On Mon, Jul 13, 2020 at 09:59:43PM +0200, Martin Wilck wrote:
> On Mon, 2020-07-13 at 11:56 +0200, Zdenek Kabelac wrote:
> >
> > > @Zdenek, do we have to protect every libdm call, or is it
> > > sufficient
> > > to protect only dm_task_run(), as lixiaokeng suggested?
> > >
> >
> > Hi
> >
> >
On Mon, 2020-07-13 at 11:56 +0200, Zdenek Kabelac wrote:
>
> > @Zdenek, do we have to protect every libdm call, or is it
> > sufficient
> > to protect only dm_task_run(), as lixiaokeng suggested?
> >
>
> Hi
>
> It's actually hard to answer it in a simple way.
> Several properties are held in
On Mon, 2020-07-13 at 12:13 +0200, Zdenek Kabelac wrote:
> Dne 13. 07. 20 v 12:08 Martin Wilck napsal(a):
> >
> > Ben has already added support for dm_hold_control_dev() in
> > libmultipath
> > (e24d8b1 ("libmutipath: don't close fd on dm_lib_release")). But
> > this
> > doesn't protect us from
Dne 13. 07. 20 v 12:08 Martin Wilck napsal(a):
Hi Zdenek,
On Mon, 2020-07-13 at 11:56 +0200, Zdenek Kabelac wrote:
Dne 13. 07. 20 v 11:21 Martin Wilck napsal(a):
Hi Lixiaokeng,
@Zdenek, do we have to protect every libdm call, or is it
sufficient
to protect only dm_task_run(), as lixiaokeng
Hi Zdenek,
On Mon, 2020-07-13 at 11:56 +0200, Zdenek Kabelac wrote:
> Dne 13. 07. 20 v 11:21 Martin Wilck napsal(a):
> > Hi Lixiaokeng,
> >
> >
> > @Zdenek, do we have to protect every libdm call, or is it
> > sufficient
> > to protect only dm_task_run(), as lixiaokeng suggested?
> >
>
> Hi
>
Dne 13. 07. 20 v 11:21 Martin Wilck napsal(a):
Hi Lixiaokeng,
@Zdenek, do we have to protect every libdm call, or is it sufficient
to protect only dm_task_run(), as lixiaokeng suggested?
Hi
It's actually hard to answer it in a simple way.
Several properties are held in library static
Hi Lixiaokeng,
On Mon, 2020-07-13 at 10:15 +0800, lixiaokeng wrote:
> Hi
>
> Now the number of fd pointing /dev/mapper/control in multipathd
> process
> increases when iscsi device logs in. The reason is that wait_dmevents
> thread and uevqloop thread call _open_and_assign_control_fd
>
Hi
Now the number of fd pointing /dev/mapper/control in multipathd process
increases when iscsi device logs in. The reason is that wait_dmevents
thread and uevqloop thread call _open_and_assign_control_fd concurrently.
If lock add to _open_and_assign_control_fd fun in lvm2/libdm/libdm-iface.c,
