Re: [Thinstation-developer] RC4: Worries about USB mount point scheme

[S. J. v. H. <sv...@dd...>]

On Sun, 2007-12-23 at 22:08 +1100, TrevorB wrote:
> On Sun, 2007-12-23 at 11:55 +0200, Mike Eriksen wrote:
> > On Dec 23, 2007 8:32 AM, TrevorB <tre...@us...> w=
rote:
> > > On Sat, 2007-12-22 at 22:17 +0200, Mike Eriksen wrote:
> > > > I've been fighting for a few hours to get RC4 to read my
> > > > thinstation.conf.user from my USB stick. I haven't done this for a
> > > > long while, so the problem may have existed in the previous RCs as
> > > > well.
> > >
> > > The last usb change just looked at changing the -t (type) part of the
> > > mount and didn't try to play with the devices etc.
> > > >
> > > > The problem:
> > > > My stick is mounted as /mnt/usbdevice/sda1 and works nicely. Can re=
ad
> > > > and write from/to it just fine. Hence my ts.conf.buildtime has set
> > > > STORAGE_PATH=3D/mnt/usbdevice/sda1 But I failed to make it host
> > > > /thinstation.profile/thinstation.user.
> > > >
> > > > After bumbing up the verbose level and reading the log file, I
> > > > realized it - during boot - looked at the stick as /dev/sdb! As doe=
s
> > > > Debian if I let this one boot the same computer. At this time, I ha=
d
> > > > mounted the stick in the right front USB slot. Now I just moved it =
to
> > > > the left slot - et viol=C3=A1 - it works!
> > > >
> > > > I find it very worryingly that
> > > > 1) each slot seems to have its own device name,
> > > Same as debian etc.?
> > >
> > > > 2) that RC4 doesn't follow the same naming convention at least.
> > > Confused. Which convention (ie. should it mount them as a different
> > > device or should it always pick the first)? Personally it should crea=
te
> > > a /mnt/usbdevice/<disk/partition name> or if it can't find a disk nam=
e,
> > > then /mnt/usbdevice/<device>......
> > >
> > > What happens on 2.2 (which is using the same kernel)?
> >=20
> > Well, it could easily just be me who is confused, but I had no idea
> > that two front USB slots would be assigned to two different /dev/sdX.
> >=20
> > The question is then: is it smart that TS names the device
> > /mnt/usbdevice/sda# regardless if the devices is /dev/sda or /dev/sdb
> > or...
>=20
> I don't think so...
>=20
> If we could put a few more smarts in there to name it according to the
> Volume name if it exists (which only does on a few of my devices) or
> maybe use something more generic (my openSUSE 10.2 just names them disk,
> disk-1, disk-2 if they don't have any volume info), then that might be
> smarter - and a little more predictable.

When I test this on a Ubuntu workstation, the USB-stick always gets the
same /dev/sdX assigned to it. No matter which of the four available USB
slots is used.

So I don't think that it should use a different /dev/sdX for every slot.
I think it should use the first one available and move on from there.

>=20
> Anyway, it's not something that we should be playing with for 2.2.1 (I
> don't think).

As I think a little bit about this, I seem to remember noticing this
behavior with 2.2 also. So indeed maybe it's better to look at in 2.3.

Sander

>=20
> Trevor B
> >=20
> > Maybe this is only a problem when reading the profile from a USB
> > stick, but it certainly fooled me.
> >=20
> > Merry Christmas!
> >=20
> > Mike
> >=20
> > >
> > > Trevor B
> > >
> > > >
> > > > Hardware: VIA Epia MS10000.
> > > >
> > > > Mike
> > >
> > >
> >=20
> >=20
> >=20
>=20
>=20
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