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Re: Correct way to load LDIF in mirrormode
Brett @Google wrote:
> On Sat, Nov 21, 2009 at 7:10 PM, Howard Chu <firstname.lastname@example.org
> <mailto:email@example.com>> wrote:
> > If this is true, then would i also be correct is saying that -S <sid>
> > only sets a parameter to enable the -w option to set the SID correctly
> > in CSN's etc? and that the value provided by -S has no effect if -w is
> > not provided ?
> hmmm.. csnsid in slapadd.c defaults to 0, unless the -S option is given,
> but let us assume it is given -S 1, so csnsid=1
> if the -w option is specified, then update_ctxcsn is >0
> it looks like slapadd will create the berval csn (in memory) which takes
> the value of csnsid,
> but it will only write related data if (update_ctxcsn)
The manpage clearly states that -S sets the SID used in generated entryCSNs.
It also clearly states that the -w option writes the contextCSN based on the
greatest entryCSN in the database.
Period, end of story.
> but for multimaster the csnsid is used (thus must be provided) to find
> it's own CSN, but unless update_ctxcsn is >0, it wont change any state?
> so maybe -S <sid> is required (with or without -w) to initialize
> multimaster to find the correct CSN (as other master's CSN's could be
> present? - i dont quite get why though if we are re-loading the
> database), but for mirrormode -S <sid> is not required (if there is no
> -w), but only because any other <sid>'s are likely to be shadow contexts
> in the initial case of a data load ?
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/