zfs locking

Slawa Olhovchenkov slw at zxy.spb.ru
Tue Jan 14 14:13:49 UTC 2014


On Tue, Jan 14, 2014 at 04:03:35PM +0200, Andriy Gapon wrote:

> on 14/01/2014 15:36 Slawa Olhovchenkov said the following:
> >                                 DTRACE_PROBE2(l2arc__read, vdev_t *, vd,
> >                                     zio_t *, rzio);
> >                                 ARCSTAT_INCR(arcstat_l2_read_bytes, // arc_read+2137
> >                                     hdr->b_l2hdr->b_asize);
> > 
> >                                 if (*arc_flags & ARC_NOWAIT) {
> >                                         zio_nowait(rzio);
> >                                         return (0);
> >                                 }
> > 
> >                                 ASSERT(*arc_flags & ARC_WAIT);
> >                                 if (zio_wait(rzio) == 0)
> >                                         return (0);
> > 
> >                                 /* l2arc read error; goto zio_read() */
> > 
> > Is this locking issue?
> 
> This looks like a bug that was already fixed in illumos and FreeBSD head.
> What version of FreeBSD do you use?
> See r258388 and r258389.

10.0-BETA1

I don't see commit to 10.x


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