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(ITS#8102) syncrepl_entry: be_modify failed (16)
by tpretz＠gmail.com 10 Apr '15

10 Apr '15

Full_Name: Tom Pressnell Version: 2.4.40 OS: debian wheezy URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (5.63.147.4) Hi, In testing i have encountered the following when restoring replication from multiple providers. slapd: slapd starting slapd: null_callback : error code 0x10 slapd: syncrepl_entry: rid=106 be_modify failed (16)AsAslapd: do_syncrepl: rid=106 rc 16 retrying (9 retries left) Running 2.4.40 on debian wheezy amd64. This occurs with both the mdb and hdb backends. While the consumer was offline i removed all values of an indexed attribute from hundreds of entries, all providers are synced. Using standard syncrepl (not delta), issue occurs at process startup where the consumer has been offline for a short while, i.e. replaying the sessionlog not falling back to present. Having a read of syncrepl.c it would seem that syncrepl_diff_entry is called for a entry received from a provider in a race with the same entry from another provider in a different thread. Both diff calls result in an attribute delete operation, when be_modify is hit for the second time it fails with no such attribute as the first thread has already removed it (uses DELETE, not SOFTDEL). Thanks Tom

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Re: (ITS#7145) cn=Connection 0
by michael＠stroeder.com 10 Apr '15

10 Apr '15

hguo(a)suse.com wrote: > Is your build identical to the 2.4.40 on OBS in terms of patches/source > code revision? No. It's RE24 with all changes to be released as 2.4.41. > What distribution did you use for testing? openSUSE Tumbleweed x86_64. Ciao, Michael.

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Re: (ITS#7145) cn=Connection 0
by hguo＠suse.com 10 Apr '15

10 Apr '15

Is your build identical to the 2.4.40 on OBS in terms of patches/source code revision? What distribution did you use for testing? Kind regards, Howard On 10/04/15 15:23, Michael Ströder wrote: > Michael Ströder wrote: >> Yes, the duplicate occurence should be fixed. I have to check in my >> installation if it's still an issue. > > Using a local build from RE24 branch I cannot see the duplicate > occurence of > cn=Connection 0,cn=Connections,cn=Monitor anymore. > > Ciao, Michael. > >

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Re: (ITS#7145) cn=Connection 0
by michael＠stroeder.com 10 Apr '15

10 Apr '15

Michael Ströder wrote: > Yes, the duplicate occurence should be fixed. I have to check in my > installation if it's still an issue. Using a local build from RE24 branch I cannot see the duplicate occurence of cn=Connection 0,cn=Connections,cn=Monitor anymore. Ciao, Michael.

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Re: (ITS#7145) cn=Connection 0
by hguo＠suse.com 10 Apr '15

10 Apr '15

Last month when I tried OpenLDAP 2.4.40 using your SLES 12 package, I was still able to get two Connection0s to show up in one response. It'll be a great news if that's no longer the case with the next release. Kind regards, Howard On 10/04/15 15:08, Michael Ströder wrote: > hguo(a)suse.com wrote: >> According to the issue report, the connection 0's DN appears not only >> once, but twice, in some circumstances. Duplicated DN should not have >> appeared in server response. >> >> Apart from that, connection 0 does not serve any purpose for LDAP >> clients, therefore its connection details are not useful. > > Yes, the duplicate occurence should be fixed. I have to check in my > installation if it's still an issue. > > But IMO it's not the correct solution to completely mask out > Connection 0. > > Ciao, Michael. > >

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Re: (ITS#7145) cn=Connection 0
by michael＠stroeder.com 10 Apr '15

10 Apr '15

This is a cryptographically signed message in MIME format. --------------ms040201060806000805040605 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable hguo(a)suse.com wrote: > According to the issue report, the connection 0's DN appears not only > once, but twice, in some circumstances. Duplicated DN should not have > appeared in server response. > > Apart from that, connection 0 does not serve any purpose for LDAP > clients, therefore its connection details are not useful. Yes, the duplicate occurence should be fixed. I have to check in my=20 installation if it's still an issue. But IMO it's not the correct solution to completely mask out Connection 0= =2E Ciao, Michael. --------------ms040201060806000805040605 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC DIEwggY0MIIEHKADAgECAgEeMA0GCSqGSIb3DQEBBQUAMH0xCzAJBgNVBAYTAklMMRYwFAYD VQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0 ZSBTaWduaW5nMSkwJwYDVQQDEyBTdGFydENvbSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAe Fw0wNzEwMjQyMTAxNTVaFw0xNzEwMjQyMTAxNTVaMIGMMQswCQYDVQQGEwJJTDEWMBQGA1UE ChMNU3RhcnRDb20gTHRkLjErMCkGA1UECxMiU2VjdXJlIERpZ2l0YWwgQ2VydGlmaWNhdGUg U2lnbmluZzE4MDYGA1UEAxMvU3RhcnRDb20gQ2xhc3MgMSBQcmltYXJ5IEludGVybWVkaWF0 ZSBDbGllbnQgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDHCYPMzi3YGrEp pC4Tq5a+ijKDjKaIQZZVR63UbxIP6uq/I0fhCu+cQhoUfE6ERKKnu8zPf1Jwuk0tsvVCk6U9 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Re: (ITS#7145) cn=Connection 0
by hguo＠suse.com 10 Apr '15

10 Apr '15

According to the issue report, the connection 0's DN appears not only once, but twice, in some circumstances. Duplicated DN should not have appeared in server response. Apart from that, connection 0 does not serve any purpose for LDAP clients, therefore its connection details are not useful. What do you think? Kind regards, Howard On 10/04/15 14:29, Michael Ströder wrote: > hguo(a)suse.com wrote: >> The patch is a proposed resolution to the issue. >> >> To prevent monitor backend from returning invalid result about >> Connection 0, it will simply not report information about the >> connection 0. > > Indeed I do understand what your patch does. > > But what is the real problem with Connection 0 you're trying to solve? > Note that slapd internally access the database(s). So your monitoring > checks should simply ignore this Connection 0. > > Ciao, Michael. > .

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Re: (ITS#7145) cn=Connection 0
by michael＠stroeder.com 10 Apr '15

10 Apr '15

hguo(a)suse.com wrote: > The patch is a proposed resolution to the issue. > > To prevent monitor backend from returning invalid result about > Connection 0, it will simply not report information about the connection 0. Indeed I do understand what your patch does. But what is the real problem with Connection 0 you're trying to solve? Note that slapd internally access the database(s). So your monitoring checks should simply ignore this Connection 0. Ciao, Michael.

1 0

Re: (ITS#7145) cn=Connection 0
by hguo＠suse.com 10 Apr '15

10 Apr '15

The patch is a proposed resolution to the issue. To prevent monitor backend from returning invalid result about Connection 0, it will simply not report information about the connection 0. Kind regards, Howard On 10/04/15 11:41, Michael Ströder wrote: > hguo(a)suse.com wrote: >> I created a patch against the latest source code and uploaded the patch >> "howard-guo-2015-04-10.patch" onto the FTP server. With the patch, >> monitor backend no longer returns connection ID 0 to the LDAP client. > > I'm curious: Which problem do you want to solve? > > Ciao, Michael. >

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Re: (ITS#7145) cn=Connection 0
by michael＠stroeder.com 10 Apr '15

10 Apr '15

hguo(a)suse.com wrote: > I created a patch against the latest source code and uploaded the patch > "howard-guo-2015-04-10.patch" onto the FTP server. With the patch, > monitor backend no longer returns connection ID 0 to the LDAP client. I'm curious: Which problem do you want to solve? Ciao, Michael.

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