[DRBD-user] drbd uml 2.6.6
matteo at sif.it
Thu May 13 11:15:53 CEST 2004
On Thu, 13 May 2004, Mark Olliver wrote:
> >drbd related:
> > drbd seems to work fine, as well as module, and as "monolithic" build.
> > XFS seems to work on top of DRBD within uml, and survives a tiobench.
> > but sometimes, if you copy many files, it get stuck waiting for some xfs
> > internal semaphore to be released, which never happens.
> > this only shows on top of drbd, not using the underlying ubd directly,
> > but seems to be a xfs internal problem, since it even shows when DRBD
> > is "virgin standalone", just passing request to the lower level device,
> > and passing end_io events up to the upper levels. with a recently
> > introduce atomic counter I can *prove* that drbd did the correct endio.
> > only xfs seems to not up its own semaphore properly...
> > as soon as this is reproducable in real systems (where currently xfs on
> > top of DRBD seems to have all sorts of other weird problems, which I
> > doubt are DRBDs fault... only xfs does not expect the restrictions that
> > the DRBD requests queue imposes), this needs to be sorted out with the
> > XFS guys...
maybe it's related to this:
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