[SCM] CTDB repository - branch drop-laccessor created - ctdb-1.9.1-249-g125ab46

[Ronnie Sahlberg]

The branch, drop-laccessor has been created
        at  125ab469da32cc4db6012d4d1779228351e675bf (commit)

- Log -----------------------------------------------------------------
commit 125ab469da32cc4db6012d4d1779228351e675bf
Author: Ronnie Sahlberg <ronniesahlberg at gmail.com>
Date:   Mon Nov 29 13:07:59 2010 +1100

    Remove LACOUNT and LACCESSOR and migrate the records immediately.
    
    This concept didnt work out and it is really just as expensive as a full migration
    anyway, without the benefit of caching the data for subsequence accesses.
    
    Now, migrate the records immediately on first access.
    This will be combined with a "cheap vacuum-lite" for special empty records to
    prevent growth of databases.
    
    Later extensions to mimic read-only behaviour of records will include proper shared read-only locking of database records, making the laccessor/lacount read-only access to the data obsolete anyway.
    
    By removing this special case and handling of lacount laccessor makes the codapath where shared read-only locking will be be implemented simpler, and frees up space in the ctdb_ltdb header for use by vacuuming flags as well as read-only locking flags.

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