | `Error` | 52.30 | test_vm_life_cycle.py
   


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[GitHub] [cloudstack] weizhouapache commented on a change in pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
weizhouapache commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r593171611



##########
File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
##########
@@ -4266,7 +4266,8 @@ public void setBackingFileFormat(String volPath) {
             Map<String, String> info = qemu.info(file);
             String backingFilePath = info.get(new String("backing_file"));
             String backingFileFormat = info.get(new String("backing_file_format"));
-            if (org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {
+            if (org.apache.commons.lang.StringUtils.isNotBlank(backingFilePath)
+                    && org.apache.commons.lang.StringUtils.isEmpty(backingFileFormat)) {

Review comment:
       > Maybe some log messages for debug/warn purposes would be interesting. Or do you think that it is something that system admins should not be bothered with?
   > 
   > I am thinking especially on cases such as `backingFileFormat` not empty and blank/empty `backingFilePath`, or _vice versa_.
   > 
   > Additionally, what do you think of replacing `StringUtils.isEmpty(backingFileFormat)` with `StringUtils.isBlank(backingFileFormat)`? In such case it would then check if `backingFileFormat` is whitespace, empty ("") or null.
   
   @GabrielBrascher there is a info next to these lines
   ```
                   s_logger.info("Setting backing file format of " + volPath);
   ```
   I will add a line as comment to explain why we need this change.
   https://libvirt.org/kbase/backing_chains.html#vm-refuses-to-start-due-to-misconfigured-backing-store-format
   
   StringUtils.isBlank(backingFileFormat) and StringUtils.isEmpty(backingFileFormat) have no difference I think.  there are only  2 possible values: empty and 'qcow2'. I will change to isBlank




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[GitHub] [cloudstack] DaanHoogland commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
DaanHoogland commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-797389521


   @weizhouapache I'm confused by your description in context of the code change. If we do have a disk, but no backing format, we go ahead and rebase it as qcow2, am I right?
   and if we don't have a file path or we do have a backing format, we do nothing.


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not set backing file format of DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-805553156


   @rhtyd a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests


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[GitHub] [cloudstack] blueorangutan commented on pull request #4800: kvm: Do not rebase DATADISK in vm start/migration

Posted by GitBox <gi...@apache.org>.
blueorangutan commented on pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#issuecomment-796844514


   Packaging result: :heavy_check_mark: centos7 :heavy_check_mark: centos8 :heavy_check_mark: debian. SL-JID 95


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