I am migrating an openLDAP tree into ipa, and when I run ipa migrate-ds, the 
migration aborts after roughly 36 seconds with:
ipa: ERROR: cannot connect to 'ldap://10.x.x.x:389':

It has transferred 9762 records, but seems to hit a timeout that causes it to 

I've run it in debug mode, which only provides this:
ipa: DEBUG: Starting external process
ipa: DEBUG: args=keyctl pupdate 774698354
ipa: DEBUG: Process finished, return code=0
ipa: DEBUG: stdout=
ipa: DEBUG: stderr=
ipa: DEBUG: Caught fault 907 from server 
https://foo.example.com/ipa/session/xml: cannot connect to 
ipa: DEBUG: Destroyed connection context.xmlclient
ipa: ERROR: cannot connect to 'ldap://10.x.x.x:389':

Initially, it had transferred 2000 records and stopped, until I set 
nsslapd-sizelimit in cn=config:

nsslapd-sizelimit: 20000

I then re-ran the migration a dozen times, each time it would transfer more 
records, but would always time out at around the 36 second mark.  Now that I'm 
at 9762 records, it seems to have reached a peak.

I suspect this is another tunable, but haven't been able to find it, any 
document that mentions it, or anyone else hitting this issue.

RHEL 7.0 server
idM ipa-server-3.3.3-28

source is RHEL 6.5 running openldap-2.4.23-34

command used to migrate:
ipa migrate-ds --continue --bind-dn="uid=me,ou=people,ou=foo,dc=example,dc=com" 
--base-dn="ou=foo,dc=example,dc=com" ldap://10.x.x.x:389




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