Something since June 8th clobbers my disk...

[Paul B. Mahol]

On 6/11/09, Dan Allen <danallen46 at airwired.net> wrote:
> I sync with 7-STABLE almost every day.  I build everything on a
> Toshiba U205 Satellite.  Things are fine for months on end.
>
> I did this on June 8th.  Everything was fine.
>
> I did this on June 10th.  The machine no longer booted.  The entire
> root partition got clobbered.  I reinstalled a snapshot of 7-STABLE
> from May 28th that I had put on a DVD.  Everything was once again fine.
>
> I then sync'd again this morning June 11th with 7-STABLE, did a full
> build, and reproducibly, BOOM - the entire root partition got
> clobbered.  Gone.  Again.  After the reboot it just comes up with:
>
> BTX loader 1.00  BTX version is 1.02
> Consoles: internal video/keyboard
> BIOS drive A: is disk0
> BIOS drive C: is disk1
>
> and stops.  Nothing else is printed.  There is no choice of how to
> boot.  There is no files for me to send, no log files to inspect, no
> remnants.  I unfortunately did not see where in the build this
> happened.  My build does the canonical steps exactly as outlined in /
> usr/src/Makefile  and then does a reboot.  It builds userland and the
> kernel.
>
> When I inspect it from the bootable DVD the partition that my root
> filesystem was in has no association with it having the root any
> more.  The partition is listed, but it looks like it had been freshly
> partitioned.
>
> Something is very, very wrong.
>
> Ideas?

Are you using ZFS on root partition?

-- 
Paul