Problem with ZFS and devices

[Gary Jennejohn]

Pawel Jakub Dawidek writes:
> On Sun, Apr 22, 2007 at 01:11:43PM +0200, Gary Jennejohn wrote:
> > I have a really strange problem with ZFS.
> >
> > I have a filesystem (mypool/scr mounted on /scr) which contains root file
> > systems for various embedded boards (arm, ppc, mips). The file systems
> > naturally contain a /dev directory.
> >
> > I have:
> > mypool/scr  devices        on                     default
> >=20
> > The device numbers a _totally_ fubar on ZFS!
> >
> > I used a tarball called dev.tar to move dev from a Linux box to my FreeBSD
> > box.
> >
> > When I unpack dev.tar under ZFS I see totally screwd up values:
> >
> > crw-r--r--  1 root  bin      5, 0xc11b0020 Feb  3 22:06 ttyCPM0
> > crw-r--r--  1 root  bin      0,   0 Feb  3 22:06 ttyCPM1
> > crw-r--r--  1 root  bin     69, 0xc11a0008 Feb  3 22:06 ttyCPM2
> > crw-r--r--  1 root  bin      0,   0 Feb  3 22:06 ttyCPM3
> > crw-r--r--  1 root  bin      0,   0 Feb  3 22:06 ttyCPM4
> > crw-r--r--  1 root  bin     69, 0xc11a0008 Feb  3 22:06 ttyCPM5
> >
> > If I unpack dev.tar under UFS (/tmp) then all device numbers are correct:
> >
> > crw-r--r--  1 root  bin    204,  46 Feb  3 22:06 ttyCPM0
> > crw-r--r--  1 root  bin    204,  47 Feb  3 22:06 ttyCPM1
> > crw-r--r--  1 root  bin    204,  48 Feb  3 22:06 ttyCPM2
> > crw-r--r--  1 root  bin    204,  49 Feb  3 22:06 ttyCPM3
> > crw-r--r--  1 root  bin    204,  50 Feb  3 22:06 ttyCPM4
> > crw-r--r--  1 root  bin    204,  51 Feb  3 22:06 ttyCPM5
> >
> > The screwed up device numbers prevent me from using my FreeBSD box as the
> > server for my embedded boards.
> >
> > Even weirder:
> >
> > root:peedub:~:bash:1> cd /scr/eldk-4.1/arm/arm/dev
> > root:peedub:dev:bash:2> mknod ttyCPM0 c 204 46
> > root:peedub:dev:bash:3> ls -l
> > total 1
> > crw-r--r--  1 root  bin    0,   0 Apr 22 13:02 ttyCPM0
> >
> > Any ideas WTF is going here? Is this a pathological problem with ZFS?
> 
> I just committed a fix. Can you update and confirm it works for you?
> 
> PS. Thanks for the kind bug report.
> 

I'll check it out ASAP. Thanks for the quick fix. I was just very surprised
to discover that the entries in dev were so weird and I guess I got a little
carried away with the email. Hope I didn't offend you.

---
Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg garyjATdenxDOTde