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Re: (ITS#5669) slapd ...
by ali.pouya＠free.fr 27 Aug '08

27 Aug '08

Howard Chu wrote : >In fact, just drop the syncprov-reloadhint setting and you'll be fine. (Since >you never have delete operations, reloads will never occur anyway.) OK Howard. Thanks for your help. I tried to send this message several times. May be you will receive more than one answer. Best Regards Ali

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consumer crashing provider
by Dick Visser 27 Aug '08

27 Aug '08

(first post) Hi guys I am trying to set-up a pair of directory servers. Both of them run Ubuntu 8.04, which has OpenLDAP-2.4.9. I started out with one server, configured that to suit my needs (store UNIX and smb accounts), which works fine. Next thing is to set-up a second 'slave' server. After reading the docs, I decided to go for the syncrepl style replication for our micro tree. Everything seems to work fine. If I start the consumer it nicely pulls content from the provider. Retrieving the whole tree with ldapsearch from both servers yields exactly the same ldif. Great. However, if I now change something on my main server a.k.a. provider (f.i. change a password), the next time the consumers contacts the provider, the provider crashes: root@ldap:/etc/ldap# slapd -f slapd.conf -g openldap -u openldap -d 15 [snip] *** glibc detected *** slapd: free(): invalid size: 0xb676ef08 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0xb7c62a85] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7c664f0] /usr/lib/liblber-2.4.so.2(ber_memfree_x+0x4a)[0xb7f93b4a] /usr/lib/ldap/syncprov-2.4.so.2[0xb787619a] slapd(overlay_op_walk+0x34)[0x80da4e4] slapd[0x80daaf7] slapd(fe_op_search+0x313)[0x8078a73] slapd(do_search+0x777)[0x80792e7] slapd[0x807653f] slapd[0x8076c36] /usr/lib/libldap_r-2.4.so.2[0xb7fa4714] /lib/tls/i686/cmov/libpthread.so.0[0xb7d4b4fb] /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0xb7ccde5e] ======= Memory map: ======== Aborted A slave server killing a master sort of defeats the whole purpose ;-) Any ideas how to solve this? If it makes any difference, here is the provider config: include /etc/ldap/schema/core.schema include /etc/ldap/schema/cosine.schema include /etc/ldap/schema/nis.schema include /etc/ldap/schema/inetorgperson.schema include /etc/ldap/schema/samba.schema pidfile /var/run/slapd/slapd.pid argsfile /var/run/slapd/slapd.args loglevel 4096 modulepath /usr/lib/ldap moduleload back_hdb moduleload syncprov sizelimit 5000 tool-threads 1 backend hdb database hdb suffix "dc=terena,dc=org" rootdn "cn=Replication,dc=terena,dc=org" directory "/var/lib/ldap" dbconfig set_cachesize 0 16777216 0 dbconfig set_lk_max_objects 1500 dbconfig set_lk_max_locks 1500 dbconfig set_lk_max_lockers 1500 index objectClass,entryCSN,entryUUID eq index cn pres,sub,eq index sn pres,sub,eq index uid pres,sub,eq index displayName pres,sub,eq index uidNumber eq index gidNumber eq index memberUid eq index sambaSID eq index sambaPrimaryGroupSID eq index sambaDomainName eq index default sub lastmod on checkpoint 512 30 overlay syncprov syncprov-checkpoint 1 1 syncprov-sessionlog 100 access to attrs=userPassword,shadowLastChange,sambaLMPassword,sambaNTPassword by dn="cn=admin,dc=terena,dc=org" write by dn="cn=smbadmin,dc=terena,dc=org" read by dn="cn=syncrepl,dc=terena,dc=org" read by anonymous auth by self write by * none access to * by dn="cn=admin,dc=terena,dc=org" write by * read access to dn.base="" by * read And here is the consumer config: include /etc/ldap/schema/core.schema include /etc/ldap/schema/cosine.schema include /etc/ldap/schema/nis.schema include /etc/ldap/schema/inetorgperson.schema include /etc/ldap/schema/samba.schema pidfile /var/run/slapd/slapd.pid argsfile /var/run/slapd/slapd.args loglevel 256 modulepath /usr/lib/ldap moduleload back_hdb sizelimit 500 tool-threads 1 backend hdb database hdb suffix "dc=terena,dc=org" rootdn "cn=Replication,dc=terena,dc=org" directory "/var/lib/ldap" dbconfig set_cachesize 0 2097152 0 dbconfig set_lk_max_objects 1500 dbconfig set_lk_max_locks 1500 dbconfig set_lk_max_lockers 1500 index objectClass,entryCSN,entryUUID eq access to attrs=userPassword,shadowLastChange,sambaLMPassword,sambaNTPassword by dn="cn=admin,dc=terena,dc=org" write by dn="cn=smbadmin,dc=terena,dc=org" read by anonymous auth by self write by * none access to * by dn="cn=admin,dc=terena,dc=org" write by * read access to dn.base="" by * read syncrepl rid=000 provider=ldap://ldap.terena.org:389 type=refreshOnly interval=00:00:00:60 retry="60 10 300 +" searchbase="dc=terena,dc=org" scope=sub attrs=* schemachecking=off bindmethod=simple binddn="cn=syncrepl,dc=terena,dc=org" credentials=hackme updateref ldap://ldap.terena.org:389 -- Dick Visser TERENA IT Support Officer TERENA Secretariat Singel 468 D, 1017 AW Amsterdam The Netherlands T +31 20 530 44 88 F +31 20 530 44 99 visser(a)terena.org | www.terena.org

