> On 12. Aug 2018, at 10:07, Emmanuel Dreyfus <m...@netbsd.org> wrote: > > On Sun, Aug 12, 2018 at 09:55:27AM +0200, J. Hannken-Illjes wrote: >>> You mean you cannot at the same tme snapshot /mount0 on fss0 and >>> /mount1 on fss1? >> >> Yes, you have to create the snapshot on /mount0 and once it has been >> created you create the snapshot on /mount1. > > Where is that limitation? I would not exepect to get such a limitation > when working on both a different mount and fss device. The simplest deadlock is: While creating a snapshot "/mount0" lookup "/mount0/file", it will block as "/mount0" is suspended. The lookup holds a lock on "/". Now snapshot "/ "and trying to suspend "/" will block as the lookup has the root vnode locked. There are too many other deadlock scenarios this could ever work. -- J. Hannken-Illjes - hann...@eis.cs.tu-bs.de - TU Braunschweig (Germany)
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device Robert Elz
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device Robert Elz
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device Robert Elz
- Re: Finding an available fss device J. Hannken-Illjes
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device J. Hannken-Illjes
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device J. Hannken-Illjes
- Re: Finding an available fss devic... Emmanuel Dreyfus
- Re: Finding an available fss d... J. Hannken-Illjes
- Re: Finding an available fss device Taylor R Campbell
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss device Edgar Fuß
- Re: Finding an available fss device J. Hannken-Illjes
- Re: Finding an available fss device Taylor R Campbell
- Re: Finding an available fss device J. Hannken-Illjes
- Re: Finding an available fss device Emmanuel Dreyfus
- Re: Finding an available fss devic... J. Hannken-Illjes