[dm-devel] [PATCH 0/3] multipath: fixes for SAS expanders and root FS access

[Martin Wilck]

On Mon, 2021-02-01 at 21:15 -0600, Benjamin Marzinski wrote:
> On Thu, Jan 28, 2021 at 09:45:41PM +0100, mwilck at suse.com wrote:
> > From: Martin Wilck <mwilck at suse.com>
> > 
> > Hi Christophe, hi Ben,
> > 
> > here are 3 patches I'd like to get reviewed before we create a pull
> > request. The first two are related to complex SAS setups, the
> > second
> > one is to avoid accessing the root file system in a possible
> > dangerous
> > situation.
> > 
> > Wrt 2/3: while testing it, I discovered that
> > "I_T_nexus_loss_timeout"
> > is a read-only sysfs attribute, therefore this code does nothing.
> > I considered removing it altogether, observing that the attribute
> > has
> > been read-only as long as it existed (v2.6.17, 2006). I'd like some
> > feedback beforehand, though, perhaps some distros use patched
> > kernels
> > that make this attribute r/w?
> 
> I_T_nexus_loss_timeout appears to have always been read-only on RHEL
> and
> Fedora.

Thanks. Anyway, given that we're preparing a submission to Christophe,
I'd like to give people more time for responding. We can remove this
code later.

Regards
Martin