DragonFly kernel List (threaded) for 2007-05
Re: FIXING VN AND CCD DEVICES ON HEAD! Re: HEADS up on HEAD
On Sun, May 20, 2007 at 08:03:17AM +0900, YONETANI Tomokazu wrote:
> On Sat, May 19, 2007 at 02:54:07PM -0700, Matthew Dillon wrote:
> > :As you expected, my ccd partitions(/var/obj and /home) no longer mount.
> > :Do I need to dump & restore filesystems on a ccd device after the changes
> > :to ccd device?
> > Ok. They can be recovered if you haven't overwritten anything or if you
> > only tried to do an fdisk on it but otherwise did not create or edit
> > the disklabels.
> Well, new ccd wouldn't let me make any changes, and I can access these
> filesystems when I boot from 1.8, so that should be OK :)
> > Here's what you have to do.
> [detailed instruction]
By the way, I think this is worth an entry in /usr/src/UPDATING.
Oh, and is it possible to share the filesystems on ccd or vn
with 1.8.x installation after running `dd' command?
> > If your CCD or VN mount was using an MBR before, then no changes are
> > needed.. it should just work. I will note that most people using CCD
> > and VN will NOT have been using an MBR.
> > Please tell me if these steps work. Hopefully you didn't already
> > reformat your ccd :-)
> OK, I'll let you know later.
I followed the instruction, and now I get no error messages when I access
/dev/ccd0, but zero bytes can be read from/written to it. The `dd' command
gave me the following output:
# dd if=/dev/zero count=1 bs=512 of=/dev/ccd0
dd: /dev/ccd0: end of device
1+0 records in
0+0 records in
0 bytes transferred in 0.000056 secs (0 bytes/sec)
is this expected?
I changed my /etc/ccd.conf to look like this:
ccd0s0 1152 none /dev/ad0s1e /dev/ad1s1e
ccd1s0 16 CCDF_MIRROR,CCDF_UNIFORM /dev/ad0s1g /dev/ad1s1g
However, I still can't access neither of the filesystems on ccd devices.
I hope I haven't missed anything.