Re: Async backup

2023-07-14 Thread Jithin Raju 
The details are explained here: 
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Separate+creation+and+backup+operations+for+a+volume+snapshot


-Jithin

From: Granwille Strauss 
Date: Tuesday, 11 July 2023 at 1:20 PM
To: users@cloudstack.apache.org 
Cc: Alex Mattioli , Nikolaos Tsinganos 

Subject: Re: Async backup

HI Alex

Sorry, I said this wrong, when making a snapshot a copy is first made to the 
primary storage, not management disk, and once done its moved to the secondary 
storage and then deleted from primary. This is explained here: 
https://github.com/apache/cloudstack/issues/6836#issuecomment-1285524454

 

On 7/10/23 19:50, Alex Mattioli wrote:

all snapshots make a local copy to the management server disk before sending it 
to the secondary storage locations, yes.



What exactly do you mean by that?



From: Granwille Strauss 
<mailto:granwi...@namhost.com.INVALID>

Sent: Monday, July 10, 2023 1:21 PM

To: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org>

Cc: Nikolaos Tsinganos <mailto:ni...@dataways.gr>

Subject: Re: Async backup





Correct me if I am wrong, all snapshots make a local copy to the management 
server disk before sending it to the secondary storage locations, yes. Async or 
not. But yes, I believe that is the case. However, when async is enabled you 
get to use and work on other tasks with the management server, while it does 
the snapshot process in the background. Whereas having async disabled, you are 
restricted from doing other task on the management server until the snapshot 
process completes, that's how I understand it.

On 7/10/23 13:04, Nikolaos Tsinganos wrote:



Thank you, Granwille for your prompt answer.







Can you elaborate on the "locally"  and "storage location" terms?



On a host that has multiple primary storages (e.g. NFS and some other storage 
over iSCSI)  but no local disks are used, what is considered as 'locally'?



Also, by "storage location"  do you mean the secondary storage?







Regards,



Nikolaos







From: Granwille Strauss 
<mailto:granwi...@namhost.com><mailto:granwi...@namhost.com><mailto:granwi...@namhost.com>



Sent: Monday, July 10, 2023 1:48 PM



To: 
users@cloudstack.apache.org<mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org>



Cc: Nikolaos Tsinganos 
<mailto:ni...@dataways.gr><mailto:ni...@dataways.gr><mailto:ni...@dataways.gr>



Subject: Re: Async backup







In short and in layman's terms, it makes the volume snapshot, stores it locally 
and then in the background transfers it to the storage location. This helps 
with server resource usage. But see attached screenshot for a detailed answer.



On 7/10/23 12:38, Nikolaos Tsinganos wrote:



Hi All,







Can somebody explain what the "Async backup" option does while taking volume 
snapshot?







Regards,



Nikolaos





--



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Re: Async backup

2023-07-11 Thread Granwille Strauss 

HI Alex

Sorry, I said this wrong, when making a snapshot a copy is first made to 
the primary storage, _not management disk_, and once done its moved to 
the secondary storage and then deleted from primary. This is explained 
here: 
https://github.com/apache/cloudstack/issues/6836#issuecomment-1285524454


On 7/10/23 19:50, Alex Mattioli wrote:

all snapshots make a local copy to the management server disk before sending it 
to the secondary storage locations, yes.

What exactly do you mean by that?

From: Granwille Strauss
Sent: Monday, July 10, 2023 1:21 PM
To:users@cloudstack.apache.org
Cc: Nikolaos Tsinganos
Subject: Re: Async backup


Correct me if I am wrong, all snapshots make a local copy to the management 
server disk before sending it to the secondary storage locations, yes. Async or 
not. But yes, I believe that is the case. However, when async is enabled you 
get to use and work on other tasks with the management server, while it does 
the snapshot process in the background. Whereas having async disabled, you are 
restricted from doing other task on the management server until the snapshot 
process completes, that's how I understand it.
On 7/10/23 13:04, Nikolaos Tsinganos wrote:

Thank you, Granwille for your prompt answer.



Can you elaborate on the "locally"  and "storage location" terms?

On a host that has multiple primary storages (e.g. NFS and some other storage 
over iSCSI)  but no local disks are used, what is considered as 'locally'?

Also, by "storage location"  do you mean the secondary storage?



Regards,

Nikolaos



From: Granwille Strauss<mailto:granwi...@namhost.com>

Sent: Monday, July 10, 2023 1:48 PM

To:users@cloudstack.apache.org<mailto:users@cloudstack.apache.org>

Cc: Nikolaos Tsinganos<mailto:ni...@dataways.gr>

Subject: Re: Async backup



In short and in layman's terms, it makes the volume snapshot, stores it locally 
and then in the background transfers it to the storage location. This helps 
with server resource usage. But see attached screenshot for a detailed answer.

On 7/10/23 12:38, Nikolaos Tsinganos wrote:

Hi All,



Can somebody explain what the "Async backup" option does while taking volume 
snapshot?



Regards,

Nikolaos


--

Regards / Groete
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RE: Async backup

2023-07-10 Thread Alex Mattioli 
> all snapshots make a local copy to the management server disk before sending 
> it to the secondary storage locations, yes.

What exactly do you mean by that?

