CmdLnKid writes: > On Sun, 16 Nov 2008 21:29 -0000, hartzell wrote: > > > George Hartzell writes: > > > > > > I have an HP DL360 with a pair of 1TB seagate disks that's been > > > running -STABLE with a ZFS root partition set up using the tools > > > available here: > > > > > > http://yds.coolrat.org/zfsboot.shtml > > > > > > It's been working great. As part of trying to understand what's going > > > on, I csup'ed to -RELENG earlier today and rebuilt/installed the > > > kernel and world whilst running on the DL360, so everything should be > > > current. > > > > > > I tried to move the disks into an HP DL320 G4 and it fails to boot > > > because it can't find /dev/mirror/boot (which it wants to mount onto > > > /strap and then parts get nullfs'ed onto /boot and /rescue). It gives > > > me the opportunity to start a shell, and from that shell I can do a > > > zfs mount -a and get all of the zfs filesystems mounted, but there's > > > nothing in /dev/mirror. No gmirror status and list are silent. > > > > > > I can move the disks back into the older machine and they work fine. > > > > > > I've run fdisk -s ad4 and bsdlabel -A /dev/ad4s1a and diffed the > > > output from the two machines and they're identical. > > > > > > I've booted with kern.geom.mirror.debug=2 and the DL320G4 tastes > > > /dev/ad4s1a (along with everything else) but doesn't do anything with > > > it. > > > > > > Any ideas? > > > > > > > [for the archives] > > > > Solved. gmirror had been set up with -h specifying the device, and > > although the newer server used the same device names for its disks > > (ad[46]) it assigned them to different hot swap bays. Once I switched > > the disks everything came up fine. > > > > g. > > Wouldn't it be more feasible in this situation to just glabel the disks > and mount them from /dev/<fstype>/<label> instead. Might make your life > easier in the future for swapping disks. > > Example: > /dev/ufs/tmp on /tmp (ufs, asynchronous, local, gjournal) > /dev/ufs/usr on /usr (ufs, local, soft-updates) > /dev/ufs/var on /var (ufs, local, soft-updates)
Yep, something like that would definitely be an improvement, but the situation's a bit different. The failure was caused by trying to mount /dev/mirror/boot on /strap (Yarema's naming choice), since gmirror couldn't assemble /dev/ad[46]s1a into the mirror there *was* no /dev/mirror/boot. I think one could build a mirror using -h and glabeled devices, alternately I'm almost certain that just not using -h would have results in gmirror finding the slices regardless of the device number they got. I set this system up as an experiment to play with zfs on a root filesystem, and in it's most recent configuration used a set of scripts by Yarema, found here: http://yds.coolrat.org/zfsboot.shtml When I asked Pawel about the gmirror funny business (at meetBSD over the weekend) he asked me if the mirror had been set up with -h and I had to sheepishly confess that I didn't know, since I'd just run Yarema's stuff. None of my dual-disk boot from gmirror'ed disks systems (based on Ralf's approach, http://people.freebsd.org/~rse/mirror/) use -h and I'd completely forgotten about it. Having posted the question as a "mystery", I just thought it'd be worth posting the outcome. g. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
