On Fri, Oct 23, 2020 at 12:31:05PM +0200, Hannes Reinecke wrote:
> My thoughts went more into the direction of hooking into ->submit_bio,
> seeing that it's a NULL pointer for most (all?) block drivers.
>
> But sure, I'll check how the interposer approach would turn out.
submit_bio is owned by
The 10/23/2020 13:31, Hannes Reinecke wrote:
> On 10/23/20 11:13 AM, h...@infradead.org wrote:
> > On Thu, Oct 22, 2020 at 01:54:16PM -0400, Mike Snitzer wrote:
> >> On Thu, Oct 22, 2020 at 11:14 AM Darrick J. Wong
> >>> Stupid question: Why don't you change the block layer to make it
> >>>
On 10/23/20 11:13 AM, h...@infradead.org wrote:
On Thu, Oct 22, 2020 at 01:54:16PM -0400, Mike Snitzer wrote:
On Thu, Oct 22, 2020 at 11:14 AM Darrick J. Wong
Stupid question: Why don't you change the block layer to make it
possible to insert device mapper devices after the blockdev has been
On Thu, Oct 22, 2020 at 01:54:16PM -0400, Mike Snitzer wrote:
> On Thu, Oct 22, 2020 at 11:14 AM Darrick J. Wong
> > Stupid question: Why don't you change the block layer to make it
> > possible to insert device mapper devices after the blockdev has been set
> > up?
>
> Not a stupid question.
On Wed, Oct 21, 2020 at 5:04 AM Sergei Shtepa wrote:
>
> Hello everyone! Requesting for your comments and suggestions.
>
> # blk-filter
>
> Block layer filter allows to intercept BIO requests to a block device.
>
> Interception is performed at the very beginning of the BIO request
> processing,
On Thu, Oct 22, 2020 at 11:14 AM Darrick J. Wong
wrote:
>
> On Thu, Oct 22, 2020 at 04:52:13PM +0300, Sergei Shtepa wrote:
> > The 10/22/2020 13:28, Damien Le Moal wrote:
> > > On 2020/10/22 18:43, Sergei Shtepa wrote:
> > > >
> > > > Maybe, but the problem is that I can't imagine how to
On Thu, Oct 22, 2020 at 04:52:13PM +0300, Sergei Shtepa wrote:
> The 10/22/2020 13:28, Damien Le Moal wrote:
> > On 2020/10/22 18:43, Sergei Shtepa wrote:
> > >
> > > Maybe, but the problem is that I can't imagine how to implement
> > > dm-intercept yet.
> > > How to use dm to implement
The 10/22/2020 13:28, Damien Le Moal wrote:
> On 2020/10/22 18:43, Sergei Shtepa wrote:
> >
> > Maybe, but the problem is that I can't imagine how to implement
> > dm-intercept yet.
> > How to use dm to implement interception without changing the stack
> > of block devices. We'll have to make a
On 2020/10/22 18:43, Sergei Shtepa wrote:
> The 10/22/2020 08:58, Hannes Reinecke wrote:
>> On 10/21/20 4:10 PM, Sergei Shtepa wrote:
>>> The 10/21/2020 16:31, Hannes Reinecke wrote:
I do understand where you are coming from, but then we already have a
dm-snap which does exactly what you
The 10/22/2020 08:58, Hannes Reinecke wrote:
> On 10/21/20 4:10 PM, Sergei Shtepa wrote:
> > The 10/21/2020 16:31, Hannes Reinecke wrote:
> >> I do understand where you are coming from, but then we already have a
> >> dm-snap which does exactly what you want to achieve.
> >> Of course, that would
On 10/21/20 4:10 PM, Sergei Shtepa wrote:
The 10/21/2020 16:31, Hannes Reinecke wrote:
I do understand where you are coming from, but then we already have a
dm-snap which does exactly what you want to achieve.
Of course, that would require a reconfiguration of the storage stack on
the machine,
The 10/21/2020 16:31, Hannes Reinecke wrote:
> I do understand where you are coming from, but then we already have a
> dm-snap which does exactly what you want to achieve.
> Of course, that would require a reconfiguration of the storage stack on
> the machine, which is not always possible (or
On 10/21/20 11:04 AM, Sergei Shtepa wrote:
Hello everyone! Requesting for your comments and suggestions.
# blk-filter
Block layer filter allows to intercept BIO requests to a block device.
Interception is performed at the very beginning of the BIO request
processing, and therefore does not
Hello everyone! Requesting for your comments and suggestions.
# blk-filter
Block layer filter allows to intercept BIO requests to a block device.
Interception is performed at the very beginning of the BIO request
processing, and therefore does not affect the operation of the request
processing
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