zfs crypto discuss - Jan 2008 - CR 6647661 <User 1-5Q-12446>, Now responsible engineer P2 kernel/zfs "set once" / "create time only" properties can''t be set for pool level dataset

*Synopsis*: "set once" / "create time only" properties
can''t be set for pool level dataset

Due to a change requested by <User 1-5Q-12446>,
<User 1-5Q-12446> is now the responsible engineer for:

CR 6647661 changed on Jan 7 2008 by <User 1-5Q-12446>

=== Field ============ === New Value ============= === Old Value ============
Responsible Engineer   <User 1-5Q-12446>
Status                 3-Accepted                  1-Dispatched               
====================== =========================== ==========================

*Change Request ID*: 6647661

*Synopsis*: "set once" / "create time only" properties
can''t be set for pool level dataset

  Product: solaris
  Category: kernel
  Subcategory: zfs
  Type: Defect
  Subtype: Usability
  Status: 3-Accepted
  Substatus: 
  Priority: 2-High
  Introduced In Release: 
  Introduced In Build: 
  Responsible Engineer: <User 1-5Q-12446>
  Keywords: zfs-crypto

=== *Description* ===========================================================The
toplevel initial dataset in a pool can''t currently have any of the
create time only properties set:

The examples below use the normalization property but this applies to all
properties that
are create time only.

Attempt to set a create time only dataset property at pool creation time:

# zpool create -o normalization=formC mypool /tmp/f
property ''normalization'' is not a valid pool property

This isn''t unexpected though because we can''t set dataset
properties with zpool(1M), however:

Create the pool and then attempt to set the property on the top level dataset:

# zpool create mypool /tmp/f
# zfs set normalization=formC mypool  
cannot set property for ''mypool'':
''normalization'' is readonly

So now we are stuck with a dataset who''s create time only property we
can''t change.

Compare this to creating a non top level dataset, where the create time only
property can be set:

# zfs create -o normalization=formC mypool/data

*** (#1 of 1): 2008-01-07 11:18:02 GMT+00:00 <User 1-5Q-14842>


=== *Workaround*
============================================================Change the top level
dataset to ''canmount=false'' so that no data is stored in it.

*** (#1 of 1): 2008-01-07 11:18:02 GMT+00:00 <User 1-5Q-14842>


=== *Additional Details* ====================================================   
Targeted Release:
        Commit To Fix In Build: 
        Fixed In Build: 
        Integrated In Build: 
        Verified In Build: 
  See Also: 
  Duplicate of: 
  Hooks:
        Hook1: 
        Hook2: 
        Hook3: 
        Hook4: 
        Hook5: 
        Hook6: 
  Program Management: 
  Root Cause: 
  Fix Affects Documentation: No
  Fix Affects Localization: No

=== *History* ===============================================================   
Date Submitted: 2008-01-07 11:18:02 GMT+00:00
        Submitted By: <User 1-5Q-14842>

        Status Changed    Date Updated                  Updated By
        3-Accepted        2008-01-07 16:07:13 GMT+00:00 <User 1-5Q-12446>


=== *Service Request* =======================================================   
Impact: Significant
        Functionality: Primary
        Severity: 2
        Product Name: solaris
        Product Release: solaris_nevada
        Product Build: 
        Operating System: solaris
        Hardware: generic
        Submitted Date: 2008-01-07 11:18:03 GMT+00:00


=== *Multiple Release (MR) Cluster* - 0 ======================================