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Re: (ITS#5668) Invalid entryCSN generated, and slapd will not restart
by hyc＠symas.com 27 Aug '08

27 Aug '08

ando(a)sys-net.it wrote: > emmanuel.duru(a)atosorigin.com wrote: >> I see that tm->tm_usub is negative, there seems to be overflows between >> LARGE_INTEGER and int variables. It would take over 4 billion operations in a single timer tick (on the order of nanoseconds) to make tm_usub overflow. That seems pretty unlikely. > If the problem disappears by initializing the static variables in > lutil_gettime(), then it might be a compiler issue. I suppose that's always possible... The original post shows that the tm_usec field is negative. That could happen if the offset we computed between the SYSTEMTIME and the PerformanceCounter was wrong, or if the SYSTEMTIME was adjusted while the process was running. What version of Windows are you running? 32 or 64 bit? Can you singlestep through this function with a debugger and verify all of the values? I haven't run this code on Windows in a long time, would take a bit of effort to resurrect my build environment. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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RE: (ITS#5668) Invalid entryCSN generated, and slapd will not restart
by emmanuel.duru＠atosorigin.com 27 Aug '08

27 Aug '08

I'm sorry I thought this was an initialization issue, but this is not, Howard Chu is right. After some debugging, it is the tm_usec part which is negative (not the tm_usub, my mistake), tm_usec is computed from the large integers. > -----Message d'origine----- > De : Pierangelo Masarati [mailto:ando@sys-net.it] > Envoyé : mercredi 27 août 2008 12:23 > À : emmanuel.duru(a)atosorigin.com > Cc : openldap-its(a)openldap.org > Objet : Re: (ITS#5668) Invalid entryCSN generated, and slapd will not > restart > > emmanuel.duru(a)atosorigin.com wrote: > > I see that tm->tm_usub is negative, there seems to be overflows between > > LARGE_INTEGER and int variables. > > If the problem disappears by initializing the static variables in > lutil_gettime(), then it might be a compiler issue. > > p. > > > Ing. Pierangelo Masarati > OpenLDAP Core Team > > SysNet s.r.l. > via Dossi, 8 - 27100 Pavia - ITALIA > http://www.sys-net.it > ----------------------------------- > Office: +39 02 23998309 > Mobile: +39 333 4963172 > Fax: +39 0382 476497 > Email: ando(a)sys-net.it > -----------------------------------

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Re: (ITS#5668) Invalid entryCSN generated, and slapd will not restart
by ando＠sys-net.it 27 Aug '08

27 Aug '08

emmanuel.duru(a)atosorigin.com wrote: > I see that tm->tm_usub is negative, there seems to be overflows between > LARGE_INTEGER and int variables. If the problem disappears by initializing the static variables in lutil_gettime(), then it might be a compiler issue. p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.r.l. via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it ----------------------------------- Office: +39 02 23998309 Mobile: +39 333 4963172 Fax: +39 0382 476497 Email: ando(a)sys-net.it -----------------------------------

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RE: (ITS#5668) Invalid entryCSN generated, and slapd will not restart
by emmanuel.duru＠atosorigin.com 27 Aug '08

27 Aug '08

I see that tm->tm_usub is negative, there seems to be overflows between LARGE_INTEGER and int variables.

