Re: [PROBLEM] nbd requests become stuck when devices watched by inotify emit udev uevent changes

[yukuai (C)]

在 2022/05/16 20:17, Josef Bacik 写道:

> > Hi, Josef
> >
> > This seems to try to fix the same problem that I described here:
> >
> > nbd: fix io hung while disconnecting device
> > https://lists.debian.org/nbd/2022/04/msg00207.html
> >
> > There are still some io that are stuck, which means the devcie is
> > probably still opened. Thus nbd_config_put() can't reach here.
> > I'm afraid this patch can't fix the io hung.
> >
> > Matthew, can you try a test with this patch together with my patch below
> > to comfirm my thought?
> >
> > nbd: don't clear 'NBD_CMD_INFLIGHT' flag if request is not completed
> > https://lists.debian.org/nbd/2022/04/msg00212.html.
>
> Re-submit this one, but fix it so we just test the bit to see if we need to skip
> it, and change it so we only CLEAR when we're sure we're going to complete the
> request.  Thanks,

Ok, thanks for your advice. I'll send a new version.

BTW, do you have any suggestions on other patches of the patchset?

https://lore.kernel.org/all/20220426130746.885140-1-yukuai3@xxxxxxxxxx/

Thanks,
Kuai
> Josef
> .