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From Andrija Panic <andrija.pa...@shapeblue.com>
Subject RE: how to run rhel 6.x VM as PV VM on xenserver 7.1CU1?
Date Wed, 30 Jan 2019 10:34:11 GMT
Hi Yiping,

As far as I can expect, patch level should not break any functionality with ACS (except, obviously,
guest OS mappings...) so I assume it should work same was as unpatched/vanila version.

https://cloudstack.apache.org/api/apidocs-4.11/apis/addGuestOsMapping.html

Please use above API call to make needed guest OS mapping - i.e. observe needed (or all ???)
OS types (ID value from guest_os table for each guest OS type in ACS) and use it to generate
appropriate API calls which will create missing mapping records inside guest_os_hypervisor
table).

Alternatively,  just copy all 192 rows that you have for 7.1.0 - duplicate all these rows
with changing hypervisor_version to 7.1.1 - I assume mgmt. restart might be needed, but since
test env, doesn't hurt.

Let me know how this worked for you,

Best
Andrija

andrija.panic@shapeblue.com 
www.shapeblue.com
Amadeus House, Floral Street, London  WC2E 9DPUK
@shapeblue
  
 


-----Original Message-----
From: Yiping Zhang <yzhang@marketo.com> 
Sent: 29 January 2019 21:54
To: users@cloudstack.apache.org
Subject: Re: how to run rhel 6.x VM as PV VM on xenserver 7.1CU1?

Hi, Andrija:

I think you are

 on to something here:

Here are my query results for these sql statements:

mysql> select id,name,hypervisor_type,hypervisor_version from host where type="Routing"
and removed is NULL;
+----+---------------+-----------------+--------------------+
| id | name          | hypervisor_type | hypervisor_version |
+----+---------------+-----------------+--------------------+
| 56 | lab-hv03 | XenServer       | 7.1.1              |
| 57 | lab-hv02 | XenServer       | 7.1.1              |
| 58 | lab-hv04 | XenServer       | 7.1.1              |
+----+---------------+-----------------+--------------------+
3 rows in set (0.00 sec)

mysql> SELECT count(*) FROM guest_os_hypervisor WHERE hypervisor_type="Xenserver" AND hypervisor_version
= "7.1.0";
+----------+
| count(*) |
+----------+
|      192 |
+----------+
1 row in set (0.00 sec)

mysql> SELECT count(*) FROM guest_os_hypervisor WHERE hypervisor_type="Xenserver" AND hypervisor_version
= "7.1.1";
+----------+
| count(*) |
+----------+
|        0 |
+----------+
1 row in set (0.01 sec)

mysql>


As can be seen,  there are 192 entries for hypervisor_version "7.1.0", but zero entries for
"7.1.1" which is what my hypervisors are.  I went back to read 4.11.2.0 release notes again
on supported hypervisor lists and sure enough,  there is no mention of XenServer 7.1CU1 being
supported.

What changes are required on CloudStack side to add support for XenServer 7.1CU1 (aka 7.1.1)?
 Would it be sufficient by adding missing mappings in guest_os_hypervsior table and adding
new entry in hypervisor_capabilities table?  Is there any code change required?

Thanks

Yiping

On 1/29/19, 12:34 AM, "Andrija Panic" <andrija.panic@shapeblue.com> wrote:

    Yiping,
    
    Here is one more thing to check - please check your hypervisor version, as reported inside
cloud.host table:
    
    i.e.
    
    select id,name,hypervisor_type,hypervisor_version from host where type="Routing" and removed
is NULL;
    
    would in my lab return something like this:
    
    +----+------------+-----------------+--------------------+
    | id | name       | hypervisor_type | hypervisor_version |
    +----+------------+-----------------+--------------------+
    |  1 | 10.2.2.202 | VMware          | 6.5                |
    +----+------------+-----------------+--------------------+
    
    Check the version reported for your XenServer, I'm assuming it might report true version
after upgrade i.e. "7.1.2", for which there are NO mappings inside guest_os_hypervisor table
- if so, you would need to duplicate all the mapping records for XenServer 7.1.0 (or 7.0.0).
    
    Different way to say it :
    SELECT * FROM guest_os_hypervisor WHERE hypervisor_type="Xenserver" AND hypervisor_version
= "7.1.2";
    ...gives no result (there is no mapping from ACS guest OS to hypervisor guest OS)
    
    while
    
    SELECT * FROM guest_os_hypervisor WHERE hypervisor_type="Xenserver" AND hypervisor_version
= "7.1.0";
    ...would return many rows with proper mappings
    
    Check this, and we can work from there, once you confirm this might be the issue (there
are API calls to do this, or we can do it with SQL etc - add missing mappins).
    
    Kind regards,
    Andrija
    
    andrija.panic@shapeblue.com 
    https://na01.safelinks.protection.outlook.com/?url=www.shapeblue.com&amp;data=02%7C01%7Cyipzhang%40adobe.com%7Caf6dbfb87b194e4324f508d685c48f5d%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636843476632252646&amp;sdata=BPs3N2CbfNepxGyN4Mkt9ct863GiJ6kWgPLWRlFVEA4%3D&amp;reserved=0
    Amadeus House, Floral Street, London  WC2E 9DPUK
    @shapeblue
      
     
    
    
    -----Original Message-----
    From: Andrija Panic <andrija.panic@shapeblue.com> 
    Sent: 29 January 2019 00:54
    To: users@cloudstack.apache.org
    Subject: RE: how to run rhel 6.x VM as PV VM on xenserver 7.1CU1?
    
