xl - no support for DRBD disks?

xl - no support for DRBD disks?

[Shriram Rajagopalan]

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I tried to create a domain with drbd based disk as the backend
"drbd:<resourcename>,..," and I get a "unknown disk type" error.

I can spin out a patch if needed, but just wanted to know apriori if
this was left out for any specific reason.

shriram

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Re: xl - no support for DRBD disks?

[Ian Campbell]

On Sun, 2011-05-08 at 04:24 +0100, Shriram Rajagopalan wrote:
> I tried to create a domain with drbd based disk as the backend
> "drbd:<resourcename>,..," and I get a "unknown disk type" error.
> 
> I can spin out a patch if needed, but just wanted to know apriori if
> this was left out for any specific reason.

Not deliberate AFAIK.

The intention is to make xl callout to a script whose name is derived
from the initial part of the disk definition (e.g. the drdb part,
similarly for iscsi and so on).

IanJ was looking at overhauling disk handling, including that
functionality.

Ian.

Re: xl - no support for DRBD disks?

[Shriram Rajagopalan]

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On Mon, May 9, 2011 at 3:48 AM, Ian Campbell <Ian.Campbell@citrix.com>wrote:

> On Sun, 2011-05-08 at 04:24 +0100, Shriram Rajagopalan wrote:
> > I tried to create a domain with drbd based disk as the backend
> > "drbd:<resourcename>,..," and I get a "unknown disk type" error.
> >
> > I can spin out a patch if needed, but just wanted to know apriori if
> > this was left out for any specific reason.
>
> Not deliberate AFAIK.
>
> The intention is to make xl callout to a script whose name is derived
> from the initial part of the disk definition (e.g. the drdb part,
> similarly for iscsi and so on).
>
> So, the "callout to a script" functionality is already available as part of
the scripts in /etc/xen/scripts/. This includes a call out to
block-drbd (supplied by DRBD package)
block-nbd, block-enbd (supplied as part of xen tree). Cant we just re-use
them
or is there some xend specific aspect to those scripts?

shriram

> IanJ was looking at overhauling disk handling, including that
> functionality.
>
> Ian.
>
>

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Re: xl - no support for DRBD disks?

[Ian Campbell]

On Mon, 2011-05-09 at 15:38 +0100, Shriram Rajagopalan wrote:
> On Mon, May 9, 2011 at 3:48 AM, Ian Campbell <Ian.Campbell@citrix.com>
> wrote:
>         
>         On Sun, 2011-05-08 at 04:24 +0100, Shriram Rajagopalan wrote:
>         > I tried to create a domain with drbd based disk as the
>         backend
>         > "drbd:<resourcename>,..," and I get a "unknown disk type"
>         error.
>         >
>         > I can spin out a patch if needed, but just wanted to know
>         apriori if
>         > this was left out for any specific reason.
>         
>         
>         Not deliberate AFAIK.
>         
>         The intention is to make xl callout to a script whose name is
>         derived
>         from the initial part of the disk definition (e.g. the drdb
>         part,
>         similarly for iscsi and so on).
>         
> So, the "callout to a script" functionality is already available as
> part of the scripts in /etc/xen/scripts/. This includes a call out to 
> block-drbd (supplied by DRBD package) block-nbd, block-enbd (supplied
> as part of xen tree). Cant we just re-use them
> or is there some xend specific aspect to those scripts?

The plan is to reuse them.

> 
> shriram
> 
>         IanJ was looking at overhauling disk handling, including that
>         functionality.
>         
>         Ian.
>         
>