From: Granwille Strauss 
Sent: Monday, July 10, 2023 1:21 PM
To: users@cloudstack.apache.org
Cc: Nikolaos Tsinganos 
Subject: Re: Async backup


Correct me if I am wrong, all snapshots make a local copy to the management 
server disk before sending it to the secondary storage locations, yes. Async or 
not. But yes, I believe that is the case. However, when async is enabled you 
get to use and work on other tasks with the management server, while it does 
the snapshot process in the background. Whereas having async disabled, you are 
restricted from doing other task on the management server until the snapshot 
process completes, that's how I understand it.
On 7/10/23 13:04, Nikolaos Tsinganos wrote:

Thank you, Granwille for your prompt answer.



Can you elaborate on the "locally"  and "storage location" terms?

On a host that has multiple primary storages (e.g. NFS and some other storage 
over iSCSI)  but no local disks are used, what is considered as 'locally'?

Also, by "storage location"  do you mean the secondary storage?



Regards,

Nikolaos



From: Granwille Strauss <mailto:granwi...@namhost.com>

Sent: Monday, July 10, 2023 1:48 PM

To: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org>

Cc: Nikolaos Tsinganos <mailto:ni...@dataways.gr>

Subject: Re: Async backup



In short and in layman's terms, it makes the volume snapshot, stores it locally 
and then in the background transfers it to the storage location. This helps 
with server resource usage. But see attached screenshot for a detailed answer.

On 7/10/23 12:38, Nikolaos Tsinganos wrote:

Hi All,



Can somebody explain what the "Async backup" option does while taking volume 
snapshot?



Regards,

Nikolaos


--

Regards / Groete
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RE: Async backup

2023-07-10 Thread Nikolaos Tsinganos 
Hi Granwille, 

  

Thanks for clarifying this!

  

  

Regards, 

Nikolaos

  

  

From: Granwille Strauss  
Sent: Monday, July 10, 2023 2:21 PM
To: users@cloudstack.apache.org
Cc: Nikolaos Tsinganos 
Subject: Re: Async backup

  

Correct me if I am wrong, all snapshots make a local copy to the management 
server disk before sending it to the secondary storage locations, yes. Async or 
not. But yes, I believe that is the case. However, when async is enabled you 
get to use and work on other tasks with the management server, while it does 
the snapshot process in the background. Whereas having async disabled, you are 
restricted from doing other task on the management server until the snapshot 
process completes, that's how I understand it. 

On 7/10/23 13:04, Nikolaos Tsinganos wrote:

Re: Async backup

2023-07-10 Thread Granwille Strauss 
Correct me if I am wrong, all snapshots make a local copy to the 
management server disk before sending it to the secondary storage 
locations, yes. Async or not. But yes, I believe that is the case. 
However, when async is enabled you get to use and work on other tasks 
with the management server, while it does the snapshot process in the 
background. Whereas having async disabled, you are restricted from doing 
other task on the management server until the snapshot process 
completes, that's how I understand it.


On 7/10/23 13:04, Nikolaos Tsinganos wrote:

Thank you, Granwille for your prompt answer.

Can you elaborate on the "locally"  and "storage location" terms?
On a host that has multiple primary storages (e.g. NFS and some other storage 
over iSCSI)  but no local disks are used, what is considered as 'locally'?
Also, by "storage location"  do you mean the secondary storage?

Regards,
Nikolaos

From: Granwille Strauss  
Sent: Monday, July 10, 2023 1:48 PM

To:users@cloudstack.apache.org
Cc: Nikolaos Tsinganos
Subject: Re: Async backup

In short and in layman's terms, it makes the volume snapshot, stores it locally 
and then in the background transfers it to the storage location. This helps 
with server resource usage. But see attached screenshot for a detailed answer.
On 7/10/23 12:38, Nikolaos Tsinganos wrote:
Hi All,

Can somebody explain what the "Async backup" option does while taking volume 
snapshot?

Regards,
Nikolaos


--
Regards / Groete

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*e:* granwi...@namhost.com
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RE: Async backup

2023-07-10 Thread Nikolaos Tsinganos 
Thank you, Granwille for your prompt answer.

Can you elaborate on the "locally"  and "storage location" terms?
On a host that has multiple primary storages (e.g. NFS and some other storage 
over iSCSI)  but no local disks are used, what is considered as 'locally'?
Also, by "storage location"  do you mean the secondary storage?

Regards, 
Nikolaos

From: Granwille Strauss  
Sent: Monday, July 10, 2023 1:48 PM
To: users@cloudstack.apache.org
Cc: Nikolaos Tsinganos 
Subject: Re: Async backup

In short and in layman's terms, it makes the volume snapshot, stores it locally 
and then in the background transfers it to the storage location. This helps 
with server resource usage. But see attached screenshot for a detailed answer. 
On 7/10/23 12:38, Nikolaos Tsinganos wrote:
Hi All, 

Can somebody explain what the "Async backup" option does while taking volume 
snapshot?

Regards, 
Nikolaos

-- 

Regards / Groete

Granwille Strauss  //  Senior Systems Admin

e: mailto:granwi...@namhost.com
m: tel:+264813231260
w: https://www.namhost.com/




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Re: Async backup

2023-07-10 Thread Granwille Strauss 
In short and in layman's terms, it makes the volume snapshot, stores it 
locally and then in the background transfers it to the storage location. 
This helps with server resource usage. But see attached screenshot for a 
detailed answer.


On 7/10/23 12:38, Nikolaos Tsinganos wrote:

Hi All,

Can somebody explain what the "Async backup" option does while taking volume 
snapshot?

Regards,
Nikolaos


--
Regards / Groete

 Granwille Strauss  // Senior Systems Admin

*e:* granwi...@namhost.com
*m:* +264 81 323 1260 
*w:* www.namhost.com 





Namhost Internet Services (Pty) Ltd,

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