[Bug 226714] zfsboot(8) erroneously suggests creating a BSD label

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Mon Mar 19 06:13:26 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226714

            Bug ID: 226714
           Summary: zfsboot(8) erroneously suggests creating a BSD label
           Product: Documentation
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Documentation
          Assignee: freebsd-doc at FreeBSD.org
          Reporter: vas at mpeks.tomsk.su

man zfsboot in the example of "zfsboot can also be installed in an MBR slice"
suggests that a BSD label must be created  within the slice:

gpart create -s BSD ada0s1

In fact, a BSD label in the slice prevents zfsboot from detecting the bootable
zfs pool in the slice. 

More details and a working example of creating a bootable zfs pool within an
MBR slice can be found here:
https://docs.freebsd.org/cgi/getmsg.cgi?fetch=22620+0+current/freebsd-questions

The Wiki Page https://wiki.freebsd.org/RootOnZFS/ZFSBootSlice says "does not
boot" but in fact a correct configuration is quite possible.

Another Wiki PAGE https://wiki.freebsd.org/RootOnZFS/ZFSBootPartition contains
the same error: the BSD label which is erroneous.

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