Volumes become unavailable during snapshot

[Rafael Weingartner <ra...@gmail.com>]

Hi folks,

I have some virtual machines running MYSQL databases, to ease the
management the database data is stored on a volume that is attached to the
VM. So, I set up recurring snapshots for those volumes. I thought I would
not have any problems with that. However, every time CS starts the snapshot
process the volumes become unavailable to the VMS they are attached and the
operating system (Linux) change the file system to read only thinking that
the device can have some problems.

is there any way to work this around? Is this the normal behaviour? I
thought that snapshots would not interfere with the volumes on a running VM.


-- 
Rafael Weingärtner

Re: Volumes become unavailable during snapshot

[Rafael Weingartner <ra...@gmail.com>]

Well, I am using Xen hyper-visor 4.1 with Xen XCP 1.6 (if I am not
mistaken) and CS 4.1.1.

Could it be any configuration that I must adjust on XCP or Xen hyper-visor?

Re: Volumes become unavailable during snapshot

[France <ma...@isg.si>]

This is not what i get using XS 6.0.2 and CS 4.1.1
Snapshots do not interfere with running instances at all.
I would say, that is _not_ normal behavior.

On 10/2/14 3:16 PM, Rafael Weingartner wrote:
> Hi folks,
>
> I have some virtual machines running MYSQL databases, to ease the
> management the database data is stored on a volume that is attached to the
> VM. So, I set up recurring snapshots for those volumes. I thought I would
> not have any problems with that. However, every time CS starts the snapshot
> process the volumes become unavailable to the VMS they are attached and the
> operating system (Linux) change the file system to read only thinking that
> the device can have some problems.
>
> is there any way to work this around? Is this the normal behaviour? I
> thought that snapshots would not interfere with the volumes on a running VM.
>
>