>
> Recently some changes were made to how a root pool is opened for root
> filesystem
> mounting. Previously the root pool had to be present in zpool.cache. Now it
> is
> automatically discovered by probing available GEOM providers.
> The new scheme is believed to be more flexible. For example, it allows to
> prepare
> a new root pool at one system, then export it and then boot from it on a new
> system without doing any extra/magical steps with zpool.cache. It could also
> be
> convenient after zpool split and in some other situations.
>
> The change was introduced via multiple commits, the latest relevant revision
> in
> head is r243502. The changes are partially MFC-ed, the remaining parts are
> scheduled to be MFC-ed soon.
>
> I have received a report that the change caused a problem with booting on at
> least
> one system. The problem has been identified as an issue in local environment
> and
> has been fixed. Please read on to see if you might be affected when you
> upgrade,
> so that you can avoid any unnecessary surprises.
>
> You might be affected if you ever had a pool named the same as your current
> root
> pool. And you still have any disks connected to your system that belonged to
> that
> pool (in whole or via some partitions). And that pool was never properly
> destroyed using zpool destroy, but merely abandoned (its disks
> re-purposed/re-partitioned/reused).
>
> If all of the above are true, then I recommend that you run 'zdb -l <disk>'
> for
> all suspect disks and their partitions (or just all disks and partitions). If
> this command reports at least one valid ZFS label for a disk or a partition
> that
> do not belong to any current pool, then the problem may affect you.
>
> The best course is to remove the offending labels.
>
> If you are affected, please follow up to this email.
GREATE!!!!
in a diskless environment, /boot is read only, and the zpool.cache issue
has been bothering me ever since, there was no way (and I tried) to re route it.
thanks,
danny
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