solaris10 zone to solaris10 brand in s11 recovery

there is interesting thread on zones-discuss  the situation

• start with s10u8 zone
• zoneadm attach -u to s10u9 hosts
• v2v to s11 express as solaris10 brand zone
• update  the host to solaris 11 from solaris 11 express
• run /usr/lib/brand/shared/dsconvert
• # zoneadm -z sandpit boot (failed)
  zone 'sandpit': WARNING: vnic3:1: no matching subnet found in netmasks(4): 172.25.48.101; using default of 255.255.0.0.
  zone 'sandpit': Error: The installed version of Solaris 10 is not supported.
  zone 'sandpit': SPARC systems require patch 142909-17
  zone 'sandpit': x86/x64 systems require patch 142910-17
  zone 'sandpit': exec /usr/lib/brand/solaris10/s10_boot sandpit /zoneRoot/sandpit failed
  zone 'sandpit': ERROR: unable to unmount /zoneRoot/sandpit/root.
• to recover

1. Reboot to the Solaris 11 Express BE

   root@global# beadm activate <s11express-be-name>
   root@global# init 6

2. Partially revert the work done by dsconvert

   In this example, the zone's zonepath is /zones/s10.

   root@global# zfs list -r /zones/s10
   rpool/zones/s10                    3.18G  11.3G    51K  /zones/s10
   rpool/zones/s10/rpool              3.18G  11.3G    31K  /rpool
   rpool/zones/s10/rpool/ROOT         3.18G  11.3G    31K  legacy
   rpool/zones/s10/rpool/ROOT/zbe-0   3.18G  11.3G  3.18G  /
   rpool/zones/s10/rpool/export         62K  11.3G    31K  /export
   rpool/zones/s10/rpool/export/home    31K  11.3G    31K  /export/home

   The goal here is to move rpool/zones/s10/rpool/ROOT up one level.  We
   need to do a bit of a dance to get it there.  Do not reboot or issue
   'zfs mount -a' in the middle of this.  If something goes wrong and a
   reboot happens, it won't be disasterous - you will just need to
   complete the procedure when the next boot stops with
   svc:/filesystem/local problems.

   root@global# zfs set mountpoint=legacy rpool/zones/s10/rpool/ROOT/zbe-0
   root@global# zfs set zoned=off rpool/zones/s10/rpool
   root@global# zfs rename rpool/zones/s10/rpool/ROOT/zbe-0 \
      rpool/zones/s10/ROOT
   root@global# zfs set zoned=on rpool/zones/s10/rpool
   root@global# zfs set zoned=on rpool/zones/s10/ROOT

   Now the zone's dataset layout should look like:

   root@global# zfs list -r /zones/s10
   NAME                                USED  AVAIL  REFER  MOUNTPOINT
   rpool/zones/s10                    3.19G  11.3G    51K  /zones/s10
   rpool/zones/s10/ROOT               3.19G  11.3G    31K  legacy
   rpool/zones/s10/ROOT/zbe-0         3.19G  11.3G  3.19G  legacy
   rpool/zones/s10/rpool                93K  11.3G    31K  /rpool
   rpool/zones/s10/rpool/export         62K  11.3G    31K  /export
   rpool/zones/s10/rpool/export/home    31K  11.3G    31K  /export/home

3. Boot the zone and patch

   root@global# zoneadm -z s10 boot
   root@global# zlogin s10
   root@s10# ...  (apply required patches)

119254/119255 rev 75 (patch utils)
u9 kernale patch 14299/142910-17(SPARC/x86) 






4. Shutdown the zone

   root@s10# init 0

5. Revert the dataset layout to the way that dsconvert left it.

   Again, try to avoid reboots during this step.

   root@global# zfs set zoned=off rpool/zones/s10/ROOT
   root@global# zfs set zoned=off rpool/zones/s10/rpool
   root@global# zfs rename rpool/zones/s10/ROOT rpool/zones/s10/rpool/ROOT
   root@global# zfs set zoned=on rpool/zones/s10/rpool
   root@global# zfs inherit zoned rpool/zones/s10/rpool/ROOT

6. Reboot to Solaris 11

   root@global# beadm activate <solaris11-be-name>
   root@global# init 6

At this point, the zone should be bootable on Solaris 11.

Observations

since this is zoneadm attach -u from u8 to u9, only min update so it is not really a u9 zone
one should really do zoneadm attach -U from u8 to u9
RTFM,  to support SVR4 pkg and patching one need to install 119254-75 (SPARC), 119534-24, and 140914-02 or 119255-75, 119535-24 and 140915-02 (x86/x64), or later versions in solaris 10 before created archive