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Re: (ITS#5670) admin guide octetstring matching rule typos
by ghenry＠OpenLDAP.org 26 Aug '08

26 Aug '08

Fixed in HEAD. Thanks. -- Kind Regards, Gavin Henry. OpenLDAP Engineering Team. E ghenry(a)OpenLDAP.org Community developed LDAP software. http://www.openldap.org/project/

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Re: (ITS#5668) Invalid entryCSN generated, and slapd will not restart
by hyc＠symas.com 26 Aug '08

26 Aug '08

emmanuel.duru(a)atosorigin.com wrote: > Full_Name: Emmanuel Duru > Version: 2.4.11 > OS: Windows > URL: > Submission from: (NULL) (80.78.0.137) > > > On Windows, slapd generates entryCSN values such as: > 20080822124130.-657205Z#000000#000#000000 (the problem is the minus sign). > This is also the case when generating the cn=config branch from a slapd.conf > file. > Following this, slapd will not restart, because it checks the validity of > entryCSN values on cn=config branch at startup. > I believe that the problem comes from non initialized static variables in > lutil_gettime() function. > Do notice that initializations are also missing in non WIN32 section. No. The C standard specifies that global and static variables are initialized to zero by default. If you're a C programmer you should know this already. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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(ITS#5670) admin guide octetstring matching rule typos
by mbackes＠symas.com 26 Aug '08

26 Aug '08

Full_Name: Matthew Backes Version: 2.4, head OS: URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (76.88.99.93) Section 12.2.4. Attribute Type Specification contains a table of matching rules, and octetString syntax's rules have an additional "string" typo in them, contradicting both the RFC and the code as implemented. Index: admin/aspell.en.pws =================================================================== RCS file: /repo/OpenLDAP/pkg/openldap-guide/admin/aspell.en.pws,v retrieving revision 1.26 diff -u -r1.26 aspell.en.pws --- admin/aspell.en.pws 19 Aug 2008 15:27:48 -0000 1.26 +++ admin/aspell.en.pws 26 Aug 2008 20:55:30 -0000 @@ -1383,7 +1383,7 @@ mandir RXER SSFs -octetStringOrderingStringMatch +octetStringOrderingMatch auditCompare pEntry strongAuthNotSupported @@ -1657,7 +1657,7 @@ baz params generalizedTimeOrderingMatch -octetStringSubstringsStringMatch +octetStringSubstringsMatch ber slimit ali Index: admin/schema.sdf =================================================================== RCS file: /repo/OpenLDAP/pkg/openldap-guide/admin/schema.sdf,v retrieving revision 1.51 diff -u -r1.51 schema.sdf --- admin/schema.sdf 25 Jul 2008 19:10:27 -0000 1.51 +++ admin/schema.sdf 26 Aug 2008 20:55:30 -0000 @@ -260,8 +260,8 @@ numericStringOrderingMatch ordering numerical numericStringSubstringsMatch substrings numerical octetStringMatch equality octet string -octetStringOrderingStringMatch ordering octet string -octetStringSubstringsStringMatch ordering octet string +octetStringOrderingMatch ordering octet string +octetStringSubstringsMatch ordering octet string objectIdentiferMatch equality object identifier !endblock

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Re: (ITS#5669) slapd replica ignores some new objects
by hyc＠symas.com 26 Aug '08

26 Aug '08

Howard Chu wrote: > ali.pouya(a)free.fr wrote: >> I precise that I have set the following directives (I have no delete operation >> in my directory and I wish to avoid the present phase to be engaged) : >> >> syncprov-nopresent TRUE >> syncprov-reloadhint TRUE >> >> If I comment out at least one of these directives then the problem disapears >> (the object o1 is present in the replica). > > You're tripping over a behavior change that was made to fix ITS#5493. For now, > you should only use both of those settings together if the underlying database > is an accesslog DB (which always returns entries in modification order). We > should probably use some other method of detecting the accesslog... In fact, just drop the syncprov-reloadhint setting and you'll be fine. (Since you never have delete operations, reloads will never occur anyway.) -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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