    Additionally, I expect that following table is correct in sense of paper vs reality, but
always good to check: https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.citrix.com%2Fen-us%2Fxenserver%2F7-1%2Fsystem-requirements%2Fguest-os-support.html&amp;data=02%7C01%7Cyipzhang%40adobe.com%7Caf6dbfb87b194e4324f508d685c48f5d%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636843476632252646&amp;sdata=xoXdtfkvGuiLmagT%2Fy%2Fv8sGsNyJ5G2BJSnCjdRbauug%3D&amp;reserved=0
    
    
    andrija.panic@shapeblue.com
    https://na01.safelinks.protection.outlook.com/?url=www.shapeblue.com&amp;data=02%7C01%7Cyipzhang%40adobe.com%7Caf6dbfb87b194e4324f508d685c48f5d%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636843476632262651&amp;sdata=ZQ2uFwhpHXEyz1xHFrJ3ry8wBKdEzp99YhUQnIqoFWM%3D&amp;reserved=0
    Amadeus House, Floral Street, London  WC2E 9DPUK @shapeblue
      
     
    
    
    -----Original Message-----
    From: Andrija Panic <andrija.panic@shapeblue.com>
    Sent: 29 January 2019 00:52
    To: users@cloudstack.apache.org
    Subject: RE: how to run rhel 6.x VM as PV VM on xenserver 7.1CU1?
    
    Hi Yiping,
    
    If you do the following SQL:    SELECT * FROM guest_os_hypervisor WHERE hypervisor_type="XenServer"
and hypervisor_version="7.1.0" AND guest_os_id IN (SELECT id FROM guest_os WHERE display_name="CentOS
6.4 (64-bit)");
    +-------------------+
    | guest_os_name     |
    +-------------------+
    | CentOS 6 (64-bit) |
    +-------------------+
    
    It basically shows you, that for ACS OS type called "CentOS 6.4 (64-bit)", this is translated/matches/mapped
to the "CentOS 6 (64-bit)" as seen from the XenServer 7.1.x hypervisor. 
    Now, there IS a possibility that some of these mappings is incorrect...
    I would just go to XenServer and try to deploy manually (via XenCenter etc) a VM with
selecting the OS type from above SQL results set (CentOS 6 (64-bit)) and observe if it gets
provisioned as HVM or PV - if XenServer brings it as HVM, then you can see it's XenServer
making it HVM. But if XenServer starts that manually deployed VM as PV - then we can assume
some wrong mapping from ACS side.
    
    If you have time to test this, I'm also interested in root cause - since I saw with 7.1.x
XenServer that you can't even restore a VM from snapshot, if you change OS type on existing
VM in ACS from, i.e. centos 6.4 to 6.5 etc.
    
    Kind regards,
    Andrija
    
    andrija.panic@shapeblue.com
    https://na01.safelinks.protection.outlook.com/?url=www.shapeblue.com&amp;data=02%7C01%7Cyipzhang%40adobe.com%7Caf6dbfb87b194e4324f508d685c48f5d%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636843476632262651&amp;sdata=ZQ2uFwhpHXEyz1xHFrJ3ry8wBKdEzp99YhUQnIqoFWM%3D&amp;reserved=0
    Amadeus House, Floral Street, London  WC2E 9DPUK @shapeblue
      
     
    
    
    -----Original Message-----
    From: Yiping Zhang <yzhang@marketo.com>
    Sent: 28 January 2019 23:16
    To: users@cloudstack.apache.org
    Subject: how to run rhel 6.x VM as PV VM on xenserver 7.1CU1?
    
    Hi, All:
    
    I have a large number of RHEL 6.x VM instances running in our ACS environment. Last time
when I upgraded our XenServer from 6.5SP1 to 7.0,   I have to change my templates to assign
OS TYPE as “RHEL 6.4 (64bit)” so that my VM instances can be started as PV instances.
Anything above “RHEL 6.5 (64bits)” would be started as HVM instances and they would get
stuck during boot.
    
    Last week, after I upgraded my lab hypervisors to use XenServer 7.1CU1,  all my (lab)
rhel 6.x VM instances would get started as HVM instances, thus stuck during boot.  I even
tried to change template’s OS TYPE to other types such as “rhel 5.10/5.0/6.0/, Other PV(64bit)”
etc without any luck.
    
    What did I miss?  My lab is running ACS 4.11.2.0 packages from Shapeblue.  According to
Citrix document, https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.citrix.com%2Fen-us%2Fxenserver%2F7-1%2Fdownloads%2Fvm-users-guide.pdf&amp;data=02%7C01%7Cyipzhang%40adobe.com%7Caf6dbfb87b194e4324f508d685c48f5d%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636843476632262651&amp;sdata=9Y9I8YNoj0gh%2B10zqjh99LFl9rMmLT1Vo0EVFRWPv38%3D&amp;reserved=0,
 RHEL 6.x should always be started as PV instance. So why I only get HVM instances instead?
    
    Is it CloudStack or XenServer which decides an instance to be started as PV or HVM instance?
    
    Thanks, all helps are appreciated.
    
    Yiping
    
    
    
    

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