On Thu, Oct 01, 2015 at 02:42:15PM -0400, Ian Stakenvicius wrote:
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> Since this conversation is now technical rather than news-item
> related, I've changed to a new thread.
> 
> On 01/10/15 02:17 PM, J. Roeleveld wrote:
> > On 1 October 2015 17:49:15 CEST, Mike Gilbert
> > <floppym@gentoo.org> wrote:
> >>>>>>>> On 28/09/15 06:58 PM, William Hubbs wrote:
> >>>>>>>>> Also, we are dropping the use of the -O switch
> >>>>>>>>> for mount/umount -a. This is being dropped
> >>>>>>>>> because it is util-linux specific and not
> >>>>>>>>> compatible with busybox.
> >>>>>>>> 
> >> 
> >> The _netdev option is really there to support things like
> >> iSCSI, where you are mounting a filesystem like ext4 from a
> >> block device which requires network connectivity.
> >> 
> >> I think some changes are needed here, because this change to 
> >> localmount is quite like to break this usage.
> > 
> > All,
> > 
> > I had a thought. Not sure if this is possible and if it is, it
> > would mean a change to the fstab for people using iSCSI.
> > 
> > 1) Add an udev rule to name iSCSI devices differently. (Currently
> > sd??, maybe to something like scs??) 2) Have 'localmount' ignore
> > those entries in fstab. 3) Have 'netmount' (or similar) mount
> > those entries.
> > 
> > I haven't looked into the current scripts yet, so if this doesn't
> > make any sense at all, let me know. I will investigate this more
> > over the weekend.
> > 
> 
> At this point, we need to verify the whole reason for its removal is
> actually accurate -- it seems it was dropped due to bug 468600,
> which is about -O [no]_netdev not being recognized by busybox mount.
>  However, there are comments in the bug and notes in busybox
> documentation which seems to indicate that -O support has been in
> busybox since 1.20.2, and current stable is 1.23.1-r1..  If the
> issue is still confirmed, then we can look into alternative methods
> of handling iscsi.

The original plan was to move to a point where everyone puts _netdev in
their fstab for network mounts on Linux so that we don't have to track
file system types like we do in OpenRC right now.  On Linux,

mount -a -O _netdev

would mount all network file systems and

umount -a -O _netdev

would unmount them.  On busybox, the last time I checked, umount -a
doesn't support -O at all.

I'm thinking the best way to handle iscsi, since it requires network
connectivity, would be to just have nofail on the fstab entries for it
instead of _netdev, that is if iscsi can pick up the mounts after
network connectivity comes up.

William