On 01/10/2007, at 7:46 PM, James C. McPherson wrote: > Kugutsumen wrote: >> I would like confirm that Solaris Express Developer Edition 09/07 >> b70, you can't have /usr on a separate zfs filesystem because of >> broken dependencies. >> 1/ Part of the problem is that /sbin/zpool is linked to /usr/lib/ >> libdiskmgt.so.1 >> 2/ There are probably other broken dependencies since I've >> already tried to create /usr/lib and copied the libdiskmgt to it >> and booting still failed. > > > I hestitate to call these "broken dependencies" - deliberate > design decision is how I'd refer to them.
zpool and zonename are the only binaries in /sbin which links to /usr/ lib, all the others work are linked exclusively to libraries in /lib. There is a reason we have separate /sbin and /usr/sbin directories ;). Historically, we always kept tools like fdisk, mount, ifconfig, route, sash, etc... so that in case of a failure you can recover the root partition easily and faster. Luckily with zfs, we don't have to wait hours for and fsck run. > >> 3/ It is really hard to diagnose the problem because solaris will >> just panic, leaving you with a fraction of a second to read the >> message before it reboots. >> 4/ Is there a way to add a time out to panic reboots? I guess >> I'll have to use a video camera to capture the error message. > > Add "-kv" to the kernel$ line in your grub menu entry. That will > leave the system at kmdb on panic, and you can then run > > > ::status > ::msgbuf > *panic_thread::findstack -v > > > The output will be handy when trying to figure out the root cause. Thanks for the tip, I am going to try that in a minute and post the results. Someone else also suggest to use a serial cable. >> It would be really nice if we could fix this bug then we could >> have only a minimal root partition on two 1GB flash disk pool (/ >> takes about 500 megs) in mirror mode and have the rest of the >> system on separate raidz2 pool. > > There is an active effort to minimise the requirements for Solaris > in a similar model to what you suggest. However, I think it makes > the assumption that /usr is on /. It works fine with UFS filesystem and it should work on ZFS... especially Sun's documentation and several sun.com blogs suggests to separate / and /usr. http://docs.sun.com/app/docs/doc/816-5175/6mbba7f16?l=en&a=view http://docs.sun.com/app/docs/doc/819-6396/6n8dosoq5?a=view _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
