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SubjectRe: [PATCH] xen-blkback: Switch to closed state after releasing the backing device
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On 29/08/18 11:23, Valentin Vidic wrote:
> On Wed, Aug 29, 2018 at 10:43:48AM +0200, Juergen Gross wrote:
>> I think this should be an action triggered by the frontend, not by dom0
>> (xen tools will always set "online" to 0 when removing a device, AFAIK).
>>
>> I'm not sure this is relevant, but I realized this behavior is changed
>> by your patch.
>
> Can't find any place in xen-blkfront.c (or the rest of the kernel) where
> the "online" value gets set, so it seems xen tools in dom0 is the only
> thing that modifies this Xenbus node?
>

I think so, yes.

It will be set to "1" at device creation and to "0" when removing the
device, both times by Xen tools.


Juergen

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